JP2014235512A - Display device - Google Patents

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JP2014235512A
JP2014235512A JP2013115824A JP2013115824A JP2014235512A JP 2014235512 A JP2014235512 A JP 2014235512A JP 2013115824 A JP2013115824 A JP 2013115824A JP 2013115824 A JP2013115824 A JP 2013115824A JP 2014235512 A JP2014235512 A JP 2014235512A
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panel
display
touch panel
fpc
opening
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JP5968266B2 (en
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雅一 小路
Masakazu Shoji
雅一 小路
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of preventing static electricity generated on a touch surface from being transmitted to internal electronic components.SOLUTION: A display device includes: a design panel 2 having an opening 2a; a display panel 6 whose display surface faces from the opening 2a; a touch panel 3 which is arranged on the display surface of the display panel 6, and where an FPC 4 is connected to a peripheral part; a front chassis 10 which is grounded to the back side of the display panel 6 for being assembled; and a protrusion 10a extended from the front chassis 10 toward the back side of the touch panel 3, and protruding to a position closer to a boundary between the peripheral part of the touch panel 3 and the opening 2a of the design panel 2 than the FPC 4.

Description

この発明は、フレキシブルプリント基板（以下、ＦＰＣと記載する）を使用したタッチパネルが搭載された表示装置に関する。   The present invention relates to a display device on which a touch panel using a flexible printed circuit board (hereinafter referred to as FPC) is mounted.

例えば、特許文献１には、タッチパネルを含む表示パネルと機器筐体内の基板との間をＦＰＣで電気的に接続した表示装置が開示されている。   For example, Patent Document 1 discloses a display device in which a display panel including a touch panel and a substrate in a device housing are electrically connected by FPC.

特開２０１２−１６５０５２号公報JP 2012-165052 A

近年では、機器の小型化の要望から、タッチパネルと機器内部の電子回路基板を電気的に接続するＦＰＣ上に集積回路（ＩＣ）を実装した電子機器もある。
特許文献１に代表される従来の技術では、機器の前面パネルとタッチパネルとの境界部からタッチ面上で発生した静電気がＦＰＣに伝わり、ＩＣに悪影響を与える可能性があるという課題があった。 In recent years, there is an electronic device in which an integrated circuit (IC) is mounted on an FPC that electrically connects a touch panel and an electronic circuit board inside the device due to a demand for downsizing the device.
The conventional technique represented by Patent Document 1 has a problem in that static electricity generated on the touch surface from the boundary between the front panel of the device and the touch panel is transmitted to the FPC and may adversely affect the IC.

この発明は、上記のような課題を解決するためになされたもので、タッチ面で発生した静電気が内部の電子部品に伝わることを防止できる表示装置を得ることを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a display device that can prevent static electricity generated on the touch surface from being transmitted to internal electronic components.

この発明に係る表示装置は、開口部を有する筐体と、開口部から表示面が臨む表示パネルと、表示パネルの表示面上に配置されて、周縁部にフレキシブルプリント基板が接続されたタッチパネルと、表示パネルの背面側に接地されて組み付けられるシャーシと、タッチパネルの背面側に向けてシャーシから延設され、フレキシブルプリント基板よりもタッチパネルの周縁部と筐体の開口部との境界部に近い位置まで突出した突出部とを備える。   A display device according to the present invention includes a housing having an opening, a display panel facing a display surface from the opening, a touch panel disposed on the display surface of the display panel, and a flexible printed circuit board connected to the peripheral portion A chassis that is grounded and assembled on the back side of the display panel, and that extends from the chassis toward the back side of the touch panel and is closer to the boundary between the peripheral edge of the touch panel and the opening of the housing than the flexible printed circuit board And a protruding portion that protrudes up to.

この発明によれば、タッチ面で発生した静電気が内部の電子部品に伝わることを防止できるという効果がある。   According to the present invention, there is an effect that static electricity generated on the touch surface can be prevented from being transmitted to an internal electronic component.

この発明に係る表示装置を使用した電子機器の正面図である。It is a front view of the electronic device using the display apparatus which concerns on this invention. この発明に係る表示装置の分解斜視図である。1 is an exploded perspective view of a display device according to the present invention. 従来のフロントシャーシを示す斜視図である。It is a perspective view which shows the conventional front chassis. 図１のＡ−Ａ線で切った従来の表示装置におけるフロントパネルとタッチパネルとの境界部の周辺の断面矢示図である。It is a cross-sectional arrow figure of the periphery of the boundary part of the front panel and touch panel in the conventional display apparatus cut | disconnected by the AA line of FIG. この発明の実施の形態１に係る表示装置のフロントシャーシを示す斜視図である。It is a perspective view which shows the front chassis of the display apparatus which concerns on Embodiment 1 of this invention. 図１のＡ−Ａ線で切った実施の形態１に係る表示装置におけるフロントパネルとタッチパネルとの境界部の周辺の断面矢示図である。It is a cross-sectional arrow figure of the periphery of the boundary part of the front panel and touch panel in the display apparatus which concerns on Embodiment 1 cut | disconnected by the AA line of FIG.

実施の形態１．
図１は、この発明に係る表示装置を使用した電子機器の正面図である。また、図２は、この発明に係る表示装置の分解斜視図である。図１に示す電子機器１は、例えば、ナビゲーション装置などの車載用情報機器や、ディスプレイ付きのオーディオ装置に適用されている。電子機器１の意匠パネル２は、図２に示すように、開口部２ａを有した箱状の筐体であり、開口部２ａにタッチパネル３が配置され、タッチパネル３の背面側に板金フレーム５、表示パネル６、板金ホルダ７、回路基板８、ＦＰＣホルダ９およびフロントシャーシ１０が順に配置される。タッチパネル３は、タッチ面が意匠パネル２の開口部２ａから露出するよう配置され、その周縁部にＦＰＣ４が接続されている。また、板金フレーム５は、タッチパネル３の背面側に設置される。 Embodiment 1 FIG.
FIG. 1 is a front view of an electronic apparatus using a display device according to the present invention. FIG. 2 is an exploded perspective view of the display device according to the present invention. An electronic device 1 shown in FIG. 1 is applied to, for example, an in-vehicle information device such as a navigation device or an audio device with a display. As shown in FIG. 2, the design panel 2 of the electronic device 1 is a box-shaped housing having an opening 2 a, the touch panel 3 is disposed in the opening 2 a, and the sheet metal frame 5 is disposed on the back side of the touch panel 3. A display panel 6, a sheet metal holder 7, a circuit board 8, an FPC holder 9, and a front chassis 10 are arranged in this order. The touch panel 3 is disposed such that the touch surface is exposed from the opening 2a of the design panel 2, and the FPC 4 is connected to the peripheral edge thereof. The sheet metal frame 5 is installed on the back side of the touch panel 3.

表示パネル６は、液晶表示パネルや有機ＥＬ（Ｅｌｅｃｔｒｏ−Ｌｕｍｉｎｅｓｃｅｎｃｅ）パネルなどの表示パネルであり、板金フレーム５および板金ホルダ７に収容されて開口部２ａから表示面が臨むよう配置される。すなわち、表示パネル６は、その背面側が板金ホルダ７に保持される。回路基板８は、板金ホルダ７における表示パネル６とは反対側に設置されている。   The display panel 6 is a display panel such as a liquid crystal display panel or an organic EL (Electro-Luminescence) panel, and is placed in the sheet metal frame 5 and the sheet metal holder 7 so that the display surface faces the opening 2a. That is, the back side of the display panel 6 is held by the sheet metal holder 7. The circuit board 8 is installed on the opposite side of the sheet metal holder 7 from the display panel 6.

ＦＰＣホルダ９は、ＦＰＣ４を保持する樹脂製のホルダであって、板金ホルダ７と回路基板８に跨がって設置される。ＦＰＣ４は、一端がタッチパネル３の周縁部に接続され、板金フレーム５および板金ホルダ７の外側に引き出され、他端がＦＰＣホルダ９に保持されて回路基板８に電気的に接続される。
フロントシャーシ１０は、表示パネル６の背面側に接地されて組み付けられる板金製のシャーシである。 The FPC holder 9 is a resin holder that holds the FPC 4, and is installed across the sheet metal holder 7 and the circuit board 8. One end of the FPC 4 is connected to the peripheral edge of the touch panel 3, pulled out to the outside of the sheet metal frame 5 and the sheet metal holder 7, and the other end is held by the FPC holder 9 and electrically connected to the circuit board 8.
The front chassis 10 is a sheet metal chassis that is grounded and assembled to the back side of the display panel 6.

図３は、従来のフロントシャーシを示す斜視図である。また、図４は、図１のＡ−Ａ線で切った従来の表示装置におけるフロントパネルとタッチパネルとの境界部の周辺の断面矢示図である。図３に示すように、従来のフロントシャーシ１０Ａは、略平板状の板金製のシャーシである。意匠パネル２からフロントシャーシ１０Ａまでの構造体は、フロントシャーシ１０Ａを介して電子機器１の本体部（不図示）に取り付けられる。   FIG. 3 is a perspective view showing a conventional front chassis. 4 is a cross-sectional arrow view of the periphery of the boundary between the front panel and the touch panel in the conventional display device cut along line AA in FIG. As shown in FIG. 3, the conventional front chassis 10A is a substantially flat sheet metal chassis. The structure from the design panel 2 to the front chassis 10A is attached to the main body (not shown) of the electronic device 1 via the front chassis 10A.

タッチパネル３の周縁部に一端が接続するＦＰＣ４は、図４（ａ）に示すように、板金フレーム５および板金ホルダ７の外側に引き出され、他端がＦＰＣホルダ９に保持されて回路基板８に電気的に接続される。また、タッチパネル３は、図４（ａ）に示すように、意匠パネル２の外側から開口部２ａに嵌合されて組み付けられる。   As shown in FIG. 4A, the FPC 4 whose one end is connected to the peripheral edge of the touch panel 3 is pulled out to the outside of the sheet metal frame 5 and the sheet metal holder 7, and the other end is held by the FPC holder 9 to the circuit board 8. Electrically connected. Moreover, the touch panel 3 is assembled | attached by fitting to the opening part 2a from the outer side of the design panel 2, as shown to Fig.4 (a).

上述した従来の表示装置では、タッチパネル３のタッチ面上で静電気が発生した場合、図４（ｂ）の矢印ａで示すように、この静電気は、タッチパネル３の周縁部と開口部２ａの内壁との境界部からタッチパネル３の背面およびＦＰＣ４を伝って回路基板８まで回り込んでしまう可能性がある。この場合、静電気によって回路基板８に実装された電子部品やＦＰＣ４に実装されたＩＣなどが破壊される。   In the conventional display device described above, when static electricity is generated on the touch surface of the touch panel 3, as shown by an arrow a in FIG. 4B, the static electricity is generated between the peripheral edge of the touch panel 3 and the inner wall of the opening 2a. There is a possibility that the circuit board 8 may go around from the boundary portion of the touch panel 3 along the back surface of the touch panel 3 and the FPC 4. In this case, the electronic component mounted on the circuit board 8 or the IC mounted on the FPC 4 is destroyed by static electricity.

そこで、この発明では、フロントシャーシの形状を改良することにより、タッチパネル３のタッチ面上で発生した静電気がＦＰＣ４を伝って回り込むことを防止している。
図５は、この発明の実施の形態１に係る表示装置のフロントシャーシを示す斜視図である。また、図６は、図１のＡ−Ａ線で切った実施の形態１に係る表示装置におけるフロントパネルとタッチパネルとの境界部の周辺の断面矢示図である。この発明に係る表示装置のフロントシャーシ１０には、図５に示すように、組み付け時にタッチパネル３の背面側に向けて突出する突出部１０ａが形成されている。 Therefore, in the present invention, by improving the shape of the front chassis, static electricity generated on the touch surface of the touch panel 3 is prevented from flowing around the FPC 4.
FIG. 5 is a perspective view showing the front chassis of the display device according to Embodiment 1 of the present invention. FIG. 6 is a cross-sectional arrow view of the periphery of the boundary between the front panel and the touch panel in the display device according to Embodiment 1 cut along line AA in FIG. As shown in FIG. 5, the front chassis 10 of the display device according to the present invention is formed with a protruding portion 10 a that protrudes toward the back side of the touch panel 3 when assembled.

突出部１０ａは、タッチパネル３の背面側に向けてフロントシャーシ１０から延設され、図６（ａ）に示すように、ＦＰＣ４よりもタッチパネル３の周縁部と意匠パネル２の開口部との境界部に近い位置まで突出している。なお、フロントシャーシ１０は、接地されているため、この突出部１０ａも接地電位となっている。
タッチパネル３のタッチ面上で発生した静電気は、図６（ｂ）の矢印ｂで示すように、タッチパネル３の背面を伝わるが、突出部１０ａがＦＰＣ４よりも境界部に近い位置まで突出しているため、ＦＰＣ４に伝わる前に突出部１０ａで接地される。
これにより、静電気が、ＦＰＣ４を介して内部の電子部品（例えば、ＦＰＣ４に実装されたＩＣ）に伝わることを防止できる。 The protrusion 10a extends from the front chassis 10 toward the back side of the touch panel 3, and as shown in FIG. 6A, the boundary between the peripheral edge of the touch panel 3 and the opening of the design panel 2 rather than the FPC 4. Projects to a position close to. Since the front chassis 10 is grounded, the protruding portion 10a is also at ground potential.
Static electricity generated on the touch surface of the touch panel 3 travels through the back surface of the touch panel 3 as indicated by an arrow b in FIG. 6B, but the protruding portion 10a protrudes to a position closer to the boundary than the FPC 4. , Before being transmitted to the FPC 4, it is grounded by the protrusion 10a.
Thereby, static electricity can be prevented from being transmitted to internal electronic components (for example, an IC mounted on the FPC 4) via the FPC 4.

なお、図５に示すように、突出部１０ａを、ＦＰＣ４よりも幅広の板状部としてもよい。例えば、フロントシャーシ１０から延出したＦＰＣ４よりも幅広の板状部を、タッチパネル３の背面側に向けて折り曲げて突出部１０ａを形成する。このように構成することで、ＦＰＣ４の幅方向から静電気が伝わることを防止でき、静電気がＦＰＣ４を介して内部の電子部品に伝わることを防止できる。   As shown in FIG. 5, the protruding portion 10 a may be a plate-like portion that is wider than the FPC 4. For example, the protruding portion 10 a is formed by bending a plate-like portion wider than the FPC 4 extending from the front chassis 10 toward the back side of the touch panel 3. With this configuration, it is possible to prevent static electricity from being transmitted from the width direction of the FPC 4, and it is possible to prevent static electricity from being transmitted to the internal electronic components via the FPC 4.

以上のように、この実施の形態１によれば、開口部２ａを有する意匠パネル２と、開口部２ａから表示面が臨む表示パネル６と、表示パネル６の表示面上に配置されて、周縁部にＦＰＣ４が接続されたタッチパネル３と、表示パネル６の背面側に接地されて組み付けられるフロントシャーシ１０と、タッチパネル３の背面側に向けてフロントシャーシ７から延設され、ＦＰＣ４よりもタッチパネル３の周縁部と意匠パネル２の開口部２ａとの境界部に近い位置まで突出した突出部１０ａとを備える。このように構成することで、タッチ面で発生した静電気が突出部１０ａで接地され、静電気がＦＰＣ４を介して内部の電子部品（例えば、ＦＰＣ４に実装されたＩＣ）に伝わることを防止できる。   As described above, according to the first embodiment, the design panel 2 having the opening 2a, the display panel 6 that faces the display surface from the opening 2a, and the display panel 6 are arranged on the display surface and have a peripheral edge. The touch panel 3 to which the FPC 4 is connected, the front chassis 10 that is grounded and assembled to the back side of the display panel 6, and extends from the front chassis 7 toward the back side of the touch panel 3. A protruding portion 10a protruding to a position close to the boundary portion between the peripheral edge portion and the opening 2a of the design panel 2 is provided. With this configuration, it is possible to prevent static electricity generated on the touch surface from being grounded by the protruding portion 10a and to be transmitted to internal electronic components (for example, an IC mounted on the FPC 4) via the FPC 4.

また、この実施の形態１によれば、突出部１０ａが、ＦＰＣ４よりも幅広の板状部であるので、ＦＰＣ４の幅方向から静電気が伝わることを防止でき、静電気がＦＰＣ４を介して内部の電子部品に伝わることを防止できる。   Further, according to the first embodiment, since the protruding portion 10a is a plate-like portion wider than the FPC 4, it is possible to prevent static electricity from being transmitted from the width direction of the FPC 4, and the static electricity can be transmitted through the FPC 4 to the internal electrons. It can be prevented from being transmitted to the parts.

なお、本発明はその発明の範囲内において、実施の形態の任意の構成要素の変形、もしくは実施の形態の任意の構成要素の省略が可能である。   In the present invention, any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.

１ 電子機器、２ 意匠パネル、２ａ 開口部、３ タッチパネル、４ ＦＰＣ、５ 板金フレーム、６ 表示パネル、７ 板金ホルダ、８ 回路基板、９ ＦＰＣホルダ、１０ フロントシャーシ、１０ａ 突出部。   DESCRIPTION OF SYMBOLS 1 Electronic device, 2 design panel, 2a opening part, 3 touch panel, 4 FPC, 5 sheet metal frame, 6 display panel, 7 sheet metal holder, 8 circuit board, 9 FPC holder, 10 front chassis, 10a protrusion part.

Claims (2)

開口部を有する筐体と、
前記開口部から表示面が臨む表示パネルと、
前記表示パネルの表示面上に配置されて、周縁部にフレキシブルプリント基板が接続されたタッチパネルと、
前記表示パネルの背面側に接地されて組み付けられるシャーシと、
前記タッチパネルの背面側に向けて前記シャーシから延設され、前記フレキシブルプリント基板よりも前記タッチパネルの周縁部と前記筐体の開口部との境界部に近い位置まで突出した突出部とを備える表示装置。 A housing having an opening;
A display panel facing a display surface from the opening;
A touch panel disposed on the display surface of the display panel and having a flexible printed circuit board connected to the peripheral edge;
A chassis that is grounded and assembled to the back side of the display panel;
A display device that includes a protruding portion that extends from the chassis toward the back side of the touch panel and protrudes to a position closer to the boundary between the peripheral portion of the touch panel and the opening of the housing than the flexible printed circuit board. . 前記突出部は、前記フレキシブルプリント基板よりも幅広の板状部であることを特徴とする請求項１記載の表示装置。   The display device according to claim 1, wherein the protruding portion is a plate-like portion that is wider than the flexible printed circuit board.
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JP2019159313A (en) * 2018-03-08 2019-09-19 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． Display device
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JP2019159313A (en) * 2018-03-08 2019-09-19 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． Display device
JP7265362B2 (en) 2018-03-08 2023-04-26 三星ディスプレイ株式會社 Display device
JP2021056775A (en) * 2019-09-30 2021-04-08 セイコーエプソン株式会社 Display device with electrostatic capacitance touch panel
JP7276053B2 (en) 2019-09-30 2023-05-18 セイコーエプソン株式会社 Display device with capacitive touch panel

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