M323982 .八、新型說明·· 【新型所屬之技術領域】 ’ ^創作係針對背光照明單元當中的導光板之成型裝 置，曰在提供一種成型材料由入料口入料進入澆道時，藉 由變形槽道調整成型材料進入模穴之速度，使其流動速度 -較為一致’以解決模穴充填不足、短射現象或成型厚度不 均之導光板成型裝置。 _【先前技術】 &光板的主要功能是藉由光折射原理將光源入射的 平行光轉換成平面垂直光，且一般亦會於導光板上設置複 數調光結構，如圓形或方形等圖案，當光源進入導光板而 碰到這些調光結構時，反射光會往所需的方向擴散，因此 利用疏，、大小不同的調光結構設計，可使導光板面均勻 發光。導光板之功用在於引導光的散射或全反射方向，一 方面可用來提高輝度，另—方面也可確保離開導光板之光 „線亮度的均勻性，因此導光板為當前LCD顯示面板中的重 要元件特別疋背光模組所不可或缺的元件，而且導光板 之认计與製造攸關背光模組的光學設計以及輝度、均細度 的控制，為背光模組廠商最主要的技術與成本所在。 目刖導光板之製造方法主要可分為兩大類：印刷式製 程與非印刷式製程，其中，該印刷製程係在導光板基板完 成後，將含有高發散光物質（如之印刷材料 印裝在V光板基板底部，然後進行熱化固定。該原理係藉 M323982 由高發散㈣對光吸收再擴散之性f，造成㈣傳播，進 而使光線在導歧㈣擴制來，最後由導光板正面均句 射出，。而非印刷製程係將設計好之導光圖樣（如光學微結 構）製作在杈仁上，採用熔融塑料於模具中直接射出成型 或壓印製作，不必再經過熱化固定步驟，簡化製程，且其 精度較印刷式製程高。 〃 一如第圖（A)、（B)所示，係利用射出成型方式製造導 光板之成型模具，該成型模具丨係設有可動模u、固定 杈12以及設於可動模丨丨與固定模12中之模仁13，當可 動模11與固定模12合模後，使兩模仁13間形成有模穴 15，其可動模11與固定模12中設有可通往模穴π之入 料口 16及澆道π，由入料口 16注入成形材料，再由澆 道17進入模八15，而當成型材料漸漸冷卻，再利用模具 固定夾將可動模11移開，藉由真空吸取裝置將導光板: 模穴中取出，即可得到導光板2。 惟，所成型之導光板2結構多為楔型結構，如第一圖 (C)所示，但現今因需求以發展輕薄成品為主，漸漸導入 平板式薄型化產品，其導光板成品為長寬遠大於厚度之產 品，若成型材料直接利用該入料口及澆道填充於模穴時， 較無法達到薄型化導光板之成品；且該成型材料流動速度 不同，如第二圖（A)所示，即靠近模穴中間成型材料之= 動速度較兩侧為快，則形成如圖所示之波形A，使整體^ 光板2成型後，會形成如剖面線所示之區域，亦即會有短 射現象；再者如第二圖（B)所示，為另種短視現象Y即^ 6 M323982 =核八：間成型材料之流動速度較兩 所示之區域，使1^：先板2成型後’會形成如剖面線 传到之導光板具有不平整之外觀。 【新型内容】 有鑑於此’本創作即在提供 =堯道時’藉由變形槽道調整成型材二= 速度較為一致’以解決模穴充填不足、短射 現象之導光板成型裳置。 爲達上述㈣’本創作之成型模具設有可動模、固定 設於可動模與固絲中之模仁，當可動模與固定模 a板後’使兩模仁間形成有模穴，其可動模與固賴中設 有可通往模穴之人料D及祕，魏道係由人料Π朝模穴 一側形成面積漸大之_部；其中，該擴張部凹設有至少 一變形槽道’其變形槽道係形賴穴人料時之溢料空間， 可調整模穴人料時之人料速度，以解決模穴充填不足、短 射現象。 【實施方式】 本創作「導光板之成型裝置」，其成型模具結構如第 三圖所示，其成型模具1同樣設有可動模丨丨、固定模12以 及設於可動模11與固定模12中之模仁13,當可動模丨丨與固 疋模12合模後，使兩模仁13間形成有模穴15，其可動模11 與固定模12中設有可通往模穴15之入料口16及澆道17，由 7 M323982 入料口 16、注入成形材料。M323982 . VIII. New Description·· 【New Technical Fields 】 ' ^ The authoring department is for the forming device of the light guide plate in the backlight unit, and provides a molding material when the material is fed into the runner through the inlet. The deformation channel adjusts the speed at which the molding material enters the cavity, so that the flow velocity is relatively uniform, to solve the problem of insufficient cavity filling, short-shot phenomenon or uneven thickness forming of the light guide plate. _[Prior Art] The main function of the light plate is to convert the parallel light incident from the light source into plane vertical light by the principle of light refraction, and generally also set a plurality of dimming structures on the light guide plate, such as a circular or square pattern. When the light source enters the light guide plate and encounters these dimming structures, the reflected light will diffuse in the desired direction. Therefore, the dimming structure with different sizes and sizes can be used to uniformly illuminate the surface of the light guide plate. The function of the light guide plate is to guide the scattering or total reflection direction of the light, on the one hand, it can be used to improve the brightness, and on the other hand, it can ensure the uniformity of the brightness of the light leaving the light guide plate, so the light guide plate is important in the current LCD display panel. The components are particularly indispensable for the backlight module, and the optical design of the light guide plate and the optical design of the backlight module and the control of brightness and uniformity are the most important technologies and costs for the backlight module manufacturer. The manufacturing method of the light guide plate can be mainly divided into two major categories: a printing process and a non-print process, wherein the printing process is performed after the light guide plate substrate is completed, and the high light emitting material (such as the printed material is printed on the printed material) The bottom of the V-light board substrate is then fixed by heating. The principle is based on the high-diffusion (4) light absorption and re-diffusion property of M323982, causing (4) propagation, and then the light is spread in the guide (4), and finally the front side of the light guide plate is The sentence is printed. The non-printing process is to design a light guide pattern (such as optical microstructure) on the coix seed, using molten plastic in the mold. Injection molding or imprinting, no need to go through the heating and fixing step, simplify the process, and its accuracy is higher than that of the printing process. 〃 As shown in the figure (A), (B), the light guide plate is manufactured by injection molding. a molding die, the molding die is provided with a movable die u, a fixed jaw 12, and a mold core 13 disposed in the movable die and the fixed die 12, and when the movable die 11 and the fixed die 12 are clamped, the two molds are A cavity 15 is formed between the dies 13 and a movable die 11 and a fixed die 12 are provided with a feed port 16 and a runner π which can lead to the cavity π, and the molding material is injected from the inlet port 16, and then the runner 17 is injected. The mold 8 is entered, and when the molding material is gradually cooled, the movable mold 11 is removed by the mold fixing clip, and the light guide plate is taken out by the vacuum suction device to obtain the light guide plate 2. However, the formed light guide plate is obtained. The structure of the light guide plate 2 is mostly a wedge-shaped structure, as shown in the first figure (C), but nowadays, due to the demand for the development of thin and light products, the flat-type thin product is gradually introduced, and the finished light guide plate is longer than the thickness. Product, if the molding material directly uses the inlet and the gate to fill When the cavity is used, the finished product of the thinned light guide plate is less able to be obtained; and the flow speed of the molding material is different, as shown in the second figure (A), that is, the moving speed of the molding material near the middle of the cavity is faster than the two sides. Then, a waveform A is formed as shown in the figure, so that after the integral plate 2 is formed, an area as shown by the hatching is formed, that is, there is a short-shot phenomenon; and as shown in the second figure (B), it is another Short-sight phenomenon Y is ^ 6 M323982 = nuclear eight: the flow rate of the molding material is higher than the area shown in the two, so that 1 ^: after the formation of the first plate 2 'will form a light guide plate as the profile line is transmitted with unevenness Appearance. [New content] In view of this, this work is to provide a guide plate with a deformed channel to ensure that the cavity is filled and the short-shot phenomenon is formed by the deformation channel. In order to achieve the above (4) 'the molding die of the present invention, the movable mold is fixed, and the mold is fixed in the movable mold and the fixed mold. When the movable mold and the fixed mold a plate are formed, a cavity is formed between the two molds, and The movable mold and the solid reliance have a material D and secret that can lead to the cavity, Wei Dao An enlarged area is formed on the side of the cavity toward the cavity; wherein the expansion portion is recessed with at least one deformation channel, and the deformation channel is shaped as a flash space for the human body, and the mold can be adjusted. The speed of the person in the hole is used to solve the problem of insufficient filling of the cavity and short shot. [Embodiment] The molding apparatus of the "light guide plate" has a molding die structure as shown in the third figure, and the molding die 1 is also provided with a movable die, a fixed die 12, and a movable die 11 and a fixed die 12. In the mold core 13, when the movable mold and the mold 12 are clamped, a mold hole 15 is formed between the two mold cores 13, and the movable mold 11 and the fixed mold 12 are provided with a mold hole 15 The inlet port 16 and the runner 17 are filled with a molding material from the 7 M323982 inlet port 16.
本創作之重點在於：該澆道17係由入料口 16朝模穴15 一側形成面積漸大之擴張部171，且該擴張部171並凹設有 至少一變形槽道18，請同時參閱第四圖之第一實施例所 示，該變形槽道18係同時於擴張部171表面及朝可動模“ 内部設有相對之上、下邊側組18卜182，各邊側組係朝模 穴15之長邊方向151延伸，而上邊侧組181係包含有兩個同 向形成凸出之第一、二凸出上邊側18Π、1812,而該第一、 二凸出上邊側1811、1812係朝向入料口 16 —側形成凸出， 此實施例結構係用於成型材料於靠近模穴中間處之流動 速度較兩側為慢時，經由該變形槽道所形成之溢留空間， 可預先補正成型材料進入模穴之流動速度，使其流動速度 較為一致，以解決模穴充填不足、短射現象，且利用澆道 所形成之擴大部，使成型材料入料範圍較寬，而有利於成 型;4形導光板之產品；當然’該變形槽道18亦可由擴張部 171朝固疋模12内部凹入設置，如第五圖之第二實施例所 示。 如第六圖之第三實施例所示，係用於成型材料於靠近 模穴中間處之流動速度較兩側為快，該變形槽道18係同樣 設有相對之上、下邊側組181、182，其上邊側組181係包 含有兩個同向形成凸出之第一、二凸出上邊側、 1812,而該第一、二凸出上邊側1811、1812係朝向模穴15 一側形成凸出。 如第七圖（A)之第四實施例所示，係用於成型材料於 8 M323982 處之流動速度較兩側為快，該變形槽道18 二=有相對之上、下邊側組ι8ΐ、ΐ82，該上邊側組⑻ 凸出之第1出上邊側1811，以及-第-:16 Γ 而該第—凸出上邊侧1811係較靠近入料The focus of the present invention is that the sprue 17 forms an enlarged portion 171 having an enlarged area from the inlet port 16 toward the cavity 15 side, and the expansion portion 171 is recessed with at least one deformation groove 18, please also refer to As shown in the first embodiment of the fourth figure, the deformation channel 18 is simultaneously provided on the surface of the expansion portion 171 and the movable mold "with the upper side and the lower side group 18 182, and the side groups are facing the cavity. The longitudinal direction 151 of the 15 extends, and the upper side group 181 includes two first and second convex upper sides 18Π, 1812 which are convex in the same direction, and the first and second convex upper sides 1811 and 1812 are attached. The protrusion is formed toward the side of the inlet port 16 . The structure of this embodiment is used for the overflow space formed by the deformation channel when the flow velocity of the molding material near the middle of the cavity is slower than the two sides. Correcting the flow velocity of the molding material into the cavity, so that the flow velocity is relatively uniform, to solve the problem of insufficient cavity filling and short shot, and using the enlarged portion formed by the runner to make the molding material have a wide feeding range, which is beneficial to Molding; product of 4-shaped light guide plate; of course 'the deformation The passage 18 can also be recessed from the expansion portion 171 toward the inside of the solid mold 12, as shown in the second embodiment of the fifth figure. As shown in the third embodiment of the sixth figure, the molding material is used to close the mold cavity. The flow velocity in the middle portion is faster than the two sides, and the deformation channel 18 is also provided with the upper and lower side groups 181 and 182, and the upper side group 181 includes two first faces that are convex in the same direction. The upper side, 1812, protrudes from the upper side 1812, and the first and second convex upper sides 1811, 1812 are convex toward the side of the cavity 15. As shown in the fourth embodiment of the seventh figure (A), The flow rate of the molding material at 8 M323982 is faster than that of the two sides. The deformation channel 18=the upper side, the lower side group ι8ΐ, ΐ82, the upper side group (8) protrudes from the first upper side 1811, and -第:16 Γ and the first-protrusion upper side 1811 is closer to the feed
入，—侧形成凸出;當然，該第--側形成凸屮U亦：遂離入料口 16一侧，而朝向入料口 16 示中第—’如h®(B)所示；再者’第四實施例所 二 出上邊侧1811，亦可如第八圖（A)、（B)之第五 貫施例所示，朝向掇々y n τ 乐五 料於靠近卜形成出’則可用於成型材 拉八中間處之流動逮度較兩側為慢，另外，該第 ,:上邊侧1811凸出的形式可如圖所示為弧狀’亦可以 如多邊型，如第八圖（C)所示。Inwardly, the side is formed to be convex; of course, the first side forming the convex U is also: the side is separated from the side of the inlet 16 and is directed toward the inlet 16 as shown in the figure - ' as h® (B); Furthermore, the upper side 1811 of the fourth embodiment can also be formed as shown in the fifth embodiment of the eighth figure (A) and (B), facing the 掇々yn τ. Then, the flow catching force in the middle of the forming material can be slower than the two sides. In addition, the upper side 1811 can be convex in the form of an arc as shown in the figure, or can be a polygonal type, such as the eighth. Figure (C) shows.
土、^第九圖（Α)之第六實施例所示，係用於成型材料於 罪中間處之流動速度較兩側為慢，該變幵)槽道18 係同時於擴張部171表面及内部設有上、下邊侧組18卜 182 ’各邊侧組係朝模穴15之長邊方向151延伸，該上邊側 組181包含有兩個第一、二平直上邊側1813、1814，而下 邊側組182則包含有兩個同向形成凸出之第一、二凸出下 邊側1821、1822，該第一、二凸出下邊側1821、1822係朝 上方形成凸出；當然，該第一、二凸出下邊側1821、1822 亦可朝下方形成凸出，如第九圖（B)所示，則可用於成型 材料於靠近模穴中間處之流動速度較兩側為快。 如第十圖（A)之第七實施例所示，係用於成型材料於 靠近模穴中間處之流動速度較兩側為慢，該上邊侧組181 9 M323982 •包含有—形成凸出之第—凸出上邊側1811，以及-第-平 直上邊側1813,該第—凸出上邊侧1811係朝人料口 16一側 二成凸出而下邊側組182則包含有兩個同向形成凸出之 第一、二凸出下邊側1821、1822，該第一、二凸出下邊側 1821、1822係朝上方形成凸A ;當然，該第一凸出上邊側 丨811可以如圖所示較為遠離入料口 16—側，亦可如第十圖 (Β)所不，該第一凸出上邊側“丨丨較為靠近入料口丨6一 ⑩：則’再者’该第七實施例中之第一平直上邊側亦可形成如 第一凸出上邊側同向之凸出第二凸出上邊侧。 、a如第十一圖（Α)之第八實施例所示，係用於成型材料 於罪近模八中間處之流動速度較兩側為快，該上邊側組 包含有一形成凸出之第一凸出上邊側1811，以及一第 平直上邊側1813，該第一凸出上邊側1811係朝模穴15 一側形成凸出，而下邊側組182則包含有兩個同向形成凸 出之第一、二凸出下邊側1821、1822,該第一、二凸出下 謇邊側182卜1822係朝下方形成凸出；#然，該第一凸出上 邊側1811可以如圖所示較為遠離入料口 16一侧，亦可如第 十一圖（Β)所示，該第一凸出上邊側1811較為靠近入料口 16一，；再者，該第八實施例中之第一平直上邊侧亦可形 成如第一凸出上邊側同向之凸出第二凸出上邊侧。 、+如第十二圖之第九實施例所示，係用於成型材料於靠 近权八中間處之流動速度較兩側為快，該擴張部17丨凹設 有一變形槽道18,該變形槽道18係正對入料口 16之位置設 置该變形槽這18係同時於擴張部pi表面及内部設有相 M323982 對之上、下邊側組181、182，該上邊侧組181係包含有兩 個反向形成凸出之第一、二凸出上邊側1811、1812,該第 一凸出上邊側1811係朝向入料口 16 —側，而第二凸出上邊 側1812則朝向模穴15—侧；另外，可利用第八實施例所示 中之二個分開之變形槽道18凹設於擴張部171，如第十三 圖所示，各變形槽道18係非正對入料口 16之位置設置，則 用於成型材料於靠近模穴中間處之流動速度較兩側為慢。 當然，上述各實施例中之變形槽道亦可與擴張部之外 型相符’如第十四圖（A)之第十一實施例所示，係用於成 型材料於靠近模穴中間處之流動速度較兩側為慢，該變形 槽道18係與擴張部171之外型相符，並同時於擴張部171 表面及内部設有上、下邊側組181、182，該上邊側組181 包含有兩個第一、二平直上邊侧1813、1814，而下邊側組 182則包含有兩個同向形成凸出之第一、二凸出下邊側 1821、1822，該第一、二凸出下邊側1821、1822係朝上方 形成凸出；當然，該第一、二凸出下邊側以?^、！822亦可 朝下方形成凸出，如第十四圖（B)所示，則可用於成型材 料於靠近模穴中間處之流動速度較兩側為快。 如上所述，本創作提供導光板另一較佳可行的成型裝 置，爰依法提呈新型專利之申請；惟，以上之實施說明及 圖式所示，係本創作較佳實施例者，並非以此侷限本創 作，疋以，舉凡與本創作之構造、裝置、特徵等近似、雷 同者’均應屬本創作之創設目的及申請專利範圍之内。 M323982 【圖式簡單說明】 第一圖（A)、（B)係為習用導光板成型裝置之結構示意圖。 第一圖（C)係為習用導光板之結構示意圖。 第二圖（A)、（B)係為習用成型裝置注入成型材料之結構示 意圖。 第三圖係為本創作中導光板成型裝置之結構示意圖。 第四圖係為本創作中變形槽道第一實施例之結構立體圖。 第五圖係為本創作中變形槽道第二實施例之結構立體圖。 第六圖係為本創作中變形槽道第三實施例之結構立體圖。 第七圖（A)、（B)係為本創作中變形槽道第四實施例之結構 立體圖。 第八圖（A)、（B)、（C)係為本創作中變形槽道第五實施例 之結構立體圖。 第九圖（A)、（B)係為本創作中變形槽道第六實施例之結構 立體圖。 弟十圖（A )、（ B)係為本創作中變形槽道第七實施例之結構 立體圖。 弟十圖（A )、（ B)係為本創作中變形槽道第八實施例之結 構立體圖。 ^ 第十二圖係為本創作中變形槽道第九實施例之結構立 圖。 第十三圖係為本創作中變形槽道第十實施例之結構立體 圖。 第十四圖（A)、（B)係為本創作中變形槽道第十一實施例之 12 M323982 結構立體圖。 【元件代表符號說明】 波形A 波形B 成型模具1 可動模11 固定模12 模仁13 模穴15 入料口 16 澆道17 擴張部171 變形槽道18 上邊側組181 第一凸出上邊侧1811 第二凸出上邊侧1812 第一平直上邊側1813 第二平直上邊側1814 下邊侧組182 第一凸出下邊側18 21 第二凸出下邊側1822 導光板2In the sixth embodiment of the soil, the ninth figure (Α), the flow rate of the molding material in the middle of the sin is slower than the two sides, and the groove 18 is simultaneously on the surface of the expansion portion 171 and The upper and lower side groups 18 182 ′ each of the side groups extend toward the longitudinal direction 151 of the cavity 15 , and the upper side group 181 includes two first and second straight upper sides 1813 and 1814. The lower side group 182 includes two first and second convex lower sides 1821 and 1822 which are convex in the same direction, and the first and second convex lower sides 1821 and 1822 are convex upwards; of course, the first The first and second convex lower sides 1821, 1822 can also be convex toward the lower side. As shown in the ninth figure (B), the flow rate of the molding material near the middle of the cavity is faster than the two sides. As shown in the seventh embodiment of the tenth figure (A), the flow velocity of the molding material near the middle of the cavity is slower than the sides, and the upper side group 1819 M323982 includes - forming a convex First, the upper side 1811 and the first straight upper side 1813 are protruded from the side of the human mouth 16 and the lower side group 182 includes two in the same direction. Forming the first and second convex lower sides 1821, 1822, the first and second convex lower sides 1821, 1822 are formed with a convex A upward; of course, the first convex upper side 丨 811 can be as shown in the figure It is farther away from the inlet side 16 side, or as shown in the tenth figure (Β), the first convex upper side "丨丨 is closer to the inlet port 丨6-10: then 'the other' is the seventh The first straight upper side of the embodiment may also be formed such that the first convex upper side protrudes in the same direction as the second convex upper side. a, as shown in the eighth embodiment of the eleventh figure (Α), The flow rate of the molding material in the middle of the crime near the die is faster than the two sides, and the upper side group includes a first convex upper side 1811 forming a convex shape. And a first straight upper side 1813, the first convex upper side 1811 is convex toward the side of the cavity 15, and the lower side group 182 includes two first and second convex portions which are convexly formed in the same direction. The lower side 1821, 1822, the first and second protruding lower side sides 182, 1822 are formed to protrude downward; #然, the first convex upper side 1811 can be further away from the inlet 16 as shown On the side, as shown in FIG. 11 (Β), the first convex upper side 1811 is closer to the inlet 16 , and the first straight upper side of the eighth embodiment may also be Forming the second convex upper side in the same direction as the first convex upper side. +, as shown in the ninth embodiment of the twelfth embodiment, is used for the flow velocity of the molding material near the middle of the weight eight The two sides are fast, and the expansion portion 17 is recessed and provided with a deformation channel 18, and the deformation channel 18 is provided with the deformation groove at the position of the inlet port 16. The 18-series are simultaneously provided on the surface and inside of the expansion portion pi. M323982 pairs upper and lower side groups 181, 182, the upper side group 181 includes two oppositely formed first and second convex upper sides Sides 1811, 1812, the first convex upper side 1811 is oriented toward the inlet 16 side, and the second convex upper side 1812 is facing the cavity 15 side; in addition, the eighth embodiment can be utilized Two separate deformation channels 18 are recessed in the expansion portion 171. As shown in Fig. 13, each deformation channel 18 is disposed at a position opposite to the inlet port 16 for molding the material in the middle of the cavity. The flow speed is slower than the two sides. Of course, the deformation channel in each of the above embodiments may also conform to the shape of the expansion portion, as shown in the eleventh embodiment of the fourteenth (A). The flow velocity of the molding material near the middle of the cavity is slower than that of the two sides. The deformation channel 18 conforms to the shape of the expansion portion 171, and at the same time, the upper and lower side groups 181 are provided on the surface and inside of the expansion portion 171. 182, the upper side group 181 includes two first and second straight upper sides 1813, 1814, and the lower side group 182 includes two first and second convex lower sides 1821 which are convexly formed in the same direction. 1822, the first and second protruding lower sides 1821, 1822 are formed to protrude upward; of course, the first, Protruding to the lower side? ^ ,! The 822 can also be formed to protrude downward, as shown in Fig. 14(B), and the flow rate of the molding material near the center of the cavity is faster than the sides. As described above, the present invention provides another preferred and feasible molding device for the light guide plate, and the application for a new patent is filed according to the law; however, the above embodiments and drawings show that the preferred embodiment of the present invention is not This limitation of this creation, 疋 , 举 举 举 举 举 举 举 举 举 举 举 举 举 举 本 本 本 近似 近似 近似 。 。 近似 。 。 。 近似 。 。 。 。 。 。 。 。 。 。 。 M323982 [Simple description of the drawings] The first diagrams (A) and (B) are schematic diagrams of the conventional light guide plate forming apparatus. The first figure (C) is a schematic structural view of a conventional light guide plate. The second figures (A) and (B) are schematic views of the structure in which the molding material is injected into the molding apparatus. The third figure is a schematic structural view of the light guide plate forming device in the present creation. The fourth figure is a perspective view of the structure of the first embodiment of the deformation channel in the present creation. The fifth figure is a perspective view of the structure of the second embodiment of the deformation channel in the present creation. The sixth figure is a perspective view of the structure of the third embodiment of the deformation channel in the present creation. The seventh diagrams (A) and (B) are perspective views of the structure of the fourth embodiment of the deformation groove in the creation. The eighth diagrams (A), (B), and (C) are perspective views of the fifth embodiment of the deformation groove in the creation. The ninth drawings (A) and (B) are perspective views of the structure of the sixth embodiment of the deformation groove in the present creation. Fig. 10 (A) and (B) are perspective views showing the structure of the seventh embodiment of the deformation groove in the creation. Fig. 10 (A) and (B) are perspective views of the structure of the eighth embodiment of the deformation groove in the creation. ^ The twelfth figure is a structural diagram of the ninth embodiment of the deformation channel in the present creation. The thirteenth drawing is a perspective view showing the structure of the tenth embodiment of the deformation groove in the creation. Fig. 14 (A) and (B) are perspective views of the structure of the 12 M323982 of the eleventh embodiment of the deformation groove in the creation. [Description of component symbol] Waveform A Waveform B Molding die 1 Movable die 11 Fixing die 12 Molding die 13 Molding hole 15 Feeding port 16 Sprue 17 Expansion section 171 Deformation channel 18 Upper side group 181 First convex upper side 1811 Second convex upper side 1812 First straight upper side 1813 Second straight upper side 1814 Lower side group 182 First convex lower side 18 21 Second convex lower side 1822 Light guide plate 2