M288385 八、新型說明： 【新型所屬之技術領域】 ，本創作係有關於—種應用於液晶顯 赴’係具有高均自性亮度的背光模組。 【先前技術】M288385 VIII. New Description: [New technical field] This book is about a kind of backlight module with high uniformity brightness applied to liquid crystal display. [Prior Art]
、輕液晶顯示器具有低耗電量 曰恭視至今被廣泛使用在各種領域，例如液 曰曰：視、^己型電腦、手機等，1晶顯示器包含液晶面板 :口=模組：其中背光模組可分為直下式模組和邊光式模 、卫…下式挺組的光源係配置在液晶面板的正下方，而邊 光式模組的光源係在導光板的側邊。 、由於液晶顯示器有小型化趨勢，邊光式模組已被更廣 泛地使用’在邊光式模組中，導光板從侧面接受光線，在 出光面處均勻地放射光線，提供照明給液晶面板。Light liquid crystal display has low power consumption. Christine has been widely used in various fields, such as liquid helium: visual, computer, mobile phone, etc., 1-crystal display includes LCD panel: port = module: backlight module The group can be divided into a direct type module and an edge light type mode, and the light source of the lower type is disposed directly under the liquid crystal panel, and the light source of the edge light type module is on the side of the light guide plate. Because of the miniaturization trend of liquid crystal displays, edge-light modules have been more widely used. In the edge-light module, the light guide plate receives light from the side, uniformly radiates light at the light-emitting surface, and provides illumination to the liquid crystal panel. .
示器上的背光模 在邊光式模組中，發光源主要係為冷陰極管或發 極體，發光源放出的光線經由入光面穿入，入射光在導光 板内來回彈射’最後經由出光面傳遞出去，網點分佈在導 光板之底面形成具有散射光線的功能，以增加照明的均勻 性0 如第四、五圖所示係習用的背光模組（5)，該背光模組 (5)包含一組複數個發光二極體（51)及導光板（52)，該導光 板（52)相鄰於發光二極體（51)之邊緣設有入光面（53)，導 光板（52)之頂面設有出光面（54)垂直於入光面（53)，於導 光板（52)之底面（55)設有網點（56)分佈，該網點（56)分佈 M288385 可刀成網點您度漸進分係F ^ ^ ,刀佈區（57)和網點密度集中分佈區 (58)，、..罔點始、度漸進分佈區（ ^ W )之形成，在於發光二極體 (51)的光線射入網點密声相望 , 在度相專之導光板（52)時，由出光面 (54)投射出的亮度分佈合伤| 、μ % 士 ^ f 9係罪近光源處的亮度較高，遠離 光源處的壳度較低，為了逵ξ丨古 J建引回均勻性的亮度分佈，密度 相荨之網點分佈被設計成漸谁々 τ风新進式網點分佈，其分佈係靠近The backlight module on the display is in the edge light module, and the light source is mainly a cold cathode tube or a hair body. The light emitted by the light source penetrates through the light incident surface, and the incident light is ejected back and forth in the light guide plate. The light-emitting surface is transmitted out, and the dots are distributed on the bottom surface of the light guide plate to form a function of scattering light to increase the uniformity of illumination. 0 As shown in the fourth and fifth figures, the backlight module (5) is used, and the backlight module (5) a plurality of light emitting diodes (51) and a light guide plate (52), the light guide plate (52) is adjacent to the edge of the light emitting diode (51), and is provided with a light incident surface (53), and the light guide plate ( 52) The top surface of the light guide surface (54) is perpendicular to the light incident surface (53), and the bottom surface (55) of the light guide plate (52) is provided with a dot (56) distribution, and the mesh point (56) is distributed by M288385. The dot is gradually progressive F ^ ^, the knife cloth area (57) and the dot density concentration distribution area (58), the beginning of the 罔 point, and the progressive distribution area ( ^ W ) are formed by the light-emitting diode ( 51) The light is incident on the mesh point, and the brightness distribution projected by the light exit surface (54) is combined when the light guide plate (52) is used. % %士^ f 9 is a high-light source near the light source, and the shell is far from the light source. In order to reduce the uniformity of the brightness distribution, the density distribution is designed to be gradually Who is the new type of dot distribution, and its distribution is close
先源處網點密度低’離光源越遠網點密度就增加，在兩個 發光二極體(51)之間的網點密度若採用漸進分佈區(5”， 則會產生暗帶出現，因此在兮F +七猫丄a U此在4 £域增加網點密度以增加亮 度’因此成為網點密度集中分佈區（58)，此區域呈現三角 形狀，其中一邊係靠近入光面（53)。 參閱第六、七圖，比較發光二極體（51)之背光模組⑸ 的亮度分佈（位在量測亮度分佈的虛線位置（50))，與以冷 陰極管（61)為光源的背純組（6)之亮度分佈（為在量測^ 度分佈的虛線位置（60))，由發光二極體所投射出之光線（ 5,10)為交錯狀，而冷陰極管（61)所投射出之光線（61〇)為 平直狀，並由第八圖之比較可看出發光二極體（51)之背光 权組（5)的亮度分佈曲線（511)係明暗相間的分佈，不同於 冷陰極管（61)之背光模組（6)的亮度分佈曲線（611)幾乎是 平均的分佈，請參閱第六圖，由於發光二極體（5 1 )是點光 源性質，其發出的光線進入導光板（52)時，產生有範圍性 的光線傳遞，且發光二極體（51)的排列方式是有間隙的， 產生党暗相間的亮度分佈；請參閱第四圖所示，冷陰極管 (6)所發出的光線（β 1 〇)，在導光板（5 2 )傳遞時呈現一維的 M288385 —义 不同於發光二極體（51)的亮度變化，因此網點 4度之漸進分佈區（57)適用於冷陰極管（61)之背光模組 ⑹，卻=適用在發光二極體（51)之背光模組⑸上。 有銓於此，有需要提供一種特別的網點分佈，針對背 光模組&供南均勻的亮度分佈。 【新型内容】 本創作之主要目的在於提供一種高均勻性亮度的背光 籲模組，以供應液晶顯示器的照明。 “ 一 $達到上述目的，本創作提供一種背光模組，在液晶 顯:盗面板後方提供照明的照明裝置，該背光模組包含一 組複數個發光二極體及一導光板，該導光板設有一入光面 --位於發光二極體旁邊，以供接收光源射出的光線，於導光 ^頂部設有出光面垂直於人光面，以供將導光板内的光 =傳出，經過光學膜片到達液晶面板裡，於導光板之底面 [佈有波浪狀網點，該波浪狀網點分佈係根據發光二極體 光線射入導光板内的亮度分佈而設計。 =據本創作之—特徵，其中該波浪狀的網點分佈係根 .據^光二極體的擺設位置而形成。 、 據本別作之波浪狀網點分佈，由於發光二極體所投 射出的光線經由波浪狀的網點分佈，產生較高的 ： 明。 ^ 乂又 <、?、 【實施方式】 ~與私為了讓本創作之上述目的、特徵和優點能更明顯，特 牛父佳實施例，並配合所附圖式，作詳細說明如下： 7 M288385 請參閱第一、二圖，本創作第一實施例之背光模組（1) ，该为光模組（1)係設有一組複數個發光二極體（led)(2)& 一導光板（3); 該導光板（3)設有一入光面（31)鄰接在發光二極體 旁邊，於導光板（3)之頂面設有出光面（32)垂直於入光面 (31)，於導光板（3)之底面（33)設有網點（4);該導光板（3) 的形狀以矩形的板塊為主，亦可設為楔形的板塊，在厚度 上的範圍約0.7公厘到3公厘之間；導光板（3)的材質為壓克 力（PMMA)，此材質具有極佳的光學穿透、熱抗阻、塑變行 為，適合作為導光板（3)的材料。 如弟一圖所示 於導光板（3)底面所設的網點（4)排列 ，網點⑷分佈主要分為網點錢集中分佈區域⑷）和波浪 狀網點密度漸進分佈區域（42)兩個部分，網點⑷的排列= 式為矩形排列，即各行/列的間距（兩網點⑷圓心之距離 )相等，網點密度集中分佈區域（41)的形成乃基於發光二 極體⑵發射的光線料導光板⑶後呈現有限範圍^歸 ’且發光二極體⑵排列方式係間隔排列，因此光線在導 板⑻裡傳遞時，靠近人光面（31)附近的亮度分佈係亮暗相 間，在發光二極體⑵正前方的亮度最亮，在發光二 之間的亮度則最暗，最暗處呈現三角形狀 ） 網點(4)之密度，以楹斗古洛七仏a十 日处曰加 狀呈規1: Λ 勾度，網點密度的分佈形 狀呈現二角形，其中一邊係鄰近入光面⑶），而遠 面⑶）處的亮度分佈則係在發光二極體⑵正前方略暗 而在發先二極體⑵相間處最亮，這是因為兩個發光二 M288385 (2)的光線疊加在一备古 (如第五圖辦-Λ曰。冗又 抓用写用的網點分佈 浪狀網有亮暗相間的亮度分佈，因此採用波 ★ ”、、在度漸進分佈區域（42)則可大為改善均勻性 日，離發光二極體⑵之光源越近，波浪的 、網、The density of the dot at the source is low. The density of the dot increases as the distance from the light source increases. If the dot density between the two light-emitting diodes (51) is a progressively distributed region (5", a dark band appears, so F + seven cats a U this increases the dot density in the 4 £ domain to increase the brightness' thus becomes a concentrated distribution of dot density (58), which has a triangular shape with one side close to the light entrance (53). And seven figures, comparing the brightness distribution of the backlight module (5) of the light-emitting diode (51) (located in the dotted line position (50) of the measured brightness distribution), and the back-purified group using the cold cathode tube (61) as the light source ( 6) The brightness distribution (in the dotted line position (60) of the measurement distribution), the light (5, 10) projected by the light-emitting diode is staggered, and the cold cathode tube (61) is projected. The light (61〇) is flat, and the comparison of the eighth figure shows that the brightness distribution curve (511) of the backlight group (5) of the light-emitting diode (51) is a distribution between light and dark, which is different from cold. The brightness distribution curve (611) of the backlight module (6) of the cathode tube (61) is almost evenly distributed, see In the sixth figure, since the light-emitting diode (5 1 ) is a point light source, when the light emitted from the light guide plate (52) enters the light guide plate (52), a range of light transmission is generated, and the arrangement of the light-emitting diodes (51) is For the gap, the brightness distribution of the party dark phase is generated; see the fourth figure, the light emitted by the cold cathode tube (6) (β 1 〇), when the light guide plate (5 2 ) is transmitted, presents a one-dimensional M288385 — The difference is different from the brightness change of the light-emitting diode (51), so the 4° progressive distribution area (57) is suitable for the backlight module (6) of the cold cathode tube (61), but is applicable to the light-emitting diode (51). On the backlight module (5). In view of this, it is necessary to provide a special dot distribution for uniform brightness distribution of the backlight module & [New content] The main purpose of the creation is to provide a high uniformity brightness. The backlighting module is used to supply the illumination of the liquid crystal display. "One of the above purposes, the present invention provides a backlight module that provides illumination for illumination behind a liquid crystal display panel, the backlight module comprising a plurality of Luminous dipole And a light guide plate, the light guide plate is provided with a light-incident surface--located adjacent to the light-emitting diode for receiving light emitted by the light source, and the light-emitting surface is disposed on the top of the light guide surface perpendicular to the human light surface for the light guide plate The light inside is transmitted out through the optical film to the liquid crystal panel, and is on the bottom surface of the light guide plate [with a wavy mesh point, which is designed according to the brightness distribution of the light emitting diode light into the light guide plate. According to the creation of the feature, the undulating dot distribution is formed according to the position of the photodiode. The wavy dot distribution according to the other is due to the projection of the light-emitting diode. The light is distributed through the wavy dots, resulting in a higher: Ming. ^ 乂 and <, ?, [Embodiment] ~ and private to make the above purposes, features and advantages of this creation more obvious, special cattle father implementation For example, the following is a detailed description of the following: 7 M288385 Please refer to the first and second figures. The backlight module (1) of the first embodiment of the present invention is provided with a set of optical modules (1). Multiple LEDs (led)(2)& A light guide plate (3); the light guide plate (3) is provided with a light incident surface (31) adjacent to the light emitting diode, and a light emitting surface (32) is perpendicular to the top surface of the light guide plate (3). The smooth surface (31) is provided with a mesh point (4) on the bottom surface (33) of the light guide plate (3); the shape of the light guide plate (3) is mainly a rectangular plate, and may also be a wedge-shaped plate, in thickness. The range of the light guide plate (3) is acrylic (PMMA), this material has excellent optical penetration, thermal resistance, plastic deformation behavior, suitable as a light guide plate (3) Materials. As shown in the figure of the younger brother, the dots (4) set on the bottom surface of the light guide plate (3) are arranged. The distribution of the dot (4) is mainly divided into two parts: the concentrated distribution area of the dot money (4) and the progressive distribution area of the wavy dot density (42). The arrangement of the dots (4) is a rectangular arrangement, that is, the pitch of each row/column (the distance between the two dots (4)) is equal, and the formation of the dot density distribution region (41) is based on the light guide plate (3) emitted by the light-emitting diode (2). After the finite range is displayed, and the arrangement of the light-emitting diodes (2) is arranged at intervals, when the light is transmitted in the guide plate (8), the brightness distribution near the human light surface (31) is bright and dark, in the light-emitting diode. (2) The brightness in front is the brightest, the brightness between the two is the darkest, and the darkest is in the triangle. The density of the dots (4) is the same as that of the 古 gulu : 勾 Hook, the distribution of dot density appears in a shape of a triangle, where one side is adjacent to the light-incident surface (3), and the brightness distribution at the far side (3)) is slightly darker in front of the light-emitting diode (2). The polar body (2) is the brightest between the phases, this is For the two light-emitting two M288385 (2) light is superimposed on a masterpiece (as shown in the fifth figure - Λ曰. The redundant and easy-to-use dot-wave distribution has a bright and dark brightness distribution, so the wave is used ★ ", in the progressive distribution area (42), the uniformity day can be greatly improved, and the closer to the light source of the light-emitting diode (2), the wave, the net,
點密度係較小，而離發光二極體⑵之光源越遠，^的: 路越不明顯，網點的密度則較大，在波浪狀網點密度漸進 /刀佈區域（42)的網點密度從9%到8()%，在網點密度集中分 佈區域（41)的網點密度謂％到9〇%。上述的網點密度： 佈可使光線均勻地射出出光面（32)。 ,如第一圖所示，網點（4)的形狀通常係為半圓形、三角 形或多邊形的凸點（4〇1)和/或凹點（4〇2)，由第二圖所示， 網點（4)係為圓形、橢圓形、矩形、菱形或多邊形，而網點 (4)的製造方法係由印刷網點技術，其印刷油墨含有二氧化 鈦的白色顏料，另網點（4)的製造方法可由半導體的等向性 /非等向性蝕刻製程作出。 參閱第三圖所示，本創作之第二實施例之背光模組（1) ’該背光模組（1)係設有一組發光二極體（2 )及一導光板（3 ) ’該導光板（3)相鄰於發光二極體（2)之邊緣設有入光面 (31) ’於導光板（3)之頂面設有出光面（32)垂直於入光面 (31) ’於導光板（3)之底面（33)設置有網點（4)分佈，該背 光模組（1)之結構與製作方法係與第二圖所述之背光模組 (1)大致相同，其主要不同處係在網點（4)的排列方式為交 叉排列，其網點（4)包括網點密度集中分佈區域（43)和波浪 狀網點密度漸進分佈區域（44)。The dot density is small, and the farther away from the light source of the light-emitting diode (2), the less the road is less obvious, the density of the dot is larger, and the density of the dot at the wavy dot is progressive/the density of the blade region (42) is from From 9% to 8 ()%, the dot density in the dot density distribution area (41) is % to 9〇%. The dot density described above: The cloth allows the light to be uniformly emitted from the exit surface (32). As shown in the first figure, the shape of the dot (4) is usually a semicircular, triangular or polygonal bump (4〇1) and/or a pit (4〇2), as shown in the second figure. The dot (4) is a circle, an ellipse, a rectangle, a diamond or a polygon, and the dot (4) is manufactured by a printing dot technique, the printing ink contains a white pigment of titanium dioxide, and the manufacturing method of the other dot (4) can be The isotropic/non-isotropic etching process of the semiconductor is made. Referring to the third embodiment, the backlight module (1) of the second embodiment of the present invention is characterized in that: the backlight module (1) is provided with a group of light-emitting diodes (2) and a light guide plate (3). The light plate (3) is adjacent to the edge of the light emitting diode (2) and is provided with a light incident surface (31). The top surface of the light guide plate (3) is provided with a light exit surface (32) perpendicular to the light incident surface (31). The bottom surface (33) of the light guide plate (3) is provided with a dot (4) distribution. The structure and manufacturing method of the backlight module (1) are substantially the same as the backlight module (1) described in the second figure, and the main The different points are arranged in the intersection of the dots (4), and the dots (4) include a concentrated distribution of the dot density (43) and a progressive distribution of the wavy dot density (44).
A M288385 一發光二極體（2)所投射出的光線經由入光面（31)在導 光板(3)内傳遞，—部分的光線射入網點⑷上則擴散往上 傳至出光面（32) ’而另—部分光線則射出底面（33)，由反 射片/圖中未示）反射到導光板⑶内，為了使本創作的背 光換組⑴達到更高亮度的照明，應在出光面（32)上放置擴 政片或增免片（圖中未示）。 八A M288385 The light projected by a light-emitting diode (2) is transmitted through the light-incident surface (31) in the light guide plate (3), and part of the light is incident on the halftone point (4) and diffused to the light-emitting surface (32). 'And another part of the light is emitted from the bottom surface (33), reflected by the reflection sheet / not shown) into the light guide plate (3), in order to achieve the backlight conversion (1) of this creation to achieve higher brightness illumination, should be on the light surface ( 32) Place a magnifying film or an add-on film (not shown). Eight
雖然前述的描述及圖式已揭示本創作之較佳實施例， =須瞭解料_添、修改和取代可能制於本創作較佳 只知例’而不會脫離如所附中請專利範圍所界定的本創作 原理之精神及範圍，熟悉該技藝者將可體會本創作可能使 =很多形式、結構、佈置、比例、材料、元件和組件的 此，本創作所揭示的實施例於所有觀點，應被視 座祝月本創作’而非用以限制本創作，本創作的範圍 Μ後附申請專利範圍所界定，並涵蓋其合法 不限於先前的描述。 予初亚 【圖式簡單說明】 第一圖為本創作之背光模組側視圖。 =二圖為本創作第一實施例背光模組之仰視圖。 弟三圖為本創作第二實施例背光模組之仰視圖。 第四圖為習用背光模組之側視圖。 f五圖為習用背光模組之仰視圖。 3六圖為f用發光：極體發出光線在導光板内傳遞之示意 之示意圖 第七圖為習用4陰極管發出光線在導光板内傳遞 M288385 第八圖為背光模組與冷陰極管之背光模 行燈源方向之關係圖。 、千 【主要元件符號說明】 (2)發光二極體 (31)入光面 (3 3)底面 (402)凹點 (1)背光模組 (3) 導光板 (32)出光面Although the foregoing description and drawings have disclosed the preferred embodiments of the present invention, it is to be understood that the additions, modifications, and substitutions may be made in the present invention as a preferred example of the present invention without departing from the scope of the appended claims. The spirit and scope of the present principles, those skilled in the art will appreciate that the present invention may be made in many forms, structures, arrangements, proportions, materials, components, and components. The embodiments disclosed herein are intended to be The scope of this creation is defined by the scope of the patent application and covers its legality and is not limited to the previous description.予初亚 [Simple description of the diagram] The first picture is a side view of the backlight module of the creation. The second figure is a bottom view of the backlight module of the first embodiment of the present invention. The third figure is a bottom view of the backlight module of the second embodiment of the present invention. The fourth picture is a side view of a conventional backlight module. f Five is a bottom view of a conventional backlight module. Figure 3 shows the schematic diagram of the light emitted by the polar body in the light guide plate. The seventh picture shows the light emitted from the cathode tube of the conventional 4 in the light guide plate. The eighth picture shows the backlight of the backlight module and the cold cathode tube. The relationship between the direction of the lamp source. , thousand [Main component symbol description] (2) Light-emitting diode (31) light-in surface (3 3) bottom surface (402) pit (1) backlight module (3) light guide plate (32) light-emitting surface
(4) 網點 (41) 網點密度集中分佈區 (42) 波浪狀網點密度漸進分佈區 (4 3)網點密度集中分佈區 (44)波浪狀網點密度漸進分佈區 (401)凸點 (5)背光模組 (50)量測亮度分佈的虛線位置（51)發光二極體 (510)光線 （511)亮度分佈曲線 (52)導光板 （53)入光面 (54)出光面 （55)底面 (56)網點 （57)網點密度漸進分佈區 (58)網點密度集中分佈區 (6)背光模組 (60)量測亮度分佈的虛線位置（61)冷陰極管 (610)光線 （611)亮度分佈曲線 11(4) dot (41) dot density concentration distribution area (42) wavy dot density progressive distribution area (4 3) dot density concentration distribution area (44) wavy dot density density progressive distribution area (401) bump (5) backlight The module (50) measures the dotted line position of the brightness distribution (51) the light-emitting diode (510) light (511) brightness distribution curve (52) the light guide plate (53) light-incident surface (54) light-emitting surface (55) bottom surface ( 56) dot (57) dot density progressive distribution area (58) dot density concentration distribution area (6) backlight module (60) measurement of the brightness distribution of the dotted line position (61) cold cathode tube (610) light (611) brightness distribution Curve 11