TWI401504B - Backlight module - Google Patents
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- TWI401504B TWI401504B TW97136611A TW97136611A TWI401504B TW I401504 B TWI401504 B TW I401504B TW 97136611 A TW97136611 A TW 97136611A TW 97136611 A TW97136611 A TW 97136611A TW I401504 B TWI401504 B TW I401504B
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Description
本發明係關於一種背光模組，尤其係指一種能夠省去背板的使用，並能減輕模組重量、降低製造成本之背光模組。 The present invention relates to a backlight module, and more particularly to a backlight module capable of eliminating the use of the backplane and reducing the weight of the module and reducing the manufacturing cost.
依據光源所設置之位置分有前光源(Front light)及背光源(Back light)，而一般使用於LCD等平面型顯示裝置之發光模組幾乎均使用背光源。一般的背光模組基本的元件組成包括有光源、反射片、導光板、擴散片等，上述的元件經一框體組裝後，並藉由一背板提供背光模組之支撐體來支撐元件以形成一整體之結構，再將此背光模組依需要與印刷電路板、驅動迴路等進行結合。又，背光模組又分為側光式背光模組及直下式背光模組，側光式背光模組之光源係設置於反射片之側邊，光線經由側向投射至反射片後朝上反射以提供所需光線亮度，再經由導光板調整光線之路徑，最後並經擴散片將光線均勻地朝上發出以形成一面狀的光源；直下式背光模組之光源則是直接設置在反射片上方，光源朝下散射之光線經由反射片之反射向上後，並與光源向上散射之光線結合，集中光線強度向上提供光線照明。請參看第三圖所示，以現有之側光式背光模組結構為例進行說明，其包括有：框體(30)，係一塑化框型結構；光源(31)，係設置在該框體(30)的內側，可為LED、CCFL型式的光源；反射片(32)，係設置在該框體(30)內側之光源(31)下側；導光板(33)，係設置該框體(30)內側並位在該反射 片(32)上側與光源(31)同一水平位置；擴散片(34)，係設置該框體(30)內側並位在該導光板(33)上側；背板(35)，係設置於該反射片(32)下部以提供反射片(32)一支撐強度，其周邊係與該框體(30)結合；座盤(36)，係設置於該框體(30)外側並將所有元件加以整合為一體。上述傳統反射片(32)是以PET為基材，披覆一層氧化合物(如二氧化鈦、三氧化二鋁等)後，再上一層保護膜即完成。但上述之背光模組因為必須在反射片(32)下部設置一背板(35)，該背板(35)多係由金屬板體所構成以提供其所需的支撐強度，因此對於背光模組整體而言會增加構件的數量及成本，且由於金屬板體本身具有一定的重量，因此該背板(35)的存在將造成背光模組整體重量無法下降，如此將導致採用該背光模組之顯示器的重量無法降低，對於電子元件薄型化、輕量化的未來趨勢將無法符合需求而降低市場的競爭性。同樣地，直下式背光模組亦須在反射片的下方設置金屬材質的背板，因此存在與上述側光式背光模組相同的問題。 The front light source (Backron light source) and the backlight source (Back light) are divided according to the position where the light source is disposed, and the light-emitting module generally used for a flat display device such as an LCD uses a backlight. A basic component of a general backlight module includes a light source, a reflective sheet, a light guide plate, a diffusion sheet, etc., and the above components are assembled by a frame, and a backing plate is provided with a support body of the backlight module to support the component. Forming a whole structure, and then combining the backlight module with a printed circuit board, a driving circuit, and the like as needed. In addition, the backlight module is further divided into an edge-lit backlight module and a direct-lit backlight module. The light source of the edge-lit backlight module is disposed on the side of the reflective sheet, and the light is reflected sideways to the reflective sheet and then reflected upward. In order to provide the required light brightness, the light path is adjusted through the light guide plate, and finally the light is uniformly emitted upward through the diffusion sheet to form a one-side light source; the light source of the direct type backlight module is directly disposed above the reflection sheet. The light scattered downward by the light source is reflected upward by the reflection sheet, and combined with the light scattered upward by the light source, and the concentrated light intensity provides upward illumination. Please refer to the third figure, taking the existing edge-lit backlight module structure as an example, which comprises: a frame body (30), which is a plastic frame type structure; a light source (31) is disposed in the The inner side of the frame body (30) may be an LED or CCFL type light source; the reflection sheet (32) is disposed on the lower side of the light source (31) inside the frame body (30); and the light guide plate (33) is provided. The inside of the frame (30) is positioned in the reflection The upper side of the piece (32) is at the same horizontal position as the light source (31); the diffusion piece (34) is disposed inside the frame body (30) and is located on the upper side of the light guide plate (33); the back plate (35) is disposed on the The lower part of the reflection sheet (32) is provided with a supporting strength of the reflection sheet (32), and the periphery thereof is combined with the frame body (30); the seat plate (36) is disposed outside the frame body (30) and all components are provided Integration into one. The above conventional reflective sheet (32) is made of PET as a substrate, coated with an oxygen compound (such as titanium dioxide, aluminum oxide, etc.), and then a protective film is applied. However, since the backlight module described above must be provided with a back plate (35) under the reflective sheet (32), the back plate (35) is mostly composed of a metal plate body to provide the required supporting strength, and thus for the backlight mode. The overall increase in the number and cost of components, and because the metal plate itself has a certain weight, the presence of the back plate (35) will cause the overall weight of the backlight module to be reduced, which will result in the use of the backlight module. The weight of the display cannot be reduced, and the future trend of thinner and lighter electronic components will not meet the demand and reduce the competitiveness of the market. Similarly, the direct type backlight module must also be provided with a metal back plate under the reflective sheet, so that there is the same problem as the above-described edge type backlight module.
本發明人有鑑於上述背光模組存在需要背板來提供結構強度而造成成本增加，重量增加等問題乃積極著手從事研發，以期可以解決上述既有的問題，經過不斷的試驗及努力，終於開發出本發明。本發明之主要目的在於提供一種取代背板支撐之背光模組，如此將可以減少背板的組裝工時，在成本上可以減少背板的成本，另外並可以降低模組整體重量以符合市場需求。為了達到上述發明目的，本明係採取以下之技術手段予以達成，其中本 發明係包括有：框體，係一塑化框型結構；光源，係設置在該框體的內側；反射片，係設置在該框體內側之光源下側；導光板，係設置該框體內側並位在該反射片上側與光源同一水平位置，其中該反射片與導光板疊合後之厚度不大於該框體厚度，該反射片係由發泡成型之塑化材質製的光學反射片，其厚度大於0.5mm，該反射片之週邊係與該框體直接結合。前述光源可以為LED光源或CCFL光源。藉由上述的結構，本發明背光模組之反射片可以取代習知背板之結構強度而省去背板的使用，如此便得以使得背光模組之整體構件減少，故能降低構件成本，並減少背光模組整體重量以符合市場需求。 The present inventors have in view of the above-mentioned backlight module that there is a need for a backplane to provide structural strength, which causes an increase in cost, an increase in weight, and the like, and is actively engaged in research and development, in order to solve the above-mentioned problems, and after continuous trial and effort, finally develop The present invention has been developed. The main purpose of the present invention is to provide a backlight module that replaces the backplane support, so that the assembly time of the backplane can be reduced, the cost of the backplane can be reduced in cost, and the overall weight of the module can be reduced to meet the market demand. . In order to achieve the above object, the present invention is achieved by the following technical means, The invention includes: a frame, a plastic frame structure; a light source disposed on an inner side of the frame; a reflection sheet disposed on a lower side of the light source inside the frame; and a light guide plate disposed in the frame The side is positioned at the same horizontal position on the upper side of the reflective sheet as the light source, wherein the thickness of the reflective sheet and the light guide plate is not greater than the thickness of the frame, and the reflective sheet is an optical reflection sheet made of a foamed plasticized material. The thickness thereof is greater than 0.5 mm, and the periphery of the reflective sheet is directly bonded to the frame. The aforementioned light source may be an LED light source or a CCFL light source. With the above structure, the reflective sheet of the backlight module of the present invention can replace the structural strength of the conventional back sheet and save the use of the back sheet, so that the integral member of the backlight module can be reduced, thereby reducing the component cost, and Reduce the overall weight of the backlight module to meet market demand.
本發明背光模組主要係包含：一框體，係為一框型結構，具有一垂直部分及一水平部分，且在該垂直部分具有一凹部(或凸部)；一光源，係設置於該框體內側；一反射片，係設置於該光源下側，具有一垂直部分與一水平部分，且在該垂直部分具有一凸部(或凹部)，並且該凸部與該凹部相互結合來固定該反射片。上述凹部可以為嵌合孔或嵌合槽，上述凸部則為對應該凹部之嵌合塊或該反射片的任一邊緣。上述光源可以為直下式光源或側光式光源。為了更加了解本發明之實施型態，以下便附以圖式，並針對各實施例之實施型態來進行說明。請參看第一圖所示，本發明背光模組第一實施例係一側光式背光模組，其包括有：框體(10)，係一塑化框型結構，其內側設置有複數個用於固定的嵌合塊(11)；光源(12)，係設置在該框體(10)的內側之LED發光光源；反 射片(13)，係設置在該框體(10)內側之光源(12)下側，其周邊形成有可包覆該光源(12)之勾片(130)，該勾片(130)上形成有對應該框體(10)之嵌合塊(11)的嵌合孔(131)；導光板(14)，係設置該框體(10)內側並位在該反射片(13)上側與光源(12)同一水平位置；至少一擴散片(15)，係設置該框體(10)內側並位在該導光板(14)上側位置；顯示面板(16)，係設置該框體(10)內側並位在該擴散片(15)上側位置；座盤(17)，係設置在該框體(10)外側以將所有元件加以整合為一體，其中該反射片(13)與導光板(14)疊合後之厚度不大於該框體垂直(10)厚度，且該反射片(13)係由發泡成型之塑化材質製的光學反射片，其厚度大於0.5mm。由於本發明係將反射片(13)以發泡成型為厚度大於0.5mm之板體，因此結構強度較以往的反射片為佳，且具有耐高溫及表面不易受損的特性，故能取代習知使用金屬製背板的結構，不僅降低了構件的成本，亦可降低背光模組的整體重量。上述框體(10)及反射片(13)雖是以框體(10)之嵌合塊(11)與反射片(13)之嵌合孔(131)進行結合，但上述嵌合塊及嵌合孔之位置亦可以對調，即在框體上形成嵌合孔並在反射片上形成嵌合塊之方式進行兩者之結合。另外，亦可以在框體(10)上形成嵌合槽，而將平板狀之反射片(13)週邊直接插置入該框體之嵌合槽方式進行兩者的結合。其中該反射片(13)具有圓球狀的發泡粒子(132)，該發泡粒子(132)剖面所成的圓離心率約為0~0.5。請參看第四圖所示，其中(A)為本發明之反射片的粒子剖視示意圖，(B)為習知反射片之粒子剖視示意圖，本發明中的 反射片(13)是經過發泡成型製作而來，同樣是以PET為基材，並加入發泡催化劑後，置入高溫下使其反應產生發泡粒子，再上一層保護膜即完成。此發泡成型製程算是一門很成熟的技術，與習知的發泡成型製程上的差異在於發泡催化劑的選用，加上與傳統發泡成型上的製作流程差異，故可最終達到所形成的發泡粒子的差異。傳統上的反射片(32)係以PET為基材披覆一層二氧化鋁之後，再鍍上一層抗氧化膜而成；反之，本發明中之反射片(13)是以PET為基材，加入發泡化合物之後將其置入高溫爐中，之後再上一層保護膜而得，故發泡成型的粒子(132)會較為大顆而呈大圓狀，但一般習知的反射片(32)則只能達到扁平狀態的發泡粒子(321)(例如類似橢圓)。本發明中之反射片(13)的粒子較為飽滿、有彈性，而傳統發泡成型反射片(32)的粒子較為扁平、細長，因此，在外力施加下，本發明的反射片(13)較有剛性及彈性，能有較習知為佳的載重力。再請參看第二圖所示，本發明背光模組第二實施例係為一直下式背光模組，其包括有：框體(20)，係一塑化框型結構，其外側設置有複數個嵌合塊(21)；複數個光源(22)，係設置在該框體(20)的內側之發光源；反射片(23)，係設置在該框體(20)內側之光源(22)下側，其周邊形成有可包覆該框體(20)之勾片(24)，該勾片(24)上形成有對應該框體(20)之嵌合塊(21)的嵌合孔(25)；至少一擴散片(26)，係設置該框體(20)上並位在該光源(22)上側位置；顯示面板(27)，係設置該框體(20)上並位在該擴散片(26)上側位置，其中該反射片(23)同樣係由發泡成型之塑化 材質製的光學反射片，其厚度大於0.5mm。其中該反射片(23)具有圓球狀的發泡粒子，該發泡粒子剖面所成的圓離心率約為0~0.5。藉由上述結構，本發明應用於直下式背光模組亦可以省去背板的使用，讓背光模組整體的零件減少，並可達到組裝容易、重量降低等功效，故可以符合現有電子元件薄型化、輕量化的未來趨勢而增加產品的市場競爭性。 The backlight module of the present invention mainly comprises: a frame body, which is a frame type structure, has a vertical portion and a horizontal portion, and has a concave portion (or convex portion) in the vertical portion; a light source is disposed on the a reflective sheet disposed on a lower side of the light source, having a vertical portion and a horizontal portion, and having a convex portion (or a concave portion) in the vertical portion, and the convex portion and the concave portion are coupled to each other for fixing The reflection sheet. The concave portion may be a fitting hole or a fitting groove, and the convex portion may be a fitting block corresponding to the concave portion or any edge of the reflection sheet. The light source may be a direct light source or a side light source. In order to better understand the embodiments of the present invention, the following description is attached to the embodiments of the embodiments. As shown in the first figure, the first embodiment of the backlight module of the present invention is a side light type backlight module, which comprises: a frame body (10), which is a plastic frame type structure, and a plurality of inner sides are arranged a fixing block (11) for fixing; a light source (12), an LED illuminating light source disposed inside the frame (10); The film (13) is disposed on a lower side of the light source (12) inside the frame body (10), and a hook piece (130) covering the light source (12) is formed on the periphery thereof, and the hook piece (130) is mounted on the hook piece (130). A fitting hole (131) corresponding to the fitting block (11) of the frame body (10) is formed; the light guide plate (14) is disposed inside the frame body (10) and positioned on the upper side of the reflection sheet (13) The light source (12) is at the same horizontal position; at least one diffusion sheet (15) is disposed inside the frame (10) and positioned at an upper side of the light guide plate (14); and the display panel (16) is provided with the frame (10) The inner side is positioned at the upper side of the diffusion sheet (15); the seat plate (17) is disposed outside the frame (10) to integrate all the components, wherein the reflection sheet (13) and the light guide plate ( 14) The thickness after lamination is not more than the vertical (10) thickness of the frame, and the reflection sheet (13) is an optical reflection sheet made of a foamed plasticized material having a thickness of more than 0.5 mm. Since the present invention is formed by foaming a reflecting sheet (13) into a plate having a thickness of more than 0.5 mm, the structural strength is better than that of the conventional reflecting sheet, and has the characteristics of high temperature resistance and surface damage, so that it can replace the habit. It is known that the structure of the metal back plate not only reduces the cost of the component, but also reduces the overall weight of the backlight module. The frame body (10) and the reflection sheet (13) are joined by the fitting block (11) of the frame body (10) and the fitting hole (131) of the reflection sheet (13), but the above-mentioned fitting block and the insertion frame are embedded. The position of the hole can also be reversed, that is, a fitting hole is formed in the frame body and a fitting block is formed on the reflection sheet to combine the two. Further, a fitting groove may be formed in the casing (10), and the periphery of the flat reflecting sheet (13) may be directly inserted into the fitting groove of the casing to join the two. The reflection sheet (13) has spherical spherical foamed particles (132), and the circular eccentricity of the foamed particles (132) has a circular eccentricity of about 0 to 0.5. Please refer to the fourth figure, wherein (A) is a schematic cross-sectional view of a particle of the reflective sheet of the present invention, and (B) is a schematic cross-sectional view of a conventional reflective sheet, which is in the present invention. The reflection sheet (13) is produced by foam molding, and is also formed by using PET as a base material, adding a foaming catalyst, and then reacting it at a high temperature to produce foamed particles, and then applying a protective film. This foam molding process is a very mature technology, and the difference from the conventional foam molding process lies in the selection of the foaming catalyst, and the difference in the production process from the conventional foam molding, so that the final formation can be achieved. The difference in foamed particles. The conventional reflective sheet (32) is formed by coating a layer of alumina with PET as a substrate, and then plating an anti-oxidation film; otherwise, the reflective sheet (13) of the present invention is based on PET. After the foaming compound is added, it is placed in a high-temperature furnace, and then a protective film is applied thereto, so that the foamed particles (132) are relatively large and have a large round shape, but a conventional reflecting sheet (32) is generally used. Only the expanded foamed particles (321) (for example, an ellipse) can be obtained. The particles of the reflective sheet (13) of the present invention are relatively full and elastic, and the particles of the conventional foamed molded reflective sheet (32) are relatively flat and elongated, and therefore, the reflective sheet (13) of the present invention is applied under external force. It has rigidity and elasticity, and it has better load-carrying gravity. Referring to the second figure, the second embodiment of the backlight module of the present invention is a direct-type backlight module, which comprises: a frame body (20), which is a plastic frame type structure, and a plurality of outer sides are arranged a chimeric block (21); a plurality of light sources (22) being light sources disposed inside the frame (20); and a reflection sheet (23) being a light source disposed inside the frame (20) (22) The lower side is formed with a hook piece (24) covering the frame body (20), and the hook piece (24) is formed with a fitting piece (21) corresponding to the frame body (20). a hole (25); at least one diffusion sheet (26) is disposed on the frame body (20) and positioned on the upper side of the light source (22); the display panel (27) is disposed on the frame body (20) In the upper side position of the diffusion sheet (26), wherein the reflection sheet (23) is also plasticized by foam molding The optical reflection sheet made of material has a thickness of more than 0.5 mm. The reflection sheet (23) has spherical spherical foamed particles, and the circular eccentricity of the foamed particles has a circular eccentricity of about 0 to 0.5. With the above structure, the present invention can be applied to the direct type backlight module, the use of the back plate can be omitted, the overall components of the backlight module can be reduced, and the assembly can be easily performed, and the weight can be reduced, so that the existing electronic component can be thinned. The future trend of lightening and lightening increases the market competitiveness of products.
(10)‧‧‧框體 (10) ‧‧‧Frame
(11)‧‧‧嵌合塊 (11)‧‧‧Chimeric blocks
(12)‧‧‧光源 (12) ‧‧‧Light source
(13)‧‧‧反射片 (13)‧‧‧reflecting film
(130)‧‧‧勾片 (130)‧‧‧Hooks
(131)‧‧‧嵌合孔 (131)‧‧‧ fitting holes
(132)‧‧‧粒子 (132) ‧‧‧ particles
(14)‧‧‧導光板 (14)‧‧‧Light guide plate
(15)‧‧‧擴散片 (15)‧‧‧Diffuse film
(16)‧‧‧顯示面板 (16)‧‧‧Display panel
(17)‧‧‧座盤 (17) ‧ ‧ ‧ seat
(20)‧‧‧框體 (20) ‧‧‧Frame
(21)‧‧‧嵌合塊 (21)‧‧‧Chimeric blocks
(22)‧‧‧光源 (22) ‧‧‧Light source
(23)‧‧‧反射片 (23)‧‧‧reflector
(24)‧‧‧勾片 (24)‧‧‧Hooks
(25)‧‧‧嵌合孔 (25)‧‧‧ fitting holes
(26)‧‧‧擴散片 (26)‧‧‧Diffuse film
(27)‧‧‧顯示面板 (27)‧‧‧Display panel
(30)‧‧‧框體 (30) ‧‧‧Frame
(31)‧‧‧光源 (31) ‧‧‧Light source
(32)‧‧‧反射片 (32)‧‧‧Reflecting film
(321)‧‧‧粒子 (321) ‧‧‧ particles
(33)‧‧‧導光板 (33)‧‧‧Light guides
(34)‧‧‧擴散片 (34)‧‧‧Diffuse film
(35)‧‧‧背板 (35)‧‧‧ Backplane
(36)‧‧‧座盤 (36) ‧ ‧ ‧ seat
第一圖係本發明第一實施例之結構剖視圖。第二圖係本發明第二實施例之結構剖視圖。第三圖係習知側光式背光模組之結構剖視圖。第四圖係本發明之反射片與習知反射片之材質粒子比較圖；其中(A)為本發明之反射片的粒子剖視示意圖，(B)為習知反射片之粒子剖視示意圖。 The first drawing is a cross-sectional view of the structure of the first embodiment of the present invention. The second drawing is a cross-sectional view showing the structure of a second embodiment of the present invention. The third figure is a structural cross-sectional view of a conventional edge-lit backlight module. The fourth figure is a comparison of the material particles of the reflection sheet of the present invention and the conventional reflection sheet; (A) is a schematic cross-sectional view of the particle of the reflection sheet of the present invention, and (B) is a schematic cross-sectional view of the particle of the conventional reflection sheet.
(10)‧‧‧框體 (10) ‧‧‧Frame
(11)‧‧‧嵌合塊 (11)‧‧‧Chimeric blocks
(12)‧‧‧光源 (12) ‧‧‧Light source
(13)‧‧‧反射片 (13)‧‧‧reflecting film
(130)‧‧‧勾片 (130)‧‧‧Hooks
(131)‧‧‧嵌合孔 (131)‧‧‧ fitting holes
(14)‧‧‧導光板 (14)‧‧‧Light guide plate
(15)‧‧‧擴散片 (15)‧‧‧Diffuse film
(16)‧‧‧顯示面板 (16)‧‧‧Display panel
(17)‧‧‧座盤 (17) ‧ ‧ ‧ seat
Claims (17)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97136611A TWI401504B (en) | 2008-09-24 | 2008-09-24 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97136611A TWI401504B (en) | 2008-09-24 | 2008-09-24 | Backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201013266A TW201013266A (en) | 2010-04-01 |
| TWI401504B true TWI401504B (en) | 2013-07-11 |
Family
ID=44829273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97136611A TWI401504B (en) | 2008-09-24 | 2008-09-24 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI401504B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI402564B (en) * | 2010-06-08 | 2013-07-21 | Amtran Technology Co Ltd | Flat panel display and method for assembling the flat panel display |
| TWI459091B (en) * | 2011-08-16 | 2014-11-01 | Au Optronics Corp | Backlight module and display device using the same |
| CN108873424B (en) * | 2018-05-25 | 2020-09-11 | 北京京东方茶谷电子有限公司 | Backlight source structure and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040141102A1 (en) * | 2003-01-08 | 2004-07-22 | Mei-Hui Lin | Liquid crystal display module and fastening structure thereof |
| JP2005121929A (en) * | 2003-10-17 | 2005-05-12 | Sony Corp | Liquid crystal display device |
| TW200815795A (en) * | 2006-09-22 | 2008-04-01 | Chi Lin Technology Co Ltd | Display device having a reflection plate and manufacturing method thereof |
-
2008
- 2008-09-24 TW TW97136611A patent/TWI401504B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040141102A1 (en) * | 2003-01-08 | 2004-07-22 | Mei-Hui Lin | Liquid crystal display module and fastening structure thereof |
| JP2005121929A (en) * | 2003-10-17 | 2005-05-12 | Sony Corp | Liquid crystal display device |
| TW200815795A (en) * | 2006-09-22 | 2008-04-01 | Chi Lin Technology Co Ltd | Display device having a reflection plate and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201013266A (en) | 2010-04-01 |
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