WO2013018398A1 - Dispositif d'affichage mince - Google Patents

Dispositif d'affichage mince Download PDF

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Publication number
WO2013018398A1
WO2013018398A1 PCT/JP2012/058849 JP2012058849W WO2013018398A1 WO 2013018398 A1 WO2013018398 A1 WO 2013018398A1 JP 2012058849 W JP2012058849 W JP 2012058849W WO 2013018398 A1 WO2013018398 A1 WO 2013018398A1
Authority
WO
WIPO (PCT)
Prior art keywords
gasket
fixing
display module
angle
liquid crystal
Prior art date
Application number
PCT/JP2012/058849
Other languages
English (en)
Japanese (ja)
Inventor
則行 渋谷
努 藤江
友樹 天野
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2013018398A1 publication Critical patent/WO2013018398A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements

Definitions

  • the present invention relates to a thin display device, and more particularly to a thin display device in which all or a part of a front panel portion of a front cabinet is a metal panel.
  • resin products are used in the front cabinet of thin display devices such as liquid crystal televisions. Therefore, it is not necessary to consider conduction between the front cabinet and the metal part of the display module (liquid crystal display module) in consideration of unnecessary radiation.
  • metal members may be used for the front cabinet from the viewpoint of design strategy and the like. In that case, in consideration of unnecessary radiation, conduction between the metal part of the display module and the front cabinet is required.
  • a gasket is sandwiched between a metal front panel (front cabinet) and filter glass having an electromagnetic shield, and a conductive cloth including a cushion material is wound between the gasket and the PDP module. In this way, conduction is achieved.
  • the conventional method of fixing the front cabinet with a resin member has a variation in contact / conduction between the front cabinet and the metal part of the display module from the viewpoint of component accuracy and assembly accuracy. Instability may occur. As a result, it becomes necessary to assume the generation of unnecessary radiation that does not need to be considered in the past, particularly unstable unnecessary radiation.
  • the front cabinet and the display module are basically designed so as to be in contact with each other. However, due to variations in the parts of the front cabinet and the display module, contact is made not at the surface but at a point, or contact is not made, and securing of conduction becomes unstable. Such a situation is not preferable in terms of unnecessary radiation.
  • the present invention has been made in view of the above situation, and an object thereof is to provide a technique for solving the above problems.
  • the present invention is a thin display device in which a front cabinet has a metal surface, and includes a conductive angle portion that fixes the metal surface of the front cabinet and a display module, and a first of the front cabinet of the angle portion.
  • the conductive gasket disposed in either the fixed portion of the angle portion or the second fixed portion of the angle portion and the display module, and the angle portion in the region where the gasket is disposed.
  • a position restricting means for restricting movement of the gasket, and of the first or second fixing portion, the fixing portion on the side where the gasket is not arranged is screwed, and the gasket is in a fixed state. It is crushed by.
  • the display module may be a liquid crystal display module, and the second fixing portion may be provided in a backlight chassis of the liquid crystal display module.
  • the metal surface of the front cabinet, the angle portion, the gasket, and the display module may form a conductive loop in a state where the gasket is crushed and fixed.
  • unnecessary radiation deterioration can be suppressed by reliably bringing the front cabinet and the display module into contact with each other and stabilizing the conduction.
  • the outline of the present invention is as follows.
  • the gasket is affixed to the fixing bracket (fixing angle).
  • a flange is provided on the fixing bracket, and when the front cabinet is fixed, the flange and the back of the display module (backlight chassis) surround the gasket.
  • a liquid crystal display device liquid crystal television
  • a liquid crystal display module is exemplified as a display module.
  • a PDP display device and a PDP display module used therefor, an organic EL display device, and an organic EL display are used. It can also be applied to modules. This will be specifically described below.
  • FIG. 1 shows the appearance of the liquid crystal television 10 according to the present embodiment.
  • FIG. 1A shows a front view of the liquid crystal television 10.
  • FIG. 1B shows the back of the liquid crystal television 10 with the rear cabinet 40 removed.
  • the liquid crystal television 10 includes a frame-shaped front cabinet 20 so as to cover an outer peripheral portion on the front side of the liquid crystal display module 30 and a partial outer peripheral portion on the upper, lower, left, and right side surfaces when viewed from the front.
  • the metal backlight chassis 31 of the liquid crystal display module 30 is fixed to the front cabinet 20 by a fixing angle 50.
  • a fixing angle 50 there are five fixing angles 50 on the top surface side and three on the left and right side surfaces.
  • the fixing angle 50 is not provided on the bottom surface side, the fixing angle 50 may naturally be provided.
  • a gasket 90 is interposed in a fixing portion between the liquid crystal display module 30 and the fixing angle 50.
  • a fixed portion between the front cabinet 20 and the fixing angle 50 is also referred to as a first fixing portion
  • a fixing portion between the liquid crystal display module 30 and the fixing angle 50 is also referred to as a second fixing portion.
  • FIG. 2 is a partial cross-sectional view of the liquid crystal television 10, and in particular, enlarges an area related to the fixing structure (first and second fixing portions) of the front cabinet 20 and the liquid crystal display module 30 by the fixing angle 50.
  • FIG. 3 is a perspective view of a fixing portion by the fixing angle 50 provided on the upper side surface.
  • FIG. 4 is a perspective view of a fixing portion by the fixing angle 50 provided on the left side surface side.
  • FIG. 5 shows a perspective view of the fixing angle 50 and the gasket 90.
  • FIG. 6 shows the gasket 90.
  • the front cabinet 20 is made of a conductive metal such as an aluminum alloy.
  • the front surface portion 21 and the side surface portion 22 are subjected to surface treatment such as alumite treatment.
  • An angle mounting portion 23 is formed on a flat surface on the back side of the front cabinet 20, and a screw hole 24 is formed on the flat surface.
  • a fixing angle 50 panel fixing portion 54
  • the front cabinet 20 whole does not need to be a metal surface.
  • Part or all of the side surface portion 22 may be made of resin. That is, in the case where the front cabinet 20 is configured to have a metal surface (metal member) that requires measures from the viewpoint of unnecessary radiation, the technique shown in the present embodiment is effective.
  • the back side of the liquid crystal display module 30 constitutes a backlight chassis 31.
  • An angle fixing portion 32 is formed on the outer edge portion of the backlight chassis 31.
  • the angle fixing portion 32 is formed in a state of being recessed toward the front side in the drawing at the inner side portion of the outer edge portion (bezel portion 33) of the backlight chassis 31, that is, in a state where the thickness in the front-rear direction is reduced.
  • a fixing force (pressing force) of the fixing angle 50 acts on the angle fixing portion 32 via the gasket 90.
  • the rear cabinet 40 is fixed to the boss 38 with screws 82 on the back surface of the backlight chassis 31.
  • the fixing angle 50 is formed by, for example, pressing a steel plate into a predetermined shape.
  • the fixing angle 50 includes a gasket arrangement portion 51, a BL side angle main body 52, a panel side angle main body 53, and a panel fixing portion 54.
  • the panel fixing portion 54 is provided with a screw fixing hole in the center of a substantially rectangular plate-like body, and a screw 81 is provided in the screw hole 24 provided in the angle mounting portion 23 formed on the back side of the front cabinet 20. Fixed.
  • the panel-side angle main body 53 is formed so as to extend a predetermined length vertically from one side of the panel fixing portion 54 on the illustrated side. Here, the center part is cut off and the two legs are formed to extend. The panel-side angle main body 53 is long enough to straddle the bezel portion 33.
  • the BL side angle main body 52 is formed by bending vertically from the rear end of the panel side angle main body 53 in the module inner direction (the lower direction in FIG. 2). In the vicinity of the bent portion, the two legs of the panel-side angle body 53 are bent as they are, and are integrated from the middle (for example, the lower portion of about 5 mm) downward.
  • the gasket placement portion 51 is formed by bending vertically from the lower end of the BL side angle body 52 in the forward direction. The end portion of the gasket arrangement portion 51 is in contact with the angle fixing portion 32 or is slightly separated. A gasket 90 is arranged on the inner surface side of the gasket arrangement portion 51. At this time, a double-faced tape 98 is provided on the surface of the gasket 90 facing the BL-side angle body 52 for fixing to the BL-side angle body 52.
  • a flange portion 55 is formed to extend vertically so as to hold down both ends of the arranged gasket 90, that is, as a position regulating means.
  • the flange part 55 should just be a shape which the gasket 90 does not fall off.
  • the gasket 90 is configured by attaching a conductive cloth to the surface of a rectangular parallelepiped polyurethane foam.
  • the conductive cloth is a polyester woven cloth plated with copper and nickel.
  • the surface of the gasket 90 may have conductivity, or the entire gasket 90 may have conductivity. That is, any structure that can establish electrical connection between the fixing angle 50 and the liquid crystal display module 30 may be used.
  • a double-sided tape 98 is attached to a surface of the gasket 90 that faces the BL-side angle main body 52 so that the gasket 90 is fixed to the BL-side angle main body 52 when the gasket 90 is disposed in the gasket placement portion 51.
  • the double-sided tape 98 is more preferably a conductive tape (for example, an acrylic conductive adhesive).
  • the fixing angle 50 is attached to the front cabinet 20 and the liquid crystal display module 30, it is fixed so as to straddle the bezel portion 33 of the backlight chassis 31. Further, the gasket 90 is deformed so as to be crushed by a predetermined amount.
  • the dimensions of the fixing angle 50 and the like are set so that the height (H) direction is crushed by about 10 to 20%.
  • the height direction is crushed by about 1 to 5 mm.
  • the shape of the fixing angle 50 for fixing the steel front cabinet 20 can be improved, and the front cabinet 20 and the liquid crystal display module 30 can be reliably brought into contact with each other to stabilize conduction.
  • a stable conductive loop is formed by the front cabinet 20, the fixing angle 50, the gasket 90, and the liquid crystal display module 30, and deterioration of unnecessary radiation can be suppressed.
  • the LCD TV 10 becomes a large size of 70 inches or 80 inches
  • the front cabinet 20 is likely to be bent.
  • a rib or the like is provided to prevent the occurrence of bending and to reduce the amount of bending, but it is practically difficult to make it zero.
  • the gasket 90 it is necessary to increase the fixing force of the fixing angle 50, to fix the screws.
  • some measures such as increasing the thickness of the liquid crystal display module 30 are required. In order to deal with such problems, another technique has been demanded from the viewpoint of freedom of design and sharing of parts.
  • the gasket 90 is crushed to ensure conduction, so that the contact surface between the fixing angle 50 and the liquid crystal display module 30 via the gasket 90 can be secured sufficiently wide. Even if the contact surface is curved due to distortion or the like, the gasket 90 is crushed to form a contact surface that matches the curved surface. As a result, it is not necessary to set the fixing force strongly or fix the screws.
  • a sufficiently large pressing area in the angle fixing portion 32 of the liquid crystal display module 30 can be secured. That is, the force acting per unit area can be reduced.
  • the position of the angle fixing portion 32 slightly changes depending on the position where the fixing angle 50 is to be attached due to the shape of the liquid crystal display module 30 and the like, and is sandwiched by the fixing angle 50. Thickness (dimension) may change. In that case, the difference in dimensions can be absorbed by adjusting the amount by which the gasket 90 is crushed. As a result, the fixing angle 50 can be shared. Further, by adjusting the amount of crushing the gasket 90 or adjusting the shape of the gasket 90, the fixing angle 50 can be used in common between the liquid crystal televisions 10 of different sizes.
  • vibration due to resonance or the like can be suppressed by using the gasket 90.
  • the front cabinet 20 is made of a metal material
  • noise is generated due to secular change, power supply driving, or the like
  • the sound becomes greatly unpleasant compared to the case of the resin front cabinet.
  • such noise can be prevented by using the gasket 90.
  • by changing the gasket 90 it is possible to cope with a plurality of resonance frequencies. Furthermore, even if the resonance frequency assumed for the liquid crystal television 10 changes due to secular change, measures can be easily taken.
  • the present invention has been described based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to combinations of the respective components and the like, and such modifications are within the scope of the present invention.
  • the fixing using the gasket 90 is on the liquid crystal display module 30 side, but may be on the front cabinet 20 side.
  • the BL side angle main body 52 may be provided with a needle-like shape that pierces the conductive cloth of the gasket 90.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne une technologie qui améliore la forme d'un dispositif de fixation métallique qui fixe un meuble avant métallique, qui met de manière fiable le meuble et un module d'affichage en contact au niveau des surfaces de ceux-ci, et qui, en stabilisant la conduction, supprime toute aggravation de rayonnement inutile. Une télévision à cristaux liquides (10) comporte le meuble avant en forme de cadre (20), de sorte que celui-ci recouvre la section périphérique extérieure du côté surface avant d'un module d'affichage à cristaux liquides (30) et une partie de la section périphérique extérieure de la partie supérieure, la partie inférieure et les côtés de surface gauche et droite. Un châssis métallique à contre-jour (31) pour le module d'affichage à cristaux liquides (30) est fixé sur le meuble avant (20) selon un angle de fixation (50). Lors de la fixation, un joint d'étanchéité (90) est intercalé dans la section de fixation entre le module d'affichage à cristaux liquides (30) et l'angle de fixation (50). Le joint d'étanchéité (90) est fixé dans un état écrasé.
PCT/JP2012/058849 2011-08-01 2012-04-02 Dispositif d'affichage mince WO2013018398A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-168366 2011-08-01
JP2011168366 2011-08-01

Publications (1)

Publication Number Publication Date
WO2013018398A1 true WO2013018398A1 (fr) 2013-02-07

Family

ID=47628940

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/058849 WO2013018398A1 (fr) 2011-08-01 2012-04-02 Dispositif d'affichage mince

Country Status (1)

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WO (1) WO2013018398A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107705726A (zh) * 2014-01-22 2018-02-16 Lg 电子株式会社 显示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08162028A (ja) * 1994-12-02 1996-06-21 Mitsubishi Electric Corp プラズマディスプレイのマウント装置
JPH10282896A (ja) * 1997-04-07 1998-10-23 Mitsubishi Electric Corp 表示装置
JP2001318613A (ja) * 2000-05-09 2001-11-16 Canon Inc 画像表示装置
JP2002372917A (ja) * 2001-06-15 2002-12-26 Matsushita Electric Ind Co Ltd プラズマディスプレイ装置
JP2006047979A (ja) * 2004-06-29 2006-02-16 Canon Inc 画像表示装置および画像表示装置の製造方法
JP2008256776A (ja) * 2007-04-02 2008-10-23 Matsushita Electric Ind Co Ltd プラズマディスプレイ装置
WO2011058846A1 (fr) * 2009-11-16 2011-05-19 シャープ株式会社 Dispositif d'affichage a cristaux liquides

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08162028A (ja) * 1994-12-02 1996-06-21 Mitsubishi Electric Corp プラズマディスプレイのマウント装置
JPH10282896A (ja) * 1997-04-07 1998-10-23 Mitsubishi Electric Corp 表示装置
JP2001318613A (ja) * 2000-05-09 2001-11-16 Canon Inc 画像表示装置
JP2002372917A (ja) * 2001-06-15 2002-12-26 Matsushita Electric Ind Co Ltd プラズマディスプレイ装置
JP2006047979A (ja) * 2004-06-29 2006-02-16 Canon Inc 画像表示装置および画像表示装置の製造方法
JP2008256776A (ja) * 2007-04-02 2008-10-23 Matsushita Electric Ind Co Ltd プラズマディスプレイ装置
WO2011058846A1 (fr) * 2009-11-16 2011-05-19 シャープ株式会社 Dispositif d'affichage a cristaux liquides

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107705726A (zh) * 2014-01-22 2018-02-16 Lg 电子株式会社 显示装置
EP3276403A3 (fr) * 2014-01-22 2018-05-09 Lg Electronics Inc. Afficheur
US10064294B2 (en) 2014-01-22 2018-08-28 Lg Electronics Inc. Display device having display panel and a case that covers an edge of the display panel
US10194542B2 (en) 2014-01-22 2019-01-29 Lg Electronics Inc. Display device having display panel and a case that covers an edge of the display panel
EP3540502A2 (fr) 2014-01-22 2019-09-18 LG Electronics Inc. Afficheur
EP3540502A3 (fr) * 2014-01-22 2019-11-13 LG Electronics Inc. Afficheur
US10681825B2 (en) 2014-01-22 2020-06-09 Lg Electronics Inc. Display device having display panel and a case that covers an edge of the display panel
CN107705726B (zh) * 2014-01-22 2020-09-08 Lg 电子株式会社 显示装置
EP3933493A1 (fr) 2014-01-22 2022-01-05 LG Electronics Inc. Dispositif d'affichage
EP4271147A2 (fr) 2014-01-22 2023-11-01 LG Electronics Inc. Dispositif d'affichage
EP4271147A3 (fr) * 2014-01-22 2024-01-03 LG Electronics Inc. Dispositif d'affichage

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