JP4646897B2 - Backlight and display device - Google Patents

Backlight and display device Download PDF

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JP4646897B2
JP4646897B2 JP2006327438A JP2006327438A JP4646897B2 JP 4646897 B2 JP4646897 B2 JP 4646897B2 JP 2006327438 A JP2006327438 A JP 2006327438A JP 2006327438 A JP2006327438 A JP 2006327438A JP 4646897 B2 JP4646897 B2 JP 4646897B2
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optical sheet
housing
backlight
housing member
accommodating
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JP2008140709A (en
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正也 香月
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Description

本発明は、バックライト及びバックライトを備えた表示装置に関する。   The present invention relates to a backlight and a display device including the backlight.

例えば液晶テレビ等の表示装置は、画像を表示する画像表示面を前側に有する表示パネルの後側にバックライトと、該バックライトを支持するシャーシと、該シャーシの後側に取付けられた電気部品とを備えている。   For example, a display device such as a liquid crystal television includes a backlight on the rear side of a display panel having an image display surface for displaying an image on the front side, a chassis that supports the backlight, and electrical components attached to the rear side of the chassis. And.

図６は従来の表示装置の全体の分解斜視図であり、図７は従来の表示装置の一部を拡大した断面図である。   FIG. 6 is an exploded perspective view of the entire conventional display device, and FIG. 7 is an enlarged cross-sectional view of a part of the conventional display device.

図示した従来の表示装置は画像を表示する表示パネル１０１と、該表示パネル１０１の後側に配されたバックライト１０２と、該バックライト１０２を支持するシャーシ１０３と、該シャーシ１０３の後側に取付けられたインバータ回路基板等の電気部品１０４と、表示パネル１０１の前側周縁部を取り囲むフロントキャビネット１０５と、バックライト１０２及びシャーシ１０３の後側を覆うバックキャビネット１０６と、シャーシ１０３に取付けられ表示パネル１０１及びバックライト１０２を起立状態で支持するスタンド１０７とを備える。   The conventional display apparatus shown in the figure includes a display panel 101 for displaying an image, a backlight 102 disposed on the rear side of the display panel 101, a chassis 103 for supporting the backlight 102, and a rear side of the chassis 103. The attached electrical component 104 such as an inverter circuit board, the front cabinet 105 surrounding the front peripheral edge of the display panel 101, the back cabinet 106 covering the back side of the backlight 102 and the chassis 103, and the display panel attached to the chassis 103. 101 and a stand 107 that supports the backlight 102 in an upright state.

バックライト１０２は反射偏光板、プリズムシート、拡散シート及び拡散板からなる光学シート１１０と、両端部に電極を有する複数の蛍光管１０７，１０７…及び蛍光管１０７，１０７…が放射した光を光学シート１１０側に反射させる反射板１０８を備え、蛍光管１０７，１０７…が表示パネル１０１と平行的に並置されている。   The backlight 102 optically radiates light emitted from a plurality of fluorescent tubes 107, 107... And fluorescent tubes 107, 107... Having an electrode at both ends, an optical sheet 110 made of a reflective polarizing plate, a prism sheet, a diffusion sheet and a diffusion plate. A reflecting plate 108 that reflects on the sheet 110 side is provided, and fluorescent tubes 107, 107... Are juxtaposed in parallel with the display panel 101.

シャーシ１０３に螺子止めされたシート受部１０９は反射板１０８の周縁部を挟んで光学シート１１０を支持している。光学シート１１０は、光学シート１１０の周縁部が押圧体１１１にてシート受部１０９へ押圧されることによって固定されている。   The sheet receiving portion 109 screwed to the chassis 103 supports the optical sheet 110 with the peripheral edge portion of the reflection plate 108 interposed therebetween. The optical sheet 110 is fixed by pressing the peripheral edge portion of the optical sheet 110 to the sheet receiving portion 109 by the pressing body 111.

ところが、従来の表示装置においては、光学シート１１０が押圧体１１１の押圧力のみによって固定されているので、運搬中に発生する振動、衝撃等が原因で光学シート１１０の位置にズレが発生する恐れがあると言った問題があった。このような問題を解決するために、特許文献１では光源及び光学シートを収容する支持枠を備え、該支持枠の側面に係止部を設けて該係止部を用いて前記支持枠を係止することにより、光学シート等の位置ズレを防止できる液晶表示装置を提案している。   However, in the conventional display device, since the optical sheet 110 is fixed only by the pressing force of the pressing body 111, the position of the optical sheet 110 may be displaced due to vibration, impact, etc. generated during transportation. There was a problem that said there was. In order to solve such a problem, Patent Document 1 includes a support frame that accommodates a light source and an optical sheet, and a locking portion is provided on a side surface of the support frame, and the support frame is engaged using the locking portion. The liquid crystal display device which can prevent position shift of an optical sheet etc. by stopping is proposed.

また、従来の液晶表示装置は、電源交換等のメンテナンスの場合、シャーシ１０３及びシート受部１０９を外す必要があり、反射偏光板、プリズムシート、拡散シート及び拡散板からなる光学シート１１０がばらけて空気中の埃等が混入されるといった問題があった。このような問題を解決するために、特許文献２では光学シート１１０を一体的に保持するシート保持用シャーシを備えた液晶表示装置を提案している。
特開２００６―１２８０３６号公報 特開２００５―２０２０３６号公報 Further, in the case of maintenance such as power supply replacement, the conventional liquid crystal display device needs to remove the chassis 103 and the sheet receiving unit 109, and the optical sheet 110 including the reflective polarizing plate, the prism sheet, the diffusion sheet, and the diffusion plate is dispersed. There is a problem that dust in the air is mixed. In order to solve such a problem, Patent Document 2 proposes a liquid crystal display device including a sheet holding chassis that holds the optical sheet 110 integrally.
JP 2006-128036 A Japanese Patent Laid-Open No. 2005-202036

一方、近年表示画面、つまり表示パネルが大型化されており、表示装置の組み立てライン上においては、大型の光学シートを取り扱うこととなった。しかし、このような光学シートの大型化は組み立て作業効率の低下を招いていた。   On the other hand, the display screen, that is, the display panel has been enlarged in recent years, and a large optical sheet has been handled on the assembly line of the display device. However, such an increase in the size of the optical sheet has caused a reduction in assembly work efficiency.

つまり、光学シートが大型化されることによって該光学シートが反り易いうえ、強度が劣るので、丁寧な取り扱いが要求されるようになり、通常複数のシート状の構成部品を積層して行う光学シートの組み立て工程に遅延を招くのである。一方、各構成部品には取り扱いの過程で発生する損傷から該構成部品を保護するための保護膜が付されており、前記積層の際に前記保護層を剥がす作業を行うが、光学シートの大型化によって前記作業に係る所要時間が長くなり、さらに組み立て工程が遅延される結果となった。   In other words, since the optical sheet is easily warped and the strength is inferior due to the increase in size of the optical sheet, careful handling is required, and the optical sheet is usually formed by laminating a plurality of sheet-like components. This delays the assembly process. On the other hand, each component is provided with a protective film for protecting the component from damage that occurs during handling, and the protective layer is peeled off during the lamination. As a result, the time required for the work is increased, and the assembly process is delayed.

このような問題の解決方法の一つとしては、各構成部品が積層された光学シート（以下、既製光学シートという）を予め用意しておき、バックライト又は表示装置の組み立てラインの光学シートの積層工程で、前記既製光学シートを組み立てる方法がある。   As one of the solutions to such a problem, an optical sheet in which each component is laminated (hereinafter referred to as a ready-made optical sheet) is prepared in advance, and an optical sheet in an assembly line of a backlight or a display device is laminated. There is a method of assembling the ready-made optical sheet in the process.

一方、このような方法の実現のためには、各構成部品の積層状態を保持したまま前記既製光学シートを組み立てラインまで運搬する必要がある。しかしながら、上述の特許文献１の支持枠及び特許文献２のシート保持用シャーシは、何れも収容又は保持された光学シートの厚み方向の一面が開口しており前記光学シートが前記一面から脱落する恐れがあり、前記光学シートを収容又は保持した状態での運搬が困難である。特に特許文献２のシート保持用シャーシは、保持された光学シートの面に沿う方向の大きさが前記光学シートより大きいので、運搬時に生じる振動、衝撃等により、既製光学シート又は各構成部品が面に沿う方向に摺動し、損傷を蒙る恐れもある。   On the other hand, in order to realize such a method, it is necessary to transport the ready-made optical sheet to the assembly line while maintaining the laminated state of each component. However, in the above-described support frame of Patent Document 1 and the sheet holding chassis of Patent Document 2, one surface in the thickness direction of the optical sheet accommodated or held is open, and the optical sheet may drop from the one surface. Therefore, it is difficult to carry the optical sheet in a state where the optical sheet is accommodated or held. In particular, since the size of the sheet holding chassis in Patent Document 2 in the direction along the surface of the held optical sheet is larger than that of the optical sheet, the ready-made optical sheet or each component is surfaced by vibration, impact, etc. generated during transportation. There is also a risk of causing damage by sliding in the direction along.

本発明は、斯かる事情に鑑みてなされたものであり、本発明の目的は、光学シートの縁と当接し、前記光学シートの周縁部を覆う凹部を有する枠体の収容部材を備え、該収容部材に前記光学シートを収容しておき、組み立て工程では前記収容部材ごとに組み立てを行うことにより、既製光学シートの運搬及び取り扱いが容易になるうえ、光学シートの面に沿う方向への摺動が防止できると共に、組み立て作業の効率を向上させることが出来るバックライト及び表示装置を提供することにある。   The present invention has been made in view of such circumstances, and an object of the present invention is to include a frame housing member that has a recess that contacts the edge of the optical sheet and covers the peripheral edge of the optical sheet, The optical sheet is accommodated in the accommodating member, and in the assembly process, the assembled optical sheet is assembled for each of the accommodating members, so that the ready-made optical sheet can be easily transported and handled, and slides in the direction along the surface of the optical sheet. It is an object of the present invention to provide a backlight and a display device that can prevent the above-described problem and improve the efficiency of assembly work.

また、本発明の他の目的は、前記光学シートを収容部材に収容するための収容口と、前記光学シートが前記収容口から脱落することを防止する脱落防止部材とを備えることにより、例えば、運搬中の振動、衝撃等によっても前記収容部材に収容された前記光学シートが前記収容口から脱落することを防止できるバックライト及び表示装置を提供することにある。   Another object of the present invention is to provide a storage port for storing the optical sheet in a storage member, and a drop-off prevention member for preventing the optical sheet from dropping from the storage port. An object of the present invention is to provide a backlight and a display device that can prevent the optical sheet housed in the housing member from dropping out of the housing port due to vibration, impact, etc. during transportation.

また、本発明の他の目的は、バックライトに前記収容部材を所定位置に係止する係止部材を備え、該係止部材に対応する被係止部を前記収容部材に設けることにより、前記収容部材の位置決めが容易になると共に、前記収容部材のガタツキ及び位置ズレを防止することが出来るバックライト及び表示装置を提供することにある。   Another object of the present invention is to provide a locking member for locking the receiving member at a predetermined position in a backlight, and by providing a locked portion corresponding to the locking member in the receiving member, An object of the present invention is to provide a backlight and a display device capable of easily positioning the housing member and preventing the housing member from rattling and displacement.

また、本発明の他の目的は、前記収容部材は光学シートを押圧する押圧部材を備え、前記光学シートを押圧して収容部材に固定する構成にすることにより、前記収容部材内に収容された光学シートがその面に沿う方向又は厚み方向に移動し、光学シートが傷つくこと及び光学シートにシワ、シミが発生することを防止できるバックライト及び表示装置を提供することにある。   Another object of the present invention is that the housing member is provided with a pressing member that presses the optical sheet, and is housed in the housing member by pressing the optical sheet and fixing the optical sheet to the housing member. It is an object of the present invention to provide a backlight and a display device that can prevent the optical sheet from moving along the surface or in the thickness direction to damage the optical sheet and causing wrinkles and spots on the optical sheet.

また、本発明の他の目的は、前記押圧部材が弾性を有する圧接部を介して光学シートを押圧する構成にすることにより、運搬中の光学シートに加わる衝撃を吸収すると共に、過度な押圧力から光学シートを保護することが出来るバックライト及び表示装置を提供することにある。   Another object of the present invention is to absorb the impact applied to the optical sheet being transported by using the structure in which the pressing member presses the optical sheet through the elastic pressure contact portion, and excessive pressing force. It is an object of the present invention to provide a backlight and a display device that can protect an optical sheet from light.

また、本発明の他の目的は、前記収容部材が前記光学シートを収容する収容部を有しており、該収容部に前記脱落防止部材が嵌合される前記収容口と、前記被係止部と、前記押圧部材が設けられる構成にすることにより、前記収容部材に収容された光学シートの面に沿う方向への摺動及び厚み方向への移動の防止が確保された状態で、前記収容部材の運搬及び組み立てができるバックライト及び表示装置を提供することにある。   Another object of the present invention is to provide an accommodation portion in which the accommodation member accommodates the optical sheet, the accommodation opening into which the drop-off prevention member is fitted, and the locked portion. And the pressing member are provided so that sliding in the direction along the surface of the optical sheet accommodated in the accommodating member and prevention of movement in the thickness direction are ensured. To provide a backlight and a display device capable of transporting and assembling members.

本発明に係るバックライトは、光源と、該光源からの光を均一に表示パネルへ照射するための光学シートとを備えるバックライトにおいて、前記光学シートを収容する収容部材と、可変な押圧力にて前記光学シートを押圧して前記収容部材内に保持する押圧部材とを備えることを特徴とする。
また、本発明に係るバックライトは、前記収容部材は、前記光学シートの縁と当接し、前記光学シートの周縁部を覆う凹部を有する枠体であることを特徴とする。 A backlight according to the present invention includes a light source and an optical sheet for uniformly irradiating the display panel with light from the light source, a housing member that houses the optical sheet, and a variable pressing force. And a pressing member that presses and holds the optical sheet in the housing member .
Moreover, the backlight according to the present invention is characterized in that the housing member is a frame body that has a concave portion that comes into contact with an edge of the optical sheet and covers a peripheral edge of the optical sheet .

本発明にあっては、前記収容部材に収容される光学シートが、前記収容部材内で光学シート面方向へ摺動又は厚み方向へ移動しないように前記押圧部材が前記光学シートを押圧して前記収容部材内に保持する。また、必要に応じて前記押圧部材の押圧力の加減を調整する。
また、本発明にあっては、通常複数のシート状の構成部品からなる前記光学シートを予め前記収容部材に収容して置き、バックライトの組み立てラインに運搬する。該運搬の際、前記光学シートの面に沿う方向への摺動が前記凹部により抑制される。バックライトの組み立てライン中の光学シートの組み立て工程において、光学シートの構成部品を一枚ずつ積層する代わりに、前記光学シートが収容された状態の前記収容部材をそのまま組み立てる。 In the present invention, the pressing member presses the optical sheet so that the optical sheet accommodated in the accommodating member does not slide or move in the thickness direction in the accommodating member. Hold in the receiving member. Further, adjustment of the pressing force of the pressing member is adjusted as necessary.
Further, in the present invention, the optical sheet composed of a plurality of sheet-like components is usually stored in the storage member in advance and transported to the backlight assembly line. During the transportation, sliding in the direction along the surface of the optical sheet is suppressed by the recess. In the assembly process of the optical sheet in the assembly line of the backlight, instead of laminating the components of the optical sheet one by one, the housing member in a state where the optical sheet is housed is assembled as it is.

本発明に係るバックライトは、前記収容部材は、前記光学シートを前記収容部材に収容するための収容口と、前記光学シートが前記収容部材から脱落することを防止する脱落防止部材とを備えていることを特徴とする。   In the backlight according to the present invention, the housing member includes a housing port for housing the optical sheet in the housing member, and a drop-off preventing member for preventing the optical sheet from dropping from the housing member. It is characterized by being.

本発明にあっては、前記光学シートは前記収容口を介して収容部材内に収容される。収容された前記光学シートは前記脱落防止部材により、前記収容部材から脱落することが防止される。   In the present invention, the optical sheet is accommodated in the accommodating member through the accommodating port. The accommodated optical sheet is prevented from falling off from the housing member by the drop-out preventing member.

本発明に係るバックライトは、前記収容部材を所定位置に係止する係止部材を備えており、該係止部材に対応する被係止部を前記収容部材に設けていることを特徴とする。   The backlight according to the present invention includes a locking member that locks the storage member at a predetermined position, and a locked portion corresponding to the locking member is provided in the storage member. .

本発明にあっては、バックライト側には、前記収容部材を係止する係止部材を備え、前記収容部材側には、前記係止部材に対応する被係止部材を備え、前記収容部材をバックライトユニットの所定位置に係止させる。   In the present invention, the backlight side includes a locking member that locks the storage member, and the storage member side includes a locked member corresponding to the locking member, and the storage member Is locked at a predetermined position of the backlight unit.

本発明に係るバックライトは、前記押圧部材は弾性を有する圧接部を備え、該圧接部を介して前記光学シートを押圧するように構成してあることを特徴とする。   In the backlight according to the present invention, the pressing member includes a pressing portion having elasticity, and the optical sheet is pressed through the pressing portion.

本発明にあっては、前記押圧部材は、弾性を有する材料からなる前記圧接部を介して前記光学シートを押圧する。例えば光学シートに所定以上の押圧力がかかった場合、前記圧接部は変形を起こし、光学シートに対する押圧力を緩和する。   In the present invention, the pressing member presses the optical sheet via the pressure contact portion made of a material having elasticity. For example, when a predetermined pressing force or more is applied to the optical sheet, the pressure contact portion is deformed to relieve the pressing force on the optical sheet.

本発明に係るバックライトは、前記収容部材は長方形の枠体であり、前記収容部材は前記長方形の一の短辺側が開口された形状の収容部を有しており、該収容部の前記一の短辺側の側面には、前記脱落防止部材と嵌合される前記収容口が設けられ、前記収容部の長辺側には、一又は複数の前記被係止部及び押圧部材が設けられていることを特徴とする。 In the backlight according to the present invention, the housing member is a rectangular frame , and the housing member has a housing portion having a shape in which one short side of the rectangle is opened. The side of the short side is provided with the accommodating port to be fitted with the drop-off preventing member, and the one or a plurality of the locked parts and the pressing member are provided on the long side of the accommodating part. It is characterized by.

本発明にあっては、前記光学シートが前記収容口を介して収容部内に収容され、前記収容部の長辺側の前記押圧部材により固定される。従って、収容された光学シートの面に沿う方向への摺動及び厚み方向への移動の防止が確保された状態で、前記収容部材の運搬が可能となる。組み立てラインまで運搬された前記収容部材は、前記被係止部により、所定位置に係止され、組み立てられる。   In the present invention, the optical sheet is accommodated in the accommodating portion through the accommodating port, and is fixed by the pressing member on the long side of the accommodating portion. Therefore, the housing member can be transported in a state where sliding in the direction along the surface of the housed optical sheet and prevention of movement in the thickness direction are ensured. The housing member conveyed to the assembly line is locked at a predetermined position by the locked portion and assembled.

本発明に係る表示装置は、前述の本発明のいずれか一つのバックライトと、該バックライトからの光を用いて画像を表示する表示パネルとを備えていることを特徴とする。   A display device according to the present invention includes any one of the backlights of the present invention described above and a display panel that displays an image using light from the backlight.

本発明にあっては、前記光学シートを予め前記収容部材に収容して置き、表示装置のバックライトの組み立てライン中の光学シートの組み立て工程において、光学シートが収容された状態の前記収容部材をそのまま組み立てることによりバックライトを組み立てる。表示パネルは該バックライトからの光を用いて画像を表示する。   In the present invention, the optical sheet is accommodated in the accommodating member in advance, and the accommodating member in a state where the optical sheet is accommodated in the assembly process of the optical sheet in the assembly line of the backlight of the display device. Assemble the backlight as it is. The display panel displays an image using light from the backlight.

本発明によれば、光学シートの縁と当接し、前記光学シートの周縁部を覆う凹部を有する枠体の収容部材を備えているので、該収容部材に前記光学シートを収容しておき、組み立て工程では光学シートの積層作業の代わりに、前記収容部材ごとに光学シートの組み立てを行うことにより、光学シートの運搬及び取り扱いが容易になると共に、組み立て作業の効率を向上させることが出来る。   According to the present invention, since the housing member of the frame body having the recess that contacts the edge of the optical sheet and covers the peripheral edge of the optical sheet is provided, the optical sheet is housed in the housing member and assembled. In the process, by assembling the optical sheet for each housing member instead of the optical sheet laminating operation, the optical sheet can be easily transported and handled, and the efficiency of the assembling operation can be improved.

本発明によれば、前記光学シートを収容部材に収容するための収容口と、前記光学シートが前記収容口から脱落することを防止する脱落防止部材とを備えているので、例えば、運搬中の振動、衝撃等が生じる場合であっても前記収容部材に収容された前記光学シートが前記収容口から脱落することを防止できる。   According to the present invention, the optical sheet is provided with a storage port for storing the optical sheet in the storage member, and a drop-off prevention member for preventing the optical sheet from dropping from the storage port. Even when vibration, impact, or the like occurs, the optical sheet accommodated in the accommodation member can be prevented from dropping out of the accommodation opening.

本発明によれば、バックライト側に前記収容部材を所定位置に係止する係止部材を備え、該係止部材に対応する被係止部を前記収容部材に設けているので、前記収容部材の位置決めが容易になると共に、前記収容部材のガタツキ及び位置ズレを防止することが出来る。   According to the present invention, the storage member includes the locking member that locks the storage member at a predetermined position on the backlight side, and the locking member corresponding to the locking member is provided in the storage member. Can be easily positioned, and the housing member can be prevented from being loose and misaligned.

本発明によれば、前記収容部材は光学シートを押圧する押圧部材を備え、前記光学シートを押圧して固定するので、前記収容部材内に収容された光学シートがその面に沿う方向又は厚み方向へ移動し、光学シートが傷つくこと及び光学シートにシワ、シミが発生することを防止できる。   According to the present invention, since the housing member includes a pressing member that presses the optical sheet and presses and fixes the optical sheet, the optical sheet housed in the housing member is in the direction along the surface or in the thickness direction. It is possible to prevent the optical sheet from being damaged and the optical sheet from being wrinkled and stained.

本発明によれば、前記押圧部材の圧接部が弾性を有しており、該圧接部を介して前記光学シートを押圧するので、運搬中に光学シートへ加わる衝撃を吸収すると共に、過度な押圧力から光学シートを保護することが出来る。   According to the present invention, since the press contact portion of the pressing member has elasticity and presses the optical sheet through the press contact portion, the impact applied to the optical sheet during transportation is absorbed and excessive pressing is performed. The optical sheet can be protected from pressure.

本発明によれば、前記収容部材が前記光学シートを収容する収容部を有しており、該収容部に前記脱落防止部材が嵌合される前記収容口と、前記被係止部と、前記押圧部材が設けられているので、前記収容部材の運搬及び組み立ての作業において、前記収容部材に収容された光学シートの面に沿う方向への摺動及び厚み方向への移動による光学シートの損傷を防止できる。   According to the present invention, the housing member has a housing portion for housing the optical sheet, the housing port into which the drop-off preventing member is fitted in the housing portion, the locked portion, Since the pressing member is provided, in the operation of transporting and assembling the housing member, damage to the optical sheet due to sliding in the direction along the surface of the optical sheet housed in the housing member and movement in the thickness direction is prevented. Can be prevented.

以下本発明をその実施の形態を示す図面に基づいて詳述する。図１は本発明に係る表示装置１の一部を拡大した断面図である。   Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is an enlarged cross-sectional view of a part of a display device 1 according to the present invention.

本発明に係る表示装置１は、直方体をなし画像を表示する表示パネル１１と、一端部が表示パネル１１の表側の周縁部を取り囲むフロントキャビネット５と、表示パネル１１の裏側に配置され光源等を有するバックライト２と、バックライト２の裏側にてバックライト２を支持するシャーシ３と、シャーシ３の裏面に取付けられインバータ回路基板、電源基板等を有する電気部品４と、電気部品４、シャーシ３及びバックライト２を裏側から覆うバックキャビネット６とを備える。バックキャビネット６は、表側が開放されている箱型であり、フロントキャビネット５の他段部がバックキャビネット６の縁部にて螺子止めされている。   A display device 1 according to the present invention includes a display panel 11 that forms a rectangular parallelepiped, displays an image, a front cabinet 5 that has one end portion that surrounds a peripheral edge on the front side of the display panel 11, and a light source that is disposed on the back side of the display panel 11. The backlight 2, the chassis 3 that supports the backlight 2 on the back side of the backlight 2, the electrical component 4 that is attached to the rear surface of the chassis 3 and includes an inverter circuit board, a power supply board, and the like, and the electrical component 4 and the chassis 3. And a back cabinet 6 that covers the backlight 2 from the back side. The back cabinet 6 is a box shape whose front side is open, and the other step of the front cabinet 5 is screwed at the edge of the back cabinet 6.

バックライト２は後述の光学シート７１を収容する枠状の収容部材７と、両端部に電極を有し円筒状をなす複数の蛍光管２１，２１…と、蛍光管２１，２１…が放射した光を収容部材７側に反射させる反射板２２と、収容部材７及び反射板２２を保持する保持部材８と、収容部材７を固定する抑止部材１０とを備えており、蛍光管２１，２１…は表示パネル１１と平行的に並置されている。   The backlight 2 radiates from a frame-shaped housing member 7 that houses an optical sheet 71 described later, a plurality of cylindrical fluorescent tubes 21, 21... Having electrodes at both ends, and fluorescent tubes 21, 21. A reflecting plate 22 that reflects light toward the housing member 7, a holding member 8 that holds the housing member 7 and the reflecting plate 22, and a restraining member 10 that fixes the housing member 7, and fluorescent tubes 21, 21. Are juxtaposed in parallel with the display panel 11.

反射板２２は、周縁部から立ち上がる立ち上がり部２２ａ及び、立ち上がり部２２ａの端から外方へ延出される鍔部２２ｂを有している。鍔部２２ｂは挿通孔２２ｃ，２２ｃを設けており、表側は収容部材７の周縁部と接している。   The reflection plate 22 has a rising portion 22a that rises from the peripheral edge portion, and a flange portion 22b that extends outward from the end of the rising portion 22a. The flange 22 b is provided with insertion holes 22 c and 22 c, and the front side is in contact with the peripheral edge of the housing member 7.

保持部材８は４箇所にて雄螺子９，９，９，９によって螺子止めされ、シャーシ３に固定されている。雄螺子９，９，９，９の長さは，表示パネル１１の厚み方向における保持部材８の長さより短い。また、保持部材８は反射板２２の鍔部２２ｂの裏側と接し、鍔部２２ｂの裏面に沿う扁平の保持面８ｂと、表示パネル１１の厚み方向に保持部材８を貫通する挿通孔２２ｃ，２２ｃと等しい直径の螺子孔８ｃ，８ｃ，８ｃ，８ｃを有している。反射板２２の立ち上がり部２２ａと対向する保持部材８の内側面は、立ち上がり部２２ａに沿う形状を有しており、保持部材８の外側面には抑止部材１０の一端部を嵌合する嵌合部８ａを設けている。   The holding member 8 is screwed by male screws 9, 9, 9, 9 at four positions and is fixed to the chassis 3. The lengths of the male screws 9, 9, 9, 9 are shorter than the length of the holding member 8 in the thickness direction of the display panel 11. The holding member 8 is in contact with the back side of the flange portion 22b of the reflecting plate 22, and has a flat holding surface 8b along the back surface of the flange portion 22b, and insertion holes 22c and 22c penetrating the holding member 8 in the thickness direction of the display panel 11. Screw holes 8c, 8c, 8c, and 8c having the same diameter. The inner surface of the holding member 8 facing the rising portion 22a of the reflecting plate 22 has a shape along the rising portion 22a, and the outer surface of the holding member 8 is fitted with one end portion of the suppressing member 10. A portion 8a is provided.

螺子孔８ｃ，８ｃ，８ｃ，８ｃは、シャーシ３側からは雄螺子９，９，９，９が螺合されており、４つの螺子孔８ｃ，８ｃ，８ｃ，８ｃの内、２つの螺子孔８ｃ，８ｃの反対側からは反射板２２及び収容部材７の位置を決めるための位置決めピン１２，１２が圧入されている。位置決めピン１２，１２の一端部は保持部材８の保持面８ｂから表示パネル１１方向へ突出しており、保持面８ｂから位置決めピン１２，１２の先端までの長さは、反射板２２の厚みより長く、反射板２２の厚みと、光学シート７１の厚み方向における収容部材７の長さとの和より短い。位置決めピン１２，１２の前記一端部は、反射板２２の挿通孔２２ｃ，２２ｃ及び、収容部材７の後述の位置決め孔７８，７８に挿通される。   The screw holes 8c, 8c, 8c, 8c are screwed with male screws 9, 9, 9, 9 from the chassis 3 side, and two of the four screw holes 8c, 8c, 8c, 8c. Positioning pins 12 and 12 for determining the positions of the reflecting plate 22 and the accommodating member 7 are press-fitted from the opposite side of 8c and 8c. One end portions of the positioning pins 12, 12 protrude from the holding surface 8 b of the holding member 8 toward the display panel 11, and the length from the holding surface 8 b to the tips of the positioning pins 12, 12 is longer than the thickness of the reflection plate 22. It is shorter than the sum of the thickness of the reflecting plate 22 and the length of the housing member 7 in the thickness direction of the optical sheet 71. The one end portions of the positioning pins 12 and 12 are inserted into insertion holes 22 c and 22 c of the reflection plate 22 and positioning holes 78 and 78 (described later) of the housing member 7.

抑止部材１０は、一端部が保持部材８の嵌合部８ａに嵌合されており、他段部は収容部材７の周縁部を保持部材８へ押圧している。   One end of the restraining member 10 is fitted into the fitting portion 8 a of the holding member 8, and the other step portion presses the peripheral edge of the housing member 7 to the holding member 8.

図２は本発明に係る表示装置１の収容部材７の分解斜視図であり、図３は収容部材７の組み立て後における斜視図であり、図４は、図３のIV‐IV線による断面図であり、図５は、図３のV‐V線による断面図である。   2 is an exploded perspective view of the housing member 7 of the display device 1 according to the present invention, FIG. 3 is a perspective view after the housing member 7 is assembled, and FIG. 4 is a sectional view taken along line IV-IV in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG.

収容部材７は光学シート７１を収容しており、光学シート７１は反射偏光板７２、プリズムシート７３、拡散シート７４及び拡散板７５等が積層されており、表示パネル１１に対応する大きさの直方体の形状をなす。   The accommodating member 7 accommodates an optical sheet 71. The optical sheet 71 includes a reflective polarizing plate 72, a prism sheet 73, a diffusion sheet 74, a diffusion plate 75, and the like, and is a rectangular parallelepiped having a size corresponding to the display panel 11. The shape of

収容部材７は長方形の枠状をなし、収容された光学シート７１の厚み方向の両面が開放されている。開放された両面の面積は、光学シート７１の面積より小さい。収容部材７は光学シート７１を収容する収容部７６と、蓋部７７とからなる。光学シート７１は、一の短辺側が開口された形状の収容部７６の前記一の短辺側に設けている挿入口７９を介して、収容部７６に挿入される。   The accommodating member 7 has a rectangular frame shape, and both sides of the accommodated optical sheet 71 in the thickness direction are open. The open area of both surfaces is smaller than the area of the optical sheet 71. The housing member 7 includes a housing portion 76 that houses the optical sheet 71 and a lid portion 77. The optical sheet 71 is inserted into the accommodating portion 76 through the insertion port 79 provided on the one short side of the accommodating portion 76 having a shape in which one short side is opened.

収容部７６の内周面には、凹部８４を設けており、凹部８４によって光学シート７１の周縁部が取り囲まれるように保持される。凹部８４は収容部７６に対応する形状を有しており、光学シート７１の厚み方向における凹部８４の高さは、光学シート７１と、後述の押圧部材８０の圧接部８３の最大厚みとの和より少し大きい。また、収容部７６の各長辺側には収容部７６を所定位置に固定するための位置決め孔７８，７８を夫々設けている。各位置決め孔７８，７８は、収容部７６の長手方向の相互反対方向の端部に設けており、収容部７６を光学シート７１の厚み方向に貫通している。位置決めピン１２，１２の一端部を位置決め孔７８，７８に挿通させることにより、収容部７６（又は収容部材７）を所定位置に係止させ、収容部７６（又は収容部材７）のガタツキを防止することが出来る。   A concave portion 84 is provided on the inner peripheral surface of the housing portion 76, and the concave portion 84 is held so that the peripheral edge portion of the optical sheet 71 is surrounded. The concave portion 84 has a shape corresponding to the accommodating portion 76, and the height of the concave portion 84 in the thickness direction of the optical sheet 71 is the sum of the optical sheet 71 and the maximum thickness of the press contact portion 83 of the pressing member 80 described later. A little bigger. Further, positioning holes 78 and 78 for fixing the accommodating portion 76 at predetermined positions are provided on the long sides of the accommodating portion 76, respectively. Each positioning hole 78, 78 is provided at the end of the accommodating portion 76 in the opposite direction of the longitudinal direction, and penetrates the accommodating portion 76 in the thickness direction of the optical sheet 71. By inserting one end portions of the positioning pins 12 and 12 into the positioning holes 78 and 78, the accommodating portion 76 (or the accommodating member 7) is locked at a predetermined position, and rattling of the accommodating portion 76 (or the accommodating member 7) is prevented. I can do it.

挿入口７９を蓋する蓋部７７は、収容部７６の長手方向に突出する凸部を設けており、光学シート７１の厚み方向における前記凸部の長さは、凹部８４の前記高さと略等しく、挿入口７９にて収容部７６と嵌合される。従って、光学シート７１が収容部７６から抜け落ちることを防ぐことが出来る。   The lid portion 77 that covers the insertion port 79 is provided with a convex portion protruding in the longitudinal direction of the accommodating portion 76, and the length of the convex portion in the thickness direction of the optical sheet 71 is substantially equal to the height of the concave portion 84. The insertion portion 79 is fitted with the accommodating portion 76. Therefore, it is possible to prevent the optical sheet 71 from falling out of the housing portion 76.

収容部７６に収容された光学シート７１の裏側は周縁部が凹部８４のシート受部７６ａにより支持され、表側は周縁部が押圧部材８０，８０，８０…によってシート受部７６ａへ押圧され固定されることにより、光学シート７１の面に沿う方向及び厚み方向への移動を防止できる。   The rear side of the optical sheet 71 accommodated in the accommodating portion 76 is supported by the sheet receiving portion 76a of the concave portion 84 at the peripheral portion, and the peripheral portion is pressed and fixed to the sheet receiving portion 76a by the pressing members 80, 80, 80. Accordingly, movement in the direction along the surface of the optical sheet 71 and in the thickness direction can be prevented.

押圧部材８０，８０，８０…は、収容部７６の両長辺側に夫々３つずつ備えられている。弾性を有しており、光学シート７１と接する圧接部８３と、回転することによって圧接部８３を光学シート７１の厚み方向に移動させる螺子部８１，８１，８１…と、螺子部８１，８１，８１…を光学シート７１の方向へ付勢する付勢バネ８２，８２，８２…とを備えている。   Three pressing members 80, 80, 80... Are provided on both long sides of the accommodating portion 76. A pressure contact portion 83 that is in contact with the optical sheet 71, a screw portion 81, 81, 81... That moves the pressure contact portion 83 in the thickness direction of the optical sheet 71 by rotation, and a screw portion 81, 81, Urging springs 82, 82, 82, etc. for urging 81... Toward the optical sheet 71.

螺子部８１，８１，８１…の端部は、収容部７６の表側に設けられている６つの螺子孔７６ｂ，７６ｂ，７６ｂ…を介して凹部８４内へ洞貫しており、螺旋状の付勢バネ８２，８２，８２…は螺子部８１，８１，８１…の前記端部を囲むように設けられている。   The end portions of the screw portions 81, 81, 81... Penetrate into the concave portion 84 through six screw holes 76 b, 76 b, 76 b... Provided on the front side of the housing portion 76. The springs 82, 82, 82... Are provided so as to surround the end portions of the screw portions 81, 81, 81.

圧接部８３は矩形の板状をなし、シート受部７６ａより少し短い長さを有し、シート受部７６ａより少し狭い幅を有している。圧接部８３は、螺子部８１，８１，８１…と対応する位置で厚みを厚くして螺子部８１，８１，８１…に係る螺嵌孔８３ａ，８３ａ，８３ａ…を設けている。螺子部８１，８１，８１…の先端部は螺嵌孔８３ａ，８３ａ，８３ａ…にて圧接部８３と螺嵌している。   The pressure contact portion 83 has a rectangular plate shape, has a length slightly shorter than the sheet receiving portion 76a, and has a width slightly narrower than the sheet receiving portion 76a. The press-contact portion 83 is thickened at positions corresponding to the screw portions 81, 81, 81... And screw fitting holes 83a, 83a, 83a. The front ends of the screw portions 81, 81, 81... Are screwed into the press contact portions 83 through screw fitting holes 83a, 83a, 83a.

収容部７６に光学シート７１を収容する際には、螺子部８１，８１，８１…を一方向に回転させ、圧接部８３及びシート受部７６ａの間を広くしておく。光学シート７１が収容された後は、螺子部８１，８１，８１…を前記方向と反対方向に回転させ、圧接部８３及びシート受部７６ａの間を狭くする。これにより、圧接部８３は光学シート７１をシート受部７６ａへ押圧して固定する。   When the optical sheet 71 is accommodated in the accommodating portion 76, the screw portions 81, 81, 81... Are rotated in one direction so that the space between the press contact portion 83 and the sheet receiving portion 76a is widened. After the optical sheet 71 is accommodated, the screw portions 81, 81, 81... Are rotated in the direction opposite to the above direction, and the space between the pressure contact portion 83 and the sheet receiving portion 76a is narrowed. Thereby, the press contact part 83 presses and fixes the optical sheet 71 to the sheet receiving part 76a.

上述のような手法により予め光学シート７１を収容した収容部材７は、本発明に係るバックライト２又は表示装置１の組み立てラインにおける光学シート７１の積層の工程で、光学シート７１の積層の代わりに収容部材７ごとに組み立てられる。詳しくは、シャーシ３の表側に雄螺子９，９，９，９により、保持部材８を螺子止めする。保持部材８の保持面８ｂから表示パネル１１方向へ突出している位置決めピン１２，１２の先端部が、反射板２２の鍔部２２ｂの挿通孔２２ｃ，２２ｃに挿通するように、反射板２２を保持部材８に載置する。この際、位置決めピン１２，１２の先端部は挿通孔２２ｃ，２２ｃからも突出するようになるので、突出した位置決めピン１２，１２の先端部に、収容部材７の位置決め孔７８，７８を合わせ、収容部材７を載置する。   The accommodating member 7 that has previously accommodated the optical sheet 71 by the above-described method is a process of laminating the optical sheet 71 in the assembly line of the backlight 2 or the display device 1 according to the present invention, instead of laminating the optical sheet 71. Each housing member 7 is assembled. Specifically, the holding member 8 is screwed to the front side of the chassis 3 by male screws 9, 9, 9, 9. The reflecting plate 22 is held so that the front ends of the positioning pins 12 and 12 protruding from the holding surface 8b of the holding member 8 toward the display panel 11 are inserted into the insertion holes 22c and 22c of the flange 22b of the reflecting plate 22. Place on member 8. At this time, since the distal end portions of the positioning pins 12 and 12 also protrude from the insertion holes 22c and 22c, the positioning holes 78 and 78 of the housing member 7 are aligned with the projected distal end portions of the positioning pins 12 and 12, The housing member 7 is placed.

このように、光学シート７１の積層といった時間と手間が係る作業の代わりに、予め用意していた光学シート７１が収容された収容部材７をそのまま組み立てることにより、表示パネル１１の大型化に伴う光学シート７１の大型化による組み立てラインの遅延といった問題を解決するうえに、組み立ての作業を容易にし、作業効率を向上させることが出来る。   In this way, instead of the work that takes time and effort such as stacking the optical sheets 71, the storage member 7 in which the optical sheet 71 prepared in advance is assembled as it is. In addition to solving the problem of delay in the assembly line due to the increase in the size of the seat 71, the assembly work can be facilitated and the work efficiency can be improved.

上述の実施の形態においては、凸部を有する蓋部７７を設け、前記凸部が挿入口７９にて収容部７６と嵌合することにより、光学シート７１が収容部７６から抜け落ちることを防ぐ場合について説明したが、これに限るものでなく、蓋部７７は光学シート７１の収容部７６からの抜け落ちを防止できる構造であれば良い。   In the above-described embodiment, when the lid portion 77 having a convex portion is provided, and the convex portion is fitted to the accommodating portion 76 at the insertion port 79, the optical sheet 71 is prevented from falling out of the accommodating portion 76. However, the present invention is not limited to this, and the lid portion 77 may have any structure as long as the optical sheet 71 can be prevented from falling off from the accommodating portion 76.

また、上述の実施の形態においては、光学シート７１を固定するために、収容部７６の表側面に押圧部材８０，８０，８０…を設け、螺子部８１，８１，８１…の回転によって光学シート７１の押圧加減を調整する場合について説明したが、これに限るものでない。押圧部材８０，８０，８０…は収容部７６の側面でもよく、裏側面に設けても良い。また、光学シート７１の押圧加減の調整においては、螺子部８１，８１，８１…の回転によって行う場合に限るものでなく、押圧加減の調整が可能であれば良い。   In the above-described embodiment, in order to fix the optical sheet 71, pressing members 80, 80, 80... Are provided on the front side surface of the accommodating portion 76, and the optical sheet is rotated by rotating the screw portions 81, 81, 81. Although the case where the pressure adjustment of 71 was adjusted was demonstrated, it does not restrict to this. The pressing members 80, 80, 80... May be provided on the side surface of the accommodating portion 76 or on the back side surface. Further, the adjustment of the pressure adjustment of the optical sheet 71 is not limited to the case where the adjustment is performed by the rotation of the screw portions 81, 81, 81...

本発明に係る表示装置の一部を拡大した断面図である。It is sectional drawing to which some display apparatuses based on this invention were expanded. 本発明に係る表示装置の収容部材の分解斜視図である。It is a disassembled perspective view of the accommodating member of the display apparatus which concerns on this invention. 本発明に係る表示装置の収容部材の組み立て後における斜視図である。It is a perspective view after the assembly of the accommodating member of the display apparatus which concerns on this invention. 図３のIV‐IV線による断面図である。It is sectional drawing by the IV-IV line of FIG. 図３のV‐V線による断面図である。It is sectional drawing by the VV line of FIG. 従来の表示装置の全体の分解斜視図である。It is the whole disassembled perspective view of the conventional display apparatus. 従来の表示装置の一部を拡大した断面図である。It is sectional drawing to which some conventional display apparatuses were expanded.

符号の説明Explanation of symbols

１ 表示装置
２ バックライト
７ 収容部材
１１ 表示パネル
１２ 位置決めピン
２１ 蛍光管
７１ 光学シート
７６ 収容部
７７ 蓋部
７８ 位置決め孔
７９ 挿入口
８０ 押圧部材
８３ 圧接部
８４ 凹部 DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Backlight 7 Housing member 11 Display panel 12 Positioning pin 21 Fluorescent tube 71 Optical sheet 76 Housing part 77 Cover part 78 Positioning hole 79 Insertion port 80 Press member 83 Pressure contact part 84 Recess

Claims (7)

光源と、該光源からの光を均一に表示パネルへ照射するための光学シートとを備えるバックライトにおいて、
前記光学シートを収容する収容部材と、
可変な押圧力にて前記光学シートを押圧して前記収容部材内に保持する押圧部材と
を備えることを特徴とするバックライト。 In a backlight comprising a light source and an optical sheet for irradiating the display panel with light from the light source uniformly,
A housing member for housing the optical sheet ;
A pressing member that presses the optical sheet with a variable pressing force and holds the optical sheet in the housing member;
Backlight comprising: a. 前記収容部材は、前記光学シートの縁と当接し、前記光学シートの周縁部を覆う凹部を有する枠体であることを特徴とする請求項１に記載のバックライト。2. The backlight according to claim 1, wherein the housing member is a frame body that has a concave portion that contacts an edge of the optical sheet and covers a peripheral edge portion of the optical sheet. 前記収容部材は、前記光学シートを前記収容部材に収容するための収容口と、
前記光学シートが前記収容部材から脱落することを防止する脱落防止部材とを備えていることを特徴とする請求項２に記載のバックライト。 The housing member includes a housing port for housing the optical sheet in the housing member;
The backlight according to claim 2 , further comprising a drop-off preventing member that prevents the optical sheet from dropping from the housing member. 前記収容部材を所定位置に係止する係止部材を備えており、
該係止部材に対応する被係止部を前記収容部材に設けていることを特徴とする請求項１から３の何れか一つに記載のバックライト。 A locking member for locking the housing member in place,
The backlight according to claim 1, any one of 3, characterized in that is provided to be engaged portion corresponding to the engaging member to the housing member. 前記押圧部材は弾性を有する圧接部を備え、該圧接部を介して前記光学シートを押圧するように構成してあることを特徴とする請求項１乃至４のいずれか一つに記載のバックライト。   5. The backlight according to claim 1, wherein the pressing member includes an elastic pressure contact portion, and is configured to press the optical sheet through the pressure contact portion. . 前記収容部材は長方形の枠体であり、
前記収容部材は前記長方形の一の短辺側が開口された形状の収容部を有しており、
該収容部の前記一の短辺側の側面には、前記脱落防止部材と嵌合される前記収容口が設けられ、
前記収容部の長辺側には、一又は複数の前記被係止部及び押圧部材が設けられていることを特徴とする請求項１乃至５のいずれか一つに記載のバックライト。 The housing member is a rectangular frame;
The housing member has a housing portion having a shape in which one short side of the rectangle is opened,
On the side surface of the one short side of the accommodating portion, the accommodating port to be fitted with the drop-off preventing member is provided,
6. The backlight according to claim 1, wherein one or a plurality of the locked portions and a pressing member are provided on a long side of the housing portion. 請求項１乃至６のいずれか一つに記載のバックライトと、
該バックライトからの光を用いて画像を表示する表示パネルと
を備えていることを特徴とする表示装置。 The backlight according to any one of claims 1 to 6,
And a display panel for displaying an image using light from the backlight.
JP2006327438A 2006-12-04 2006-12-04 Backlight and display device Expired - Fee Related JP4646897B2 (en)

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JP4780216B2 (en) 2008-10-27 2011-09-28 ソニー株式会社 Surface light source device, manufacturing method thereof, and image display device
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JPH10105074A (en) * 1996-09-30 1998-04-24 Sony Corp Surface light source device
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