JP2009288361A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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JP2009288361A
JP2009288361A JP2008138892A JP2008138892A JP2009288361A JP 2009288361 A JP2009288361 A JP 2009288361A JP 2008138892 A JP2008138892 A JP 2008138892A JP 2008138892 A JP2008138892 A JP 2008138892A JP 2009288361 A JP2009288361 A JP 2009288361A
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liquid crystal
tft substrate
display device
crystal display
crystal panel
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JP5241327B2 (en
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Yoshihiro Tsuda
義弘 津田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which can be easily repaired when foreign matters or dust is detected between a liquid crystal panel and a backlight enclosure. <P>SOLUTION: The liquid crystal display device includes the liquid crystal panel and the backlight enclosure. The liquid crystal panel includes a TFT substrate. The backlight enclosure 5 includes: a fixing surface 5a on which the TFT substrate is disposed; positioning parts 5b which are formed on the fixing surface 5a and position three sides of the TFT substrate; engagement claws 5d which are formed on inside surfaces of the positioning parts 5b and are engaged with a peripheral edge parts of the TFT substrate positioned and disposed on the fixing surface 5a; and movable members 5e which are disposed so as to freely project from and retreat to the inside surfaces 5c of the positioning parts 5b and position the other one side of the TFT substrate in a state of projecting and allows the TFT substrate to be inserted onto or removed from on the fixing surface 5a in a surface direction of the fixing surface 5a in a state of retreating. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ノート型やデスクトップ型のパソコン、テレビ、モニター、携帯電話などの移動端末などに用いられる液晶表示装置に関するものである。   The present invention relates to a liquid crystal display device used for mobile terminals such as notebook or desktop personal computers, televisions, monitors, and mobile phones.

従来の液晶表示装置では、液晶パネルとバックライト筐体との相互固定は、バックライト筐体側に付けられた両面テープにより行われている（例えば特許文献１）。   In a conventional liquid crystal display device, the liquid crystal panel and the backlight casing are fixed to each other by a double-sided tape attached to the backlight casing (for example, Patent Document 1).

特開平７−２１８９１３号公報JP 7-218913 A

従来の液晶表示装置では、液晶パネルとバックライト筐体との相互固定は、両面テープで行われるので、その固定後に液晶パネルとバックライトとの間に異物やゴミなどが検出された場合は、手直しが容易に行えず、バックライト筐体の交換、若しくは、液晶パネルとバックライト筐体の双方を不良として破棄していた。   In a conventional liquid crystal display device, the liquid crystal panel and the backlight housing are fixed to each other with a double-sided tape. If foreign matter or dust is detected between the liquid crystal panel and the backlight after the fixing, Reworking was not easy and the backlight housing was replaced or both the liquid crystal panel and the backlight housing were discarded as defective.

液晶表示装置は、その製造方法に関する技術の進展に伴い、低コスト化が進んでおり、僅かでも仕損じや無駄を減らすことが望まれ、そのためにも不良の手直しは必須となっている。   The cost of liquid crystal display devices has been reduced along with the progress of technology relating to the manufacturing method thereof, and it is desired to reduce defects and waste even a little. For this reason, it is essential to correct defects.

この発明は、上記のような問題点を解決するためになされたものであり、液晶パネルとバックライト筐体との間に異物やゴミが検出された場合に容易に手直しができる液晶表示装置を提供することにある。   The present invention has been made to solve the above-described problems, and a liquid crystal display device that can be easily repaired when foreign matter or dust is detected between the liquid crystal panel and the backlight housing. It is to provide.

上記課題を解決する為には、請求項１に記載の発明は、液晶パネルとバックライト筐体とを備え、前記液晶パネルは、カラーフィルタ基板と、その一方主面の周縁部が露出する様にその一方主面に前記カラーフィルタ基板が配設されたＴＦＴ基板と、を備え、前記バックライト筐体は、前記ＴＦＴ基板が配置される固定面と、前記固定面上に形成され、前記固定面上に位置決め配置された前記ＴＦＴ基板の前記周縁部に係合する係合爪と、を備えるものである。   In order to solve the above problems, the invention described in claim 1 includes a liquid crystal panel and a backlight housing, and the liquid crystal panel has a color filter substrate and a peripheral portion of one main surface thereof exposed. A TFT substrate having the color filter substrate disposed on one main surface thereof, and the backlight housing is formed on the fixed surface on which the TFT substrate is disposed and the fixed surface. And an engaging claw that engages with the peripheral edge of the TFT substrate positioned on the surface.

請求項１に記載の発明によれば、液晶パネルのバックライト筐体への固定・取り外しが自在に行え、これにより液晶パネルとバックライト筐体との間に異物やゴミが検出された場合に容易に手直しができる。   According to the first aspect of the present invention, the liquid crystal panel can be freely fixed to and detached from the backlight housing, and when foreign matter or dust is detected between the liquid crystal panel and the backlight housing. It can be easily reworked.

実施の形態１．
この実施の形態に係る液晶表示装置１は、液晶パネル３（図１）と、バックライト筐体５（図２）とを備えている。 Embodiment 1 FIG.
The liquid crystal display device 1 according to this embodiment includes a liquid crystal panel 3 (FIG. 1) and a backlight housing 5 (FIG. 2).

液晶パネル３は、図１の様に、ＴＦＴガラス基板（ＴＦＴ基板）３１と、ＴＦＴガラス基板３１に配設されたＣＦ（カラーフィルタ）ガラス基板（カラーフィルタ基板）３２とを備えている。   As illustrated in FIG. 1, the liquid crystal panel 3 includes a TFT glass substrate (TFT substrate) 31 and a CF (color filter) glass substrate (color filter substrate) 32 disposed on the TFT glass substrate 31.

ＣＦガラス基板３２は、矩形形状の板状に形成されている。   The CF glass substrate 32 is formed in a rectangular plate shape.

ＴＦＴガラス基板３１は、ＣＦガラス基板３２よりも大きい矩形形状の板状に形成されている。ＴＦＴガラス基板３１の一方主面には、その周縁部３１ａ，３１ｂ，３１ｃを露出する様にＣＦガラス基板３２が配設されると共に、その一側の周縁部３１ｃにＦＰＣ（フレキシブルプリント基板）３３が配設される。   The TFT glass substrate 31 is formed in a rectangular plate shape larger than the CF glass substrate 32. A CF glass substrate 32 is disposed on one main surface of the TFT glass substrate 31 so as to expose the peripheral portions 31a, 31b, and 31c, and an FPC (flexible printed circuit board) 33 is provided on one peripheral portion 31c. Is disposed.

バックライト筐体５は、図２の様に、例えば矩形形状の板状に形成されており、その一方主面５ａが液晶パネル３が固定される固定面になっている。この固定面５ａには、ＴＦＴガラス基板３１の３辺３１ｄ、３１ｅの位置を位置決めする位置決め部５ｂが凸状形成されている。ここでは、位置決め部５ｂは、固定面５ａの３辺に沿って凸条形成されている。   As shown in FIG. 2, the backlight housing 5 is formed in, for example, a rectangular plate shape, and one main surface 5a is a fixed surface to which the liquid crystal panel 3 is fixed. On the fixed surface 5a, a positioning portion 5b for positioning the positions of the three sides 31d and 31e of the TFT glass substrate 31 is formed in a convex shape. Here, the positioning part 5b is convexly formed along three sides of the fixed surface 5a.

また位置決め部５ｂの内側面５ｃには、その内側面５ｃの長手方向に沿って、ＴＦＴガラス基板３１の周縁部３１ｂ，３１ｃに係合する係合爪５ｄが凸状形成されている。尚、位置決め部５ｂ−２の内側面５ｃには、係合爪５ｄは無くても構わない。   Further, on the inner side surface 5c of the positioning portion 5b, an engaging claw 5d that engages with the peripheral portions 31b and 31c of the TFT glass substrate 31 is formed in a convex shape along the longitudinal direction of the inner side surface 5c. The engaging claw 5d may not be provided on the inner side surface 5c of the positioning portion 5b-2.

またバックライト筐体５には、位置決め部５ｂの内側面５ｃから突出・後退自在に可動する様に可動部材５ｅが配設されている。ここでは、可動部材５ｅは、位置決め部５ｂの端部（ここでは両端部）において、位置決め部５ｂの内側面５ｃに垂直な方向に突出・後退自在に可動する様に配設されている。可動部材５ｅは、その突出状態で、位置決め部５ｂの内側面５ｃから突出して、ＴＦＴガラス基板３１の残りの１辺３１ｆの位置を位置決めし、その後退状態で、位置決め部５ｂの内側面５ｃの後側に後退して、固定面５ａの面方向からのＴＦＴガラス基板３１の固定面５ａ上への挿入・取り外しを可能とする。尚、図５では、可動部材５ｅは、後退状態になっている。   Further, the backlight housing 5 is provided with a movable member 5e so as to be movable from the inner side surface 5c of the positioning portion 5b so as to protrude and retract. Here, the movable member 5e is disposed at the end portion (here, both end portions) of the positioning portion 5b so as to be movable freely protruding and retracting in a direction perpendicular to the inner side surface 5c of the positioning portion 5b. The movable member 5e protrudes from the inner side surface 5c of the positioning portion 5b in the protruding state, positions the remaining one side 31f of the TFT glass substrate 31, and in the retracted state, the movable member 5e moves to the inner side surface 5c of the positioning portion 5b. Retreating to the rear side, the TFT glass substrate 31 can be inserted / removed onto / from the fixed surface 5a from the surface direction of the fixed surface 5a. In FIG. 5, the movable member 5e is in a retracted state.

次に図１〜図４に基づき液晶パネル３とバックライト筐体５との相互固定の仕方を説明する。   Next, a method of mutually fixing the liquid crystal panel 3 and the backlight housing 5 will be described with reference to FIGS.

図２の様にバックライト筐体５の可動部材５ｅを後退させる。そして図３の様に、液晶パネル３を、位置決め部５ｂの無い側（可動部材５ｅ側）から、バックライト筐体５の固定面５ａ上を摺動させて、固定面５ａ上に挿入配置させる。   As shown in FIG. 2, the movable member 5e of the backlight housing 5 is retracted. Then, as shown in FIG. 3, the liquid crystal panel 3 is slid on the fixed surface 5a of the backlight housing 5 from the side without the positioning portion 5b (movable member 5e side) and inserted and disposed on the fixed surface 5a. .

より詳細には、ＴＦＴガラス基板５を、ＣＦガラス基板３２側を上側に向け、且つその両辺３１ｅをバックライト筐体５の両側の位置決め部５ｂ−１の内側に配置させる様にして、その辺（ＦＰＣ３３の無い側の辺）３１ｄ側から、バックライト筐体５の固定面５ａ上を摺動させて、その辺３１ｄが位置決め部５ｂ−２に当接するまで押し込む。   More specifically, the TFT glass substrate 5 is arranged so that the CF glass substrate 32 side faces upward and both sides 31e are arranged inside the positioning portions 5b-1 on both sides of the backlight housing 5. (Side side without FPC 33) From the side 31d, slide on the fixed surface 5a of the backlight housing 5 and push it in until the side 31d contacts the positioning portion 5b-2.

そして図４の様に、バックライト筐体５の可動部材５を可動させて突出状態にする。この状態で、液晶パネル３は、位置決め部５ｂおよび可動部材５ｅにより固定面５ａの面方向の位置が位置決めされると共に、係合爪５ｄがＴＦＴガラス基板３１の周縁部３１ａ，３１ｂに係合して固定面５ａ上に固定される。   Then, as shown in FIG. 4, the movable member 5 of the backlight housing 5 is moved to a protruding state. In this state, the liquid crystal panel 3 is positioned in the surface direction of the fixed surface 5a by the positioning portion 5b and the movable member 5e, and the engaging claw 5d is engaged with the peripheral portions 31a and 31b of the TFT glass substrate 31. To be fixed on the fixing surface 5a.

そしてこの状態で可動部材５ｅを後退させて、液晶パネル３をバックライト筐体５から引き抜くと、液晶パネル３をバックライト筐体５から取り外す事ができる。   In this state, when the movable member 5 e is moved backward and the liquid crystal panel 3 is pulled out from the backlight housing 5, the liquid crystal panel 3 can be removed from the backlight housing 5.

以上の様に構成された液晶表示装置によれば、バックライト筐体５の固定面５ａに配設された係合爪５ｄが、固定面５ａに位置決め配置されたＴＦＴガラス基板３１の周縁部３１ａ，３１ｂが係合するので、液晶パネル３のバックライト筐体５への固定・取り外しが自在に行え、これにより液晶パネル３とバックライト筐体５との間に異物やゴミが検出された場合に容易に手直しができる。   According to the liquid crystal display device configured as described above, the engaging claw 5d disposed on the fixed surface 5a of the backlight housing 5 has the peripheral edge portion 31a of the TFT glass substrate 31 positioned on the fixed surface 5a. , 31b can be engaged, so that the liquid crystal panel 3 can be freely fixed to and detached from the backlight housing 5 so that foreign matter or dust is detected between the liquid crystal panel 3 and the backlight housing 5. Can be easily reworked.

またバックライト筐体５の固定面５ａ上に、ＴＦＴガラス基板３１の３辺３１ｄ，３１ｅの位置を位置決めする位置決め部５ｄを備えるので、バックライト筐体５の固定面５ａ上に配置されたＴＦＴガラス基板３１の３辺３１ｄ，３１ｅの位置を位置決めできる。   Further, since the positioning portion 5d for positioning the three sides 31d and 31e of the TFT glass substrate 31 is provided on the fixed surface 5a of the backlight housing 5, the TFT disposed on the fixed surface 5a of the backlight housing 5 is provided. The positions of the three sides 31d and 31e of the glass substrate 31 can be positioned.

また位置決め部５ｂの内側面５ｃから突出・後退自在に可動する様に可動部材５ｅが配設され、その突出状態で、ＴＦＴ基板３１の残りの１辺３１ｆの位置を位置決めし、その後退状態で、バックライト筐体５の固定面５ａの面方向からのＴＦＴ基板３１の固定面５ａ上への挿入・取り外しを可能とするので、液晶パネル３の取り出しを可能にしつつＴＦＴガラス基板３１の残りの１辺３１ｆの位置を位置決めできる。   In addition, a movable member 5e is provided so as to be movable in a projecting and retracting manner from the inner side surface 5c of the positioning portion 5b. In the projecting state, the position of the remaining one side 31f of the TFT substrate 31 is positioned. Since the TFT substrate 31 can be inserted into and removed from the fixed surface 5a from the surface direction of the fixed surface 5a of the backlight housing 5, the remaining portion of the TFT glass substrate 31 can be removed while allowing the liquid crystal panel 3 to be removed. The position of one side 31f can be positioned.

また可動部材５ｅは、位置決め部５の端部において位置決め部５の内側面５ｃに垂直な方向に可動する様に配設されるので、その突出状態において、ＴＦＴガラス基板３１の辺３１ｆの位置をしっかりと位置決めできる。   Further, since the movable member 5e is disposed so as to move in the direction perpendicular to the inner surface 5c of the positioning portion 5 at the end portion of the positioning portion 5, the position of the side 31f of the TFT glass substrate 31 in the protruding state is set. Can be positioned firmly.

実施の形態１に係る液晶表示装置の液晶パネル３の平面図である。3 is a plan view of a liquid crystal panel 3 of the liquid crystal display device according to Embodiment 1. FIG. 実施の形態１に係る液晶表示装置のバックライト筐体５の平面図である。3 is a plan view of a backlight housing 5 of the liquid crystal display device according to Embodiment 1. FIG. 実施の形態１に係る液晶表示装置の液晶パネル３とバックライト筐体５との相互固定の仕方を説明する側面図である。4 is a side view for explaining how to fix the liquid crystal panel 3 and the backlight housing 5 of the liquid crystal display device according to Embodiment 1 to each other. FIG. 実施の形態１に係る液晶表示装置の液晶パネル３とバックライト筐体５との相互固定状態の平面図である。FIG. 3 is a plan view of the liquid crystal panel 3 and the backlight housing 5 of the liquid crystal display device according to Embodiment 1 in a mutually fixed state.

符号の説明Explanation of symbols

３ 液晶パネル
５ バックライト筐体
５ａ 固定面
５ｂ 位置決め部
５ｃ 内側面
５ｄ 係合爪
５ｅ 可動部材
３１ ＴＦＴガラス基板
３１ａ，３１ｄ，３１ｃ 周縁部
３１ｄ，３１ｅ，３１ｆ 辺
３２ ＣＦガラス基板
３３ フレキシブルプリント基板 3 LCD panel 5 Backlight housing 5a Fixed surface
5b Positioning portion 5c Inner side surface 5d Engaging claw 5e Movable member 31 TFT glass substrate 31a, 31d, 31c Peripheral portion 31d, 31e, 31f Side 32 CF glass substrate 33 Flexible printed circuit board

Claims (4)

液晶パネルとバックライト筐体とを備え、
前記液晶パネルは、
カラーフィルタ基板と、
その一方主面の周縁部が露出する様にその一方主面に前記カラーフィルタ基板が配設されたＴＦＴ基板と、
を備え、
前記バックライト筐体は、
前記ＴＦＴ基板が配置される固定面と、
前記固定面上に形成され、前記固定面上に位置決め配置された前記ＴＦＴ基板の前記周縁部に係合する係合爪と、
を備えることを特徴とする液晶表示装置。 It has a liquid crystal panel and a backlight housing,
The liquid crystal panel is
A color filter substrate;
A TFT substrate in which the color filter substrate is disposed on one main surface so that a peripheral portion of the one main surface is exposed;
With
The backlight housing is
A fixed surface on which the TFT substrate is disposed;
An engaging claw that is formed on the fixed surface and engages with the peripheral edge of the TFT substrate positioned on the fixed surface;
A liquid crystal display device comprising: 前記バックライト筐体の前記固定面上に形成され、前記ＴＦＴ基板の３辺の位置を位置決めする位置決め部を更に備えることを特徴とする請求項１に記載の液晶表示装置。   The liquid crystal display device according to claim 1, further comprising a positioning portion that is formed on the fixed surface of the backlight housing and positions three sides of the TFT substrate. 前記位置決め部の内側面から突出・後退自在に可動する様に配設され、その突出状態で、前記ＴＦＴ基板の残りの１辺の位置を位置決めし、その後退状態で、前記固定面の面方向からの前記ＴＦＴ基板の前記固定面上への挿入・取り外しを可能とする可動部材を更に備えることを特徴とする請求項２に記載の液晶表示装置。   It is arranged so as to be able to project and retract freely from the inner surface of the positioning part, and in the projecting state, the position of the remaining one side of the TFT substrate is positioned, and in the retracted state, the surface direction of the fixed surface The liquid crystal display device according to claim 2, further comprising a movable member that enables insertion and removal of the TFT substrate from and to the fixed surface. 前記可動部材は、前記位置決め部の端部において前記位置決め部の内側面に垂直な方向に可動する様に配設されることを特徴とする請求項３に記載の液晶表示装置。   The liquid crystal display device according to claim 3, wherein the movable member is disposed so as to be movable in a direction perpendicular to an inner surface of the positioning portion at an end portion of the positioning portion.
JP2008138892A 2008-05-28 2008-05-28 Liquid crystal display Expired - Fee Related JP5241327B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2012199658A (en) * 2011-03-18 2012-10-18 Fujitsu Ltd Electronic apparatus
US9232032B2 (en) 2011-03-18 2016-01-05 Fujitsu Limited Electronic device and communication device

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