JP2016143019A - Display device - Google Patents

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JP2016143019A
JP2016143019A JP2015020937A JP2015020937A JP2016143019A JP 2016143019 A JP2016143019 A JP 2016143019A JP 2015020937 A JP2015020937 A JP 2015020937A JP 2015020937 A JP2015020937 A JP 2015020937A JP 2016143019 A JP2016143019 A JP 2016143019A
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translucent plate
rear surface
optical film
opening
housing
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JP6507684B2 (en
Inventor
明 板橋
Akira Itabashi
明 板橋
青野　賢司
Kenji Aono
賢司 青野
藤田　桂
Katsura Fujita
桂 藤田
金子　博明
Hiroaki Kaneko
博明 金子
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a display device in which an edge of an optical film is hard to be visually recognized, and a display quality is less likely to be impaired.SOLUTION: A housing 100 has a frame part 32 having an opening 32a, and a translucent plate 31 which is integrally formed with the frame part 32. A display panel 10 is accommodated in the housing 100, and is visually recognized from the opening 32a. An optical film 50 is stuck to a rear surface 31b of the translucent plate 31. Near the opening 32a, the rear surface 31b of the translucent plate 31 protrudes more inside the housing 100 than the frame part 32, or is flush with the frame part 32. The optical film 50 is wider than the rear surface 31b of the translucent plate 31. The optical film 50 is a moth-eye film.SELECTED DRAWING: Figure 1

Description

本発明は、モスアイフィルム等の光学フィルムを備えた表示装置に関するものである。   The present invention relates to a display device including an optical film such as a moth-eye film.

従来より、外光反射を防止するための光学フィルムが設けられた表示装置が種々提案されており、例えば特許文献１に開示されている。斯かる表示装置は、可視光の波長以下のピッチで配置された多数の錘状突部を有する光学フィルム（モスアイフィルム）により、外光反射を低減させるものである。このような表示装置は、表示パネル及びこの表示パネルの前側に配置された透光板を備え、透光板を通して表示パネルを視認ものであり、透光板の表示パネル側に光学フィルムが貼着されている。   Conventionally, various display devices provided with an optical film for preventing external light reflection have been proposed. For example, Patent Document 1 discloses the display device. Such a display device reduces external light reflection by an optical film (moth eye film) having a large number of conical protrusions arranged at a pitch equal to or smaller than the wavelength of visible light. Such a display device includes a display panel and a translucent plate disposed on the front side of the display panel, the display panel is visually recognized through the translucent plate, and an optical film is attached to the display panel side of the translucent plate. Has been.

特開２０１２−１８５３３８号公報JP 2012-185338 A

しかしながら、モスアイフィルムの縁部が視認されてしまう虞があった。つまり、モスアイフィルム等の光学フィルムは、それ自体は視認されないことが望ましいのであるが、モスアイフィルムの外延である縁部が視認され、表示品位が損なわれるという問題を有していた。
本発明は、この問題に鑑みなされたものであり、光学フィルムの縁部が視認され難く、表示品位が損なわれる虞が少ない表示装置を提供するものである。 However, there is a possibility that the edge of the moth-eye film is visually recognized. In other words, it is desirable that the optical film such as the moth-eye film is not perceived by itself, but has a problem that the edge part which is the outer extension of the moth-eye film is perceived and the display quality is impaired.
The present invention has been made in view of this problem, and provides a display device in which an edge of an optical film is hardly visually recognized and the display quality is less likely to be impaired.

本発明は、開口部３２ａを有する枠部３２及び前記枠部３２に一体形成された透光板３１を有するハウジング１００と、前記ハウジング１００に収容され前記開口部３２ａから視認される表示パネル１０と、前記透光板３１の後面３１ｂに貼着された光学フィルム５０と、を備え、前記透光板３１の前記後面３１ｂは、前記開口部３２ａの近傍において前記枠部３２よりも前記ハウジング１００の中側に突出しているか若しくは前記枠部３２と同一面になっており、且つ、前記光学フィルム５０は、前記透光板３１の前記後面３１ｂよりも幅広であるものである。   The present invention includes a housing 100 having a frame portion 32 having an opening portion 32a and a light-transmitting plate 31 integrally formed with the frame portion 32, and a display panel 10 housed in the housing 100 and visually recognized from the opening portion 32a. An optical film 50 attached to the rear surface 31b of the light transmitting plate 31, and the rear surface 31b of the light transmitting plate 31 is closer to the housing 100 than the frame portion 32 in the vicinity of the opening 32a. The optical film 50 protrudes inward or is flush with the frame portion 32, and the optical film 50 is wider than the rear surface 31 b of the translucent plate 31.

また、本発明は、前記光学フィルム５０は、前記ハウジング１００の前記開口部３２ａよりも幅広であるものである。   In the present invention, the optical film 50 is wider than the opening 32 a of the housing 100.

また、本発明は、前記光学フィルム５０は、モスアイフィルムであるものである。   In the present invention, the optical film 50 is a moth-eye film.

光学フィルムの縁部が視認され難いため、表示品位が損なわれる虞が少ない。   Since the edge of the optical film is difficult to be visually recognized, there is little possibility that the display quality is impaired.

本発明の第一実施形態を示す断面図。Sectional drawing which shows 1st embodiment of this invention. 同上実施形態を示す正面図。The front view which shows embodiment same as the above. 同上実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows embodiment same as the above. 本発明の第二実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows 2nd embodiment of this invention. 本発明の第三実施形態を示す断面図。Sectional drawing which shows 3rd embodiment of this invention. 同上実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows embodiment same as the above. 本発明の第四実施形態を示す断面図。Sectional drawing which shows 4th embodiment of this invention. 同上実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows embodiment same as the above. 本発明の第四実施形態を示す断面図。Sectional drawing which shows 4th embodiment of this invention. 比較例を示す断面図。Sectional drawing which shows a comparative example. 比較例を示す断面図。Sectional drawing which shows a comparative example.

以下、添付図面に基づいて、本発明を車両用表示装置に適用した一実施形態を説明する。図１乃至図３は、第一実施形態を示すものである。車両用表示装置は、液晶表示器１０，回路基板２０，上ケース３０，下ケース４０，モスアイフィルム５０を備えている。   Hereinafter, an embodiment in which the present invention is applied to a vehicle display device will be described with reference to the accompanying drawings. 1 to 3 show a first embodiment. The vehicle display device includes a liquid crystal display 10, a circuit board 20, an upper case 30, a lower case 40, and a moth-eye film 50.

液晶表示器１０は、例えばカラー液晶モジュールからなるものであり、ＴＦＴ型液晶表示素子及びバックライトユニットを有している。液晶表示器１０は、図示しない可撓性配線部材により、回路基板２０と電気的に接続されている。回路基板２０は、ガラスエポキシ樹脂からなる基材に銅箔からなる配線パターンを形成したものであり、回路基板２０には、液晶表示器１０を制御するマイコン等の各種電子部品が実装されている。液晶表示器１０の画面には、車両速度等の車両情報が表示される。   The liquid crystal display 10 is composed of, for example, a color liquid crystal module, and includes a TFT type liquid crystal display element and a backlight unit. The liquid crystal display 10 is electrically connected to the circuit board 20 by a flexible wiring member (not shown). The circuit board 20 is obtained by forming a wiring pattern made of copper foil on a base material made of glass epoxy resin, and various electronic components such as a microcomputer for controlling the liquid crystal display 10 are mounted on the circuit board 20. . Vehicle information such as vehicle speed is displayed on the screen of the liquid crystal display 10.

上ケース３０は、液晶表示器１０に表示された画像を視認するための透光板３１と、不透明な樹脂からなる枠部３２とを有している。上ケース３０の透光板３１は、透光性樹脂若しくは無機ガラスからなるものであり、正面視で矩形になっている。上ケース３０の透光板３１は、平板形状になっており、枠部３２にインサート成形されている。透光板３１の後面３１ｂの周囲には、段差部３１ｄが形成されており、透光板３１の後面３１ｂは、前面３１ｆよりも狭くなっている。透光板３１の後面３１ｂは、所定の横幅Ｗ１及び縦幅Ｗ２を有している。   The upper case 30 has a translucent plate 31 for visually recognizing an image displayed on the liquid crystal display 10 and a frame portion 32 made of an opaque resin. The translucent plate 31 of the upper case 30 is made of translucent resin or inorganic glass and has a rectangular shape when viewed from the front. The translucent plate 31 of the upper case 30 has a flat plate shape and is insert-molded in the frame portion 32. A step portion 31d is formed around the rear surface 31b of the translucent plate 31, and the rear surface 31b of the translucent plate 31 is narrower than the front surface 31f. The rear surface 31b of the translucent plate 31 has a predetermined horizontal width W1 and vertical width W2.

上ケース３０の枠部３２は、矩形の開口部３２ａを有しており、この開口部３２ａから液晶表示器１０の画面が視認される。枠部３２の開口部３２ａは、透光板３１の後面３１ｂと同一形状で、且つ、同一の大きさになっている。上ケース３０の枠部３２は、矩形の窓部３２ｗを有しており、この窓部３２ｗは、透光板３１の前面３１ｆと同一形状で、且つ、同一の大きさになっている。上ケース３０の枠部３２は、透光板３１の外周端部３１ｇから開口部３２ａに延長形成された延長部３２ｅを有している。延長部３２ｅの後面と、透光板３１の後面３１ｂとは同一面になっている。透光板３１の後面３１ｂと、延長部３２ｅの後面とが同一面になっているため、開口部３２ａの近傍に気泡が生じる虞が少ない。延長部３２ｅの前面は、延長部３２ｅの後面と平行になっている。   The frame portion 32 of the upper case 30 has a rectangular opening 32a, and the screen of the liquid crystal display 10 is visually recognized through the opening 32a. The opening 32 a of the frame portion 32 has the same shape and the same size as the rear surface 31 b of the translucent plate 31. The frame portion 32 of the upper case 30 has a rectangular window portion 32w, and this window portion 32w has the same shape and the same size as the front surface 31f of the translucent plate 31. The frame part 32 of the upper case 30 has an extension part 32e that extends from the outer peripheral end part 31g of the translucent plate 31 to the opening part 32a. The rear surface of the extension part 32e and the rear surface 31b of the translucent plate 31 are the same surface. Since the rear surface 31b of the translucent plate 31 and the rear surface of the extension portion 32e are the same surface, there is little possibility that bubbles are generated in the vicinity of the opening portion 32a. The front surface of the extension portion 32e is parallel to the rear surface of the extension portion 32e.

下ケース４０は、不透明な樹脂からなるものであり、底壁部４１と周壁部４２とを有している。下ケース４０の周壁部４２は、図示しないフックやビスによって上ケース３０の枠部３２に固定されている。ハウジング１００は、上ケース３０と下ケース４０とからなるものである。ハウジング１００には、液晶表示器１０及び回路基板２０が収容されている。   The lower case 40 is made of an opaque resin and has a bottom wall portion 41 and a peripheral wall portion 42. The peripheral wall portion 42 of the lower case 40 is fixed to the frame portion 32 of the upper case 30 by hooks and screws (not shown). The housing 100 includes an upper case 30 and a lower case 40. The housing 100 accommodates the liquid crystal display 10 and the circuit board 20.

モスアイフィルム５０は、可視光の波長以下のピッチで配置された多数の錘状突部を有する光学フィルムであり、例えば、三菱レイヨン株式会社製のモスマイト（登録商標）を用いることができる。モスアイフィルム５０は、矩形になっており、所定の横幅Ｗ３及び縦幅Ｗ４を有している。モスアイフィルム５０の横幅Ｗ３は、後面３１ｂの横幅Ｗ１よりも大きく、且つ、モスアイフィルム５０の縦幅Ｗ４は、後面３１ｂの縦幅Ｗ２よりも大きい。モスアイフィルム５０は、透光性粘着層によって透光板３１の後面３１ｂに貼着されている。モスアイフィルム５０は、透光板３１の後面３１ｂの全面だけでなく、延長部３２ｅの後面にも貼着されている。   The moth-eye film 50 is an optical film having a large number of spindle-shaped protrusions arranged at a pitch equal to or smaller than the wavelength of visible light. For example, Mosmite (registered trademark) manufactured by Mitsubishi Rayon Co., Ltd. can be used. The moth-eye film 50 has a rectangular shape and has a predetermined horizontal width W3 and vertical width W4. The horizontal width W3 of the moth-eye film 50 is larger than the horizontal width W1 of the rear surface 31b, and the vertical width W4 of the moth-eye film 50 is larger than the vertical width W2 of the rear surface 31b. The moth-eye film 50 is adhered to the rear surface 31b of the light-transmitting plate 31 with a light-transmitting adhesive layer. The moth-eye film 50 is attached not only to the entire rear surface 31b of the translucent plate 31, but also to the rear surface of the extension 32e.

図４は、第二実施形態を示すものである。第二実施形態は、第一実施形態に比して透光板３１が異なるだけであり、他の構成は第一実施形態と同様である。   FIG. 4 shows a second embodiment. The second embodiment is different from the first embodiment only in the translucent plate 31, and the other configuration is the same as that of the first embodiment.

透光板３１の後面３１ｂは、延長部３２ｅの後面よりも、ハウジング１００の中側に突出している。透光板３１の後面３１ｂが枠部３２よりも突出しているため、開口部３２ａの近傍に気泡が生じる虞があるが、その気泡は開口部３２ａよりも外側に生じるため、視認され難い。   The rear surface 31b of the translucent plate 31 protrudes to the inside of the housing 100 from the rear surface of the extension portion 32e. Since the rear surface 31b of the translucent plate 31 protrudes from the frame portion 32, there is a possibility that bubbles may be generated in the vicinity of the opening portion 32a. However, since the bubbles are generated outside the opening portion 32a, it is difficult to be visually recognized.

図５及び図６は、第三実施形態を示すものである。第三実施形態は、第一実施形態に比して枠部３２が異なるだけであり、他の構成は第一実施形態と同様である。   5 and 6 show a third embodiment. The third embodiment is different from the first embodiment only in the frame part 32, and the other configuration is the same as that of the first embodiment.

上ケース３０の枠部３２は、矩形の開口部３２ａを有しており、この開口部３２ａは、透光板３１の後面３１ｂと同一形状で、且つ、同一の大きさになっている。上ケース３０の枠部３２は、矩形の窓部３２ｗを有しており、この窓部３２ｗは、透光板３１の前面３１ｆと同一形状で、且つ、同一の大きさになっている。上ケース３０の枠部３２は、透光板３１の外周端部３１ｇから開口部３２ａに延長形成された延長部３２ｅを有している。延長部３２ｅの後面と、透光板３１の後面３１ｂとは同一面になっている。延長部３２ｅの前面は、傾斜面になっている。   The frame portion 32 of the upper case 30 has a rectangular opening 32a, and the opening 32a has the same shape and the same size as the rear surface 31b of the translucent plate 31. The frame portion 32 of the upper case 30 has a rectangular window portion 32w, and this window portion 32w has the same shape and the same size as the front surface 31f of the translucent plate 31. The frame part 32 of the upper case 30 has an extension part 32e that extends from the outer peripheral end part 31g of the translucent plate 31 to the opening part 32a. The rear surface of the extension part 32e and the rear surface 31b of the translucent plate 31 are the same surface. The front surface of the extension 32e is an inclined surface.

図７及び図８は、第四実施形態を示すものである。第四実施形態は、第一実施形態に比して枠部３２が異なるだけであり、他の構成は第一実施形態と同様である。   7 and 8 show a fourth embodiment. The fourth embodiment is different from the first embodiment only in the frame part 32, and the other configuration is the same as that of the first embodiment.

上ケース３０の枠部３２は、矩形の開口部３２ａを有しており、この開口部３２ａは、透光板３１の後面３１ｂよりも小さくなっている。上ケース３０の枠部３２は、矩形の窓部３２ｗを有しており、この窓部３２ｗは、透光板３１の後面３１ｂと同一形状で、且つ、同一の大きさになっている。上ケース３０の枠部３２は、透光板３１の外周端部３１ｇから開口部３２ａに延長形成された延長部３２ｈと、透光板３１の外周端部３１ｇから窓部３２ｗに延長形成された延長部３２ｅとを有している。延長部３２ｅの後面と、透光板３１の後面３１ｂとは同一面になっている。   The frame portion 32 of the upper case 30 has a rectangular opening 32 a, and the opening 32 a is smaller than the rear surface 31 b of the translucent plate 31. The frame portion 32 of the upper case 30 has a rectangular window portion 32w, and the window portion 32w has the same shape and the same size as the rear surface 31b of the translucent plate 31. The frame portion 32 of the upper case 30 is formed to extend from the outer peripheral end portion 31g of the translucent plate 31 to the opening portion 32a and from the outer peripheral end portion 31g of the translucent plate 31 to the window portion 32w. And an extension 32e. The rear surface of the extension part 32e and the rear surface 31b of the translucent plate 31 are the same surface.

各実施形態によれば、モスアイフィルム５０が透光板３１の後面３１ｂよりも大きくなっているため、モスアイフィルム５０の縁部５０ｂが延長部３２ｅにて隠蔽され、視認されることがない。   According to each embodiment, since the moth-eye film 50 is larger than the rear surface 31b of the translucent plate 31, the edge part 50b of the moth-eye film 50 is concealed by the extension part 32e, and is not visually recognized.

図１０及び図１１は、比較例を示す図である。図１０に示すように、透光板３１の後面３１ｂよりもモスアイフィルム５０が小さい場合は、モスアイフィルム５０の縁部５０ｂが視認されてしまう。また、図１１に示すように、透光板３１の後面３１ｂと、延長部３２ｅの前面とが同一平面になっている場合は、モスアイフィルム５０の縁部５０ｂが延長部３２ｅにて隠蔽されるが、開口部３２ａの内側に気泡Ｂが生じて、この気泡Ｂが視認されてしまう。   10 and 11 are diagrams illustrating comparative examples. As shown in FIG. 10, when the moth-eye film 50 is smaller than the rear surface 31b of the translucent plate 31, the edge part 50b of the moth-eye film 50 will be visually recognized. Moreover, as shown in FIG. 11, when the rear surface 31b of the translucent plate 31 and the front surface of the extension part 32e are flush with each other, the edge part 50b of the moth-eye film 50 is concealed by the extension part 32e. However, a bubble B is generated inside the opening 32a, and the bubble B is visually recognized.

本発明は、各実施形態に限定されるものではなく、種々の変形が可能であり、例えば、図９に示す第五実施形態のように、枠部３２の前面を覆うように加飾部材６０を設けても良い。また、各実施形態の光学フィルムはモスアイフィルム５０であったが、例えば、光学フィルムは反射防止フィルム（ＡＲフィルム）であっても良い。また、各実施形態の表示パネルは液晶表示器であったが、例えば、表示パネルは有機ＥＬパネルであっても良い。   The present invention is not limited to each embodiment, and various modifications are possible. For example, as in the fifth embodiment shown in FIG. 9, the decorative member 60 covers the front surface of the frame portion 32. May be provided. Moreover, although the optical film of each embodiment was the moth-eye film 50, for example, the optical film may be an antireflection film (AR film). Moreover, although the display panel of each embodiment was a liquid crystal display, for example, the display panel may be an organic EL panel.

１０ 液晶表示器（表示パネル）
２０ 回路基板
３０ 上ケース
３１ 透光板
３２ 枠部
４０ 下ケース
５０ モスアイフィルム（光学フィルム）
６０ 加飾部材
１００ ハウジング 10 Liquid crystal display (display panel)
20 Circuit board 30 Upper case 31 Translucent plate 32 Frame part 40 Lower case 50 Moss eye film (optical film)
60 decorative member 100 housing

Claims (3)

開口部を有する枠部及び前記枠部に一体形成された透光板を有するハウジングと、前記ハウジングに収容され前記開口部から視認される表示パネルと、前記透光板の後面に貼着された光学フィルムと、を備え、前記透光板の前記後面は、前記開口部の近傍において前記枠部よりも前記ハウジングの中側に突出しているか若しくは前記枠部と同一面になっており、且つ、前記光学フィルムは、前記透光板の前記後面よりも幅広であることを特徴とする表示装置。   A housing having a frame portion having an opening and a translucent plate integrally formed on the frame portion, a display panel accommodated in the housing and visually recognized from the opening, and attached to a rear surface of the translucent plate An optical film, and the rear surface of the translucent plate projects closer to the inside of the housing than the frame in the vicinity of the opening, or is flush with the frame, and The display device, wherein the optical film is wider than the rear surface of the translucent plate. 前記光学フィルムは、前記ハウジングの前記開口部よりも幅広であることを特徴とする請求項１に記載の表示装置。   The display device according to claim 1, wherein the optical film is wider than the opening of the housing. 前記光学フィルムは、モスアイフィルムであることを特徴とする請求項１または請求項２に記載の表示装置。   The display device according to claim 1, wherein the optical film is a moth-eye film.
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