588298 A7 B7 五、發明說明（i ) [發明之背景] [技術領域] 本發明係關於於查禮甚- (請先閱讀背面之注意事項再填寫本頁) 旦像顯不裝置及適用於該畫像顯示 置之面光源裝置，例如· π从成★ y ^ . 例如·可使用在行動電話、電子記 等晝像顯示裝置，或通用於兮者漁甜—壯祖 W / 夂週用於该晝像顯不裝置所使用之面光 源裝置上。 [習知之技術] 例如使用作為行動電話的晝像顯示装置之液晶顯示 裝置，係作成為將液晶顯示面板作為被照明構件，以來自 背面側的面光源裝置之輸出光照明之構造。 第10圖為舉例說明該型的以往液晶顯示裝置之圖。 液晶顯示裝置101之構成係將液晶顯示面板1〇7組裳於面 光源裝置108。面光源裝置108具備導光板1〇2、螢光燈1〇4、 反射體106。螢光燈1〇4作為一次光源而配置於導光板ι〇2 的背面103側，而將該螢光燈1 〇4的光供給於導光板丨〇2。 經濟部智慧財產局員工消費合作社印製 螢光燈104的光，首先朝向形成於導光板1〇2的緣部 之傾斜面1 05投射，於此反射使光路直角曲折，而被傳送 到導光板102内。為了防止漏光，補強反射，在該傾斜面 105上設置反射體106。 如此構成的液晶顯示裝置1〇1，與將螢光燈104配置 於導光板1 02側面之情形相比’可容易的使螢光燈1 04與 液晶顯示面板107的間隔變大。因此，螢光燈1 04的熱不 容易傳送至液晶顯示面板107，而可抑制因液晶顯示面板 107的溫度上昇而產生的液晶顯示面板107顏色的不均之 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 x 297公釐） 1 312981 588298588298 A7 B7 V. Description of the invention (i) [Background of the invention] [Technical field] The present invention is about Zha Lishi-(Please read the precautions on the back before filling this page) A surface light source device for portrait display, for example, π 从 成 ★ y ^. For example, · It can be used in day-to-day image display devices such as mobile phones, electronic notebooks, etc. The daylight display device is used on the surface light source device. [Conventional technology] For example, a liquid crystal display device using a daylight image display device as a mobile phone has a structure in which a liquid crystal display panel is used as an illuminated member and illuminated by output light from a surface light source device on the back side. FIG. 10 is a diagram illustrating a conventional liquid crystal display device of this type. The structure of the liquid crystal display device 101 is a group of 107 liquid crystal display panels on a surface light source device 108. The surface light source device 108 includes a light guide plate 102, a fluorescent lamp 104, and a reflector 106. The fluorescent lamp 104 is arranged on the back 103 side of the light guide plate ι02 as a primary light source, and the light of the fluorescent lamp 104 is supplied to the light guide plate 〇2. The light of the fluorescent lamp 104 printed by the employee's consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is first projected toward the inclined surface 105 formed at the edge of the light guide plate 102, where the reflection causes the light path to bend at right angles and is transmitted to the light guide plate. Within 102. In order to prevent light leakage and enhance reflection, a reflector 106 is provided on the inclined surface 105. The liquid crystal display device 101 configured as described above can easily increase the distance between the fluorescent lamp 104 and the liquid crystal display panel 107 compared to the case where the fluorescent lamp 104 is disposed on the side of the light guide plate 102. Therefore, the heat of the fluorescent lamp 104 cannot be easily transmitted to the liquid crystal display panel 107, and the color unevenness of the liquid crystal display panel 107 caused by the temperature rise of the liquid crystal display panel 107 can be suppressed. ) A4 size (21 × 297 mm) 1 312981 588298
五、發明說明（2 ) 經濟部智慧財產局員工消費合作社印製 情形（參照特開平4-355428號公報）。 然而如此之架構所使用的導光板1〇2非常的薄，其厚 度八有如· 1 · 〇〇mm至1 5mm左右。因此，傾斜面1Q5的 寬度變成非常狹小（細長）。在反射板1〇6上，通常使用光 反射膜，並以黏著將其固定於寬度狹窄的傾斜面1〇5上。 此時’需要配合寬度非常狹小的傾斜面1 〇5切斷光反 射膜’並將切斷的光反射膜片黏著於傾斜面1〇5之作業。 該作業具有困難度，而會增加液晶顯示裝置101的製造成 本。然而，由於光反射膜106的黏結面積狹小，故容易由 傾斜面105剝落。即使只有部分的光反射膜丨〇6由傾斜面 1〇5剝落，光也會由該部分漏出導光板1〇2的外部。結果， 導致光利用效率的低下，而減低亮度。 [發明之目的概要] 於是’本發明之目的係在解決以往技術的問題點。 本發明乃為使顯示裝置及面光源裝置設置於導光板 的光路曲折用的傾斜面上之反射體的固定黏著更加安定而 改良者。此外，使製造步驟比以往更容易。 本發明所適用的畫像顯示裝置具備導光板、和配置於 該導光板背面側之光源、及配置於出射面側之被照明構 件。於此，於前述導光板上形成傾斜面，使前述光源所供 給的光由前述導光板的緣部反射至前述導光板的内部侧； 沿著前述傾斜面，配置反射構件。 根據本發明之改良，反射構件具有黏結固定於前述導 光板與前述被照明構件之任一個之第〗部分、和黏結固* -----------裝--------訂--------- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 297公釐） 2 312981 588298 經濟部智慧財產局員工消費合作社印製 A7 _____________ 五、發明說明（3 ) — 於傾斜面之第2部分。而且’在前述反射構件與被照明 件之間，配置將反射構件的第2部分麵於傾斜面之彈性 體。於此’配置於反射構件與被照明構件之間的構件，也 可以是將反射構件的第2部分推壓於傾斜面之填充材。 此外’本發明所適用的面光源裝置，具備導光板、和 配置於該導光板背面側之光源；由前述導光板的出射面， 朝向配置於前述出射面側之被照明構件，而輸出輪出光。 於此’於導光板形成使光源所供給的光由導光板的緣部反 射至導光板的内部側之傾斜面，沿著該傾斜面配置反射構 件。 根據本發明之改良，反射構件具有黏結固定於導光板 的出射面的第1部分、和密貼於傾斜面的第2部分。而且， 在反射構件的第2部分外側表面側上，固定彈性體；在導 光板的出射面上配置前述被照明側構件時，彈性體由被照 明構件推壓，所以反射構件的第2部分被該彈性體的彈= 力推壓於前述傾斜面。 [發明之實施型態] 以下，參照圖面詳細說明本發明之實施型態。尚且， 為了易於理解，依需要將一部份的圖示予以放大。 (1)第1實施型態 第1圖至第3圖為說明關於本發明第i實施形態的畫 像顯示裝置之圖。第1圖係以分解斜視圖表示畫像顯示裝 置1 ’第2圖為在將作為被照明構件之液晶顯示面板3組 襄於面光源裝置2前之狀態，係以沿著第1圖的線a_a的 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公餐） 3 312981V. Description of the invention (2) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (refer to Japanese Unexamined Patent Publication No. 4-355428). However, the light guide plate 102 used in such a structure is very thin, and its thickness is as much as about 1.00 mm to about 15 mm. Therefore, the width of the inclined surface 1Q5 becomes very narrow (slender). On the reflecting plate 106, a light reflecting film is usually used, and it is fixed to the narrow inclined surface 105 with an adhesive. In this case, the operation of “cutting the light reflecting film with a very narrow width of the inclined surface 105” and adhering the cut light reflecting film to the inclined surface 105 is required. This operation is difficult, which increases the manufacturing cost of the liquid crystal display device 101. However, since the bonding area of the light reflecting film 106 is narrow, it is easy to peel off the inclined surface 105. Even if only a part of the light reflecting film 〇06 is peeled off by the inclined surface 105, light will leak out of the light guide plate 102 from this part. As a result, the light utilization efficiency is lowered and the brightness is reduced. [Summary of the purpose of the invention] Then, the purpose of the present invention is to solve the problems of the conventional technology. The present invention is to improve and stabilize the fixation and adhesion of the reflectors provided on the inclined surface for the light path of the light guide plate in which the display device and the surface light source device are set. In addition, manufacturing steps are easier than ever. An image display device to which the present invention is applied includes a light guide plate, a light source disposed on the back side of the light guide plate, and an illuminated member disposed on the emission surface side. Here, an inclined surface is formed on the light guide plate, so that the light supplied by the light source is reflected from the edge of the light guide plate to the inner side of the light guide plate; and a reflecting member is arranged along the inclined surface. According to the improvement of the present invention, the reflecting member has the first part bonded and fixed to any one of the light guide plate and the member to be illuminated, and the bonded part * ----------- install ------ --Order --------- (Please read the notes on the back before filling in this page) This paper size is applicable to China National Standard (CNS) A4 (21〇297 mm) 2 312981 588298 Wisdom of the Ministry of Economic Affairs Printed by A7 Consumer Property Cooperatives of Property Bureau _____________ 5. Description of Invention (3) — Part 2 on the inclined surface. Further, an elastic body having a second portion of the reflecting member on the inclined surface is arranged between the reflecting member and the object to be illuminated. Here, the member disposed between the reflecting member and the member to be illuminated may be a filler that pushes the second part of the reflecting member against the inclined surface. In addition, a surface light source device to which the present invention is applied includes a light guide plate and a light source disposed on a back side of the light guide plate; an output surface of the light guide plate faces an illuminated member disposed on the output surface side, and an output wheel emits light. . Here, an inclined surface is formed on the light guide plate so that the light supplied from the light source is reflected from the edge of the light guide plate to the inner side of the light guide plate, and a reflecting member is arranged along the inclined surface. According to an improvement of the present invention, the reflecting member has a first portion bonded to the light-emitting plate's exit surface and a second portion closely adhered to the inclined surface. Furthermore, an elastic body is fixed on the outer surface side of the second part of the reflecting member. When the illuminated side member is arranged on the exit surface of the light guide plate, the elastic body is pressed by the illuminated member, so the second part of the reflecting member is The elastic force of the elastic body is pressed against the inclined surface. [Embodiments of the invention] Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. Moreover, for easy understanding, a part of the illustrations are enlarged as needed. (1) First embodiment Figs. 1 to 3 are diagrams illustrating an image display device according to an i-th embodiment of the present invention. Fig. 1 is an exploded perspective view showing the image display device 1 'Fig. 2 is a state before the liquid crystal display panel 3 which is a member to be illuminated is brought to the surface light source device 2, and is shown along line a_a of Fig. 1 This paper size applies to Chinese National Standard (CNS) A4 (210 x 297 meals) 3 312981
裝 訂---------_ (請先閱讀背面之注音？事項再填寫本頁) 經濟部智慧財產局員工消費合作社印制衣 588298 五、發明說明（4 ) 剖視圖來表示。此外’第3圖為表示將液晶顯示面板3組 裝於面光源裝置2而構成畫像顯示裝置1的一部份之剖視 圖。 口 如攻些圖所示，面光源裝置2具備：導光板4、固定 於導光板4出射面5的兩端部之-對反射構件6、6,以對 應於導光板4的背面7側的四個隅角之方式所配置的作為 一次光源的發光二極體（LED)8。而且，相對於出射面5配 置液晶顯不面板3，以構成畫像顯示裝置1。 導光板4係以PC(聚碳酸脂）、PMMA(丙稀基樹脂）、 環稀烴類樹脂等透明材料構成，為矩形，整體上其厚度大 致相等。 導光板4係如第4圖至第5圖中所表示的詳細結構， 將四個隅角切成傾斜面，且該切成傾斜面的形狀部分（側面 部）1〇，形成傾斜之傾斜面u。該傾斜面u的傾斜角度0 係選擇成：使自LED 8發出的光產生内部反射，而形成豐 富的朝向與出射面5平行的方向進行之光成分。 尚且，本實施形態中，發自LED 8的光以與導光板4 的出射面5直交之方式，入射至導光板4。因此，傾斜面 11的傾斜角（9約為45度。反射構件6係以具有PET(聚乙 烯反射板）等光反射性佳的膜形成，在相對於導光板4的面 上以沈積方式鍍銀。在鍍銀面上塗上黏結材。 於此，重要條件為反射構件6具有黏結固定於出射面 5的第1部分6a、和黏結固定於傾斜面的第2部分6b。為 了使第1部分6a確實的黏結固定於出射面11，以黏結面 裝--------訂--------- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 4 312981 588298 A7 B7 —_ 五、發明說明（5 ) 積明顯比第2部分6b還大為佳。 另一方面’反射構件6的第2部分6b係在以沿著導 光板4的形狀之方式而曲折的狀態下黏結於傾斜面^。然 而，由於與傾斜面Π的黏結面積很小而报不容易得到足= 的黏結強《，故容易因反射構件6的復原力而由傾斜面剝 落（參照圖2)。於此，本實施形態中則在相對於第2部分 6b的液晶顯示面板3的面（非黏結面）上黏著彈性材12/該 彈性體12被組裝於面光源裝置2的液晶顯示面板3壓住， 所以可將第2部分6b推壓於傾斜面11。 如此’可防止使用畫像顯示裝置丨時第2部分6b由 傾斜面11剝落。又，第1部分化在兩端部故自具有舌片 6c，以達到傾斜面11旁邊的黏結面積之增大。藉此。可提 高反射構件6對導光板4的黏結強度，第2部分6b的剝落 較不容易產生。 經濟部智慧財產局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 4· 尚且，本實施形態中，彈性體12係採用略三角錐狀 的結構。然而，此僅為其中一例，倘若可推壓於液晶顯示 面板3，使第2部分6b密貼於傾斜面n，則該形狀並無特 別的限制。例如：也可採用三腳柱狀、半球狀等的彈性體。 此外’以彈性體12的材料而言，可以是例如：聚氨基甲酸 醋泡沫體（polyurthane foam)、發泡聚烯烴（p〇iyolefin)、發 泡橡膠等，一般只要可以將第2部分6b推壓於傾斜面i i 即可，並無特別的材料限制。 然而，若考慮到造成液晶顯示面板3或導光板4等其 他構件的負荷，則以海綿（sponge)狀的軟質泡沫為佳。在 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 5 312981 588298 五、發明說明（6 ) 導光板4的旁面7侧且與導光板4的傾斜面丨丨相對應的位 置上’換S之’在與背面7側的四個隅角部相對應的位置 上，各自配置LED 8。 LED 8係在與出射面5垂直的方向上出射光之形態下 配置。又，背面7侧上，酉己置由光反射性佳的pET等樹脂 板所構成的反射板13。而且，在反射板13的四個隅角部 上，各自形成可使發自LED 8的光通過之缺口部14。如此 的反射板13將由背面7所漏出的光予以反射，並返回導光 板4内部。 尚且，在背面7側上配置光反射性佳的框架面板（參照 第9圖），可以在該反射面板將由背面7側出射的光予以反 射之時，可省略前述反射板13。 在如前述所構成的畫像顯示裝置丨中，點亮led8, 則大部分的光入射至導光板4的内部之後，在傾斜面u 或黏著於同傾斜面11之反射構件6上反射，將光之行進方 向轉換成與出射面5大致平行之方向，而於導光板4的内 部傳播。 經濟部智慧財產局員工消費合作社印製 於導光板4内部傳播的光，賦予向出射面5内部入射 的機會。如眾所週知，向出射面5内部入射時，入射角為 臨界角以下的光成分的大部分會由出射面5逸出外部。藉 由由導光板4的四個隅角供給光，則將使自出射面5的= 射平均，使亮度均一化。如此，以來自出射面5的出射光 均勻的照明液晶顯示面板3，可達成優良品質之顯示。 如以上說明，本實施形態之畫像顯示裳置 且1，其反射 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 312981 (請先閱讀背面之注意事項再填寫本頁) 588298Binding ---------_ (Please read the note on the back? Matters before filling out this page) Printed clothing by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 588298 5. Description of the invention (4) Sectional view to show. In addition, FIG. 3 is a cross-sectional view showing a part of the image display device 1 in which the liquid crystal display panel 3 is mounted on the surface light source device 2. As shown in the drawings, the surface light source device 2 includes a light guide plate 4 and two reflecting members 6 and 6 fixed to the two ends of the light guide plate 4 exit surface 5 so as to correspond to the rear surface 7 side of the light guide plate 4. A light emitting diode (LED) 8 as a primary light source arranged in a manner of four corners. A liquid crystal display panel 3 is arranged on the emission surface 5 to form an image display device 1. The light guide plate 4 is made of transparent materials such as PC (polycarbonate), PMMA (acrylic resin), and cycloolefin resin. The light guide plate 4 is rectangular in shape and has a substantially equal thickness as a whole. The light guide plate 4 has a detailed structure as shown in FIGS. 4 to 5. The four corners are cut into an inclined surface, and the shape portion (side surface portion) of the inclined surface is cut to form an inclined inclined surface. u. The inclination angle 0 of the inclined surface u is selected to cause internal reflection of the light emitted from the LED 8 to form a rich light component that goes in a direction parallel to the exit surface 5. Furthermore, in this embodiment, the light emitted from the LED 8 is incident on the light guide plate 4 so as to be orthogonal to the exit surface 5 of the light guide plate 4. Therefore, the inclination angle of the inclined surface 11 (9 is about 45 degrees. The reflecting member 6 is formed of a film having excellent light reflectivity such as PET (polyethylene reflective plate), and is plated on the surface facing the light guide plate 4 by deposition Silver. Apply a bonding material to the silver-plated surface. Here, the important condition is that the reflective member 6 has a first portion 6a bonded and fixed to the exit surface 5 and a second portion 6b bonded and fixed to the inclined surface. In order to make the first portion 6a The fixed adhesive is fixed on the exit surface 11 and the adhesive surface is installed -------- Order --------- (Please read the precautions on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 4 312981 588298 A7 B7 —_ 5. Description of the invention (5) The product is obviously larger than Part 6b. On the other hand, the second part of the reflection member 6 The part 6b is adhered to the inclined surface in a state of being tortuous along the shape of the light guide plate 4. However, since the adhesion area with the inclined surface Π is small, it is not easy to obtain a strong adhesion of the foot =, so It is easy to peel off from the inclined surface due to the restoring force of the reflecting member 6 (see FIG. 2). Here, this embodiment Then, an elastic material 12 is adhered to the surface (non-adhesive surface) of the liquid crystal display panel 3 opposite to the second portion 6b. The elastic body 12 is pressed by the liquid crystal display panel 3 assembled to the surface light source device 2. Therefore, the second The portion 6b is pressed against the inclined surface 11. In this way, the second portion 6b can be prevented from being peeled off by the inclined surface 11 when the image display device is used. In addition, the first portion is provided with the tongue piece 6c at both ends to achieve the inclined surface. The increase in the bonding area next to 11. This can improve the bonding strength of the reflective member 6 to the light guide plate 4, and the peeling of part 6b is less likely to occur. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (please read first Note on the back page, please fill out this page again) 4. In addition, in this embodiment, the elastic body 12 has a slightly triangular pyramid structure. However, this is only one example. If it can be pushed on the liquid crystal display panel 3, the first The two parts 6b are closely adhered to the inclined surface n, and there is no particular limitation on the shape. For example, a tripod-shaped, hemispherical, or other elastic body may be used. In addition, the material of the elastic body 12 may be, for example, : Polyurethane foam (Polyurthane foam), foamed polyolefin (poly-olefin), foamed rubber, etc. Generally, as long as the second part 6b can be pushed against the inclined surface ii, there are no special material restrictions. However, if the The load of other components such as the liquid crystal display panel 3 or the light guide plate 4 is preferably a sponge-like soft foam. In this paper scale, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) applies 5 312981 588298 V. Description of the invention (6) The side of the light guide plate 4 on the side 7 and the position corresponding to the inclined surface 丨 丨 of the light guide plate 4 'Change S' at the position corresponding to the four corners on the back 7 side , Each configured with LED 8. The LED 8 is arranged in a form that emits light in a direction perpendicular to the emitting surface 5. On the back surface 7 side, a reflecting plate 13 made of a resin plate such as pET having excellent light reflectivity is disposed. Furthermore, notch portions 14 are formed in the four corner portions of the reflecting plate 13 to allow light emitted from the LED 8 to pass through. Such a reflection plate 13 reflects the light leaked from the back surface 7 and returns to the inside of the light guide plate 4. In addition, a frame panel (see FIG. 9) having excellent light reflectivity is disposed on the back surface 7 side, and the reflection panel 13 can be omitted when the reflection panel reflects light emitted from the back surface 7 side. In the image display device constructed as described above, when the led 8 is turned on, most of the light enters the inside of the light guide plate 4 and is reflected on the inclined surface u or the reflective member 6 adhered to the same inclined surface 11 to reflect the light. The traveling direction is converted into a direction substantially parallel to the exit surface 5 and propagates inside the light guide plate 4. The light propagated inside the light guide plate 4 by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs gives the opportunity to enter the exit surface 5. As is well known, when incident into the exit surface 5, most of the light components whose incident angle is below the critical angle escape from the exit surface 5 to the outside. By supplying light from the four corners of the light guide plate 4, the radiation from the exit surface 5 is averaged, and the brightness is uniformized. In this way, the liquid crystal display panel 3 is uniformly illuminated with the light emitted from the light emitting surface 5, and a display of excellent quality can be achieved. As explained above, the portrait of this embodiment shows the clothes and the reflection of this paper is in accordance with China National Standard (CNS) A4 (210 X 297 mm) 312981 (Please read the precautions on the back before filling this page) 588298
五、發明說明（7 ) 構件6具有黏結固定於出射面5的第j部分6a、和黏結固 定於傾斜面11的第2部分6b，又，在與第2部分6b的液 曰曰顯示面板3相對的面（非黏結面）上黏著有彈性體丨2。該 彈性體12被纟且裝於面光源裝置2的液晶顯示面板3壓住， 由此將第2部分6b壓住於傾斜面11。 因此，與以往例中，反射體106僅黏著固定於導光板 102的傾斜面105相比，可使反射構件6的黏著面積變大， 使反射構件6的黏結固定作業變容易。再者，畫像顯示裝 置1的製造步驟可比以往例簡單。也可避免因反射構件磨 損而導致照明低下之情況發生。 尚且，關於導光板4的傾斜面11形成數量、led 8 的設置數量並無特別的限制。一般係依導光板4的有效發 光面積或畫像顯示裝置1的組裝空間等設計條件，而做適 當的變更。 (2) ·第2實施型態 第6圖至第8圖係表示本發明第2實施形態之畫像顯 示裝置21。第6圖中，以分解斜視圖表示畫像顯示裝置21 ; 第7圖中，將作為被照明構件的液晶顯示面板23組裝於面 光源裝置22前之狀態，以沿著第6圖線C-C之剖視圖表 示。又，第8圖中，以剖視圖表示組裝液晶顯示面板23 於面光源裝置22，以構成畫像顯示裝置2 1的一部份。 本實施形態中，在導光板24的背面27側，配置作為 一次光源的螢光燈28，同時配置反射板33，將反射構件 26黏著固定在導光板24的出射面25側的一端部。螢光燈 (請先閱讀背面之注意事項再填寫本頁) --------訂---------说 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 7 312981 588298 B7V. Description of the invention (7) The component 6 has a j-th part 6a bonded and fixed to the exit surface 5 and a second part 6b bonded and fixed to the inclined surface 11, and the liquid crystal display panel 3 is in contact with the second part 6b. An elastic body is adhered to the opposite surface (non-adhesive surface) 2. The elastic body 12 is pressed against the liquid crystal display panel 3 mounted on the surface light source device 2, and thereby the second portion 6 b is pressed against the inclined surface 11. Therefore, compared with the conventional example, the reflector 106 is adhered and fixed only to the inclined surface 105 of the light guide plate 102, so that the adhesive area of the reflective member 6 can be made larger, and the adhesive fixing operation of the reflective member 6 can be made easier. In addition, the manufacturing process of the image display device 1 can be simpler than the conventional example. It is also possible to avoid low lighting caused by abrasion of reflective members. Moreover, there are no particular restrictions on the number of the inclined surfaces 11 formed in the light guide plate 4 and the number of the LEDs 8 provided. Generally, appropriate changes are made in accordance with design conditions such as the effective light-emitting area of the light guide plate 4 and the assembly space of the image display device 1. (2) Second embodiment Figs. 6 to 8 show an image display device 21 according to a second embodiment of the present invention. In FIG. 6, the portrait display device 21 is shown in an exploded perspective view. In FIG. 7, a state where the liquid crystal display panel 23 as an illuminated member is assembled in front of the surface light source device 22 is a cross-sectional view taken along line CC in FIG. 6. Means. In addition, in FIG. 8, the liquid crystal display panel 23 is assembled with the surface light source device 22 in a sectional view to form a part of the image display device 21. In this embodiment, a fluorescent lamp 28 as a primary light source is disposed on the back surface 27 side of the light guide plate 24, and a reflection plate 33 is disposed at the same time. The reflection member 26 is adhered and fixed to one end portion of the light guide plate 24 on the exit surface 25 side. Fluorescent lamp (please read the precautions on the back before filling this page) -------- Order --------- Said by the Intellectual Property Bureau of the Ministry of Economic Affairs Employee Cooperatives Printed on this paper Standards for China National Standard (CNS) A4 Specification (210 X 297 mm) 7 312981 588298 B7
五、發明說明（8 ) 28的配置位置在背面27 ^ ^ ^ ^ ^ ^ ^ ^ 詈，i一+备 隹”傾斜面31相對應的位 位置。“之，在與背面27的傾斜面31側的端部相對應的 (請先閱讀背面之注意事項再填寫本頁) 而且’液晶顯示面板23以對應於導光板24的出射面 山之方式*配置。導光板24以其—端部的厚度大於另一 端之方式形成’並沿著第6圖線cc的剖面形狀略呈楔 狀，且其平面形狀為矩形。該材料可採用PC、PMMA、環 稀烴類樹脂等。 在導光板24的一端部上，傾斜切下側面2钧以形成傾 斜面31。相對於該傾斜面31的出射面以之傾斜角度沒， 以發自螢光燈28之大部分的光朝向與導光板24的出射面 25平行的方向反射而傳遞之方式而設定。 反射構件26與第丨實施形態相同，係以白色pET等 光反射性佳的膜形成，在與導光板24相對的面上以沈積鍍 銀。在鍍銀面上塗上黏結材。 經濟部智慧財產局員工消費合作社印製 本實施形態之重要的特徵係：反射構件26具有黏結 固定在導光板24的出射面25第1部分26a、和與導光板 24的傾斜面31黏結固定的第2部分26b。反射構件％的 第1部分26a之黏結面積比第2部分26b還大，可確實地 黏結固定於導光板24的出射面25。 反射構件26的第2部分26b，係以沿著導光板24的 形狀之方式而曲折的狀態下黏結傾斜面31，然而，由於傾 斜面3 1的黏結面積很小，該第2部分26b容易因反射構件 26的復原力而由傾斜面3 1剝落（參照第7圖）。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 8 312981 588298 A7 B7 經 濟 部 智 慧 財 產 局 員 工 消 費 合 作 社 印 製 五、發明說明（9 ) 於是，本實施形態中，與前述第丨實施形態相同，在 與第2部分26b的液晶顯示面板23相對的面（非黏結面） 上黏者海綿、發泡橡膠等彈性體32。該彈性體32被組裝 於面光源裝置22的液晶顯示面板23壓住，以該彈性體32 將第2部分26b推壓於傾斜面31。尚且，本實施型態的彈 性體3 2，其剖面略呈二角开>’並以與傾斜面3 1的尺寸相 對應之尺寸形成。 又，反射構件26在其兩端部各自形成舌片2心，使傾 斜面24端部旁邊的黏結面積增大。藉此，可補強第丨部分 26a對導光板24的黏結。 如此’可防止在使用畫像顯示裝置時第2部分26b由 傾斜面31剝落，或第1部分26a由出射面25剝落。 一旦點亮螢光燈28,大部分的光由背面27入射至導 光板24的内部。於此，在背面27側，配置由光反射性佳 的PET等樹脂板構成的反射板33，該反射板33的榮光燈 28的側端部，係切成缺口如第6圖所示，以使發自榮光= 28之光入射至導光板24的傾斜面31側端部。（第6圖的 兩點鎖緣部34)，形成比導光板24的背面27的面積還小。 反射板33將由背面27漏出之光予以反射，而返回至導光 板24内部，以防止光的漏失（丨〇ss)。 尚且，在背面27側上配置光反射性佳的框架面板（參 照第9圖）’可在該反射面板將由導光板24的背面2?側出 射的光反射時，可以省略前述反射板33。 在本實施形態中，大部分發自螢光燈28的光，入射 本紙張尺度適用中國國家標準（CNS〉A4規格（21〇χ 297公餐） 9 312981 (請先閱讀背面之注意事項再填寫本頁) --------tT-------1V. Description of the invention (8) The configuration position of (8) 28 is on the back surface 27 ^ ^ ^ ^ ^ ^ ^ ^ 詈, i 一 + 备 隹 "corresponds to the position of the inclined surface 31." That is, on the inclined surface 31 of the rear surface 27 Corresponding to the end of the side (please read the precautions on the back before filling this page) and the 'LCD panel 23 is arranged in a way that corresponds to the exit surface of the light guide plate 24. The light guide plate 24 is formed in such a manner that the thickness at one end portion is larger than the other end portion, and the cross-sectional shape along the line cc in FIG. 6 is slightly wedge-shaped, and its planar shape is rectangular. The material can be PC, PMMA, cycloolefin resin, etc. On one end portion of the light guide plate 24, the side surface 2 is cut obliquely to form an inclined surface 31. The exit surface with respect to the inclined surface 31 is not inclined at an angle, and is set such that most of the light emitted from the fluorescent lamp 28 is reflected in a direction parallel to the exit surface 25 of the light guide plate 24 and transmitted. Similar to the first embodiment, the reflecting member 26 is formed of a film having excellent light reflectivity, such as white pET, and silver plating is deposited on the surface opposite to the light guide plate 24. Apply bonding material to the silver-plated surface. An important feature of this embodiment printed by the Employees ’Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs is that the reflecting member 26 has a first part 26a bonded to the exit surface 25 of the light guide plate 24, and is fixed to the inclined surface 31 of the light guide plate 24 Part 2 26b. The first member 26a of the reflecting member% has a larger bonding area than the second portion 26b, and can be fixedly fixed to the light-exiting surface 25 of the light guide plate 24. The second portion 26b of the reflecting member 26 adheres the inclined surface 31 in a state of being meandered along the shape of the light guide plate 24. However, since the adhesive area of the inclined surface 31 is small, the second portion 26b is easily affected by The restoring force of the reflecting member 26 is peeled off by the inclined surface 31 (see FIG. 7). This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 8 312981 588298 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (9) Therefore, in this embodiment, the Similar to the first embodiment, an elastic body 32 such as a sponge or a foamed rubber is adhered to a surface (non-adhesive surface) opposite to the liquid crystal display panel 23 of the second portion 26b. The elastic body 32 is pressed by the liquid crystal display panel 23 assembled to the surface light source device 22, and the second portion 26b is pressed against the inclined surface 31 by the elastic body 32. In addition, the elastic body 32 of this embodiment has a cross-section slightly opened > 'and is formed in a size corresponding to the size of the inclined surface 31. In addition, the reflecting member 26 forms tongues 2 at each of its two ends, so that the bonding area beside the end of the inclined surface 24 is increased. Thereby, the adhesion of the first portion 26a to the light guide plate 24 can be strengthened. In this way, when the image display device is used, the second portion 26b is prevented from peeling off from the inclined surface 31, or the first portion 26a is peeled off from the emitting surface 25. Once the fluorescent lamp 28 is turned on, most of the light enters the inside of the light guide plate 24 from the back surface 27. Here, a reflecting plate 33 made of a resin plate such as PET with excellent light reflectivity is arranged on the back surface 27 side. The side end portion of the glare lamp 28 of the reflecting plate 33 is cut into a gap as shown in FIG. The light emitted from glory light = 28 is made incident on the end of the inclined surface 31 side of the light guide plate 24. (The two-point locking edge portion 34 in FIG. 6) is formed to have a smaller area than the back surface 27 of the light guide plate 24. The reflection plate 33 reflects the light leaked from the back surface 27 and returns to the inside of the light guide plate 24 to prevent light leakage (0ss). In addition, a frame panel (refer to FIG. 9) having excellent light reflectivity is disposed on the back surface 27 side, and when the reflection panel reflects light emitted from the back surface side of the light guide plate 24, the aforementioned reflection plate 33 may be omitted. In this embodiment, most of the light emitted from the fluorescent lamp 28 is applied to the paper size according to the Chinese national standard (CNS> A4 specification (21〇χ 297 meals) 9 312981 (Please read the precautions on the back before filling (This page) -------- tT ------- 1
588298 B7 五、發明說明（10 ) 至導光板24的内部夕你 , 31之反射構棹二 斜面或黏著於該傾斜面 構件26反射’改變方向為與出射面25平行之方 (請先閱讀背面之注音？事項再填寫本頁) 向，而於導光板4的内部傳播。於導光板24内部傳播的光， 内部入射至出射面25的機會。如眾所週知，内部入射至出 射面25之時’入射角為臨界角以下的光成分的大部分會由 出射面25逸出外部。 尚且，螢光燈28位於導光板24背面27側，螢光燈 28位於由液晶顯示面板23分離之位置，具有螢光燈的 熱度不容易傳達至液晶顯示面板23之優點。因此，根據本 實施形態’可防止液晶顯示面板23因部分的加熱所而產生 的顏色之不均，而可獲致均勻高品質的畫像顯示。588298 B7 V. Description of the invention (10) To the inside of the light guide plate 24, the reflective structure of 31 or two oblique surfaces or the members 26 adhered to the inclined surface 26 reflect 'change direction to be parallel to the exit surface 25 (please read the back first Note of note? Please fill in this page again), and propagate inside the light guide plate 4. The light propagating inside the light guide plate 24 may be incident on the exit surface 25 inside. As is well known, when the inside is incident on the exit surface 25, most of the light components whose incidence angle is below the critical angle will escape from the exit surface 25 to the outside. Furthermore, the fluorescent lamp 28 is located on the back 27 side of the light guide plate 24, and the fluorescent lamp 28 is located at a position separated from the liquid crystal display panel 23, which has the advantage that the heat of the fluorescent lamp is not easily transmitted to the liquid crystal display panel 23. Therefore, according to this embodiment mode, it is possible to prevent color unevenness caused by the partial heating of the liquid crystal display panel 23, and to obtain uniform and high-quality image display.
經濟部智慧財產局員工消費合作社印製 如前述說明，本實施形態中，組裝液晶顯示面板23 於出射面25側之時，固定於出射面25端部之反射構件％ 的彈性體32被液晶顯示面板23壓住，該彈性構件32使反 射構件26的第2部分26b緊貼於傾斜面31。所以，來自 螢光燈28的光不會由傾斜面31漏出外部，可確實的反射， 以傳送到導光板24内部。因此，與以往的例子相比，可有 效的提昇螢光燈28的光之利用率，以達成來自導光板24 的出射光之亮度上昇。 又，本實施形態中，與第1實施形態相同，反射構件 26具備黏結故固定於導光板24的出射面25之第1部分 26a、和黏結於傾斜面31之第2部分26b，所以，與以往 例中（參照第10圖）反射體106僅黏結固定於導光板1〇2的 傾斜面105相比，可使反射構件26的黏結面積變大。結果， 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 10 312981 588298 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（11) 反射構件26的黏結固定作業變容易，晝像顯示裝置21的 製造步驟可以比以往例簡單。且，也可確實的避免因反射 構件6磨損而導致照明性能低下之情況發生。 本實施形態中，僅以剖面略呈楔形之導光板24為例。 也可以採用均勻厚度的導光板、或其他剖面形狀的導光板 等。 本實施形態中，僅以在導光板24的背面側的一端部 上，配置螢光燈28的型態為例，然而並不限於此，也可在 對應於其他3邊的至少i邊上設置螢光燈28，也可使用複 數個螢光燈28。 本實施形態中，以彈性體32而言，與第1實施型態 的彈性體12相同，例如可以是聚氨基甲酸酯泡沫體 (polyiirthane foam)、發泡聚（polyolefin)、發泡橡膠等一 般’該材料以可將第2部分26b推壓於傾斜面11即可，並 無特別的材料限制。然而，若考慮到對液晶顯示面板23 或導光板24等其他構件的負荷，則以海綿（sp〇nge)狀的軟 質泡沫為佳。 (3)第3實施型態 第9圖為說明關於本發明第3實施型態的畫像顯示裳 置之部分的剖視圖。本實施型態相當於第1及第2實施型 態的變形例之實施型態。即，本實施型態的畫像顯示裝置 41之特徵在於，使用充填材42來代替第1及第2實施型 態中所採用的彈性體12或32。 如第9圖所示，反射構件43具備第1部分43a和第2 本紙張尺度適用中國國家標準（CNS)A4規格⑵Gx 297公爱)" ' --- 11 312981 ----------裝·-------訂--------- (請先閱讀背面之注意事項再填寫本頁) 588298 A7 B7 一 " 一丨丨丨丨_ 五、發明說明（12 ) 請先閱讀背面之注意事項再填寫本頁} 部43b，第1部分43a黏結於導光板44的出射面45，第2 部分43b黏結於傾斜面46。在收容導光板44或液晶顯示 面板（被照明構件）47等框架48和反射構件43的縫隙間， 收容充填材42。 液晶顯示面板47在組裝於框架48之時，以填充材42 將反射構件43推壓於傾斜面46。該填充材42可使用海 綿、橡膠等彈性體，或配合縫隙而產生變形之橡膠狀、黏 土狀、凝膠（gel)狀之可塑性材料。 於此’支持導光板44的背面50之框架面板51以光 反射性佳之白色形成，在該端部形成朝向導光板44側開口 以便收谷螢光燈（一次光源）52的收容凹部53。尚且，傾斜 面46形成於導光板44的侧面44a。 如此構成的本實施型態，可獲得與前述第i及第2實 施型態相同的效果。尚且，前述各實施型態中，舉例說明 將反射構件6、26、43的第1部分6a、26a、43a黏結固定 於導光板4、24、44的出射面5、25、45側之狀態，然而 本發明並不限定於此。 經濟部皆慧財i笱員工消費合阼社印製 例如：也可將反射構件6、26、43的第1部分6a、26a、 43a黏結固定於作為被照明構件之液晶顯示面板3、23、 47。又，若藉由彈性體12、32或填充材42，將反射構件6、 26、43的第2部分6b、26b、43b非常緊密黏結於傾斜面 11、31、46，則可依需要省略塗在該第2部分讣、2讣、 43b之黏結材。 月il述第3實施型態中，框架面板5 j沒有配置於導光 本紙張尺度適用中國國家標準（CNS)A4規格（-----— 〜A 度 J 12 588298 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（U ) 板44背面50側時，如第1及第2實施型態，可在導光板 44的背面50側配置反射板。 再者，前述各實施型態令，以作為被照明構件之液晶 顯不面板3、23、47為例’然而此為典型例，並非限定本 :明之：構。即’以由導光板4、24、44出射的光照射之 ”他任意構件，例如擴散板或稜鏡片等也可包含在被 構件。 ^ 如上詳細之說明，由於本發明之反射構件具有盥導光 板的出射面黏結固定的第】部分、和與傾斜面緊密社人之 第2部分’故與以往例中，將反射膜（反射構件）黏結^定 於導光板的傾斜面而已之情形相比’可使反射構件的黏結 面積增大。結果’反射構件的黏結固定作業容易化，可將 面光源裝置、或具有該面光源裝置之畫像顯示裝置的製造 所需要的步驟數，比以往例減少。 本發明中’藉由配置於反射構件的第2部分和被照明 構件之間的彈性體或填充材’可使反射構件的第 壓於傾斜面，故反射構件的第2部分不會由傾斜面剝= 可使來自光源的光更有效率的入射至導光板内部。， [圖面之簡單說明] 晋之第I圖為表示表示本發明第1實施型態的畫像顯示裝 置之分解斜視圖。 策 第2圖為第i實施型態中，表示將液晶顯示 於面光源裝置前的狀態之剖視圖，俜 ^ A-A之剖面。 係表m第1圖的線 ^紙張尺度適用中國國家標準（CNS)A4規格（210 X 297 ^ 312981 --------^--------- (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 588298 A7 一~--------------- 五、發明說明（Μ ) 第3圖為表示第！實施型態的畫像顯示裝置的一部份 之剖視圖。 第4圖為表示第1實施型態中所使用的導光板之平面 圖。 第5圖為關於第4圖所示之導光板，⑷為由符號β的 位置正視導光板之侧面圖，第5圖（b)為由符號8的位置斜 視（箭頭）導光板的側面之部分的剖視圖。 第6圖為表示第2實施型態中畫像顯示裝置之分解斜 視圖。 / 第7圖為表示第2實施型態中，組裝液晶顯示面板於 面光源裝置前的狀態之剖視圖，係表示沿著第6圖的線 C-C之剖面。 第8圖為說明關於第2實施型態的畫像顯示裝置之部 分剖視圖。 第9圖為說明關於本發明第3實施型態的畫像顯示裝 置之部分剖視圖。 第10圖為說明關於以往液晶顯示裝置之部分剖視 圖。 [元件符號之說明] 1、21、41畫像顯示裝置 2、22 面光源裝置 3、 23、47液晶顯示面板（被照明構件） 4、 24、44導光板 5、25、45出射面 6、26、43反射構件 知、26a ' 43a第1部分 6b、26b、43b 第 2 部分 7、27、50 背面 -----------裝--------訂---------^9. (請先閱讀背面之注意事項再填寫本頁> 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公餐） 14 312981 588298 A7 B7 五、發明說明（15 ) 8 LED(光源） 10 倒角部分（側面） 11、31、46傾斜面 12、32 彈性體 24a 側面 28、52 螢光燈（光源） 42 填充材 44a 側面 (請先閱讀背面之注意事項再填寫本頁) · ϋ· ϋ ϋ «ι_1 n 1_1 一OJI 1 ϋ Βϋ i. 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210^ 297公釐） 15 312981Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs as described above. In this embodiment, when the liquid crystal display panel 23 is assembled on the exit surface 25 side, the elastic body 32 of the reflective member fixed to the end of the exit surface 25 is displayed by the liquid crystal. The panel 23 is pressed, and the elastic member 32 brings the second portion 26 b of the reflection member 26 into close contact with the inclined surface 31. Therefore, the light from the fluorescent lamp 28 does not leak to the outside through the inclined surface 31, and can be reliably reflected to be transmitted to the inside of the light guide plate 24. Therefore, compared with the conventional example, the utilization ratio of the light of the fluorescent lamp 28 can be effectively increased, so that the brightness of the light emitted from the light guide plate 24 can be increased. In this embodiment, as in the first embodiment, the reflecting member 26 includes a first portion 26a that is fixed to the exit surface 25 of the light guide plate 24 and a second portion 26b that is fixed to the inclined surface 31. In the conventional example (refer to FIG. 10), the reflector 106 can be bonded to the inclined surface 105 of the light guide plate 102 only to increase the bonding area of the reflecting member 26. As a result, this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 10 312981 588298 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (11) Bonding and fixing of the reflective member 26 This makes it easier to manufacture the day image display device 21 than in the conventional example. In addition, it is possible to reliably prevent the deterioration of the lighting performance caused by the abrasion of the reflecting member 6. In this embodiment, only the light guide plate 24 having a slightly wedge-shaped cross section is taken as an example. Light guide plates of uniform thickness or light guide plates of other cross-sectional shapes may also be used. In this embodiment, the type in which the fluorescent lamp 28 is arranged on only one end portion on the back side of the light guide plate 24 is taken as an example. However, it is not limited to this, and it may be provided on at least the i side corresponding to the other three sides. The fluorescent lamp 28 may be a plurality of fluorescent lamps 28. In this embodiment, the elastomer 32 is the same as the elastomer 12 of the first embodiment, and may be, for example, a polyurethane foam (polyiirthane foam), a foamed polyolefin (polyolefin), or a foamed rubber. Generally, the material may be capable of pressing the second portion 26b on the inclined surface 11, and there is no particular material limitation. However, in consideration of the load on other members such as the liquid crystal display panel 23 and the light guide plate 24, a sponge-like flexible foam is preferred. (3) Third embodiment Fig. 9 is a cross-sectional view illustrating a part of a portrait display device according to a third embodiment of the present invention. This embodiment corresponds to the embodiment of the modified examples of the first and second embodiments. That is, the image display device 41 of this embodiment is characterized in that a filler 42 is used instead of the elastic body 12 or 32 used in the first and second embodiments. As shown in FIG. 9, the reflecting member 43 is provided with the first part 43 a and the second paper size. The Chinese National Standard (CNS) A4 specification (Gx 297 public love) is applicable. &Quot; '--- 11 312981 ------- --- Installation ------- Order --------- (Please read the precautions on the back before filling this page) 588298 A7 B7 I " A 丨 丨 丨 丨 _ V. Invention Note (12) Please read the precautions on the back before filling in this page} Section 43b, the first section 43a is bonded to the exit surface 45 of the light guide plate 44, and the second section 43b is bonded to the inclined surface 46. A filler 42 is housed between the gap between the frame 48 such as the light guide plate 44 or the liquid crystal display panel (lighted member) 47 and the reflecting member 43. When the liquid crystal display panel 47 is assembled to the frame 48, the reflecting member 43 is pressed against the inclined surface 46 with the filler 42. The filler 42 may be made of an elastic body such as sponge or rubber, or a rubber-like, clay-like, or gel-like plastic material that deforms in accordance with the gap. Here, a frame panel 51 supporting the back surface 50 of the light guide plate 44 is formed in white with excellent light reflectivity, and a receiving recess 53 is formed at the end portion toward the light guide plate 44 side to receive a fluorescent lamp (primary light source) 52. The inclined surface 46 is formed on the side surface 44a of the light guide plate 44. The present embodiment configured as described above can obtain the same effects as those of the i-th and second embodiments. Moreover, in each of the foregoing embodiments, examples are described in which the first parts 6a, 26a, 43a of the reflection members 6, 26, 43 are bonded and fixed to the exit surfaces 5, 25, 45 of the light guide plates 4, 24, 44. However, the present invention is not limited to this. Printed by Jihuicai of the Ministry of Economic Affairs and employee consumer cooperatives. For example, the first parts 6a, 26a, 43a of the reflective members 6, 26, 43 can also be bonded and fixed to the liquid crystal display panels 3, 23, which are illuminated members. 47. In addition, if the second portions 6b, 26b, 43b of the reflecting members 6, 26, 43 are very tightly bonded to the inclined surfaces 11, 31, 46 by the elastic bodies 12, 32, or the filler 42, the coating can be omitted as necessary. Bonding material in the second part 讣, 2 讣, 43b. In the third implementation form described above, the frame panel 5 j is not arranged in the light guide. The paper size applies the Chinese National Standard (CNS) A4 specification (-----— ~ A degree J 12 588298 Employees of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 printed by the consumer cooperative 5. When the (U) plate 44 is on the back 50 side, as in the first and second embodiments, a reflecting plate may be arranged on the back 50 side of the light guide plate 44. Furthermore, the foregoing embodiments State order, taking the liquid crystal display panels 3, 23, and 47 as illuminated members as examples. However, this is a typical example and is not limited to this: Ming: Structure. That is, it is illuminated by light emitted from the light guide plates 4, 24, and 44 Any other component, such as a diffuser or cymbal, may also be included in the substrate. ^ As described in detail above, the reflective member of the present invention has a first section bonded and fixed to the exit surface of the light guide plate, and an inclined surface. The second part of the close company "so it is possible to increase the bonding area of the reflective member compared to the case where the reflective film (reflecting member) is bonded to the inclined surface of the light guide plate in the conventional example." Easy bonding and fixing work, The number of steps required to manufacture a surface light source device or an image display device having the surface light source device is reduced compared to the conventional example. In the present invention, 'the elasticity between the second portion of the reflecting member and the illuminated member is provided. The body or filling material can make the second part of the reflective member press on the inclined surface, so the second part of the reflective member will not be peeled off by the inclined surface = it can make the light from the light source incident more efficiently into the light guide plate., [图 面Brief description] Figure I of Jin is an exploded perspective view showing the image display device showing the first embodiment of the present invention. Figure 2 is a diagram showing the liquid crystal display in front of the surface light source device in the i-th embodiment. A cross-sectional view of the state, 俜 ^ AA cross-section. The line of Figure 1 in the table m ^ The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 ^ 312981 -------- ^ ----- ---- (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 588298 A7 I ~ --------------- V. Description of Invention (M) FIG. 3 is a cross-sectional view of a part of the image display device showing the first! FIG. 4 is a plan view showing a light guide plate used in the first embodiment. FIG. 5 is a side view of the light guide plate shown in FIG. (B) is a cross-sectional view of a part of the side surface of the light guide plate that is obliquely viewed (arrow) from the position of symbol 8. FIG. 6 is an exploded perspective view showing the image display device in the second embodiment. / FIG. 7 is a view showing the second embodiment. A cross-sectional view of a state where the liquid crystal display panel is assembled before the surface light source device is a cross-section taken along line CC of FIG. 6. FIG. 8 is a partial cross-sectional view illustrating an image display device according to a second embodiment. Fig. 9 is a partial cross-sectional view illustrating an image display device according to a third embodiment of the present invention. Fig. 10 is a partial cross-sectional view illustrating a conventional liquid crystal display device. [Explanation of component symbols] 1, 21, 41 Image display device 2, 22 Surface light source device 3, 23, 47 Liquid crystal display panel (lighted member) 4, 24, 44 Light guide plate 5, 25, 45 Exit surface 6, 26 , 43 reflection members, 26a '43a part 1 6b, 26b, 43b part 2 7, 27, 50 back ----------- install -------- order --- ------ ^ 9. (Please read the notes on the back before filling in this page> This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 meals) 14 312981 588298 A7 B7 V. Invention Description (15) 8 LED (light source) 10 Beveled part (side) 11, 31, 46 inclined surface 12, 32 elastomer 24a side 28, 52 fluorescent lamp (light source) 42 filler 44a side (please read the back first Please fill in this page for further information.) Ϋ · ϋ ϋ «ι_1 n 1_1 1 OJI 1 ϋ ϋ Centimeters) 15 312981