JP2006276728A - Liquid crystal display - Google Patents

Liquid crystal display Download PDF

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JP2006276728A
JP2006276728A JP2005099007A JP2005099007A JP2006276728A JP 2006276728 A JP2006276728 A JP 2006276728A JP 2005099007 A JP2005099007 A JP 2005099007A JP 2005099007 A JP2005099007 A JP 2005099007A JP 2006276728 A JP2006276728 A JP 2006276728A
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liquid crystal
crystal display
display unit
led
substrate
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JP4868569B2 (en
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Sachiko Honma
祥子 本間
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Rhythm Watch Co Ltd
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Rhythm Watch Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a more rationally constituted liquid crystal display. <P>SOLUTION: In the liquid crystal display having a substrate 10, a liquid crystal display part 20 provided to the substrate, an LED 30 provided between the substrate and the liquid crystal display part and a guide body 40 provided between the substrate and the liquid crystal display part so as to surround the LED, the guide body is provided with a reflecting surface 40a which reflects light of the LED, an angle of the reflecting surface is set so that luminous intensity of the liquid crystal display part is uniformized based on a directional pattern of the LED. In addition, a diffusion board 50 which diffuses the light of the LED is provided on the rear surface of the liquid crystal display part, the guide body holds the liquid crystal display part and the diffusion board in piles, the diffusion board is provided with an elastic piece 51 constituted by plastically deforming a material of the diffusion board and unsteadiness of the liquid crystal display part is prevented by depressing the liquid crystal display part with the elastic piece. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、バックライト構造を備えた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 having a backlight structure.

液晶表示装置のバックライト構造は、基板に液晶表示部を搭載し、その基板と液晶表示部との間にＬＥＤを設けて構成されている。また、基板と液晶表示部との間には、ＬＥＤを囲むようにガイド体が設けられている。ガイド体によれば、基板と液晶表示部との間からＬＥＤの光が外部に洩れるのを防止することができる。更に、液晶表示部の背面には、ＬＥＤの光を乱反射する乱反射板が設けられる。乱反射板を設けることによれば、液晶表示部の正面からＬＥＤの像がはっきりと見えることはない。また、ガイド体の内部においては、液晶表示部の明るさを十分に確保すべく、ＬＥＤの光を効率よく反射する構成が必要とされる。ガイド体には、ＬＥＤの光を反射するテーパー状の反射面が設けられる。この種の液晶表示装置は、特許文献１乃至４にも開示されている。
特開平６−３４９８８号公報 特開平８−２２００３号公報 特開平１０−１８６３３９号公報 特開平２００４−２７１７１３号公報 The backlight structure of a liquid crystal display device is configured by mounting a liquid crystal display unit on a substrate and providing an LED between the substrate and the liquid crystal display unit. Further, a guide body is provided between the substrate and the liquid crystal display unit so as to surround the LED. According to the guide body, it is possible to prevent the light of the LED from leaking from between the substrate and the liquid crystal display unit. Furthermore, an irregular reflection plate for irregularly reflecting the LED light is provided on the back surface of the liquid crystal display unit. By providing the irregular reflection plate, the LED image is not clearly seen from the front of the liquid crystal display unit. Moreover, in the inside of a guide body, the structure which reflects the light of LED efficiently is required in order to ensure the brightness of a liquid crystal display part enough. The guide body is provided with a tapered reflecting surface that reflects the light of the LED. This type of liquid crystal display device is also disclosed in Patent Documents 1 to 4.
JP-A-6-34988 JP-A-8-22003 Japanese Patent Laid-Open No. 10-186339 Japanese Patent Laid-Open No. 2004-271713

さて、ガイド体の内部には、ＬＥＤの光を反射するための反射面が設けられるところ、どのような反射面を設けるかが、液晶表示装置の性能に係る重要な課題とされる。また、ガイド体や液晶表示部等の組み付けについても、部品点数の低減等を踏まえつつ一層の構造的工夫が必要とされている。本発明は、かかる事情に鑑みてなされたものであり、その目的は、より合理的に構成された液晶表示装置を得ることである。   Now, a reflection surface for reflecting the light of the LED is provided inside the guide body, and what kind of reflection surface is provided is an important issue regarding the performance of the liquid crystal display device. Further, regarding the assembly of the guide body, the liquid crystal display unit, and the like, further structural ingenuity is required in consideration of the reduction in the number of parts. The present invention has been made in view of such circumstances, and an object thereof is to obtain a more rationally configured liquid crystal display device.

本願第１請求項に記載した発明は、基板と、前記基板に対して設けられた液晶表示部と、前記基板と前記液晶表示部との間に設けられたＬＥＤと、前記ＬＥＤを囲むように前記基板と前記液晶表示部との間に設けられたガイド体とを備えた液晶表示装置において、前記ガイド体には、前記ＬＥＤの光を反射する反射面を設け、前記反射面の角度は、前記ＬＥＤの指向特性に基づいて、前記液晶表示部の光度が均一化するように設定した構成の液晶表示装置である。   The invention described in claim 1 of the present application surrounds a substrate, a liquid crystal display unit provided for the substrate, an LED provided between the substrate and the liquid crystal display unit, and the LED. In a liquid crystal display device comprising a guide body provided between the substrate and the liquid crystal display unit, the guide body is provided with a reflective surface that reflects the light of the LED, and the angle of the reflective surface is: The liquid crystal display device has a configuration in which the light intensity of the liquid crystal display unit is set to be uniform based on the directivity characteristics of the LED.

本願第２請求項に記載した発明は、請求項１において、前記ＬＥＤの指向特性グラフに対し、前記液晶表示部の被照射面を表す線Ａ、及び前記反射面を表す線Ｂを示すと、前記線Ａは、前記ＬＥＤの相対光度を示す閉曲線の内側に位置する部位と、前記閉曲線の外側に位置する部位とを有し、且つ、前記線Ｂは、前記閉曲線の内側に位置する部位を有し、前記線Ｂにおける前記閉曲線の内側に位置する部位にて反射した光は、前記線Ａにおける前記閉曲線の外側に位置する部位に照射される構成の液晶表示装置である。   The invention described in claim 2 of the present application is that in claim 1, when the line A representing the irradiated surface of the liquid crystal display unit and the line B representing the reflecting surface are shown in the directional characteristic graph of the LED, The line A has a portion located inside the closed curve indicating the relative luminous intensity of the LED, and a portion located outside the closed curve, and the line B represents a portion located inside the closed curve. The liquid crystal display device is configured to irradiate the portion of the line A that is located inside the closed curve and that is reflected on the portion of the line A that is located outside the closed curve.

本願第３請求項に記載した発明は、液晶表示部と、前記液晶表示部の背面に設けられた乱反射板と、前記乱反射板を介して前記液晶表示部を照明する発光素子と、前記液晶表示部及び前記乱反射板を重ねて保持する支持体とを備えた液晶表示装置において、前記乱反射板には、その素材を塑性変形してなる弾性片を設け、   The invention described in claim 3 of the present application includes a liquid crystal display unit, a diffused reflection plate provided on a back surface of the liquid crystal display unit, a light emitting element that illuminates the liquid crystal display unit through the diffused reflection plate, and the liquid crystal display. In the liquid crystal display device comprising a portion and a support that holds the irregular reflection plate in an overlapping manner, the irregular reflection plate is provided with an elastic piece formed by plastic deformation of the material,

前記弾性片にて前記液晶表示部を押圧することにより、前記液晶表示部のがたつきを防止した構成の液晶表示装置である。   The liquid crystal display device has a configuration in which shakiness of the liquid crystal display unit is prevented by pressing the liquid crystal display unit with the elastic piece.

本発明によれば、より合理的に構成された液晶表示装置を得ることができる。   According to the present invention, a more rational liquid crystal display device can be obtained.

以下に、本発明の実施例を図面に基づいて説明する。図１乃至図３に示す液晶表示装置１は、外装たるフロントケース２及びリアケース３の内部に配置されている。この液晶表示装置１は、基板１０と、基板１０に対して設けられた液晶表示部２０と、基板１０と液晶表示部２０との間に設けられたＬＥＤ３０と、ＬＥＤ３０を囲むように基板１０と液晶表示部２０との間に設けられたガイド体４０とを備えている。また、液晶表示部２０の背面には、ＬＥＤ３０の光を乱反射する乱反射板５０が設けられている。ガイド体４０は、液晶表示部２０及び乱反射板５０を重ねて保持するとともに、基板１０に係止されている。ガイド体４０の要所には、液晶表示部２０及び乱反射板５０を保持する保持片４１が適宜間隔で設けられている。液晶表示部２０及び乱反射板５０は、保持片４１を弾性変形しつつガイド体４０に装着される。また、ガイド体４０の要所にはフック４２が設けられており、基板１０の要所にはフック４２を係止する係止部１１が設けられている。ガイド体４０は、フック４２を弾性変形しつつ係止部１１に係止することにより、基板１０に装着される。フロントケース２には、液晶表示部２０を露呈する開口部４が設けられている。開口部４には、液晶表示部を保護する透明板５が配置されている。尚、図中の６は、フロントケースに装着された操作ボタンである。この操作ボタン６は、その接点を基板に対して離合する構成のものである。また、図中の７は、基板１０に設けられた外部接続用端子である。この外部接続用端子７は、リアケース３に設けられたジャック部８から外部に露呈されている。   Embodiments of the present invention will be described below with reference to the drawings. The liquid crystal display device 1 shown in FIGS. 1 to 3 is disposed inside a front case 2 and a rear case 3 that are exteriors. The liquid crystal display device 1 includes a substrate 10, a liquid crystal display unit 20 provided for the substrate 10, an LED 30 provided between the substrate 10 and the liquid crystal display unit 20, and the substrate 10 so as to surround the LED 30. And a guide body 40 provided between the liquid crystal display unit 20 and the liquid crystal display unit 20. Further, on the back surface of the liquid crystal display unit 20, an irregular reflection plate 50 that irregularly reflects the light of the LED 30 is provided. The guide body 40 holds the liquid crystal display unit 20 and the irregular reflection plate 50 in an overlapping manner and is locked to the substrate 10. Holding pieces 41 for holding the liquid crystal display unit 20 and the irregular reflection plate 50 are provided at appropriate intervals at important points of the guide body 40. The liquid crystal display unit 20 and the irregular reflection plate 50 are attached to the guide body 40 while elastically deforming the holding piece 41. Further, hooks 42 are provided at important points of the guide body 40, and locking portions 11 for locking the hooks 42 are provided at important points of the substrate 10. The guide body 40 is mounted on the substrate 10 by locking the hook 42 to the locking portion 11 while elastically deforming the hook 42. The front case 2 is provided with an opening 4 that exposes the liquid crystal display unit 20. A transparent plate 5 that protects the liquid crystal display unit is disposed in the opening 4. Reference numeral 6 in the figure denotes an operation button attached to the front case. The operation button 6 is configured to separate the contact with the substrate. Reference numeral 7 in the figure denotes an external connection terminal provided on the substrate 10. The external connection terminal 7 is exposed to the outside from a jack portion 8 provided on the rear case 3.

基板１０は、ガラス粒子を混入したエポキシ樹脂等の絶縁材料からなる板材に所定の回路パターンを設けてなるものである。回路パターンは、板材の両面に導体箔を形成し、その導体箔にエッチング加工を施して設けられている。ＬＥＤ３０及びその他の電子素子（図示はせず）は、回路パターンに設けられたランドに対し搭載されている。   The substrate 10 is formed by providing a predetermined circuit pattern on a plate made of an insulating material such as an epoxy resin mixed with glass particles. The circuit pattern is provided by forming a conductive foil on both sides of a plate material and etching the conductive foil. The LED 30 and other electronic elements (not shown) are mounted on lands provided in the circuit pattern.

液晶表示部２０は、液晶体及び透明電極からなる液晶表示素子を透明板の間に設け、透明電極と電気的に接続されたピン状の端子２１から電気信号を入力することにより、所定の画素又はセグメント毎に透明・非透明状態が切換えられる構成となっている。端子２１の先端は、基板１０に設けられた電極ソケット６０に接続されている。   The liquid crystal display unit 20 is provided with a liquid crystal display element composed of a liquid crystal body and a transparent electrode between transparent plates, and inputs an electric signal from a pin-shaped terminal 21 electrically connected to the transparent electrode, whereby a predetermined pixel or segment It is configured to switch between transparent and non-transparent states every time. The tip of the terminal 21 is connected to an electrode socket 60 provided on the substrate 10.

ＬＥＤ３０は、所定の光学部材を一体に設けた発光素子であり、液晶表示部２０の形状に応じて適宜ピッチで基板上１０に配置されている。   The LEDs 30 are light emitting elements integrally provided with predetermined optical members, and are arranged on the substrate 10 at an appropriate pitch according to the shape of the liquid crystal display unit 20.

乱反射板５０は、外部から見た液晶表示部２０の明るさ、つまり開口部４から露呈した部位の明るさを均等化するためのものである。本例では、光を拡散する粒子を混入した透明樹脂製の板部材を採用している。   The irregular reflection plate 50 is for equalizing the brightness of the liquid crystal display unit 20 as viewed from the outside, that is, the brightness of the portion exposed from the opening 4. In this example, a transparent resin plate member mixed with light diffusing particles is employed.

ガイド体４０は、基板１０に固定されるとともに液晶表示部２０を保持する樹脂製の枠体である。図４に示すように、ガイド体４０の内部には、ＬＥＤ３０の光を反射するテーパー状の反射面４０ａが設けられている。本例の場合、反射面４０ａの角度は、ＬＥＤの指向特性に基づいて、液晶表示部の光度が均一化するように設定している。   The guide body 40 is a resin frame that is fixed to the substrate 10 and holds the liquid crystal display unit 20. As shown in FIG. 4, a tapered reflecting surface 40 a that reflects the light of the LED 30 is provided inside the guide body 40. In the case of this example, the angle of the reflective surface 40a is set so that the luminous intensity of the liquid crystal display unit is uniform based on the directivity characteristics of the LED.

図５は、本例のＬＥＤ３０の指向特性グラフである。この指向特性グラフは、ＬＥＤ３０の相対光度を示す閉曲線とともに、液晶表示部２０の被照射面を表す線Ａ、及び反射面４０ａを表す線Ｂを示したものである。本例において、液晶表示部２０の被照射面とは、開口部４から露呈した部位の下面に該当する。   FIG. 5 is a directivity characteristic graph of the LED 30 of this example. This directional characteristic graph shows a line A representing the irradiated surface of the liquid crystal display unit 20 and a line B representing the reflecting surface 40a together with a closed curve indicating the relative luminous intensity of the LED 30. In this example, the irradiated surface of the liquid crystal display unit 20 corresponds to the lower surface of the portion exposed from the opening 4.

同図に示すように、線Ａは、ＬＥＤ３０の相対光度を示す閉曲線の内側に位置する部位ａ１と、閉曲線の外側に位置する部位ａ２とを有し、且つ、線Ｂは、閉曲線の内側に位置する部位ｂ１と、閉曲線の外側に位置する部位ｂ２とを有する。ここで、線Ａにおける閉曲線の内側に位置する部位ａ１においては、十分な光度が得られるものとする。そして、線Ｂにおける閉曲線の内側に位置する部位ｂ１にて反射した光は、線Ａにおける閉曲線の外側に位置する部位ａ２に照射される。   As shown in the figure, the line A has a part a1 located inside the closed curve indicating the relative luminous intensity of the LED 30, and a part a2 located outside the closed curve, and the line B is located inside the closed curve. It has the site | part b1 located and the site | part b2 located in the outer side of a closed curve. Here, in the part a1 located inside the closed curve in the line A, it is assumed that sufficient luminous intensity is obtained. And the light reflected in the site | part b1 located inside the closed curve in the line B is irradiated to the site | part a2 located in the outer side of the closed curve in the line A.

このような構成によると、ＬＥＤ３０の光を有効に利用するとともに、開口部４から露呈した液晶表示部２０の光度を均一化することが可能となる。すなわち、液晶表示部２０の光度は、ＬＥＤ３０の正面では十分に得られるものの、正面から離れた端の方では不足する傾向にある。そこで本例では、光度が不足する部位にもＬＥＤ３０の光が十分に行渡るように、反射面４０ａにて反射する光の相対光度を考慮して、反射面４０ａの角度を設定している。無論、液晶表示部２０の光度を完全に均一化するのは困難又は不可能であり、反射面４０ａにて反射した光が全て線Ａにおける閉曲線の外側に位置する部位ａ２に照射される必要はない。また、ＬＥＤ３０の指向特性及び反射面４０ａの角度は、液晶表示部２０とＬＥＤ３０との距離や、液晶表示部２０の形状等に応じて適宜に設定することが可能であり、特に限定はしない。但し、ＬＥＤ３０の指向特性が１００〜１５０°、ＬＥＤ３０の正面に対する反射面４０ａの角度が３０〜７０°とするのが実用的な範囲であると考えられる。更に本例の構成は、線Ａ及び線Ｂが曲線で表されるものに応用することも可能である。   According to such a configuration, the light of the LED 30 can be used effectively, and the light intensity of the liquid crystal display unit 20 exposed from the opening 4 can be made uniform. That is, the luminous intensity of the liquid crystal display unit 20 is sufficiently obtained at the front of the LED 30, but tends to be insufficient at the end away from the front. Therefore, in this example, the angle of the reflection surface 40a is set in consideration of the relative light intensity of the light reflected by the reflection surface 40a so that the light of the LED 30 can be sufficiently distributed to the portion where the light intensity is insufficient. Of course, it is difficult or impossible to completely equalize the light intensity of the liquid crystal display unit 20, and it is necessary that all the light reflected by the reflecting surface 40a is irradiated to the part a2 located outside the closed curve in the line A. Absent. Further, the directivity characteristics of the LED 30 and the angle of the reflection surface 40a can be appropriately set according to the distance between the liquid crystal display unit 20 and the LED 30, the shape of the liquid crystal display unit 20, and the like, and are not particularly limited. However, it is considered that the practical range is that the directivity of the LED 30 is 100 to 150 ° and the angle of the reflection surface 40a with respect to the front surface of the LED 30 is 30 to 70 °. Furthermore, the configuration of this example can also be applied to the case where the lines A and B are represented by curves.

図６は、乱反射板５０を示す正面図である。本例の場合、乱反射板５０には、その素材を塑性変形してなる弾性片５１を複数箇所に設けている。素材の塑性変形は、プレス成形にて行う。液晶表示部２０と乱反射板５０との間隔は、弾性片５１が液晶表示部２０を押圧することによって調整される。すなわち、液晶表示部２０は、これを保持する支持体（本例ではガイド体４０）に対し、がたつきが生じないように押さえ込む必要がある。この点、支持体と液晶表示部２０との間に弾性部材を介在すれば、その弾性力にて液晶表示部２０が支持体の所定の当接部位（本例では保持片４１）に向かって押圧されるので、そのようながたつきを解消することが可能となる。しかし、弾性部材を別途に設ける場合は、部品点数の増加や、組み付け作業の煩雑化を招くことになる。   FIG. 6 is a front view showing the irregular reflection plate 50. In the case of this example, the irregular reflector 50 is provided with a plurality of elastic pieces 51 formed by plastic deformation of the material. The plastic deformation of the material is performed by press molding. The distance between the liquid crystal display unit 20 and the irregular reflection plate 50 is adjusted by the elastic piece 51 pressing the liquid crystal display unit 20. That is, the liquid crystal display unit 20 needs to be pressed against the support body (the guide body 40 in this example) that holds the liquid crystal display section 20 so as not to rattle. In this regard, if an elastic member is interposed between the support and the liquid crystal display unit 20, the liquid crystal display unit 20 is directed toward a predetermined contact portion (the holding piece 41 in this example) of the support by the elastic force. Since it is pressed, it is possible to eliminate such rattling. However, when an elastic member is provided separately, the number of parts increases and the assembly work becomes complicated.

そこで本例では、乱反射板５０にその素材を塑性変形してなる弾性片５１を設け、弾性片５１にて前記液晶表示部２０を押圧することにより、液晶表示部２０のがたつきを防止した。このような構成によると、極めて簡素な構成にて液晶表示部２０のがたつきを防止することが可能となる。尚、弾性片５１は、液晶表示部２０に当接するものを図例したが、支持体側の所定の部位に当接するように構成することも可能である。   Therefore, in this example, the irregular reflection plate 50 is provided with an elastic piece 51 formed by plastic deformation of the material, and the liquid crystal display unit 20 is pressed by the elastic piece 51 to prevent the liquid crystal display unit 20 from rattling. . According to such a configuration, it is possible to prevent the liquid crystal display unit 20 from rattling with a very simple configuration. The elastic piece 51 is illustrated as being in contact with the liquid crystal display unit 20, but may be configured to be in contact with a predetermined part on the support side.

以上説明したように、本例によれば、より合理的に構成された液晶表示装置を得ることができる。尚、本例における各部の構成は、特許請求の範囲に記載した技術的範囲において適宜に設計変更が可能であり、図例説明したものに限定されないことは勿論である。   As described above, according to this example, a more rational liquid crystal display device can be obtained. In addition, it is needless to say that the configuration of each part in the present example can be appropriately changed in design within the technical scope described in the claims, and is not limited to that illustrated in the drawings.

本発明は、バックライト構造を備えた液晶表示装置に関するものであり、例えば時計の時刻表示手段として好適に利用することができる。   The present invention relates to a liquid crystal display device having a backlight structure, and can be suitably used, for example, as time display means for a clock.

本発明の実施例に係り、液晶表示装置を示す透視正面図である。It is a see-through | perspective front view which concerns on the Example of this invention and shows a liquid crystal display device. 本発明の実施例に係り、液晶表示装置を示す断面図（図１のＸ−Ｘ断面図）である。It is sectional drawing (XX sectional drawing of FIG. 1) which concerns on the Example of this invention and shows a liquid crystal display device. 本発明の実施例に係り、液晶表示装置を示す断面図（図１のＹ−Ｙ断面図）である。It is sectional drawing (YY sectional drawing of FIG. 1) which concerns on the Example of this invention and shows a liquid crystal display device. 本発明の実施例に係り、液晶表示装置の要部を示す断面図である。It is sectional drawing which shows the principal part of a liquid crystal display device concerning the Example of this invention. 本発明の実施例に係り、ＬＥＤの指向特性グラフである。It is a directivity characteristic graph of LED concerning the Example of this invention. 本発明の実施例に係り、乱反射板を示す正面図である。It is a front view which concerns on the Example of this invention and shows a diffused reflection board.

符号の説明Explanation of symbols

１ 液晶表示装置
２ フロントケース
３ リアケース
４ 開口部
５ 透明板
６ 操作ボタン
７ 外部接続用端子
８ ジャック部
１０ 基板
１１ 係止部
２０ 液晶表示部
２１ 端子
３０ ＬＥＤ
４０ ガイド体
４０ａ 反射面
４１ 保持片
４２ フック部
５０ 乱反射板
５１ 弾性片
６０ 電極ソケット DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 2 Front case 3 Rear case 4 Opening part 5 Transparent board 6 Operation button 7 External connection terminal 8 Jack part 10 Board | substrate 11 Locking part 20 Liquid crystal display part 21 Terminal 30 LED
40 Guide body 40a Reflecting surface 41 Holding piece 42 Hook part 50 Diffuse reflecting plate 51 Elastic piece 60 Electrode socket

Claims (3)

基板と、前記基板に対して設けられた液晶表示部と、前記基板と前記液晶表示部との間に設けられたＬＥＤと、前記ＬＥＤを囲むように前記基板と前記液晶表示部との間に設けられたガイド体とを備えた液晶表示装置において、
前記ガイド体には、前記ＬＥＤの光を反射する反射面を設け、
前記反射面の角度は、前記ＬＥＤの指向特性に基づいて、前記液晶表示部の光度が均一化するように設定したことを特徴とする液晶表示装置。 A substrate, a liquid crystal display unit provided for the substrate, an LED provided between the substrate and the liquid crystal display unit, and between the substrate and the liquid crystal display unit so as to surround the LED In a liquid crystal display device provided with a provided guide body,
The guide body is provided with a reflecting surface that reflects the light of the LED,
The angle of the reflection surface is set so that the luminous intensity of the liquid crystal display unit is made uniform based on the directivity characteristics of the LED. 前記ＬＥＤの指向特性グラフに対し、前記液晶表示部の被照射面を表す線Ａ、及び前記反射面を表す線Ｂを示すと、
前記線Ａは、前記ＬＥＤの相対光度を示す閉曲線の内側に位置する部位と、前記閉曲線の外側に位置する部位とを有し、且つ、前記線Ｂは、前記閉曲線の内側に位置する部位を有し、
前記線Ｂにおける前記閉曲線の内側に位置する部位にて反射した光は、前記線Ａにおける前記閉曲線の外側に位置する部位に照射されることを特徴とする請求項１記載の液晶表示装置。 When the line A representing the irradiated surface of the liquid crystal display unit and the line B representing the reflecting surface are shown with respect to the directional characteristic graph of the LED,
The line A has a portion located inside the closed curve indicating the relative luminous intensity of the LED, and a portion located outside the closed curve, and the line B represents a portion located inside the closed curve. Have
2. The liquid crystal display device according to claim 1, wherein light reflected by a portion of the line B located inside the closed curve is irradiated to a portion of the line A located outside the closed curve. 液晶表示部と、前記液晶表示部の背面に設けられた乱反射板と、前記乱反射板を介して前記液晶表示部を照明する発光素子と、前記液晶表示部及び前記乱反射板を重ねて保持する支持体とを備えた液晶表示装置において、
前記乱反射板には、その素材を塑性変形してなる弾性片を設け、
前記弾性片にて前記液晶表示部を押圧することにより、前記液晶表示部のがたつきを防止したことを特徴とする液晶表示装置。 A liquid crystal display unit; a diffused reflection plate provided on a back surface of the liquid crystal display unit; a light emitting element that illuminates the liquid crystal display unit through the diffused reflection plate; and a support that holds the liquid crystal display unit and the diffused reflection plate in an overlapping manner. In a liquid crystal display device comprising a body,
The irregular reflection plate is provided with an elastic piece formed by plastic deformation of the material,
A liquid crystal display device, wherein the liquid crystal display unit is prevented from shaking by pressing the liquid crystal display unit with the elastic piece.
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