TWM249042U

TWM249042U - Light-guiding structure

Info

Publication number: TWM249042U
Application number: TW92222486U
Authority: TW
Inventors: Heng-Sheng Guo
Original assignee: San Ho Entpr Co Ltd
Priority date: 2003-12-23
Filing date: 2003-12-23
Publication date: 2004-11-01

Description

M249042 四、創作說明（l) 【新型所屬之技術領域】本創作係關於一種導光結構，特別是一種應用於直下式背光模組之導光結構。【先前技術】一般而言，直下式背光模組係為大型發光顯示器之背光源，必須滿足輝度高、均度高及寬廣視角等；請參考第一圖所示，係為習知直下式背光模組1 ，該習知直下式背光模組1係包括基座1 〇、設於該基座1内之反射元件1 1、抵設於該反射元件1 1之發光元件1 2、及依序設於該反射元件1 1上方之導光板1 3、擴散板1 4及液晶模組1 5，其中，該基座1 〇係呈矩形且具有弧狀之内底面 ’該反射元件1 1係貼合該内底面，該發光元件1 2係對應設於該内底面之中心線且設於該反射元件1 1之上，該基座1 0之内底面之左右兩側係向上接合於該導光板1 3 之左右兩側邊，該擴散板1 4係設於該導光板1 3之上，最後係將該液晶模組1 5組合於該擴散板1 4之上，則該習知直下式背光模組1得以組裝完成。该習知直下式背光模組1因應該高輝度之考量，該發光元件1 2 —般係為冷陰極管（CCFL，cold Cathode Fluorescent Lamp );該習知直下式背光模組1之該發光元件1 2發射之光線，部分係經由該反射元件1 1反射後往該導光板1 3方向射出，而另一部份則直接往該導光板 1 3方向射出，然而該發光元件1 2正上方所發射之光線M249042 4. Creation Instructions (l) [Technical Field to which the New Type belongs] This creation is about a light guide structure, especially a light guide structure applied to a direct type backlight module. [Previous technology] Generally speaking, direct-type backlight modules are backlight sources for large-scale light-emitting displays, which must meet high brightness, high uniformity, and wide viewing angles; please refer to the first figure, which is a conventional direct-type backlight Module 1, the conventional direct type backlight module 1 includes a base 1 0, a reflective element 1 1 disposed in the base 1, a light emitting element 1 2 abutting against the reflective element 1 2, and sequentially The light guide plate 1 3, the diffuser plate 14 and the liquid crystal module 15 are disposed above the reflective element 11. Among them, the base 10 is rectangular and has an arc-shaped inner bottom surface. The reflective element 1 1 is pasted. Combined with the inner bottom surface, the light-emitting element 12 is correspondingly disposed on the center line of the inner bottom surface and disposed on the reflective element 1 1. The left and right sides of the inner bottom surface of the base 10 are upwardly bonded to the light guide plate. On the left and right sides of 13, the diffuser plate 14 is disposed on the light guide plate 13 and finally the liquid crystal module 15 is combined on the diffuser plate 14. The conventional direct-type backlight Module 1 is assembled. The conventional direct-type backlight module 1 is based on the consideration of high luminance. The light-emitting element 12 is generally a cold cathode tube (CCFL, cold cathode fluorescent lamp). The light-emitting element of the conventional direct-type backlight module 1 Some of the light emitted by 12 is reflected by the reflective element 11 and exits in the direction of the light guide plate 13 while the other part is emitted directly in the direction of the light guide plate 13. However, the light emitting element 12 is directly above Emitted light

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四、創作說明（2) ，其傳遞距離較短且其入射角度較對應於該發光Μ ! 2之正上方之位置3 部區f而影響該習知直下式背光模組以；度之局之運：疋接！作人有感上述缺失，乃潛心研究並：合學理。，如出一種設計合理且有效改善上述缺失之本創作 L祈尘内本創發光元件為了應用於包面之直下間之光均發光元件部分光線件之正上平面化光容】作之主發射之達成上括至少式背光勻化模正上方經由該方，俾線。要目的，在於提光線’提高直下述目的，本創作一發光元件及鄰模組；該導光結組、及凹設於該之至少一凹槽；凹槽分散，避免使提高直下式背供一種導光結構，可分散式背光模組之均度。係提供一種導光結構，係接於該發光元件下之反射構係包括設於該發光元件光均勻化模組上且設於該藉此，該發光元件發射之光線局部集中於該發光元光模組之均度，以提供該 ^ 為了使貴審查委員能更進一步瞭解本創作特徵及技術内各’清參閱以下有關本創作之詳細說明與附圖，然而所附圖式僅提供參考與說明用，並非用來對本創作加以限制0 【實施方式】Fourth, the creation description (2), its transmission distance is short and its incident angle is relatively corresponding to the position 3 above the light emitting M! 2 and affects the conventional direct-type backlight module; Luck: pick up! As a person, I feel the above-mentioned shortcomings. For example, a reasonable design and effective improvement of the above-mentioned missing original creation. The original light emitting element in the dust is used to cover the upper and lower surfaces of the light uniform light emitting element and the light plane of the light emitting element is directly planarized. This is achieved by including at least the backlight homogenizing mold directly above this line. The main purpose is to raise the light, and to improve the following purposes, this article creates a light-emitting element and adjacent modules; the light guide knot group and at least one groove recessed in the groove; the grooves are scattered to avoid improving the direct type back supply A light guide structure, the uniformity of a dispersive backlight module. A light guide structure is provided. A reflection structure connected under the light-emitting element includes a light-homogenizing module provided on the light-emitting element and provided thereon. The light emitted by the light-emitting element is locally concentrated on the light-emitting element light. The average degree of the module to provide the ^ In order to allow your reviewers to better understand the characteristics and techniques of this creation, please refer to the following detailed description and drawings of this creation, but the drawings are provided for reference and explanation only. Use, not to limit this creation 0 [implementation]

M249042 四、創作說明（3) 請參考第二圖所示，本創作係提供一種導光結構3 ，係應用於直下式背光模組2，該直下式背光模組係包括至少一發光元件2 1及鄰接於該發光元件2 1 了方之反射面2 〇 ’ 5亥導光結構3係包括·设於該發光元件2 1間上之光均勻化模組3 0、及凹設於該光均勻化模組3 〇上且設於該發光元件2 1正上方之至少一凹槽3 1 ;藉此，該凹槽3 1係具有漸變曲率所構成之圓滑弧面，該發光元件 2 1發射之部分光線經由该凹槽3 ;[分散，避免光線局部，中於該發光元件2 1之正上方，俾使提高該直下式背光模組2之均度，以提供平面化光線。其中，管（CCFL，電極螢光燈 Lamp )，該度’俾使該槽3 1折射請參考模組3 1之於該光均勻之該圓滑弧折分散。如 1之上表面 sin ^ !-n2 . 係為第二介該發光元件2 1係為直管型（I Type )冷陰極 C^ld Cathode Fluorescent Lamp )、或外置官（EEFL， External Electrode Fluorescent 凹槽3 1之長度係對應於該發光元件2 i之長發光元件2 1正上方發射之光線得以經由該分散之。第三及第四圖，該凹槽3 1係設於該光均勻化 ίίΓΪ面之一。如第三圖，該凹槽3 1係設面i之下表面’藉由具漸變曲率所構成文艾光線入射之法線，俾使該光線能向外弟四圖，該凹槽3丄係設於該光均勻化據司乃耳折射定律（Snell，s Law)、^3. 所2，其中，n 1係為第一介質折射率，η 貝射率，Θ !係為入射角，θ 2係為折射角2， M249042 四、創作說明（4) 隨著折射率大’是以該該上表面及 1設於該上，以適達到光結構3係設於下表面面，該發光 3 1產生折其中，如擴散板，於下方’而擾，其光線裝元件之需件2 1間之面0 由该光光線能該下表表面及最佳之進一步 ’，藉元件2 射向兩該光均該直下無側光均勻化求，或導光板均勻化模向外偏折面時，其該下表面光偏折狀包括對應由該兩凹 1發射之側分散。勻化模組式背光模式背光模組3 0 分散。折射主時，係態；或於該凹槽3 1 部分光 3 0係組2係組需由可由該擴散板完進一步包括設置 ’而該凹槽3 1 至空氣變小，折射角變又因為該凹槽3 1設於因不盡相同，該凹槽3 可具有不同之圓滑弧面者’參考第五圖，該導槽3 1之另一凹槽3 1 分設該上表面及該下表線可連續經由該兩凹槽包含至少一光處理層，因該發光元件2 1設置側面光導為正面光之困成即可，並藉此減少組於該擴散板及該發光元係設於該導光板之下表M249042 4. Creation instructions (3) Please refer to the second picture. This creation provides a light guide structure 3, which is applied to the direct-type backlight module 2. The direct-type backlight module includes at least one light-emitting element 2 1 And the light-reflecting surface 2 adjacent to the light-emitting element 21 and the light-guiding structure 3 include a light-uniformizing module 30 disposed on the light-emitting element 21 and a light uniformity recessed on the light-emitting element 2 1. At least one groove 3 1 on the light-emitting element 21 and located directly above the light-emitting element 21; thereby, the groove 31 has a smooth arc surface composed of a gradual curvature, and the light-emitting element 21 emits light. Part of the light is dispersed through the groove 3; [to avoid localized light, directly above the light-emitting element 21, so as to increase the uniformity of the direct-type backlight module 2 to provide planar light. Among them, for a tube (CCFL, electrode fluorescent lamp), the degree ′ 俾 makes the groove 31 refract. Please refer to the module 31 for the smooth arc fold dispersion of the light uniformity. Such as 1 on the upper surface sin ^!-N2. The light-emitting element 21 is the second medium. The light-emitting element 21 is a straight-type (I Type) cold cathode C ^ ld Cathode Fluorescent Lamp (EEFL), or an external officer (EEFL, External Electrode Fluorescent). The length of the groove 31 corresponds to the light emitted directly above the long light-emitting element 21 of the light-emitting element 2 i through which the light can be dispersed. In the third and fourth figures, the groove 31 is provided for the light uniformity. ίίΓ 之一 One of the faces. As shown in the third figure, the groove 31 is provided on the lower surface of the face i 'with a normal line formed by the gradual curvature of the Wen Ai ray. The groove 3 丄 is set at the light homogenization according to Snell, s Law, ^ 3. So, where n 1 is the refractive index of the first medium, η emissivity, Θ! Is the angle of incidence, θ 2 is the angle of refraction 2, M249042 IV. Creative Instructions (4) As the refractive index is large, the upper surface and 1 are set on the surface so that the light structure 3 is set on the lower surface. Surface, the light-emitting 31 generates a fold, such as a diffuser plate, which interferes with the bottom, and its light-emitting components require a surface 21 The light and light can be the surface of the lower surface and the best further, by the element 2 to the two of the light should be straight down without side light uniformity, or when the light guide plate uniformization mold outwards deflected surface, the lower surface light The deflection shape includes a dispersion corresponding to the side emitted by the two recesses 1. The homogeneous module type backlight mode and the backlight module 3 0 are dispersed. When refracting the main state, the state; or in the groove 3 1 part of the light 3 0 system group 2 The system needs to be further included by the diffuser, and the groove 3 1 to the air becomes smaller, and the refraction angle becomes smaller. Because the groove 31 is set to be different, the groove 3 can have different smoothness. With reference to the fifth figure, the other groove 3 1 of the guide groove 31 is divided into the upper surface and the lower line, and the two grooves can continuously pass through the two grooves to include at least one light treatment layer, because the light emitting element 2 1 It is only necessary to set the side light guide to the front light, and thereby reduce the grouping of the diffuser plate and the light emitting element under the light guide plate.

5月ί考第六圖所示，係為本創作另一應用示意圖，該直Γ式二光模組2係具有複數個發光元件2 1來提高輝度 ’ 3導光結構3係對應於該發光元件2 1開設有複數個凹As shown in the sixth picture in May, it is another application diagram for this creation. The straight Γ-type two-light module 2 has a plurality of light-emitting elements 21 to improve the brightness. 3 The light guide structure 3 corresponds to the light emission. Element 2 1 is provided with a plurality of recesses

槽、二依據該複數個發光元件2 1間隔距離之遠近，可決疋戎複數個凹槽3 ;[設置間隔及該圓滑弧面之大小及直漸變曲率。八本創作係提供該光均勻化模組3 〇及設於該光均勻化模組3 0之該凹槽3 i所構成之導光結構3，係用該凹槽According to the distance between the plurality of light-emitting elements 21, the grooves and the two can determine the plurality of grooves 3; [Set the interval and the size of the smooth arc surface and the straight curvature. 8. This creation is to provide the light homogenization module 3 0 and the light guide structure 3 formed by the groove 3 i provided in the light homogenization module 30. The groove is used.

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四、創作說明（5) 3 1可朝向忒光均勻化模組3 〇之兩相對側偏折以分散光線之特徵，提高該直下式背光模組2之均度；是以，本創作係不僅止運用於液晶顯示器及液晶電視之背光源，尚可運用於具有掃描功能之掃描器、印表機、傳真機、影印機、及多功能事務機（MFP，Multi-Function Peripherals) 等；或進一步應用於廣告用或裝飾用燈箱之光源。綜上所述’本創作確實可達到預期之目的與功效，惟上述揭露技術手段僅係本創作之一較佳實施例，任何依本創作之精神、特徵所為之修飾與變化，皆應包含於如後产附之申請專利範圍内。Fourth, the creation instructions (5) 3 1 can be deflected towards the opposite sides of the light homogenization module 3 〇 to disperse the light, to improve the uniformity of the direct-type backlight module 2; therefore, this creative department not only Backlight sources for LCD monitors and LCD TVs can be used for scanners, printers, fax machines, photocopiers, and multi-function peripherals (MFPs) with scanning functions; or further Light source for advertising or decorative light boxes. In summary, 'this creation can indeed achieve the intended purpose and effect, but the above disclosed technical means is only a preferred embodiment of this creation. Any modification and change based on the spirit and characteristics of this creation should be included in Such as within the scope of the patent application attached.

第9頁 M249042 第圖係為習知直下式背光模組之剖視示圖式簡單說明】意圖；意圖 ^ Λ , Α θ兀》镇組之剖祝卟恐 =二圖係為本創作直下式背光模組之剖視示 =二圖係為本創作導光結構第一實施例之放大示意圖篦四圖係為本創作導光結構第二實施例之放大示意圖，·及 i f圖係為本創作導光結構第三實施例之放大示意圖弟/、圖係為本創作> JK _ 々个到TF之另一應用示意圖。 j元件符號說明】習知直下式背光模組基座發光元件擴散板本創作導光結構3 光均勻化模組 f下式背光模組务光元件 0 4 反射元件導光板液晶模組 3 0凹槽 2 反射面 2 0Page 9 M249042 The picture is a simple illustration of a sectional view of a conventional direct-lit backlight module] Intent; Intent ^ Λ, Α θ Wu ", the section of the town group = the direct-type of the two-picture series for this creation Sectional view of the backlight module = two pictures are enlarged schematic diagrams of the first embodiment of the light guide structure of the creative work; four pictures are enlarged schematic diagrams of the second embodiment of the light guide structure of the creative work; The enlarged schematic diagram of the third embodiment of the light guide structure is a schematic diagram of this application > JK _ another application diagram to TF. Description of the symbol of j element] Conventional direct-type backlight module base light-emitting element diffuser plate Original light guide structure 3 Light homogenization module f-type backlight module light element 0 4 Reflective element light guide plate LCD module 3 0 concave Slot 2 reflective surface 2 0

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Claims

M249042 五、申請專利範圍 ' — -- " ' ------ 一· 式背i ^ Γ種導光結構，係應用於直下式背光模組，該直下 U果組係包括至少一發光元件及鄰接於該發光元件下方之反射面，該導光結構係包括：光均勻化模組，係設於該發光元件之上，且包含至少一光處理層；及至J 一凹槽，係凹設於該層光均勻化模組且設於該發光元件之正上方；、藉此’該發光元件發射之部分光線經由該凹槽分散 ’避免光線局部集中於該發光元件之正上方，以提供平面化光線。 ^ 2、如申請專利範圍第1項所述之導光結構，其中該凹槽係具有漸變曲率所構成之圓滑弧面。 ~ 3 \如申請專利範圍第2項所述之導光結構，其中該發光兀件係為外置電極螢光燈管（EEFL，External Electrode Pluoirescent Lamp)，該凹槽之長度係對應於該冷陰極管之長度。 4、如申請專利範圍第2項所述之導光結構，其中該發光元件係為直管型（I Type)冷陰極管（CCFL，Cold Cathode Fluorescent Lamp)，該凹槽之長度係對應於該冷陰極管之長度。 5、如申請專利範圍第1項所述之導光結構，其中該凹槽係設於該光均勻化模組之上下兩表面之一。 6、如申請專利範圍第5項所述之導光結構，其中該凹槽係設於上表面時具有不同於設於下表面時之圓滑弧面M249042 5. Scope of patent application '—-"' ------ One type of light guide structure i ^ Γ is used in direct type backlight module, the direct type U fruit system includes at least one light The element and the reflective surface adjacent to the light-emitting element, the light-guiding structure includes: a light homogenizing module, which is disposed on the light-emitting element and includes at least one light processing layer; and a groove to J, which is concave It is located on the layer of light homogenization module and directly above the light-emitting element; by this, 'part of the light emitted by the light-emitting element is dispersed through the groove' to avoid the local concentration of the light directly above the light-emitting element to provide Flatten the light. ^ 2. The light-guiding structure according to item 1 of the scope of the patent application, wherein the groove has a smooth arc surface formed by a gradual curvature. ~ 3 \ The light guide structure as described in item 2 of the scope of patent application, wherein the light emitting element is an external electrode fluorescent lamp (EEFL, External Electrode Pluoirescent Lamp), and the length of the groove corresponds to the cold The length of the cathode tube. 4. The light-guiding structure as described in item 2 of the scope of the patent application, wherein the light-emitting element is a Type I cold cathode tube (CCFL, Cold Cathode Fluorescent Lamp), and the length of the groove corresponds to the The length of the cold cathode tube. 5. The light-guiding structure according to item 1 of the scope of patent application, wherein the groove is provided on one of the upper and lower surfaces of the light homogenizing module. 6. The light-guiding structure as described in item 5 of the scope of the patent application, wherein the groove is provided on the upper surface with a smooth arc surface different from that on the lower surface.

M249042 五、申請專利範圍〇 7、如申請專利範圍第5項所述之導光結構，其中該凹槽係設於上表面，該導光結構係進一步包括對應於該凹槽之另一凹槽設於下表面，藉此，該發光元件發射之部分光線玎連續經由該兩凹槽產生折射分散。 8、如申請專利範圍第1項所述之導光結構，其中該光均勻化模組係包括擴散板。 9、如申請專利範圍第8項所述之導光結構，其中該光岣句化模組係進一步包括導光板，設置於該擴散板及該發光元件之間。 1 0、如申請專利範圍第9項所述之導光結構，其中 "亥凹槽係設於該導光板之下表面。M249042 V. Patent application scope 0. The light guide structure described in item 5 of the patent application scope, wherein the groove is provided on the upper surface, and the light guide structure further includes another groove corresponding to the groove. It is set on the lower surface, whereby part of the light emitted by the light emitting element is continuously refracted and dispersed through the two grooves. 8. The light-guiding structure according to item 1 of the scope of patent application, wherein the light homogenizing module includes a diffusion plate. 9. The light guide structure according to item 8 of the scope of the patent application, wherein the light haiku module further includes a light guide plate disposed between the diffuser plate and the light emitting element. 10. The light guide structure as described in item 9 of the scope of the patent application, wherein the " Hai groove is provided on the lower surface of the light guide plate.

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