九、發明說明： 【發明所屬之技術領域】 液曰i發=關於=面發絲置及其導光板，尤指一種用於 液曰日顯不盗中之面發光裝置及其導光板。 【先前技術】 為達=液板中之液晶本身不具發光特性，因而’ 顯不效果，須給液晶顯示器面板提供一面發光裝置，其 源=在於向液晶顯4面板供鱗度充分且分佈均勻之面光 靈於前技術之面發域置如第―®及第二騎示，其揭 心恭11月21日公開之㈣專辦請第.㈣2454號， 該面發光裝置包括一光源1〇〇及一導光板1〇1。 光二個發光部102 ’該發光部102内設置發 對了曰H该導光板101之一端面(未標示)與光源100相 111 102正對之區域設置複數呈三角錐狀之切槽Nine, the invention: [Technical field of the invention] Liquid helium hair = about = face hair and its light guide, especially a surface light-emitting device and its light guide for liquid helium. [Prior Art] The liquid crystal in the liquid plate does not have the illuminating property, so it is not effective. It is necessary to provide a light-emitting device to the liquid crystal display panel. The source = the sizing of the liquid crystal display panel is sufficient and evenly distributed. The surface of the former technology is set as the first - and the second riding, and it is unveiled on November 21st. (4) Specially requested. (4) No. 2454, the surface illuminating device includes a light source. And a light guide plate 1〇1. The light-emitting portions 102' are disposed in the light-emitting portion 102. The end faces (not labeled) of the light guide plate 101 and the light source 100 are opposite to the light source 100, and a plurality of triangular pyramid-shaped slots are provided.
Ula :該祕域llla分成二_成二個光擴散部ui。 自七光二極體21發出之光線經與發光部1〇2相對之受光 導光板101内，由於三角錐狀之切槽ma具 ^相對於導光板端面傾斜之二個面，因此，以一定角度入射至 古111上之光線將被擴散後進入導光板1〇1内從而提 尚導光板101之光出射面(未標示)上出光輝度之均勻性。 —惟^由於發光二極體21係點狀光源，其發出之光線具有 二之4散角度，J_ ’人射至不同切槽ma之光線之入射角 广亦不相同’該面發光裝置之切槽ma以怪定不變之方式設 計’顯然未充分考慮其對不同入射角度光線之不同擴散作用， 因此’該面發光裝置雖然藉由切槽ma可實現一定程度之出 光輝度均勻化，但仍然不足。 ^於此’提供__種改進以上缺點之面發光裝置及其導光 板貫為必要。 1326784 【發明内容】 麟鳴綱㈣性 本發明解決之又-技術問題在於提供 並使出射光輝度均勻性更高之導光板。 ⑴西己。點先源 解決麟_之肋方案為：提供—種面發光裝 至少—點光源及—導光板’該導光板包括至少-; 2 71與絲人射面相交之底面及—與該底面姉之光出Ula: The secret domain llla is divided into two into two light diffusing portions ui. The light emitted from the seven-light diode 21 passes through the light-receiving light guide plate 101 opposite to the light-emitting portion 1〇2, and since the triangular-shaped tapered groove has two faces inclined with respect to the end surface of the light guide plate, at a certain angle The light incident on the ancient 111 will be diffused and then enter the light guide plate 1〇1 to improve the uniformity of the luminance on the light exit surface (not shown) of the light guide plate 101. - Only ^ Because the light-emitting diode 21 is a point light source, the light emitted by it has a divergence angle of two, and the incident angle of the light that J_ 'person shoots into different slots ma is not the same. 'The light of the surface is cut. The groove ma is designed in a strange way. 'The diffusion effect of the light at different incident angles is obviously not fully considered. Therefore, although the surface light-emitting device can achieve a certain degree of light luminance uniformity by the groove ma, it is still insufficient. Here, it is necessary to provide a surface light-emitting device and a light guide plate which improve the above disadvantages. 1326784 SUMMARY OF THE INVENTION The present invention solves the problem of providing a light guide plate having higher uniformity of emitted light. (1) Xiji. The point source first solves the lining rib scheme: providing - the surface illuminating device at least - the point source and the light guide plate - the light guide plate comprises at least -; the bottom surface of the intersecting surface of the silk human face and the surface of the surface Light out
ίί宽ί 入射面具複數V型切槽，該v型切 ίίϊ度、冰度梯度式變化’該至少―點光源係正對於具最 大寬度、深度之V型切槽設置。 本發明解決又一技術問題之技術方案為：提供一 ϋ包括至少—光人射面、—與該光人射面相交之底面及-二该J面相對之光出射面’其中’該至少—光人射面具複數V 3L切抬，該V型切槽之寬度、深度呈梯度式變化。Ίί宽ί The entrance mask is a plurality of V-cuts, the v-curve, the gradient of the ice gradient. The at least the point source is set for the V-groove with the largest width and depth. The technical solution of the present invention is to provide a method including: at least a light human face, a bottom surface intersecting the light human face, and a light exit surface opposite to the J face, wherein the at least The light man shoots the mask with a plurality of V 3L cuts, and the width and depth of the V-shaped slit change in a gradient manner.
與先前技術相比，本發明種面發光裝及導光板之優點在 於·因複數切槽係呈梯度式變化，其寬度自與點光源正對之光 =射面處向二側逐漸減小，從而使得距點光源較遠處之切槽獲 得對，f更大之擴散能力，進而使導光板端角區域接收較多光 線並提高光出射面出光輝度之整體均勻性。 【實施方式】 一併參考第三圖及第四圖，其係本發明面發光裝置之第 一貫鈿方式，該面發光裝置3〇包括一導光板31、二點光源33 及一反射板35。 其中該導光板31係一楔形導光板，其包括一光入射面 313 ’ 一與光入射面313相交之底面315，一與該底面315相 對光出射面311。該二點光源33相對於光入射面313設置， f可以為發光二極體或小燈泡。該導光板31之底面315設置 複數規則分佈之網點37 ’該光出射面311上設置複數v形切 7 1326784 槽3111。反射板35貼合於導光板31之底面315 —侧，該反 射板35亦可由鍍覆於底面315及網點37上之反射膜替代。 該光入射面313上設置複數與該點光源33相對之v形切 槽3131，該複數切槽3131之深度D恆定，寬度W自與點光 源33正對之光入射面313處向二側逐漸減小。該切槽3131 係與光出射面311垂直並貫通光出射面311及底面315。 如第五圖所示’係該複數切槽3131對發光二極體33所發 -出光線之擴散原理圖，詳述如下。當導光板31不具切槽3131 時，光線331將入射至虛擬平面3133(虛線所示平面），並經折 射後以光線3311進入導光板31 ;當導光板31具本發明之切鲁 槽3131時，光線331入射至相對光入射面M3傾斜之斜面 3131a時，其將被折射為光線3313進入導光板31，比較光線 3311及光線3313之行進路徑，可見光線3313之擴散角度較 大。又’當光線332入射至與斜面3131a平行之虛擬平面3131c 時，其將經折射後以光線3321進入導光板31 ;當光線332入 射至相對光入射面313傾斜之斜面3131b時，其將被折射為光 線3323進入導光板31，比較光線3321及光線3323之行進路 徑’可見光線3323之擴散角度較大，亦即：因本發明之切槽 3131之寬度w自與點光源33正對之光入射面313處向二側 逐漸減小，該發光二極體33自身光線之發散特性配合切槽鲁 3131之斜面3131a、3131b之變化，從而使得距點光源33較 遠處之切槽3131獲得對光線332更大之擴散能力，進而使導 光板31端角31a區域接收較多光線並提高光出射面311出光 輝度之整體均勻性。 八自複數切槽3131擴散後進入導光板31之光線，其中一部 刀直接經光出射面311出射，其他一部分光線則經過底面315 網點37之散射後自光出射面311出射。反射板35則可使自底 面315漏出之光線反射回光出射面311出射，從而提高出射光 之輝度。該光出射面311上設置之複數V形切槽3111亦對光 8 1326784 線起匯聚作用，以進一步提高出射光之輝度。 #請參考第六圖及第七圖，係本發明“ f方^該面發光裝置5G亦包括—導光板 及反射板55，其同第三圖所示面發光裝置3〇 於 平板形導光板’且該導光板51包括二相對之光^ 料點光源53分別相對該二光入射面513設置。 點57°ϋ3底面515之網點57距離點光源53越遠，網 射ϋΛ’以對遠離點光源53之光線充分散射，提高 光出射面511出光輝度之整體均勻性。 止篇^二光入射面513均設置複數切槽51幻，且，因遠離點 ^源53之切槽5131接收之光線係傾斜入射，該切样5131、、m ，較深時’其底部難以接收到光線，故射該 J = 匕自與53正對之光场 ^^ 31之寬度W亦自與點光源53正對之光入5 體均勻性:一側逐漸減小’以提高光出射面511出光輝度之整 &。Ϊ上ff ’本發明符合發明專利要件，爰依法提出專利申 ί技範之 1 士所僅為本發明之較佳實施方式’舉凡熟悉本 ίΪ神所作之等效輸變化’ 【圖式簡單說明】 圖係$前技術面發光裝置之平面圖。 f了圖所示面發光裝置之導光板之立體圖。 面發光打第―實施方式之立體圖。 光源ίΞΞΓ發明面發光裝置第一實施方式之導光板及點 光源！==二面發光裝置第-實施方式之導先板及點 第六圖係本發明面發光裝置第二實施方式之立體圖。 9 1326784 第七圖係本發明面發光裝置第二實施方式之導光板及點 光源之平面圖。 【主要元件符號說明】 面發光裝置30、50 導光板31'51 反射板 35、55 點光源 33、53 光入射面313、513 光出射面 311、511 底面 315、515 網點 37、57 切槽 3111、3131、5131 端角 31a 斜面 3131a、3131b 虛擬平面 3133、3131c 光線 ' 331、332、3311、3313、3321、3323Compared with the prior art, the advantages of the surface light-emitting device and the light guide plate of the present invention are that the width of the plurality of grooving systems is gradually changed from the light source facing the point source to the two sides. Therefore, the slot at a distance from the point source is obtained, and f is more diffused, so that the end region of the light guide plate receives more light and improves the overall uniformity of the light exiting light. [Embodiment] Referring to the third and fourth figures, which is a first mode of the surface emitting device of the present invention, the surface emitting device 3 includes a light guide plate 31, a two-point light source 33 and a reflection plate 35. . The light guide plate 31 is a wedge-shaped light guide plate, and includes a light incident surface 313 ′ a bottom surface 315 intersecting the light incident surface 313 , and a light exit surface 311 opposite to the bottom surface 315 . The two-point light source 33 is disposed relative to the light incident surface 313, and f may be a light emitting diode or a small light bulb. The bottom surface 315 of the light guide plate 31 is provided with a plurality of regularly distributed dots 37'. The light exit surface 311 is provided with a plurality of v-cuts 7 1326784 slots 3111. The reflector 35 is attached to the side of the bottom surface 315 of the light guide plate 31. The reflector 35 can also be replaced by a reflective film plated on the bottom surface 315 and the dot 37. The light incident surface 313 is provided with a plurality of v-shaped slits 3131 opposite to the point light source 33. The depth D of the plurality of slits 3131 is constant, and the width W gradually increases from the light incident surface 313 opposite to the point light source 33 toward the two sides. Reduced. The slit 3131 is perpendicular to the light exit surface 311 and penetrates the light exit surface 311 and the bottom surface 315. As shown in the fifth figure, the principle of diffusion of the light emitted from the plurality of slits 3131 to the light-emitting diode 33 is as follows. When the light guide plate 31 does not have the slit 3131, the light ray 331 will be incident on the virtual plane 3133 (the plane indicated by the dashed line), and after being refracted, enter the light guide plate 31 with the light 3311; when the light guide plate 31 has the cut slot 3131 of the present invention. When the light ray 331 is incident on the inclined surface 3131a inclined with respect to the light incident surface M3, it is refracted into the light guide 3313 and enters the light guide plate 31, and the traveling path of the light ray 3311 and the light ray 3313 is compared, and the diffusion angle of the visible light line 3313 is large. Further, when the light ray 332 is incident on the virtual plane 3131c parallel to the inclined surface 3131a, it will be refracted and enter the light guide plate 31 as the light ray 3321; when the light ray 332 is incident on the inclined surface 3131b opposite to the light incident surface 313, it will be refracted. When the light ray 3323 enters the light guide plate 31, the diffusion path of the visible light line 3323 of the light ray 3321 and the light ray 3323 is larger, that is, the light width of the slit 3131 of the present invention is incident from the light source facing the point light source 33. The surface 313 is gradually reduced toward the two sides, and the diverging characteristic of the light of the light-emitting diode 33 is matched with the change of the slopes 3131a and 3131b of the slot 3131, so that the slot 3131 farther from the point source 33 obtains the light. The larger diffusion capacity of the 332 further allows the light source plate 31 to receive more light in the corner 31a region and improve the overall uniformity of the light exiting surface 311. The light from the plurality of slits 3131 diffuses into the light guide plate 31, and one of the blades is directly emitted through the light exit surface 311, and the other portion of the light is scattered from the light exit surface 311 through the bottom surface 315. The reflecting plate 35 reflects the light leaked from the bottom surface 315 back to the light exiting surface 311, thereby increasing the brightness of the outgoing light. The plurality of V-shaped slits 3111 provided on the light exit surface 311 also converge on the line 8 1326784 to further increase the brightness of the emitted light. #Please refer to the sixth and seventh figures, which are the "f square" surface light-emitting device 5G also includes a light guide plate and a reflection plate 55, and the surface light-emitting device 3 shown in the third figure is attached to the flat-plate light guide plate. And the light guide plate 51 includes two opposite light point light sources 53 respectively disposed opposite to the two light incident surface 513. The point 57 of the bottom surface 515 of the 57° ϋ3 is farther from the point light source 53, and the net ϋΛ 以The light of the light source 53 is sufficiently scattered to improve the overall uniformity of the light emitted by the light exit surface 511. The second light incident surface 513 is provided with a plurality of slits 51, and the light received by the slit 5131 away from the source 53 It is obliquely incident, the cut 5131, m, when it is deep, it is difficult to receive the light at the bottom, so the width of the light field ^^ 31 that is opposite to the plane of the J = 匕 is also positive from the point source 53 To the light uniformity of 5: one side gradually decreases 'to improve the brightness of the light exit surface 511. Ϊ上ff' This invention complies with the invention patent requirements, and the patent application patent law It is only a preferred embodiment of the present invention. ' [Simple description of the drawing] Fig. is a plan view of the light-emitting device of the front technical surface. f. A perspective view of the light guide plate of the surface-emitting device shown in the figure. The surface illumination is a perspective view of the first embodiment. Light guide plate and point light source of the embodiment!==Two-sided light-emitting device First embodiment and a sixth point of the present invention are perspective views of a second embodiment of the surface light-emitting device of the present invention. 9 1326784 The seventh figure is a surface of the present invention. Plan view of the light guide plate and the point light source of the second embodiment of the light-emitting device. [Description of main component symbols] Surface light-emitting device 30, 50 Light guide plate 31'51 Reflector 35, 55 Point light source 33, 53 Light incident surface 313, 513 Light exit Face 311, 511 bottom surface 315, 515 mesh point 37, 57 grooving 3111, 3131, 5131 end angle 31a slant 3131a, 3131b virtual plane 3133, 3131c ray '331, 332, 3311, 3313, 3321, 3323