TWI526749B - Thin direct-light-type backlight module and its manufacture method - Google Patents
Thin direct-light-type backlight module and its manufacture method Download PDFInfo
- Publication number
- TWI526749B TWI526749B TW103144360A TW103144360A TWI526749B TW I526749 B TWI526749 B TW I526749B TW 103144360 A TW103144360 A TW 103144360A TW 103144360 A TW103144360 A TW 103144360A TW I526749 B TWI526749 B TW I526749B
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- light source
- groove
- backlight module
- type backlight
- Prior art date
Links
Landscapes
- Planar Illumination Modules (AREA)
Description
本發明有關於一種背光模組，且特別關於一種直下式背光模組。 The invention relates to a backlight module, and in particular to a direct type backlight module.
背光模組(Back light module)為液晶顯示器面板(LCD panel)的關鍵零組件之一，由於液晶本身不發光，背光模組之功能即在於供應充足的亮度與分佈均勻的光源，使其能正常顯示影像。一般而言，背光模組可分為兩種結構： The backlight module is one of the key components of the LCD panel. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply sufficient light and uniform light source to make it normal. Display images. In general, the backlight module can be divided into two structures:
(1)側光式(Edge lighting)結構：發光源為擺在側邊之光源，導光板有採射出成型無印刷式設計者，一般常用於18吋以下中小尺寸的背光模組，其側邊入射的光源設計，擁有輕量、薄型、窄框化、低耗電的特色，亦為手機、個人數位助理(PDA)、筆記型電腦的光源；目前亦有大尺寸背光模組採用側光式結構，以押出成型配合無印刷式設計或網點油墨印刷設計，應用於單價較高之電視螢幕。 (1) Edge lighting structure: the light source is a light source placed on the side, and the light guide plate has a print-out and no-print design, and is generally used for a small and medium-sized backlight module of 18 inches or less. The incident light source design has the characteristics of light weight, thin shape, narrow frame, low power consumption, and is also a light source for mobile phones, personal digital assistants (PDAs), and notebook computers. Currently, large-sized backlight modules are also used in side-light type. The structure is designed for extrusion molding with no printing design or dot ink printing design, and is applied to a TV screen with a higher unit price.
(2)直下型(Bottom lighting)結構：超大尺寸的背光 模組，側光式結構較無法在重量、消費電力、亮度及價格上佔有優勢，因此不含導光板且光源放置於正下方的直下型結構便被發展出來。光源由自發性光源(例如燈管、發光二極體等)射出藉由反射板反射後，向上經擴散板均勻分散後於正面射出，因安置空間變大，燈管可依TFT面板大小使用2至多之燈管，但同時也增加了模組的厚度，其優點為高輝度、良好的出光視角、光利用效率高、結構簡易化等，因而適用於對可攜性及空間要求較不挑剔的LCD monitor與LCD TV，其高消費電力(使用冷陰極管)，均一性不佳及造成LCD發熱等問題仍需要改善。 (2) Bottom lighting structure: oversized backlight Modules, side-light structures are less able to have an advantage in terms of weight, power consumption, brightness and price. Therefore, a direct-type structure without a light guide plate and a light source placed directly below is developed. The light source is emitted by a spontaneous light source (for example, a lamp tube, a light-emitting diode, etc.), and is reflected by the reflector, and then uniformly dispersed by the diffusion plate and then emitted on the front side. Since the installation space becomes large, the lamp can be used according to the size of the TFT panel. At most, the thickness of the module is increased, and the advantages are high brightness, good light viewing angle, high light utilization efficiency, simple structure, etc., so it is suitable for portability and space requirements. LCD monitors and LCD TVs, their high power consumption (using cold cathode tubes), poor uniformity and LCD heating problems still need to be improved.
因此，業內便有國際知名大廠，試圖將上述兩種結構予以整合，各取其優點而排除其缺陷，主要是取側光式薄型化的優勢與直下式用料節省的優勢，而有例如下列各國專利：US 7101069、US 2004/0012971、US 2003/0086255、US 2002/0113924、US 2002/0044437、US 6747404、US 6734926、US 6700554、US 6561663、US RE36961、US 5567042、US 5138528、US 4826294、US 7207709、US 4641226、US 5993027、US 6144360、US 6417832、US 6789923、US 6871979、US 6883950、US 7251412、US 2004/0130879、US 2004/0021918、US 6785433、US 6426812、US 6384883、US 6333773、US 6075579、US 5943166、US 5841596、US 5799124、US 5748828、US 5602950、US 2007/051960、US 2007/086179、US 2004/0062034、CN 102644883、CN 201983118、TW I322304、TW I342628、TW I363219、TW M345352、TW M377609、TW M447505、TW 201213969、US 7780306、JP 8136917、JP 2001006416、JP 2001351424、JP 2003008068、JP 2004133391、US 6036328、US 6607286、US 7341358、US 7413318、US2002/0163808、US 2005/0185391、US 2006/0114690、US 7828456、US 7946746、US 8002428、US 8021033、US 8042968、US 8070345、US 8177386、US 8393776、US 2011/0205750、US2011/0317417、US 8382337、US 6679621、US 7414270、US 2006/0138437、US 2006/0208269、US 2006/0291205、US 2008/0030986、US 2008/0151551、US 2008/0303757、US 2009/0225550、CN 101046576、CN 101206280、US 7246931、TW I317829、US 6536923、US 6547423、US 6612720、US 6974241、US 6981784、US 7135034、US 7159997、US 2004/0218388、US 2005/0002205、US 2005/0270774、US 2005/0286251、US 2006/0087866、US 7341358、US 8007156、US 8033690、US 8215814、US 8240865、US 2011/0032450、US 2012/0069575、TW 201215936、US 5921651、US 7334933、US 6193383、US 6530671、US 6951415、US 2004/0114343、US 8393748、US 2010/0103650、US 2011/0317417、WO 2012042436、WO 2012073156、US 7585083、US 5841596、US 6199989、US 6647199、US 6679621、US 6974229、US 7006306、US 7063450、US 7142769、US 7168841、US 7220041、US 7287891、US 7320531、US 7322721、US 7334933、US 2002/0057561、US 2004/0042194、US 2005/0007793、US 2007/0030414、US 2007/0171678、US 2009/0034264、CN 02131652.X、US 7731400、US 8070336、US 8104910、US 8157410、US 8297786、US 8308326、US 8382337、US 2010/0220484、TW I364565以及TW I276890。 Therefore, there are internationally renowned large manufacturers in the industry, trying to integrate the above two structures, taking their advantages and eliminating their defects, mainly taking the advantage of side-light thinning and the advantages of direct-type materials saving, for example The following national patents: US 7101069, US 2004/0012971, US 2003/0086255, US 2002/0113924, US 2002/0044437, US 6747404, US 6734926, US 6700554, US 6561663, US RE36961, US 5567042, US 5138528, US 4826294 US 7,207,709, US 4,641,226, US 5,993,027, US 6,144,360, US Pat. No. 6,417,832, US 6,789, 923, US 687 1979, US Pat. No. 6,839,950, US Pat. No. 7, 519, 512, US, US Pat. No. 6, s, s, US Pat. US 6075579, US 5943166, US 5841596, US 5799124, US 5748828, US 5602950, US 2007/051960, US 2007/086179, US 2004/0062034, CN 102644883, CN 201983118, TW I322304, TW I342628, TW I363219, TW M345352, TW M377609, TW M447505, TW 201213969, US 7780306, JP 8136917, JP 2001006416, JP 2001351424, JP 2003008068, JP 2004133391, US 6036328, US 6607286, US 7341358, US 7413318, US2002/0163808, US 2005/0185391, US 2006/0114690, US 7828456, US 7946746, US 8002428, US 8021033, US 8042968, US 8070345, US 8177386, US 8393776, US 2011/0205750, US 2011/0317417, US 8382337, US 6679621, US 7414270, US 2006/0138437, US 2006/0208269, US 2006/0291205, US 2008/0030986, US 2008/0151551, US 2008/0303757, US 2009/0225550, CN 101046576, CN 101206280, US 7246931, TW I317829, US 6536923, US 6547423, US 6612720, US 6974241, US 6981784, US 7135034, US 7159997, US 2004/0218388, US 2005/0002205, US 2005/0270774, US 2005/0286251, US 2006/0087866, US 7341358, US 8007156, US 8033690, US 8215814, US 8240865, US 2011/0032450, US 2012/0069575, TW 201215936, US 5921651, US 7334933, US 6193383, US 6530671, US 695 1415, US 2004/0114343, US 8393748, US 2010/0103650, US 2011/0317417, WO 2012042436, WO 2012073156, US 7585083, US 5841596, US 6199989, US 6647199, US 6679621, US 6974229, US 7006306, US 7063450, US 7142769, US 7168841, US 7220041, US 7287891, US 7320531, US 7322721, US 7334933, US 2002/0057561, US 2004/0042194, US 2005/0007793, US 2007/0030414, US 2007/0171678, US 2009/0034264, CN 02131652.X, US 7731400, US 8070336, US 8104910, US 8157410, US 8297786, US 8308326, US 8382337, US 2010/0220484, TW I364565, and TW I276890.
但縱令有如許多專利在案，其目前仍無法量產，顯見此必有長期存在之技術窠臼阻礙。由此可見，上述背光模組仍存在不便與缺陷，而有待加以進一步改良。因此，如何能有效地解決上述不便與缺陷，實屬當前重要研發課題之一，亦成為當前相關領域亟需改進的目標。 However, as many patents are on the way, it is still not mass-produced at present, and it is obvious that there must be long-standing technical obstacles. It can be seen that the above backlight module still has inconvenience and defects, and needs to be further improved. Therefore, how to effectively solve the above inconveniences and defects is one of the current important research and development topics, and it has become an urgent need for improvement in related fields.
有鑑於此，本發明之一目的係在於提供一種薄型直下式背光模組與其製作方法，用以解決以上先前技術所提到的困難。 In view of the above, an object of the present invention is to provide a thin direct type backlight module and a manufacturing method thereof, which solve the difficulties mentioned in the prior art.
為了達到上述目的，依據本發明之一實施方式，此種薄型直下式背光模組，包含一導光板、多個光源模組與多個可撓式導接件。導光板，包含一透光板體多個凸出部與多個錐形凹部。透光板體包含相對配置之一頂面與一底面。這些凸出部位於透光板體之底面，每個凸出部具有一末端端面，末端端面具有一入光面。這些錐形凹部位於透光板體之頂面，分別對齊這些末端端面。這些光源模組分別彼此實體分隔，每個光源模組包含一配線板及一發光二極體元件。配線板位於其中一末端端面上。發光二極體元 件設於配線板之一面上，且抵接其中一入光面。每個可撓式導接件電性導接任二相鄰之配線板。 In order to achieve the above object, in accordance with an embodiment of the present invention, the thin direct type backlight module includes a light guide plate, a plurality of light source modules, and a plurality of flexible guide members. The light guide plate comprises a plurality of convex portions and a plurality of conical concave portions of the light transmissive plate body. The light transmissive plate body comprises a top surface and a bottom surface of the opposite arrangement. The protruding portions are located on the bottom surface of the light transmissive plate body, and each of the protruding portions has an end end surface, and the end end surface has a light incident surface. These tapered recesses are located on the top surface of the light transmissive plate body and are aligned with the end faces, respectively. The light source modules are physically separated from each other, and each of the light source modules includes a wiring board and a light emitting diode element. The wiring board is located on one of the end faces. Luminous diode The device is disposed on one side of the wiring board and abuts one of the light incident surfaces. Each flexible guide member is electrically connected to any two adjacent wiring boards.
在本發明一或多個實施方式中，每個錐形凹部包含一尖端底部及一凸曲面內壁。凸曲面內壁連接於尖端底部與透光板體之頂面之間，且圍繞尖端底部。每個錐形凹部之尖端底部對其所對齊之配線板之一正投影經過其中一發光二極體元件。 In one or more embodiments of the present invention, each of the tapered recesses includes a tip end and a convex curved inner wall. The inner surface of the convex curved surface is connected between the bottom of the tip and the top surface of the light transmissive plate body, and surrounds the bottom of the tip end. The tip end of each tapered recess is orthographically projected through one of the wiring elements aligned with one of the wiring boards.
在本發明一或多個實施方式中，每個末端端面更具有一凹槽。入光面位於凹槽內，每個光源模組之發光二極體元件伸入凹槽內。 In one or more embodiments of the invention, each end face has a groove. The light incident surface is located in the recess, and the light emitting diode component of each light source module protrudes into the recess.
在本發明一或多個實施方式中，薄型直下式背光模組更包含一反光片材。反光片材疊設於透光板體之底面，反光片材包含多個貫穿口，這些凸出部分別一對一地穿過這些貫穿口。每個光源模組更包含一光反射層。光反射層位於光源模組之配線板之那面上，且圍繞光源模組之發光二極體元件。光反射層於透光板體之一正投影至少部份重疊反光片材。 In one or more embodiments of the present invention, the thin direct type backlight module further includes a reflective sheet. The reflective sheet is stacked on the bottom surface of the light transmissive plate body, and the reflective sheet comprises a plurality of through holes, and the protruding portions respectively pass through the through holes one by one. Each light source module further includes a light reflecting layer. The light reflecting layer is located on the surface of the wiring board of the light source module and surrounds the light emitting diode component of the light source module. The light reflecting layer is orthographically projected on one of the light transmissive plates to at least partially overlap the reflective sheet.
在本發明一或多個實施方式中，每個配線板可拆卸地對位於其中一末端端面上。 In one or more embodiments of the present invention, each of the wiring boards is detachably positioned on one of the end faces.
在本發明一或多個實施方式中，每個配線板具有至少一第一對位單元，每個凸出部包含至少一第二對位單元。第二對位單元可拆卸地結合第一對位單元。 In one or more embodiments of the present invention, each of the wiring boards has at least one first alignment unit, and each of the protrusions includes at least one second alignment unit. The second alignment unit detachably couples the first alignment unit.
在本發明一或多個實施方式中，第一對位單元為一第一凸塊，第二對位單元為一凹槽，凹槽位於其中一末端 端面，以接受第一凸塊。 In one or more embodiments of the present invention, the first alignment unit is a first bump, the second alignment unit is a groove, and the groove is located at one end End face to accept the first bump.
在本發明一或多個實施方式中，第一對位單元為一第二凸塊，第二對位單元為一凹溝，第二凸塊位於其中一末端端面上，凹溝呈弧形狀，且凹溝的寬度自凹溝之一末端朝另一末端的方向逐漸縮小。第二凸塊伸入凹溝內且旋移至凹溝的另一末端時，第二凸塊受固定於凹溝的另一末端。 In one or more embodiments of the present invention, the first alignment unit is a second protrusion, the second alignment unit is a groove, and the second protrusion is located on one end end surface thereof, and the groove is curved. And the width of the groove gradually decreases from one end of the groove toward the other end. When the second projection extends into the groove and is rotated to the other end of the groove, the second projection is fixed to the other end of the groove.
依據本發明之一實施方式，此種薄型直下式背光模組之製作方法，包含步驟如下。(A)於滾輪對滾輪熱擠壓機具，以熱料擠壓抽出成型方式，將許多塑膠粒子熔融後形成一導光板，並定義該導光板之底面朝上；(B)以一履帶機具將一塑型上模板與一塑型下模板，同步壓合該導光板，進而於該導光板上形成多個凸出部與多個錐形凹部，且分別彼此對齊，其中該塑型上模板係用以成形該些凸出部於該導光板之朝上的底面，且該塑型下模板係用以成形該些錐形凹部於該導光板之朝下的頂面；(C)疊設一反光片材至該導光板之朝上的底面，且該反光片材具有多個貫穿口以分別供該些凸出部穿設；(D)分別放置多個彼此實體分隔之光源模組至該些凸出部之末端端面，各該些錐形凹部內之一尖端底部因而得以對準相對應之各該些光源模組之一發光二極體元件；以及(E)利用多個可撓式導接件電性導接任二相鄰之該些光源模組，進而吸收組裝對位的公差。 According to an embodiment of the present invention, a method for fabricating the thin direct type backlight module includes the following steps. (A) In the roller-to-roller hot extrusion tool, the hot material is extruded and extruded, and a plurality of plastic particles are melted to form a light guide plate, and the bottom surface of the light guide plate is defined upward; (B) a crawler tool will be used a molding upper template and a molding lower template synchronously pressing the light guiding plate, thereby forming a plurality of protrusions and a plurality of conical recesses on the light guiding plate, and respectively aligning with each other, wherein the molding template is Forming the protrusions on the upwardly facing bottom surface of the light guide plate, and the molding lower template is used for forming the tapered recesses on the downward facing top surface of the light guide plate; (C) stacking one a reflective sheet to the upwardly facing bottom surface of the light guide plate, and the reflective sheet has a plurality of through openings for respectively penetrating the protrusions; (D) respectively placing a plurality of light source modules physically separated from each other The end faces of the protrusions, one of the tip ends of each of the tapered recesses is thus aligned with one of the corresponding light source diode elements; and (E) utilizing a plurality of flexible The conductive member is electrically connected to any of the adjacent light source modules, thereby absorbing the tolerance of the assembled alignment
在本發明一或多個實施方式中，上述步驟(D)中，更包含步驟為，藉由每個光源模組之至少一第一對位單元 結合每個凸出部之至少一第二對位單元，光源模組得以分別一對一地對位至凸出部之末端端面。 In one or more embodiments of the present invention, the step (D) further includes the step of: at least one first alignment unit of each light source module In combination with at least one second alignment unit of each of the protrusions, the light source modules are respectively aligned one to one to the end end faces of the protrusions.
如此，藉由本案上述薄型直下式背光模組與其製作方法之設計，每個發光二極體元件得以一一地獨立對準錐形凹部，不會因為發光二極體元件彼此間存在之誤差而無法精準地對準對應之錐形凹部，進而提高導光板之出光面之均勻亮度並解決面光源亮暗不勻的問題。 Thus, with the design of the above-mentioned thin direct type backlight module and the manufacturing method thereof, each of the light emitting diode elements can be independently aligned with the tapered concave portion one by one, without the error between the light emitting diode elements. It is impossible to accurately align the corresponding conical recesses, thereby improving the uniform brightness of the light-emitting surface of the light guide plate and solving the problem of unevenness of the surface light source.
10‧‧‧薄型直下式背光模組 10‧‧‧Thin type direct type backlight module
100‧‧‧導光板 100‧‧‧Light guide plate
110‧‧‧透光板體 110‧‧‧Translucent plate
111‧‧‧頂面 111‧‧‧ top surface
112‧‧‧底面 112‧‧‧ bottom
120‧‧‧凸出部 120‧‧‧protrusion
121‧‧‧末端端面 121‧‧‧End face
122‧‧‧凹陷部 122‧‧‧Depression
123‧‧‧入光面 123‧‧‧Into the glossy surface
124‧‧‧第二對位單元 124‧‧‧second alignment unit
124r‧‧‧凹槽 124r‧‧‧ Groove
124p‧‧‧第二凸塊 124p‧‧‧second bump
130‧‧‧錐形凹部 130‧‧‧Conical recess
131‧‧‧尖端底部 131‧‧‧ tip bottom
132‧‧‧凸曲面內壁 132‧‧‧ convex curved inner wall
200‧‧‧反光片材 200‧‧‧Reflective sheet
210‧‧‧貫穿口 210‧‧‧through opening
300、301‧‧‧光源模組 300, 301‧‧‧Light source module
310‧‧‧發光二極體元件 310‧‧‧Lighting diode components
311‧‧‧發光面 311‧‧‧Lighting surface
320‧‧‧配線板 320‧‧‧Wiring board
321‧‧‧光反射層 321‧‧‧Light reflection layer
322‧‧‧第一對位單元 322‧‧‧First alignment unit
322p‧‧‧第一凸塊 322p‧‧‧first bump
323‧‧‧環狀圍牆 323‧‧‧Circular wall
324‧‧‧凹溝 324‧‧ ‧ Groove
324e1‧‧‧第一末端 324e1‧‧‧ first end
324e2‧‧‧第二末端 324e2‧‧‧second end
400‧‧‧可撓式導接件 400‧‧‧Flexible guides
500‧‧‧製作設備 500‧‧‧Production equipment
600‧‧‧滾輪對滾輪熱擠壓機具 600‧‧‧Roll-to-roller hot extrusion equipment
601~605‧‧‧步驟 601~605‧‧‧Steps
610‧‧‧原料室 610‧‧‧Materials room
620‧‧‧加熱螺桿 620‧‧‧heating screw
630‧‧‧加壓模頭 630‧‧‧Pressure die
631‧‧‧出膠嘴 631‧‧‧out nozzle
640‧‧‧第一成型滾壓輪 640‧‧‧First forming rolling wheel
650‧‧‧第二成型滾壓輪 650‧‧‧Second forming rolling wheel
660‧‧‧托拉輪 660‧‧‧Tola Wheel
700‧‧‧光學圖案製作機具 700‧‧‧Optical pattern making machine
710‧‧‧第一履帶機 710‧‧‧First crawler
711‧‧‧第一履帶 711‧‧‧First crawler
712‧‧‧塑型上模板 712‧‧‧Forming template
720‧‧‧第二履帶機 720‧‧‧Second crawler
721‧‧‧第二履帶 721‧‧‧second crawler
722‧‧‧塑型下模板 722‧‧‧ molding template
d1~d3‧‧‧寬度 D1~d3‧‧‧Width
M‧‧‧區域 M‧‧‧ area
pl‧‧‧塑膠粒子 Pl‧‧‧ plastic particles
pt‧‧‧塑膠成形物 Pt‧‧‧plastic molded parts
pj1、pj2‧‧‧正投影 Pj1, pj2‧‧‧ orthographic projection
第1圖繪示依據本發明一實施方式之薄型直下式背光模組的上視圖；第2圖繪示第1圖之2-2剖面圖；第3圖繪示第2圖之分解圖；第4圖繪示本發明另一實施方式之薄型直下式背光模組的局部剖面圖，剖面位置與第2圖相同；第5A圖依據本發明之薄型直下式背光模組的製作方法所使用之製作設備的示意圖；第5B圖依據第5A圖之區域M的詳細示意圖；以及第6圖依據本發明一實施方式之薄型直下式背光模組的製作方法的流程圖。 1 is a top view of a thin direct type backlight module according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1; and FIG. 3 is an exploded view of FIG. 4 is a partial cross-sectional view of a thin direct type backlight module according to another embodiment of the present invention, the cross-sectional position is the same as that of FIG. 2; FIG. 5A is a manufacturing process of the thin direct type backlight module according to the present invention. FIG. 5B is a detailed schematic diagram of a region M according to FIG. 5A; and FIG. 6 is a flow chart of a method for fabricating a thin direct-lit backlight module according to an embodiment of the present invention.
以下將以圖式揭露本發明之複數個實施方式，為明確說明起見，許多實務上的細節將在以下敘述中一併說明。然而，應瞭解到，這些實務上的細節不應用以限制本發明。也就是說，在本發明部分實施方式中，這些實務上的細節是非必要的。此外，為簡化圖式起見，一些習知慣用的結構與元件在圖式中將以簡單示意的方式繪示之。 The embodiments of the present invention are disclosed in the following drawings, and the details of However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.
經本案發明人研究，將側入式導光板與直下式光源架構整合時，新的「直下式」背光模組會包含一勻光板(材料上屬於導光板而非擴散板，但又與一般導光板有所差異)與多個光條。勻光板包含相對設置的一出光側面與一入光側面。出光側面上排列有多個展光結構。光條分別排列於勻光板之入光側面，各光條上間隔排列多個發光二極體。發光二極體分別一一對應展光結構，使得發光二極體之光線進入勻光板後，受到展光結構之均光作用，進而在勻光板之出光側面提供均勻之面光源。然而，此一架構在實作上，由於導光板之材質大致為塑膠(例如樹脂或pp、PMMA)，在未考量濕度變數之下，塑膠可能因吸水而產生不預期的脹縮，使得上述展光結構兩兩之間的間距不一，如此，當發光二極體被安排在勻光板的入光側之對應位置時，由於每個光條上所排列之發光二極體彼此之間距以及出光側上所排列之這些展光結構彼此之間距仍存在誤差，每個光條上所排列之發光二極體無法精準地對準對應之展光結構，使得勻光板的出光側的每個展光結構之邊緣產生光線不勻勻現象，俗稱光學品味不良。 According to the inventor of the present invention, when the side-lit light guide plate is integrated with the direct-type light source structure, the new "direct-type" backlight module will include a light-shading plate (the material belongs to the light guide plate instead of the diffusion plate, but is also generally guided. The light board is different) with multiple light strips. The light-shading plate includes a light-emitting side and a light-incident side that are oppositely disposed. A plurality of light-emitting structures are arranged on the light-emitting side. The light strips are respectively arranged on the light incident side of the light homogenizing plate, and the plurality of light emitting diodes are arranged at intervals on each of the light strips. The light-emitting diodes respectively correspond to the light-expanding structure, so that the light of the light-emitting diode enters the light-shading plate, and is subjected to the uniform light effect of the light-extracting structure, thereby providing a uniform surface light source on the light-emitting side of the light-homogenizing plate. However, in this implementation, since the material of the light guide plate is roughly plastic (such as resin or pp, PMMA), the plastic may cause unexpected expansion and contraction due to water absorption without considering the humidity variation, so that the above exhibition The spacing between the two optical structures is different. Thus, when the light emitting diodes are arranged at corresponding positions on the light incident side of the light homogenizing plate, the light emitting diodes arranged on each of the light bars are spaced apart from each other and light is emitted. There is still an error between the light-guiding structures arranged on the side, and the light-emitting diodes arranged on each light strip cannot accurately align with the corresponding light-emitting structure, so that each light-emitting structure on the light-emitting side of the light-shading plate The edge of the light produces uneven light, commonly known as optical taste.
第1圖繪示依據本發明一實施方式之薄型直下式背光模組10的上視圖。第2圖繪示第1圖之2-2剖面圖。第3圖繪示第2圖之分解圖。同時參閱第1圖至第3圖所示，依據本發明之一實施方式，此種薄型直下式背光模組10包含一導光板100、多個光源模組300與多個可撓式導接件400(例如可撓式排線或可撓式電路板)。導光板100包含一透光板體110、多個凸出部120與多個錐形凹部130。透光板體110包含相對配置之一頂面111與一底面112。這些凸出部120間隔排列於透光板體110之底面112，每個凸出部120具有一末端端面121，此末端端面121上具有一入光面123。這些錐形凹部130間隔排列於透光板體110之頂面111，且分別對齊這些末端端面121，使得透光板體110之頂面111視為一出光面。 FIG. 1 is a top view of a thin direct type backlight module 10 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view taken along line 2-2 of Fig. 1. Fig. 3 is an exploded view of Fig. 2. As shown in FIG. 1 to FIG. 3 , the thin direct type backlight module 10 includes a light guide plate 100 , a plurality of light source modules 300 , and a plurality of flexible guides according to an embodiment of the present invention. 400 (for example, flexible cable or flexible circuit board). The light guide plate 100 includes a light transmissive plate body 110, a plurality of protruding portions 120 and a plurality of conical recesses 130. The light transmissive plate body 110 includes a top surface 111 and a bottom surface 112 opposite to each other. The protrusions 120 are spaced apart from the bottom surface 112 of the light-transmitting plate body 110. Each of the protrusions 120 has an end surface 121 having a light-incident surface 123. The tapered recesses 130 are spaced apart from the top surface 111 of the light-transmitting plate body 110, and are respectively aligned with the end end faces 121 such that the top surface 111 of the light-transmitting plate body 110 is regarded as a light-emitting surface.
這些光源模組300分別彼此實體分隔，每個光源模組300包含一配線板320及一發光二極體元件310。配線板320位於其中一凸出部120之末端端面121上。配線板320不限硬式印刷電路板、可撓式電路板或可撓式金屬芯印刷電路板。發光二極體元件310之一端固設於配線板320之一面上，電性連接配線板320，且發光二極體元件310之另一端接近，甚至抵接其中一入光面123。每個光源模組300之配線板320上具有單個發光二極體元件310。每個可撓式導接件400電性導接任二相鄰之配線板320，可撓式導接件400使得這些光源模組300之這些發光二極體元件310彼此電性連線。換句話說，每個光源模組300之發光二極體元 件310被夾合於配線板320與末端端面121之入光面123之間，其中發光二極體元件310一端之發光面311平貼末端端面121之入光面123。發光二極體元件310另端之腳位(圖中未示)電性連接於配線板320之表面。 The light source modules 300 are physically separated from each other, and each of the light source modules 300 includes a wiring board 320 and a light emitting diode element 310. The wiring board 320 is located on the end end surface 121 of one of the projections 120. The wiring board 320 is not limited to a hard printed circuit board, a flexible circuit board, or a flexible metal core printed circuit board. One end of the light-emitting diode element 310 is fixed on one surface of the wiring board 320, electrically connected to the wiring board 320, and the other end of the light-emitting diode element 310 is close to or even abuts one of the light-incident surfaces 123. Each of the light source modules 300 has a single light emitting diode element 310 on the wiring board 320. Each of the flexible guiding members 400 is electrically connected to any two adjacent wiring boards 320. The flexible guiding members 400 electrically connect the light emitting diode elements 310 of the light source modules 300 to each other. In other words, the light emitting diode element of each light source module 300 The member 310 is sandwiched between the wiring board 320 and the light incident surface 123 of the end surface 121. The light emitting surface 311 at one end of the LED body 310 is flat on the light incident surface 123 of the end surface 121. The other end of the LED component 310 (not shown) is electrically connected to the surface of the wiring board 320.
由於彼此實體分隔的這些發光二極體元件310可以各自獨立地配置於對應之凸出部120，以便這些發光二極體元件310得以分別精準地對準對應之錐形凹部130，進而提高導光板100之出光面之均勻亮度並解決面光源亮暗不勻的問題。此外，彼此實體分隔的這些配線板320藉由可撓式導接件400具可彎曲的特性來吸收這些配線板320組裝對位後仍存在的公差。 The light-emitting diode elements 310 that are physically separated from each other can be independently disposed on the corresponding protrusions 120, so that the light-emitting diode elements 310 can be accurately aligned with the corresponding tapered recesses 130, respectively, thereby improving the light guide plate. The uniform brightness of the light surface of 100 and solve the problem of uneven light and darkness of the surface light source. In addition, the wiring boards 320 physically separated from each other absorb the tolerances that are still present after the alignment of the wiring boards 320 by the flexible characteristics of the flexible guiding members 400.
更具體地，每個凸出部120突出於透光板體110之底面112，意即，每個凸出部120之末端端面121與透光板體110之底面112不共面，且高出於透光板體110之底面112。每個錐形凹部130包含一尖端底部131及一凸曲面內壁132。凸曲面內壁132連接尖端底部131與透光板體110之頂面111，介於尖端底部131與透光板體110之頂面111之間，且圍繞尖端底部131，甚至完整地圍繞尖端底部131。每個錐形凹部130之尖端底部131對其所對齊之配線板320之一正投影pj1經過其發光二極體元件310之發光面311。換言之，凸曲面內壁132之剖面係為二弧線，這兩個弧線分別由錐形凹部130二相對側之透光板體110之底面112相互對稱且彎弧地向下延伸，最終彼此相交並共同指向發光二極體元件310之末端係形成尖端底部131。各弧線係為 由複數個不同斜率之線條所組成之曲線。 More specifically, each of the protrusions 120 protrudes from the bottom surface 112 of the light-transmitting plate body 110, that is, the end surface 121 of each of the protrusions 120 is not coplanar with the bottom surface 112 of the light-transmitting plate body 110, and is higher than The bottom surface 112 of the light transmissive plate body 110. Each tapered recess 130 includes a tip end portion 131 and a convex curved inner wall 132. The convex curved inner wall 132 connects the tip bottom portion 131 and the top surface 111 of the light transmissive plate body 110 between the tip bottom portion 131 and the top surface 111 of the light transmissive plate body 110, and surrounds the tip bottom portion 131, even completely surrounding the tip bottom portion. 131. The tip end portion 131 of each tapered recess 130 is orthographically projected by one of the wiring boards 320 to which it is aligned, through the light emitting surface 311 of its light emitting diode element 310. In other words, the cross-section of the convex curved inner wall 132 is a two-curve line, and the two arcs are respectively symmetrical and curved downwardly from the bottom surface 112 of the translucent plate body 110 on the opposite sides of the conical recess 130, and finally intersect each other and The ends of the common LED element 310 are formed to form a tip end 131. Each arc is A curve consisting of a plurality of lines of different slopes.
在本實施方式中，每個錐形凹部130例如圓錐形，若俯視透光板體110之底面112時，錐形凹部130於透光板體110之底面112則呈現出圓形開口，錐形凹部130內之中心點即為尖端底部131。然而，本發明不限於此，其他實施方式中，錐形凹部也可呈方錐形。 In the present embodiment, each of the conical recesses 130 has a conical shape. When the bottom surface 112 of the translucent plate body 110 is viewed from above, the conical recesses 130 have a circular opening on the bottom surface 112 of the translucent plate body 110. The center point in the recess 130 is the tip end 131. However, the present invention is not limited thereto, and in other embodiments, the tapered recess may also have a square pyramid shape.
在本實施方式中，每個凸出部120呈柱體(泛指圓柱體、方柱體、截頂圓錐或平截頭體)，故，末端端面121呈圓形或多邊形。末端端面121更凹設有一凹陷部122。入光面123位於凹陷部122內，每個光源模組300之發光二極體元件310伸入其對應之凹陷部122內，並朝入光面123發光。在本實施方式中，入光面123位於凹陷部122底部，即發光二極體元件310之發光面311平貼凹陷部122底部。然而，本發明不限於此，其他實施方式中，凸出部也可不具凹陷部，讓發光二極體元件直接平貼末端端面。 In the present embodiment, each of the protruding portions 120 is a cylinder (generally referred to as a cylinder, a square cylinder, a truncated cone or a frustum), and therefore, the end surface 121 is circular or polygonal. The end surface 121 is further recessed with a recess 122. The light-emitting surface 123 is located in the recessed portion 122. The light-emitting diode element 310 of each light source module 300 extends into the corresponding recessed portion 122 and emits light toward the light-incident surface 123. In the present embodiment, the light incident surface 123 is located at the bottom of the recess portion 122, that is, the light emitting surface 311 of the light emitting diode element 310 is flat on the bottom of the recess portion 122. However, the present invention is not limited thereto. In other embodiments, the protruding portion may not have a recessed portion, so that the light emitting diode element directly aligns with the end end surface.
如此，當發光二極體元件310之光線透過入光面123發射光線進入透光板體110，且分別抵達每個錐形凹部130之凸曲面內壁132時，這些光線會在每個凸曲面內壁132上產生全反射，使得這些光線會隨光程路徑發散，最終於透光板體110之頂面111(即出光面)上的光學微結構(pattern，圖未示)引導出來，藉以成為均勻出光面。 Thus, when the light of the LED body 310 transmits light through the light incident surface 123 into the light transmissive plate body 110 and reaches the convex curved inner wall 132 of each of the conical recesses 130, respectively, the light will be on each convex curved surface. The total reflection is generated on the inner wall 132, so that the light is diverged along the path of the optical path, and finally guided by an optical microstructure (not shown) on the top surface 111 (ie, the light-emitting surface) of the transparent plate body 110. Become a uniform light surface.
在本實施方式中，薄型直下式背光模組10更包含一反光片材200。反光片材200包含多個貫穿口210，貫穿口210間隔地形成於反光片材200上，如此上述這些凸出 部120得以分別一對一地穿過這些貫穿口210，讓反光片材200得以直接疊放於透光板體110之底面112上。如此，反光片材200改變透光板體110內之光線之行進方向，以致光線得以從透光板體110之頂面111(即出光面)離開透光板體110。在本實施方式中，反光片材200例如為具樹脂亮光漆或金屬鍍面之片體。然而，本發明不限於此，其他實施方式中，反光片材也可為具反光特性之金屬板。 In the embodiment, the thin direct type backlight module 10 further includes a reflective sheet 200. The reflective sheet 200 includes a plurality of through holes 210 formed at intervals on the reflective sheet 200 such that the above-mentioned protrusions The portions 120 are respectively passed through the through holes 210 one-to-one, so that the reflective sheet 200 is directly stacked on the bottom surface 112 of the light-transmitting plate body 110. Thus, the retroreflective sheeting 200 changes the direction of travel of the light within the light transmissive plate body 110 such that light exits the light transmissive plate body 110 from the top surface 111 (ie, the light exiting surface) of the light transmissive plate body 110. In the present embodiment, the light-reflecting sheet 200 is, for example, a sheet having a resin varnish or a metal plated surface. However, the present invention is not limited thereto, and in other embodiments, the reflective sheet may also be a metal plate having a reflective property.
此外，為了更有效地利用發光二極體元件310之光線，每個光源模組300更包含一光反射層321。光反射層321貼設於光源模組300之配線板320也設有發光二極體元件310之那面，且圍繞此發光二極體元件310。光反射層321朝透光板體110投射之一正投影pj2至少部份重疊反光片材200。由於光反射層321之位置與反光片材200之位置至少部份重疊，使得透光板體110內之光線皆可以被反光片材200與光反射層321反射至透光板體110之頂面111(即出光面)。然而，在本實施方式中，光反射層例如為反光材。然而，本發明不限於此。 In addition, in order to utilize the light of the LED component 310 more effectively, each of the light source modules 300 further includes a light reflecting layer 321 . The light reflecting layer 321 is attached to the surface of the wiring board 320 of the light source module 300 and also provided with the light emitting diode element 310, and surrounds the light emitting diode element 310. The light reflecting layer 321 projects one of the orthographic projections pj2 toward the light transmissive plate body 110 to at least partially overlap the reflective sheet 200. Since the position of the light reflecting layer 321 and the position of the reflective sheet 200 at least partially overlap, the light in the transparent plate body 110 can be reflected by the reflective sheet 200 and the light reflecting layer 321 to the top surface of the transparent plate body 110. 111 (ie, the light surface). However, in the present embodiment, the light reflecting layer is, for example, a light reflecting material. However, the invention is not limited thereto.
為了讓裝配者都可快速地將每個光源模組300對位於對應之凸出部120上，每個光源模組300都可透過記號可拆卸地安裝於對應之凸出部120之末端端面121上，使得每個錐形凹部130之尖端底部131都可準確地分別對齊這些發光二極體元件310之發光面311，甚至對齊這些發光二極體元件310之發光面311之中心點。 In order to allow the assembler to quickly position each of the light source modules 300 on the corresponding protrusions 120, each of the light source modules 300 can be detachably mounted on the end end surface 121 of the corresponding protrusion 120 through the mark. The tip end portion 131 of each of the tapered recesses 130 can accurately align the light emitting faces 311 of the light emitting diode elements 310, respectively, even the center points of the light emitting faces 311 of the light emitting diode elements 310.
在本實施方式中，每個配線板320具有至少一第一 對位單元322，每個凸出部120包含至少一第二對位單元124。第二對位單元124可拆卸地結合第一對位單元322。如此，透過第一對位單元322與第二對位單元124之結合，使得每個光源模組300之配線板320得以可拆卸地對位於對應之凸出部120之末端端面121上。 In this embodiment, each of the wiring boards 320 has at least one first For the alignment unit 322, each of the protrusions 120 includes at least one second alignment unit 124. The second alignment unit 124 detachably couples the first alignment unit 322. Thus, through the combination of the first aligning unit 322 and the second aligning unit 124, the wiring board 320 of each light source module 300 is detachably positioned on the end end surface 121 of the corresponding protruding portion 120.
只要第一對位單元322與第二對位單元124能彼此相互對位與結合，本發明不限第一對位單元322與第二對位單元124之外型與結合方式。舉例來說，第一對位單元322為第一凸塊322p，例如預先形成於配線板320表面上。第二對位單元124為凹槽124r，凹槽124r形成於凸出部120之末端端面121表面，凹槽124r之外型與大小與第一凸塊322p之外型與大小彼此匹配，透過第一凸塊322p與凹槽124r之相互嵌合，以方便裝配者順利將光源模組300對位於對應之凸出部120上。然而，本發明不限於此，其他實施方式中，第一對位單元與第二對位單元也可互換為凹槽與凸塊。 As long as the first aligning unit 322 and the second aligning unit 124 can be aligned and combined with each other, the present invention is not limited to the first aligning unit 322 and the second aligning unit 124. For example, the first alignment unit 322 is the first bump 322p, for example, formed on the surface of the wiring board 320 in advance. The second alignment unit 124 is a groove 124r. The groove 124r is formed on the surface of the end surface 121 of the protrusion 120. The shape and size of the groove 124r and the shape and size of the first protrusion 322p match each other. A bump 322p and the groove 124r are fitted to each other to facilitate the assembly of the light source module 300 on the corresponding protrusion 120. However, the present invention is not limited thereto. In other embodiments, the first aligning unit and the second aligning unit may also be interchanged as grooves and bumps.
如此，只要任一光源模組300之配線板320透過第一凸塊322p嵌合於凹槽124r內，此配線板320上之發光二極體元件310之發光面311恰可被對應之錐形凹部130之尖端底部131準確地對齊。 Thus, as long as the wiring board 320 of any of the light source modules 300 is inserted into the recess 124r through the first bump 322p, the light emitting surface 311 of the LED body 310 on the wiring board 320 can be correspondingly tapered. The tip end 131 of the recess 130 is accurately aligned.
第4圖繪示本發明另一實施方式之薄型直下式背光模組10的局部剖面圖，剖面位置與第2圖相同。如第4圖所示，本實施方式與上述實施方式之背光模組大致相同，其差異之一為，第一對位單元322為凹溝324，凹溝 324形成於配線板320上之一環狀圍牆323上。本實施方式中，環狀圍牆323係利用點膠機等點膠技術，以點膠成型的方式於配線板320設有發光二極體元件310之那面上形成可圍繞發光二極體元件310之圍牆。凹溝324呈弧形狀(如C形)，且具有相對之第一末端324e1與第二末端324e2。凹溝324的寬度非一致，凹溝324的寬度變化自凹溝324之第一末端324e1朝第二末端324e2的方向逐漸縮小。第二對位單元124為第二凸塊124p。第二凸塊124p形成於凸出部120之末端端面121上，且突出於末端端面121。 FIG. 4 is a partial cross-sectional view showing a thin direct type backlight module 10 according to another embodiment of the present invention, and the cross-sectional position is the same as that of FIG. 2 . As shown in FIG. 4 , the present embodiment is substantially the same as the backlight module of the above embodiment, and one of the differences is that the first alignment unit 322 is a concave groove 324 and a groove. 324 is formed on one of the annular walls 323 on the wiring board 320. In the present embodiment, the annular wall 323 is formed by a dispensing technique such as a dispenser to form a light-emitting diode element 310 on the surface of the wiring board 320 on which the light-emitting diode element 310 is disposed. The wall. The groove 324 has an arc shape (such as a C shape) and has a first end 324e1 and a second end 324e2 opposite to each other. The width of the groove 324 is not uniform, and the width of the groove 324 is gradually reduced from the first end 324e1 of the groove 324 toward the second end 324e2. The second alignment unit 124 is the second bump 124p. The second bump 124p is formed on the end end surface 121 of the protrusion 120 and protrudes from the end end surface 121.
如此，當每個光源模組301之配線板320欲對位至凸出部120之末端端面121上時，可讓第二凸塊124p(參考虛線之第二凸塊124p)伸入凹溝324內，並待旋移配線板320，使得連動之第二凸塊124p旋移至凹溝324的第二末端324e2(參考實線之第二凸塊124p)時，由於第二凸塊124p之寬度d3大於凹溝324的第二末端324e2之寬度d2，第二凸塊124p受夾合於凹溝324的第二末端324e2內。反之，當旋移此光源模組301之配線板320，使得連動之第二凸塊124p旋移至凹溝324的第一末端324e1時，由於第二凸塊124p之寬度d3小於凹溝324的第一末端324e1之寬度d1，第二凸塊124p脫離凹溝324的夾合。 Thus, when the wiring board 320 of each light source module 301 is to be aligned to the end end surface 121 of the protrusion 120, the second protrusion 124p (refer to the second protrusion 124p of the dotted line) can be extended into the groove 324. And rotating the wiring board 320 so that the interlocking second bump 124p is rotated to the second end 324e2 of the recess 324 (refer to the second bump 124p of the solid line), due to the width of the second bump 124p D3 is larger than the width d2 of the second end 324e2 of the groove 324, and the second bump 124p is sandwiched in the second end 324e2 of the groove 324. On the other hand, when the wiring board 320 of the light source module 301 is rotated such that the linked second bump 124p is rotated to the first end 324e1 of the groove 324, the width d3 of the second bump 124p is smaller than that of the groove 324. The width d1 of the first end 324e1 and the second bump 124p are separated from the recess 324.
第5A圖依據本發明之薄型直下式背光模組的製作方法所使用之製作設備的示意圖；第5B圖依據第5A圖之區域M的詳細示意圖。如第5A圖~第5B圖所示，上述之 製作設備500包含一滾輪對滾輪熱擠壓機具600以及一光學圖案製作機具700。滾輪對滾輪熱擠壓機具600位於上述製作方法之前端。更具體地，滾輪對滾輪熱擠壓機具600包含一原料室610、一加熱螺桿620、一加壓模頭630、相並排之二第一成型滾壓輪640、一第二成型滾壓輪650及相並排之二托拉輪660。原料室610內放置有塑膠粒子pl。加熱螺桿620接通原料室610與加壓模頭630。此二第一成型滾壓輪640鄰近加壓模頭630之出膠嘴631，用以控制透光板體110的厚度。第二成型滾壓輪650與第一成型滾壓輪640並列排列，用以引導透光板體110的移動方向。 5A is a schematic view of a manufacturing apparatus used in a method of fabricating a thin direct type backlight module according to the present invention; and FIG. 5B is a detailed schematic view of a region M according to FIG. 5A. As shown in Figures 5A to 5B, the above The fabrication apparatus 500 includes a roller-to-roller hot extrusion tool 600 and an optical patterning tool 700. The roller-to-roller hot extrusion tool 600 is located at the front end of the above manufacturing method. More specifically, the roller-to-roller hot extrusion tool 600 includes a raw material chamber 610, a heating screw 620, a pressing die 630, two side-by-side first forming rolling wheels 640, and a second forming rolling wheel 650. And side by side two tow wheel 660. Plastic particles pl are placed in the raw material chamber 610. The heating screw 620 turns on the raw material chamber 610 and the pressurizing die 630. The two first forming rolling wheels 640 are adjacent to the dispensing nozzle 631 of the pressing die 630 for controlling the thickness of the transparent plate body 110. The second forming rolling wheel 650 is arranged side by side with the first forming rolling wheel 640 for guiding the moving direction of the light transmitting plate body 110.
進一步來說，塑膠粒子之材質例如可分別為聚丙烯(Polypropylene，PP)，丙烯腈-苯乙烯-丁二烯共聚物(ABS樹脂，Acrylonitrile Butadiene Styrene，ABC)、聚對苯二甲酸乙二酯(polyethylene Terephthalate，PET)、聚苯乙烯(polystyrene，PS)、聚碳酸酯(polycarbonate，PC)、聚亞醯胺(Polyimide)或聚甲基丙烯酸甲酯(Poly(methyl methacrylate)，PMMA)或其組合。 Further, the material of the plastic particles may be, for example, polypropylene (PP), acrylonitrile-styrene-butadiene copolymer (ABS resin, Acrylonitrile Butadiene Styrene, ABC), polyethylene terephthalate. (polyethylene Terephthalate, PET), polystyrene (PS), polycarbonate (PC), polyimide or poly(methyl methacrylate), PMMA or combination.
如第5B圖所示，在本實施方式中，光學圖案製作機位於上述製作方法之後端，光學圖案製作機具700包含至少一第一履帶機710與第二履帶機720。第一履帶機710具有一可循環轉動之第一履帶711與多個塑型上模板712。第一履帶711朝順時針方向轉動時，這些塑型上模板712也朝順時針方向依序被帶動。這些塑型上模板712等距地固定於第一履帶711上。第二履帶機720具有一可循環 轉動之第二履帶721與多個塑型下模板722。這些塑型下模板722等距地固定於第二履帶721上。第二履帶721朝逆時針方向轉動時，這些塑型下模板722也朝逆時針方向依序被帶動。 As shown in FIG. 5B, in the present embodiment, the optical pattern maker is located at the rear end of the manufacturing method, and the optical pattern forming apparatus 700 includes at least one first crawler 710 and second crawler 720. The first crawler 710 has a first crawler belt 711 that is rotatably rotatable and a plurality of molded upper templates 712. When the first crawler belt 711 is rotated in the clockwise direction, the molded upper templates 712 are also sequentially driven in the clockwise direction. These molded upper templates 712 are fixed to the first crawler belt 711 equidistantly. The second crawler 720 has a recyclable The second crawler belt 721 is rotated and the plurality of molded lower templates 722. These molded lower templates 722 are fixed to the second crawler belt 721 equidistantly. When the second crawler belt 721 is rotated in the counterclockwise direction, the molded lower template 722 is also sequentially driven in the counterclockwise direction.
第6圖依據本發明一實施方式之薄型直下式背光模組的製作方法的流程圖。如第5A圖、第5B圖與第6圖所示，本實施方式之製作方法大略如下之步驟601~605所示。在步驟601中，於滾輪對滾輪(roll to roll)熱擠壓機具600，以熱料擠壓抽出成型方式，將許多塑膠粒子pl熔融後形成上述之透光板體110，並定義上述之透光板體110之底面112朝上；在步驟602中，分別以履帶機具710、720將塑型上模板712與塑型下模板722，同步壓合上述之透光板體110，進而於上述之透光板體110之底面112與頂面111分別形成凸出部120與錐形凹部130，其中塑型上模板712係用以成形凸出部120於透光板體110之朝上的底面112，且塑型下模板係用以成形錐形凹部130於透光板體110之朝下的頂面111；在步驟603中，將上述反光片材200(見第3圖)疊設至透光板體110朝上的底面112，且反光片材200之貫穿口210分別供凸出部120穿過；在步驟604中，分別放置多個彼此實體分隔之上述光源模組300(見第3圖)至這些凸出部120之末端端面121，此時錐形凹部130內之尖端底部131(見第3圖)因而恰得以對準相對應發光二極體元件310；以及在步驟605中，利用上述可撓式導接件400電性導接二相鄰之光源模組300，進而吸收組裝對位 的公差。 FIG. 6 is a flow chart of a method for fabricating a thin direct type backlight module according to an embodiment of the present invention. As shown in FIGS. 5A, 5B, and 6 , the manufacturing method of the present embodiment is roughly as shown in the following steps 601 to 605. In step 601, a roll-to-roll hot extrusion tool 600 is formed by hot extrusion extrusion molding, and a plurality of plastic particles pl are melted to form the above-mentioned light-transmissive plate body 110, and the above-mentioned transparent plate body is defined. The bottom surface 112 of the light plate body 110 faces upward; in step 602, the molded upper template 712 and the molded lower template 722 are respectively press-fitted to the transparent transparent plate body 110 by the crawler tools 710 and 720, and then the above-mentioned light-transmissive plate body 110 is further The bottom surface 112 and the top surface 111 of the light transmissive plate body 110 respectively form a convex portion 120 and a conical concave portion 130, wherein the molding upper template 712 is used to form the convex portion 120 on the upwardly facing bottom surface 112 of the transparent plate body 110. And molding the lower template to form the tapered concave portion 130 on the downward facing top surface 111 of the transparent plate body 110; in step 603, the reflective sheet 200 (see FIG. 3) is superposed on the transparent substrate The bottom surface 112 of the plate body 110 faces upward, and the through holes 210 of the reflective sheet 200 respectively pass through the protruding portion 120; in step 604, a plurality of the light source modules 300 physically separated from each other are respectively placed (see FIG. 3). ) to the end end face 121 of the projections 120, at which point the tip end 131 in the conical recess 130 (see Fig. 3) is thus Aligning with the corresponding light-emitting diode element 310; and in step 605, electrically connecting the two adjacent light source modules 300 by using the flexible conductive member 400, thereby absorbing the assembly alignment Tolerance.
如此，無論導光板之塑膠材質之吸水程度為何，導致錐形凹部之間的間距不同時，由於光源模組之發光二極體元件是個別地獨立地配置於對應之凸出部，這些發光二極體元件被各自獨立地且精準地對準對應之錐形凹部，進而避免人力與維修成本的上升。 In this way, regardless of the degree of water absorption of the plastic material of the light guide plate, when the pitch between the tapered recesses is different, since the light emitting diode elements of the light source module are individually and independently arranged in the corresponding protruding portions, the light emitting two The polar body elements are each independently and precisely aligned with the corresponding conical recesses, thereby avoiding an increase in labor and maintenance costs.
在本實施方式之步驟601中，如第5A圖所示，更具體地，當加熱螺桿620對塑膠粒子pl加熱，並將塑膠粒子pl引導至加壓模頭630後，熔化後的塑膠粒子pl經由加壓模頭630之出膠嘴631而連續地輸出到外界，以射出成型連續之塑膠成形物pt。塑膠成形物pt通過此二第一成型滾壓輪640之間，使得此二第一成型滾壓輪640一方面將塑膠成形物pt壓成上述之透光板體110，另一方面引導此透光板體110朝第二成型滾壓輪650之方向前進。同時托拉輪660用以提供拖引透光板體110的拉力，以便加速透光板體110被輸送之速度。 In step 601 of the present embodiment, as shown in FIG. 5A, more specifically, when the heating screw 620 heats the plastic particles pl and guides the plastic particles pl to the pressurizing die 630, the molten plastic particles pl The nozzle 631 of the press die 630 is continuously output to the outside to inject and form a continuous plastic formed product pt. The plastic forming object pt passes between the two first forming rolling wheels 640, so that the two first forming rolling wheels 640 press the plastic formed object pt into the above-mentioned transparent plate body 110 on the one hand, and guide the through-through on the other hand. The light plate body 110 advances in the direction of the second forming rolling wheel 650. At the same time, the roller 660 is used to provide a pulling force for towing the light-transmitting plate body 110 to accelerate the speed at which the light-transmitting plate body 110 is conveyed.
在本實施方式之步驟602中，如第5A圖與第5B圖所示，更具體地，當此透光板體110通過第二成型滾壓輪650或托拉輪660之後，透過其中一塑型下模板722與塑型上模板712之共同壓制，透光板體110之底面112與頂面111之對應位置同時形成相互對齊之凸出部120與錐形凹部130。 In step 602 of the embodiment, as shown in FIGS. 5A and 5B, more specifically, after the light transmissive plate 110 passes through the second forming rolling wheel 650 or the pulling roller 660, through one of the plastic The lower template 722 and the molding upper template 712 are pressed together, and the corresponding positions of the bottom surface 112 and the top surface 111 of the transparent plate body 110 simultaneously form the convex portions 120 and the tapered concave portions 130 which are aligned with each other.
在本實施方式之步驟603中，如第3圖所示，更具體地，組裝者將反光片材200疊設至透光板體110朝上的 底面112，使得透光板體110之凸出部120皆一一穿過反光片材200之貫穿口210。由於貫穿口210大小遠大於凸出部120，無論導光板之塑膠材質之吸水程度為何，導致凸出部120之間的間距不同時，貫穿口210仍足以容納凸出部120。 In step 603 of the present embodiment, as shown in FIG. 3, more specifically, the assembler stacks the retroreflective sheeting 200 to the light-transmitting plate body 110 facing upward. The bottom surface 112 allows the protruding portions 120 of the light-transmitting plate body 110 to pass through the through-holes 210 of the reflective sheet 200 one by one. Since the size of the through hole 210 is much larger than that of the protruding portion 120, the through hole 210 is still sufficient to accommodate the protruding portion 120 when the distance between the protruding portions 120 is different regardless of the degree of water absorption of the plastic material of the light guiding plate.
在本實施方式之步驟604中，如第3圖所示，由於組裝者將每個光源模組300之單個發光二極體元件310分別一一對準錐形凹部130內之尖端底部131已克服因為發光二極體元件彼此間存在之誤差而無法精準地對準對應之錐形凹部的問題。如此，更具體地，在本實施方式之步驟604中，藉由上述第一對位單元322與第二對位單元124可相互對位之特性，組裝者可快速地將各個上述光源模組300安裝至這些凸出部120之末端端面121。此外，為了讓組裝者可快速地將各個上述光源模組300安裝至這些凸出部120之末端端面121，在步驟602中，塑型上模板712，可直接形成上述第二對位單元124於凸出部120上。 In step 604 of the present embodiment, as shown in FIG. 3, since the assembler individually aligns the individual light-emitting diode elements 310 of each light source module 300 one by one with the tip end portion 131 in the tapered recess 130, the overcome has been overcome. The problem of accurately aligning the corresponding tapered recesses due to errors in the light-emitting diode elements with each other. In this way, in the step 604 of the embodiment, by the characteristics that the first aligning unit 322 and the second aligning unit 124 can be aligned with each other, the assembler can quickly set each of the light source modules 300. Mounted to the end end faces 121 of the projections 120. In addition, in order to allow the assembler to quickly mount each of the light source modules 300 to the end end faces 121 of the protrusions 120, in step 602, the upper template 712 can be formed to directly form the second alignment unit 124. On the projection 120.
最後，上述所揭露之各實施例中，並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，皆可被保護於本發明中。因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Finally, the various embodiments disclosed above are not intended to limit the invention, and those skilled in the art can be protected in various modifications and refinements without departing from the spirit and scope of the invention. In the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
10‧‧‧薄型直下式背光模組 10‧‧‧Thin type direct type backlight module
100‧‧‧導光板 100‧‧‧Light guide plate
110‧‧‧透光板體 110‧‧‧Translucent plate
111‧‧‧頂面 111‧‧‧ top surface
112‧‧‧底面 112‧‧‧ bottom
120‧‧‧凸出部 120‧‧‧protrusion
121‧‧‧末端端面 121‧‧‧End face
122‧‧‧凹陷部 122‧‧‧Depression
123‧‧‧入光面 123‧‧‧Into the glossy surface
124‧‧‧第二對位單元 124‧‧‧second alignment unit
124r‧‧‧凹槽 124r‧‧‧ Groove
130‧‧‧錐形凹部 130‧‧‧Conical recess
131‧‧‧尖端底部 131‧‧‧ tip bottom
132‧‧‧凸曲面內壁 132‧‧‧ convex curved inner wall
200‧‧‧反光片材 200‧‧‧Reflective sheet
210‧‧‧貫穿口 210‧‧‧through opening
300‧‧‧光源模組 300‧‧‧Light source module
310‧‧‧發光二極體元件 310‧‧‧Lighting diode components
311‧‧‧發光面 311‧‧‧Lighting surface
320‧‧‧配線板 320‧‧‧Wiring board
321‧‧‧光反射層 321‧‧‧Light reflection layer
322‧‧‧第一對位單元 322‧‧‧First alignment unit
322p‧‧‧第一凸塊 322p‧‧‧first bump
400‧‧‧可撓式導接件 400‧‧‧Flexible guides
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103144360A TWI526749B (en) | 2014-12-18 | 2014-12-18 | Thin direct-light-type backlight module and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103144360A TWI526749B (en) | 2014-12-18 | 2014-12-18 | Thin direct-light-type backlight module and its manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI526749B true TWI526749B (en) | 2016-03-21 |
| TW201624077A TW201624077A (en) | 2016-07-01 |
Family
ID=56085490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW103144360A TWI526749B (en) | 2014-12-18 | 2014-12-18 | Thin direct-light-type backlight module and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI526749B (en) |
-
2014
- 2014-12-18 TW TW103144360A patent/TWI526749B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TW201624077A (en) | 2016-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2530515B1 (en) | Optical film and method for manufacturing the same and liquid crystal display device using the same | |
| US20080013015A1 (en) | Light Guide Plate and Liquid Crystal Display Device Having the Same | |
| US20050036083A1 (en) | Optical member, method for manufacturing the same, surface emitting device, and liquid crystal display device | |
| JP2009164101A (en) | Backlight | |
| EP2372416A1 (en) | Light redirecting bar with diffusion features | |
| JP2010118240A (en) | Optical member, backlight unit, and display device | |
| TWI524121B (en) | Backlight module and optical plate structure thereof | |
| KR102123456B1 (en) | Liquid crystal display device | |
| US20080123194A1 (en) | Two-layered optical plate and method for making the same | |
| US20100182801A1 (en) | Printed ultra thin light guiding plate | |
| US20190179192A1 (en) | Curved liquid crystal display device | |
| TWI457662B (en) | Backlight module | |
| JP2004151346A (en) | Lighting unit, liquid crystal display device, and method for manufacturing diffusion sheet | |
| US9453957B2 (en) | Bottom chassis, method of manufacturing the same, and display apparatus including the same | |
| TWI526749B (en) | Thin direct-light-type backlight module and its manufacture method | |
| JP2009109829A (en) | Optical sheet, backlight unit, and display | |
| JP4992280B2 (en) | Liquid crystal display | |
| JP5648075B2 (en) | Method for manufacturing shape transfer resin sheet and resin sheet | |
| CN204302627U (en) | Slim down straight aphototropism mode set | |
| US9753209B2 (en) | Light guide plate, and backlight unit and display device including the same | |
| TWI498612B (en) | An optical sheet, a surface light source device, and a light transmission type image display device | |
| JP5070891B2 (en) | Optical sheet and backlight unit and display using the same | |
| JP2011048075A (en) | Optical sheet and backlight unit with the same, and display apparatus with the backlight unit | |
| KR102056667B1 (en) | Backlight unit and liquid crystal display device using the same | |
| KR20130028270A (en) | Reflecting sheet and method for manufacturing the same, liquid crystal display device including reflecting sheet |