1282021 9 ， ο kl 九、發明說明： 【發明所屬之技術領域】 r 本發明係關於一種導光板之微結構，係應用於液晶顯 ，示器之背光模組上，尤指自導光板底面内凹之弧形或扇形 凹陷，而能增加導光板輝度者。 【先前技術】 請參考第一圖，係為習知導光板丨之微結構2之示意圖 ⑩，係以蝕刻方式在光滑的導光板1之底面12上產生具有粗 糙表面的微結構2，光線50射入微結構2的表面即產生散射 的反射光線51或折射光線52。當散射光線51入射導光板工 之出光面11之入射角度小於臨界角，則射出導光板1之出 、光面11 ;若入射角度大於臨界角度，則光線51作全反射回 導光板1内並繼續傳遞。 第二圖係解釋第三（a)圖之座標，第三（a)圖係為從 _ 習知導光板1之出光面11之出光強度雷達圖。橫座標表示 水平角度（Harizontal angle, HA)，角度的移動從出光 面11之法線方向13，轉向與燈源4垂直方向14 ;縱座標表 不垂直角度（Vertical angle, VA)，角度的移動從出光 • 面11之法線方向13，轉向與燈源4平行方向15。第三（a) . 圖中’每個封閉曲線代表出光強度（intensity )值，其 定義為單位立體角之光通量，此圖有1〇條封閉曲線，代表 10個等級的出光強度。由第三（a)圖可知，從習知導光 板1出光之出光強度分佈近似藍勃遜分佈（Lambertian 5 1282021 distribution)，亦即在第三（a)圖上產生圓形的封閉 曲線，出光強度呈現餘弦函數分佈。將出光強度換算成輝 度值，即輝度在各方向上均為等值。 ^ 請參閱第三（b)圖，係習知導光板1之出光面11之出光 • 強度立體圖。此出光強度分佈近似球狀，亦即接近藍勃遜 分佈，此圖可觀視出光強度在各角度或方向上的變化。 另，我國專利公告第575759號、美國專利第 ^ 6629764號與第6755545號之導光板皆搭配線形光源而實 施，而後兩者之出光面均為波浪狀，且三者揭露之微結 構均為自導光板底面内凹之角錐形，其中公告第575759 , 號為半圓錐或三角錐形，侧剖視為三角形，第6629764 、 號之微結構係側剖視為二連續之三角形，形狀類似大寫Μ ，且揭露的實例包括底面為斜面，而第6755545號則為 單一之角錐狀。 整體而言，角錐狀内空構造反射光線較易散射而不集 # 中。 【發明内容】 而，本發明之目的即在於提供一種導光板之微結構， 係設置在導光板之底面，其形狀係從導光板底面向内凹之 弧形四邊形或扇形凹陷，藉以提升光線向導光板之出光面 “ 射出，而增進導光板之輝度。 - 本發明係關於導光板之微結構，其中導光板包括入光 、 面、出光面、底面，光源之光由入光面進入導光板，並由 1282021 出光面射料光板’底叫位於出光面之㈣面，微結構 則係設置在底面，且微結構係往導光板内凹之凹陷與導光 板相交構成，係包括-光反射面，該光反射面介於入光面 與出光面之間’並與導光板之底面爽—角度θ，且微結構 之形狀係由出光面俯視為弧形四邊形或扇形 ，而弧形四邊 形具有二平行之孤線邊，且該二弧線邊之弧線係同圓心。 進一步，微結構還包括一後透光面、二侧透光面與一 鏤空面，而後透光面鄰接於光反射面，且相對光反射面係 離導光板之入光面較遠，並與導光板之底面垂直，侧透光 面則鄰接於光反射面之二侧，並與導光板底面垂直，鏤空 面則係導光板之底面之内凹處。 又，前述弧形四邊形之光反射面係由一上寬下窄的截 面圓錐或橢圓錐取出，載面圓錐或橢圓錐之中心、點係靠近 入光面，切割範圍從截面圓錐或橢圓錐中心點切割一角度 沒，而切出圓心角為/3之光反射面。 。八中，弧形四邊形之光反射面係由一上窄下寬的截面 圓錐或橢圓錐取出’截面圓錐或橢圓錐之中心點係靠近後 透光面，切割範圍從截面圓錐或橢圓錐中心點切割一角度 召，而切出圓心角為冷之光反射面。 口又Α述扇形之光反射面係由一上寬下窄的圓錐或擴 圓錐取出，圓錐或橢圓錐之中心點係靠近入光面，切割範 圍從圓錐或橢圓錐中心點切割—角度0，而切 万之光反射面。 4 7 1282021 其中，扇形之光反射面係由一上窄下寬的圓錐或橢圓 錐取出，圓錐或橢圓錐之中心點係靠近後透光面，切割範1282021 9 , ο kl IX, invention description: [Technical field of invention] r The present invention relates to a microstructure of a light guide plate, which is applied to a liquid crystal display, a backlight module of a display, especially a bottom surface of the light guide plate A concave arc or a fan-shaped depression can increase the brightness of the light guide plate. [Prior Art] Please refer to the first figure, which is a schematic diagram 10 of the microstructure 2 of the conventional light guide plate, which is formed by etching on the bottom surface 12 of the smooth light guide plate 1 to produce a microstructure 2 having a rough surface, the light 50 The surface of the microstructure 2 is incident to produce a scattered reflected light 51 or a refracted light 52. When the incident angle of the scattered light 51 incident on the light-emitting surface 11 of the light guide plate is less than the critical angle, the light-emitting plate 1 is emitted and the light surface 11 is emitted; if the incident angle is greater than the critical angle, the light 51 is totally reflected back into the light guide plate 1 and Continue to pass. The second figure explains the coordinates of the third (a) figure, and the third (a) figure shows the light intensity radar chart from the light exit surface 11 of the conventional light guide plate 1. The abscissa indicates the horizontal angle (HA), the movement of the angle is from the normal direction 13 of the light exit surface 11 to the vertical direction 14 of the light source 4; the vertical coordinate table is not perpendicular (Vertical angle, VA), the angular movement From the normal direction 13 of the light exit surface 11, turn to the direction 15 parallel to the light source 4. Third (a). In the figure, 'each closed curve represents the intensity value, which is defined as the luminous flux per unit solid angle. This figure has a closed curve representing 10 levels of light intensity. It can be seen from the third (a) diagram that the light intensity distribution from the conventional light guide plate 1 is similar to the Lambertson distribution (Lambertian 5 1282021 distribution), that is, a circular closed curve is produced on the third (a) diagram, and the light is emitted. The intensity exhibits a distribution of cosine functions. The light intensity is converted into a luminance value, that is, the luminance is equivalent in all directions. ^ Please refer to the third (b) diagram for the light output of the light-emitting surface 11 of the light guide plate 1. This light intensity distribution is approximately spherical, that is, close to the blue Bosson distribution. This figure can observe the change of light intensity in various angles or directions. In addition, the light guide plates of the Chinese Patent Publication No. 575759 and the U.S. Patent Nos. 6,629,764 and 6,755,545 are all implemented with a linear light source, and the light surfaces of the latter two are all wavy, and the microstructures revealed by the three are self. The bottom surface of the light guide plate has a concave pyramid shape, wherein the 575759 is a semi-conical or triangular-shaped cone, and the side cross-section is regarded as a triangle. The microstructure of the No. 6629764 is a two-continuous triangle, and the shape is similar to that of the upper case. And the disclosed examples include a bevel on the bottom surface and a single pyramid on the 6575554. On the whole, the reflected light in the pyramidal hollow structure is easier to scatter without collecting #中. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a microstructure of a light guide plate disposed on a bottom surface of a light guide plate, the shape of which is a curved quadrilateral or a fan-shaped recess from the bottom of the light guide plate to enhance the light guide. The light-emitting surface of the light plate is "exposed to enhance the brightness of the light guide plate. - The present invention relates to the microstructure of the light guide plate, wherein the light guide plate includes light, a surface, a light-emitting surface, and a bottom surface, and the light of the light source enters the light guide plate from the light-incident surface. The 1282021 light-emitting surface light-emitting plate is called the (four) surface of the light-emitting surface, and the microstructure is disposed on the bottom surface, and the microstructure is formed by the concave portion of the light guide plate intersecting with the light guide plate, and includes a light-reflecting surface. The light reflecting surface is between the light incident surface and the light exit surface and is cool with the bottom surface of the light guide plate by an angle θ, and the shape of the microstructure is a curved quadrilateral or a fan shape viewed from the light exit surface, and the curved quadrilateral has two parallel The edge of the lone line, and the arc of the edge of the second arc is the same as the center of the circle. Further, the microstructure further includes a rear transparent surface, two side transparent surfaces and a hollow surface, and the rear transparent surface is adjacent to the light The surface is opposite to the light incident surface of the light guide plate and is perpendicular to the bottom surface of the light guide plate, and the side light transmission surface is adjacent to the two sides of the light reflection surface, and is perpendicular to the bottom surface of the light guide plate, and the hollow surface Then, it is a recess in the bottom surface of the light guide plate. Further, the curved reflecting surface of the curved quadrilateral is taken out by a narrow section cone or an elliptical cone, and the center of the cone or elliptical cone is close to the light. The cutting range is not cut at an angle from the center of the section cone or the elliptical cone, but the light reflection surface with a center angle of /3 is cut out. In the eighth, the curved surface of the curved quadrilateral is composed of a narrow upper and lower width. The cone or elliptical cone is taken out. The center point of the section cone or elliptical cone is close to the rear light transmission surface. The cutting range is cut from the center point of the section cone or elliptical cone, and the angle of the center of the circle is the cold light reflection surface. The fan-shaped light reflecting surface is taken out by a narrow cone or a conical cone. The center point of the cone or elliptical cone is close to the entrance surface, and the cutting range is cut from the center point of the cone or ellipse cone - angle 0, and cut Wanzhiguang reflecting surface 4 7 1282021 Wherein, the fan-shaped light reflecting surface is taken out by a narrow or wide cone or elliptical cone, and the center point of the cone or elliptical cone is close to the rear transparent surface, cutting the fan
石之光反射面。 八中光反射面之侧剖視之形狀係選自直線、内凹之 曲線或外凸之曲線之—。 而本發明各實例之導光板之微結構，確實可有效反射 ❿及局部集中光線以有效提升導光板之輝度。 為了使審查委員能進一步了解本發明之特徵、優點與 技術内谷’请苓考以下有關本發明之較佳實例，並配合所 . 附圖示，作詳細說明解說。 【實施方式】 請參閱第四圖，其係本發明第一實例之微結構6佈列 於導光板1Α之示意圖。其中光線由光源4射入導光板1Α之 入光面10A，而微結構6係設置在導光板1A之底面12A且向 ^内凹之弧形凹陷，並可使光線射出出光面11A，以增進導Stone light reflecting surface. The shape of the side cross-section of the eight-light reflecting surface is selected from a straight line, a concave curve or a convex curve. However, the microstructure of the light guide plate of each example of the present invention can effectively reflect the ❿ and the locally concentrated light to effectively enhance the brightness of the light guide plate. In order to enable the reviewing committee to further understand the features, advantages, and technical aspects of the present invention, the following description of the preferred embodiments of the present invention will be described in conjunction with the accompanying drawings. [Embodiment] Please refer to the fourth figure, which is a schematic view of the microstructure 6 of the first example of the present invention, which is arranged on the light guide plate. The light is emitted from the light source 4 into the light incident surface 10A of the light guide plate 1B, and the microstructure 6 is disposed on the bottom surface 12A of the light guide plate 1A and is concavely recessed into the concave shape, and the light can be emitted out of the light exit surface 11A to enhance guide
構6係一弧形凹陷，係包括光反射面601、後透 面602、側透光面603、604與鏤空面605，光反射面601 —扇形曲面，另請參閱第六圖說明，光反射面601係在 截面圓錐面上沿兩虛線702、703切割後取出之弧狀曲面 而此戴面圓錐之半徑分別為Γι，Γ2，高為h。請參閱第五 8 1282021 (b)圖，切割範圍從截面圓錐中心〇點切割一角度，切 割線702、703對稱於微結構6之中心線701，即切割角度石 被中心線701對分。中心線701往光反射面601方向被稱為 微結構6之指向8。側透光面603、604係被切割線702、703 切割之截面。後透光面6〇2係一弧狀曲面，請參閱第七圖 說明，該後透光面602係在一半徑為r2、高度為h之圓柱面 上沿兩處虛線702、703切割後取出之弧形曲面，圓枉中心 與圓錐中心是相同位置。鏤空面605係一弧形，係微結構6 在導光板1A之底面12A上產生之凹口處。請參閱第五（b )圖，無論從a_a切面、a’-a’切面或a”-a”切面觀察，都可 看到第五（c)圖之微結構6之剖面圖，乃因光反射面601 從截面圓錐面取出一部分，及後透光面602從圓柱面取出 一部分，因此三處剖面圖均相同，光反射面6〇1與導光板 1A之底面12A[圖中為鏤空面605]夾一角度<9，該角度0可 控制光反射面601之變化，影響光線在微結構6之傳遞行為 請參閱第八圖，此圖係光線在微結構6傳遞之示意圖 。光線在微結構6之前方以任意方向傳遞，因此微、结構6形 成弧形之原因，係各方向的光線經過微結構後其出射光之 光路大致變化不大。請參考第八（a)圖與第八（b)圖， 入射光50的方向與從圓錐中心〇點到入射點之連線方向7〇4 相近時’入射光5〇射至微結構6之光反射面6〇ι，入射角α 大於導光板1Α之臨界角42。（導光板之折射率149)，則 9 1282021 反射至上方，增加往法線方向13之出光強度。參考第八（ c)圖，當入射光50之入射角“小於導光板1A之臨界角42。 . ’則光線會穿射第一個微結構6，經過後透光面602到第二 、 個微結構61，在第二個微結構61上作反射[反射光51]或穿 射的動作。上述兩個光線傳遞行為可增加在HA方向之出 光強度。 請參考第八（d)圖與第八（e)圖，當入射光50的方 • 向與從圓錐中心〇點到入射點之連線方向704相遠時，入射 光5〇到達光反射面601後往側方反彈[反射光51]，此光線傳 遞行為可增加在VA方向之出光強度。 ‘ 請參考第九圖，係具有本發明第一實例之微結構6之 ‘ 導光板1A出光之出光強度分佈圖。該圖表示光線從光源4 進入具有微結構6之導光板1A後，接觸微結構6往出光方向 13傳遞，出光角度主要集中在HA二25。、VA=3。處，可知微 結構6之仰角Θ可改變光線在HA方向上之出光角度與出光 修分佈，圓心角占可控制在VA方向上之出光分佈。 睛參考第十圖’其係本發明第二實例之微結構6A之構 造圖。微結構6A係一扇形構造，仍包括光反射面601A、 後透光面602A、側透光面603A、604A與鏤空面605A，光 反射面601A係從尖角圓錐取出之扇形曲面。 請參考第十一圖，其係本發明第三實例微結構6B構造 圖。微結構6B係一弧形凹陷，該弧形凹陷構成之空間包括 光反射面601B、後透光面602B、侧透光面603B、604B與 1282021 鏤空面605B，光反射面601B係一弧形曲面，且第三實例微 結構6B的光反射面601B係往導光板1 c突出。從導光板1 c 往鏤空面605B觀看，第三實例微結構的光反射面601B係由 上窄下寬的截面圓錐面取出，而第一實例微結構6的光反 ， 射面601係由上寬下窄的截面圓錐面取出。The structure is composed of a light reflecting surface 601, a rear transparent surface 602, a side light transmitting surface 603, 604 and a hollow surface 605, and a light reflecting surface 601 - a fan-shaped curved surface. Please also refer to the sixth figure for light reflection. The surface 601 is an arc-shaped curved surface which is taken out along the two broken lines 702 and 703 on the cross-sectional conical surface, and the radius of the wearing cone is Γι, Γ2 and height h, respectively. Referring to the fifth 8 1282021 (b) diagram, the cutting range is cut from the center point of the cross-sectional cone, and the cutting lines 702, 703 are symmetric with respect to the center line 701 of the microstructure 6, that is, the cutting angle stone is divided by the center line 701. The direction of the center line 701 toward the light reflecting surface 601 is referred to as the pointing 8 of the microstructure 6. The side light transmitting surfaces 603, 604 are cut by the cutting lines 702, 703. The rear transparent surface 6〇2 is an arc-shaped curved surface. Please refer to the seventh figure. The rear transparent surface 602 is taken out on a cylindrical surface with a radius of r2 and a height h along two dotted lines 702 and 703. The curved surface, the center of the circle is the same position as the center of the cone. The hollow surface 605 is an arc-shaped portion, and the microstructure 6 is at a notch formed on the bottom surface 12A of the light guide plate 1A. Please refer to the fifth (b) diagram. The cross-section of the microstructure 6 of the fifth (c) diagram can be seen from the a_a section, the a'-a' section or the a"-a" section. The reflecting surface 601 is taken out from the cross-sectional conical surface, and the rear transparent surface 602 is taken out from the cylindrical surface. Therefore, the three cross-sectional views are the same, and the light reflecting surface 6〇1 and the bottom surface 12A of the light guiding plate 1A [the hollow surface 605 in the figure) An angle of <9, which can control the change of the light reflecting surface 601, affects the transmission behavior of the light in the microstructure 6. Please refer to the eighth figure, which is a schematic diagram of the transmission of light in the microstructure 6. The light is transmitted in any direction before the microstructure 6, so that the micro-structure 6 is curved, and the light path of the light emitted from each direction passes through the microstructure and the light path of the emitted light does not change much. Referring to the eighth (a) and eighth (b) diagrams, the incident light 5 is incident on the microstructure 6 when the direction of the incident light 50 is close to the line direction 7〇4 from the center point of the cone to the point of incidence. The light reflecting surface is 6〇, and the incident angle α is larger than the critical angle 42 of the light guide plate 1Α. (The refractive index of the light guide plate is 149), then 9 1282021 is reflected to the upper side, increasing the light intensity in the normal direction 13 . Referring to the eighth (c) diagram, when the incident angle of the incident light 50 is "less than the critical angle 42 of the light guide plate 1A, the light will pass through the first microstructure 6 and pass through the rear transparent surface 602 to the second, The microstructure 61 reflects the [reflected light 51] or the penetrating motion on the second microstructure 61. The above two light transmission behaviors can increase the light intensity in the HA direction. Please refer to the eighth (d) and In the eighth (e) diagram, when the direction of the incident light 50 is far from the line direction 704 from the center point of the cone to the point of incidence, the incident light 5 〇 reaches the light reflecting surface 601 and bounces sideways [reflected light 51 ], this light transmission behavior can increase the light intensity in the VA direction. 'Please refer to the ninth figure, which is a light intensity distribution diagram of the light guide plate 1A having the microstructure 6 of the first example of the present invention. After the light source 4 enters the light guide plate 1A having the microstructure 6, the contact microstructure 6 is transmitted to the light exiting direction 13, and the light exit angle is mainly concentrated on the HA 25 and VA=3. It can be seen that the elevation angle of the microstructure 6 can change the light. The light exit angle and the light distribution in the HA direction, the central angle can be controlled in VA The light distribution is upward. The eleventh figure is a structural diagram of the microstructure 6A of the second example of the present invention. The microstructure 6A is a fan-shaped structure, which still includes a light reflecting surface 601A, a rear light transmitting surface 602A, and a side light transmission. The surface 603A, 604A and the hollow surface 605A, the light reflecting surface 601A is a fan-shaped curved surface taken out from the pointed cone. Please refer to the eleventh drawing, which is a structural diagram of the third embodiment microstructure 6B of the present invention. The microstructure 6B is an arc. The recessed portion, the space formed by the arcuate recess includes a light reflecting surface 601B, a rear light transmitting surface 602B, a side light transmitting surface 603B, 604B and a 1282021 hollow surface 605B, the light reflecting surface 601B is a curved curved surface, and the third example microstructure The light reflecting surface 601B of 6B protrudes toward the light guiding plate 1 c. The light reflecting surface 601B of the third example microstructure is taken out from the upper and lower wide cross section of the conical surface, as viewed from the light guiding plate 1 c toward the hollow surface 605B, and the first The light inversion of the example microstructure 6 is taken from the conical surface of the upper and lower narrow sections.
請參考第十二圖，其係本發明第四實例微結構6C構造 圖。微結構6C係一扇形構造，包括光反射面601C、側透光 φ 面603C、6〇4C與鏤空面6〇5C，光反射面6〇ic係一扇形曲 面，且第四實例微結構6C的光反射面601C係往導光板1D 突出。第四實例微結構6C取自尖角圓錐，因此沒有後透光 • 面0 請參考第十三圖，其係本發明第五實例微結構6D上視 圖。從上方觀察光反射面601D係橢圓形之弧狀或扇狀。切 割線702D、703D從橢圓之焦點往外晝出侧透光面6〇3d、 604D，而與橢圓線之切線相垂直。 ⑩ 請參考第十四圖，其係本發明第六實例微結構6E側視 圖，從侧面觀察光反射面601E係外凸之曲線。請參考第十 五圖’其係本發明第七實例微結構6F侧視圖，從侧面觀察 光反射面601F係内凹之曲線。 上述第二〜第七實例與第一實例相比，各實例因光反 射面601與601A〜601F取出之曲面不同而產生不同光線傳遞 ^ 分佈’但整體而言，光線在各實例之微結構6與6A〜6F之傳 - 遞行為類似，且都是增加導光板之輝度與均勻度。 11 1282021 μ參考第十六圖〜第二十一圖，係以本發明第一實例 :例々本發明之微結構分佈於導光板之上視圖。第十六圖 係第四圖之上視圖，微結構6在導光板认上呈現規則分 斤有微結構6之指向8均朝同一方向，且朝向線性光源 4的=，以利光線射人微結構產生增亮現象。 明參考第十七圖’微結構6在導光板1Α1上呈現規則分 2所有微結構6之指向8非朝同一方向，但整體來講，微 •結構6有傾向朝線性光源4的方向的趨勢 ，以利光線射入微 結構產生增亮現象。 請參考第十八圖，其微結構6在導光板1Α2上呈現亂數 分佈，所有微結構6之指向8均朝同一方向，且朝向線性光 、 源4的方向，以利光線射入微結構產生增亮現象。 請參考第十九圖，其微結構6在導光板1Α3上呈現亂數 分佈，所有微結構6之指向8非朝同一方向，但整體來講， 微結構6有傾向朝線性光源4的方向的趨勢，以利光線射入 9 微結構產生增亮現象。 請參考第二十圖，其微結構6在導光板1Α4上呈現規則 分佈，所有微結構6之指向8有全部或部分朝向點光源41的 方向，以利光線射入微結構產生增亮現象。 請參考第二十一圖’其微結構6在導光板1Α5上呈現亂 數分佈，所有微結構6之指向8有全部或部分朝向點光源41 的方向，以利光線射入微結構產生增亮現象。 ‘ 第十六圖〜第二十一圖中，微結構6可採用上述實例中 12 1282021 的其中一種，或混合兩種以上實例之微結構。而上述實例 之微結構分佈，有利光線射入微結構產生增亮現象而提升 輝度，且使導光板產生高均勻性面型出光。 如上所述，根據本發明，可提高導光板之輝度與均勻 度，改善液晶顯示器的顯示效能，與節省顯示器之電量消 耗。惟本發明已經被詳細說明，應明暸的是各種改變、代 替與更替可以被進行，而不背離由附呈申請專利範圍所界 定之本發明的精神與範圍。 【圖式簡單說明】 第一圖係為習知導光板微結構之示意圖。 第二圖係習知導光板之出光面出光示意圖[亦係說明第三 圖之座標轴]。 第三（a)圖係習知導光板之出光面出光強度雷達圖。 第三（b)圖係習知導光板之出光面出光強度立體圖。 第四圖係為本發明微結構第一實例佈設於導光板之示意圖 〇 第五（a)圖係為本發明微結構第一實例構造圖。 第五（b)圖係為本發明微結構第一實例上視圖。 第五（c)圖係為本發明微結構第一實例剖面圖。 第六（a)圖係為本發明輔助說明光反射面取於截面圓錐 面之不意圖。 第六（b)圖係為本發明輔助說明光反射面取於截面圓錐 面之側視圖。 13 1282021 第七圖係為輔助說明後透光面取於圓柱面之示意圖。 第八（a)圖係為光線在微結構傳遞行為之示意圖。 第八（b)圖係為光線在微結構傳遞行為一之侧視圖。 " 第八（c)圖係為光線在微結構傳遞行為二之側視圖。 - 第八（d)圖係為光線在微結構傳遞行為三之示意圖。 第八（e)圖係為光線在微結構傳遞行為三之前視圖。 第九（a)圖係為本發明微結構第一實例之導光板出光之 | 出光強度雷達圖。 第九（b)圖係為本發明微結構第一實例之導光板出光之 出光強度立體圖。 . 第十圖係為本發明微結構第二實例構造圖。 第十一圖係為本發明微結構第三實例構造圖。 第十二圖係為本發明微結構第四實例構造圖。 第十三圖係為本發明微結構第五實例微結構分佈之上視圖 〇 • 第十四圖係為本發明微結構第六實例微結構分佈之侧視圖 〇 第十五圖係為本發明微結構第七實例微結構分佈之侧視圖 0 第十六圖〜第二十一圖係以本發明第一實例為例，本發明 ' 之微結構分佈於導光板之上視圖。 【主要元件符號說明】 、 1、ΙΑ、1A卜 1A2、1A3、1A4、1A5 導光板 14 1282021 10A 入光面 11、 11A 出光面 12、 12A 底面 ' 13 出光面之法線方向 14 與燈源垂直方向 15 與燈源平行方向 2 微結構 ^ 3 反射片 4 線性光源 5 光線 50 入射光線 51 反射光線 52 折射光線 6、61、6A、6B、6C、6D、6E、6F 微結構 601、 601A、601B、601C、601D、601E、601F光反射 • 面 602、 602A後透光面 603、 604、603A、604A 側透光面 605、605A鏤空面 701 中心線 702、703、702A、703A 切割線 - 704 圓錐中心至入射點之連線方向 705 光反射面之法線方向 15 1282021 8 指向 β 圓心角 Θ 仰角 h 高度 Γι 弧形半徑 r2 弧形半徑 a 入射角Please refer to the twelfth figure, which is a configuration diagram of the fourth embodiment microstructure 6C of the present invention. The microstructure 6C is a sector-shaped structure including a light reflecting surface 601C, a side light transmitting φ surface 603C, a 6〇4C and a hollow surface 6〇5C, a light reflecting surface 6〇ic is a sector curved surface, and the fourth example microstructure 6C The light reflecting surface 601C protrudes toward the light guiding plate 1D. The fourth example microstructure 6C is taken from a pointed cone, so there is no back light transmission. • Face 0. Referring to Figure 13, it is a top view of the microstructure of the fifth embodiment of the present invention. The light reflecting surface 601D is an elliptical arc or fan shape as viewed from above. The cutting lines 702D, 703D are drawn outward from the focus of the ellipse to the side light-transmissive surfaces 6〇3d, 604D, and are perpendicular to the tangent of the elliptical line. 10 Referring to Fig. 14, which is a side view of the sixth embodiment of the microstructure 6E of the present invention, the curve of the light reflecting surface 601E is convex from the side. Referring to the fifteenth figure, which is a side view of the microstructure 6F of the seventh example of the present invention, the concave curve of the light reflecting surface 601F is viewed from the side. The second to seventh examples described above are different from the first example in that each of the examples has different light transmission distributions due to the different curved surfaces taken out by the light reflecting surface 601 and 601A to 601F, but overall, the light is in each instance of the microstructure 6 Similar to the transfer behavior of 6A~6F, and both increase the brightness and uniformity of the light guide plate. 11 1282021 μ Referring to the sixteenth to twenty-firstth drawings, a first example of the present invention is used. The microstructure of the present invention is distributed over the light guide plate. The sixteenth figure is a top view of the fourth figure, the microstructure 6 is presented on the light guide plate to present a regular rule. The orientations 8 of the microstructures 6 are all facing the same direction, and toward the linear light source 4, to facilitate the light to shoot people. The structure produces a brightening phenomenon. Referring to the seventeenth figure, the microstructures 6 exhibit a regular division on the light guide plate 1Α1. The orientations of all the microstructures 6 are not in the same direction, but overall, the microstructures 6 tend to be in the direction of the linear light source 4. Eli light is incident on the microstructure to produce a brightening phenomenon. Referring to the eighteenth figure, the microstructure 6 exhibits a random number distribution on the light guide plate 1Α2, and the directions 8 of all the microstructures 6 are all facing in the same direction, and are oriented toward the linear light and the source 4, so that the light is incident on the microstructure. Brightening occurs. Referring to the nineteenth figure, the microstructure 6 exhibits a random number distribution on the light guide plate 1Α3, and the orientations 8 of all the microstructures 6 are not in the same direction, but as a whole, the microstructures 6 tend to face the direction of the linear light source 4. The trend is that the light is incident on the 9-microstructure to create a brightening phenomenon. Referring to the twentieth diagram, the microstructures 6 are regularly distributed on the light guide plate 1Α4, and all the projections 8 of the microstructures 6 are directed in all or part of the direction toward the point source 41, so that light is incident on the microstructure to cause brightness enhancement. Please refer to the twenty-first figure 'the microstructure 6 presents a random number distribution on the light guide plate 1Α5, and all the pointing points 8 of the microstructures 6 have all or part of the direction toward the point light source 41, so that the light is incident on the microstructure to generate brightness. phenomenon. In the sixteenth to twenty-firstth drawings, the microstructure 6 may be one of 12 1282021 in the above example, or a hybrid of two or more examples. The microstructure distribution of the above example is advantageous for the light to enter the microstructure to produce a brightening phenomenon to enhance the brightness, and to make the light guide plate produce a highly uniform surface light. As described above, according to the present invention, the luminance and uniformity of the light guide plate can be improved, the display performance of the liquid crystal display can be improved, and the power consumption of the display can be saved. It is to be understood that the invention has been described in detail, and it is understood that various modifications, alternatives, and alternatives can be made without departing from the spirit and scope of the invention as defined by the appended claims. [Simple description of the drawings] The first figure is a schematic diagram of a conventional light guide plate microstructure. The second figure is a schematic diagram of the light exiting the light-emitting surface of the conventional light guide plate [also indicating the coordinate axis of the third figure]. The third (a) diagram is a radar image of the light exiting intensity of the conventional light guide plate. The third (b) figure is a perspective view of the light exiting intensity of the light guide plate of the conventional light guide plate. The fourth figure is a schematic view of the first example of the microstructure of the present invention disposed on the light guide plate. 第五 The fifth (a) diagram is a first example structural diagram of the microstructure of the present invention. The fifth (b) diagram is a top view of the first example of the microstructure of the present invention. The fifth (c) drawing is a cross-sectional view of the first example of the microstructure of the present invention. The sixth (a) diagram is a schematic illustration of the fact that the light reflecting surface is taken from the cross section of the cross section. The sixth (b) diagram is a side view of the invention in which the light reflecting surface is taken from the cross section of the cross section. 13 1282021 The seventh figure is a schematic diagram of the transparent surface taken from the cylindrical surface. The eighth (a) diagram is a schematic diagram of the behavior of light transmission in the microstructure. The eighth (b) diagram is a side view of the behavior of light transmission in the microstructure. " The eighth (c) diagram is a side view of the behavior of light passing through the microstructure. - The eighth (d) diagram is a schematic diagram of the behavior of light passing through the microstructure. The eighth (e) diagram is a view of the light before the transfer behavior of the microstructure. The ninth (a) figure is a light-emitting intensity radar chart of the light guide plate of the first example of the microstructure of the present invention. The ninth (b) is a perspective view of the light output intensity of the light guide plate of the first example of the microstructure of the present invention. The tenth figure is a structural diagram of the second example of the microstructure of the present invention. The eleventh figure is a third example construction diagram of the microstructure of the present invention. The twelfth figure is a structural diagram of a fourth example of the microstructure of the present invention. The thirteenth figure is a top view of the microstructure of the fifth example of the microstructure of the present invention. The fourteenth figure is a side view of the sixth example of the microstructure of the microstructure of the present invention. Side view of the seventh example microstructure distribution of the structure. Fig. 16 to Fig. 21 show a first embodiment of the present invention. The microstructure of the present invention is distributed over the light guide plate. [Main component symbol description], 1, ΙΑ, 1A Bu 1A2, 1A3, 1A4, 1A5 Light guide plate 14 1282021 10A Light-incident surface 11, 11A Light-emitting surface 12, 12A Bottom surface 13 13 Normal direction of the light-emitting surface 14 Vertical to the light source Direction 15 Parallel to the light source 2 Microstructure ^ 3 Reflector 4 Linear light source 5 Light 50 Incident light 51 Reflected light 52 Refracted light 6, 61, 6A, 6B, 6C, 6D, 6E, 6F Microstructure 601, 601A, 601B , 601C, 601D, 601E, 601F light reflection • Surface 602, 602A rear light transmission surface 603, 604, 603A, 604A side light transmission surface 605, 605A hollow surface 701 center line 702, 703, 702A, 703A cutting line - 704 cone Line direction from center to incident point 705 Normal direction of light reflecting surface 15 1282021 8 Pointing to β center angle 仰 elevation angle h height Γι arc radius r2 arc radius a angle of incidence