JP2003185994A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JP2003185994A JP2003185994A JP2001382024A JP2001382024A JP2003185994A JP 2003185994 A JP2003185994 A JP 2003185994A JP 2001382024 A JP2001382024 A JP 2001382024A JP 2001382024 A JP2001382024 A JP 2001382024A JP 2003185994 A JP2003185994 A JP 2003185994A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- light guide
- lcd
- display device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- 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
- G02F1/133342—Constructional arrangements; Manufacturing methods for double-sided displays
-
- 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
- G02F2201/465—Snap -fit
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶表示装置に関
し、特に携帯用電話機などの携帯用表示機器に適した液
晶表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device suitable for portable display devices such as portable telephones.
【０００２】[0002]
【従来の技術】従来、液晶表示装置としては透明基板間
に表示用の液晶を充填した液晶表示素子（以下、液晶表
示部又はＬＣＤということがある）が知られている。Ｌ
ＣＤをＬＳＩ（ＩＣ）で駆動する装置（以下、ＬＣＭ又
はＬＣモジュールということがある）を図７（図７
（ａ）の各部品組み立て前の斜視図と、図７（ｂ）の図
７（ａ）に示す部品組み立て後の側面断面を見た図）に
示す。2. Description of the Related Art Conventionally, as a liquid crystal display device, a liquid crystal display element (hereinafter, also referred to as a liquid crystal display section or LCD) in which liquid crystal for display is filled between transparent substrates is known. L
A device for driving a CD by an LSI (IC) (hereinafter, also referred to as LCM or LC module) is shown in FIG.
7A is a perspective view before assembling each component, and FIG. 7B is a side cross-sectional view after component assembling shown in FIG. 7A.
【０００３】ＬＣモジュールは、それぞれ透明電極を構
成する配線を施した透明な表基板１と裏基板２を重ね合
わせ、該両透明基板１、２の間にシール部材で区分され
た画素領域内に液晶を封入した液晶表示部（ＬＣＤ）３
と、該液晶表示部３からの配線に接続した金属銅の配線
５、６をポリイミド樹脂などの合成樹脂フィルムからな
る回路基板７上に形成し、前記金属銅の配線５、６を集
合化した領域に、前記液晶表示部３の透明画素電極の導
通制御をするＬＳＩ（ＩＣ）８をＡＣＦ（Anisotropic
Conductive Film）（図示せず）を介して接続した回路
基板部９とからなる構成である。前記両基板１、２は透
明ガラス又は透明樹脂板から構成される。In an LC module, a transparent front substrate 1 and a back substrate 2 each having wiring constituting a transparent electrode are superposed, and the transparent substrate 1 and the transparent substrate 2 are placed in a pixel region divided by a sealing member. Liquid crystal display (LCD) 3 with liquid crystal enclosed
And metallic copper wirings 5 and 6 connected to the wirings from the liquid crystal display unit 3 were formed on a circuit board 7 made of a synthetic resin film such as polyimide resin, and the metallic copper wirings 5 and 6 were assembled. In the area, an LSI (IC) 8 for controlling conduction of the transparent pixel electrodes of the liquid crystal display section 3 is ACF (Anisotropic)
And a circuit board unit 9 connected via a conductive film (not shown). Both the substrates 1 and 2 are made of transparent glass or a transparent resin plate.
【０００４】前記回路基板部９上のＬＳＩ（ＩＣ）８の
配線は異方性導電膜（図示せず）などを介して電源側に
接続する構造になっているが、図７に示す構成ではＬＳ
Ｉ８が合成樹脂フィルム上に有ることから、チップオン
フィルム（Chip on Film）モジュールということがあ
る。The wiring of the LSI (IC) 8 on the circuit board 9 is connected to the power source side through an anisotropic conductive film (not shown) or the like, but in the configuration shown in FIG. LS
Since the I8 is on the synthetic resin film, it is sometimes called a chip on film module.
【０００５】また、図７に示すＬＣＭは、導光板１１を
ＬＣＤ３のバックライトとして用いる例であり、ＬＣＤ
３と回路基板部９を一体化して導光板１１を重ね合わせ
て配置し、導光板１１のＬＥＤ、冷陰極管等からなる光
源１２と共に基板１３に取り付けており、該基板１３の
導光板１１側の側面には可視光を反射させるための塗
膜、又はテープが被覆されている。The LCM shown in FIG. 7 is an example in which the light guide plate 11 is used as a backlight for the LCD 3.
3 and the circuit board portion 9 are integrated and a light guide plate 11 is arranged so as to be overlapped with each other, and the light guide plate 11 is mounted on a substrate 13 together with a light source 12 such as an LED and a cold cathode tube. Is coated with a coating film or a tape for reflecting visible light.
【０００６】また、例えば携帯電話でメインＬＣＤと背
面ＬＣＤを取り付けている場合など、一つのＬＣＭ製品
に二つのＬＣＤ３、３’を取り付けた場合の側面図を図
８に示す。この場合には、それぞれのＬＣＤ３、３’に
導光板１１、１１’と光源１２、１２’を実装している
ので、かさ高い構成になっている。FIG. 8 is a side view showing a case where two LCDs 3 and 3'are attached to one LCM product, such as a case where a main LCD and a rear LCD are attached to a mobile phone. In this case, since the light guide plates 11 and 11 ′ and the light sources 12 and 12 ′ are mounted on the LCDs 3 and 3 ′, respectively, the structure is bulky.
【０００７】また、導光板１１と光源１２の組み合わせ
（以下、これをバックライトユニットということがあ
る）にＬＣＤ３を固定するには、両面テープで両者を貼
り付け合わせるかもしくは図９の液晶表示装置の要部側
断面図に示すようにバックライトユニットの導光板２１
に爪２１ａ、２１ｂを設け、その爪２１ａ、２１ｂでＬ
ＣＤ３を固定するなどの方法を用いている。Further, in order to fix the LCD 3 to the combination of the light guide plate 11 and the light source 12 (hereinafter, this may be referred to as a backlight unit), the both are attached by a double-sided tape or the liquid crystal display device of FIG. As shown in the side cross-sectional view of the main part of FIG.
Claws 21a and 21b are provided on the
A method such as fixing CD3 is used.
【０００８】[0008]
【発明が解決しようとする課題】前記図７、図８に示す
従来技術の液晶表示装置では、次のような欠点があっ
た。一つのＬＣＤ３に一つのバックライトユニットを実
装するため、一つの液晶表示装置製品用に二つのバック
ライトユニットを作ることになるので、金型費、材料費
がかさみ、実装体積が大きくなる。The conventional liquid crystal display device shown in FIGS. 7 and 8 has the following drawbacks. Since one backlight unit is mounted on one LCD 3, two backlight units are made for one liquid crystal display device product, resulting in increased mold cost, material cost, and increased mounting volume.
【０００９】また、両面テープでバックライトユニット
とＬＣＤ３を貼り合わせる場合にバックライトユニット
とＬＣＤ３の間に異物が入ると、これを取り除くために
分解しようとすると製品に傷を付けたり、両面テープの
粘着材が残り、製品表面を汚染する。このため、バック
ライトユニットとＬＣＤ３の間に一旦異物が入ると、再
組立ができないおそれがあった。In addition, when the back light unit and the LCD 3 are attached to each other with a double-sided tape, if a foreign substance enters between the back light unit and the LCD 3, disassembling to remove the foreign matter may damage the product or cause the double-sided tape to stick. The adhesive material remains and contaminates the product surface. Therefore, once a foreign matter enters between the backlight unit and the LCD 3, there is a possibility that reassembly cannot be performed.
【００１０】また、バックライトユニットの導光板２１
に設けた二つの爪２１ａ、２１ｂ間にＬＣＤ３を嵌め込
む構成も知られているが、その構成は図９に示すよう
に、導光板２１に設けた二つの爪２１ａ、２１ｂ間にＬ
ＣＤ３を嵌め込むと、二つの爪２１ａ、２１ｂとＬＣＤ
３の表面の間に若干の隙間Ｓ１、Ｓ２ができてしまい、
がたつき音がすることがあった。In addition, the light guide plate 21 of the backlight unit
There is also known a configuration in which the LCD 3 is fitted between the two claws 21a and 21b provided on the light guide plate 21, but as shown in FIG. 9, the configuration is L between the two claws 21a and 21b provided on the light guide plate 21.
When the CD3 is inserted, the two claws 21a and 21b and the LCD
There are some gaps S1 and S2 between the surfaces of 3,
There was a rattling noise.
【００１１】本発明の課題は、二つ以上のＬＣＤ又はＬ
ＣＭをバックライトユニットに取り付けた液晶表示装置
であっても、低コストで、小型化が可能で、また再組み
立てが容易で、がたつきのない製品を提供することであ
る。An object of the present invention is to provide more than one LCD or L.
An object of the present invention is to provide a liquid crystal display device in which a CM is attached to a backlight unit, which is low in cost, can be downsized, is easy to reassemble, and has no rattling.
【００１２】[0012]
【課題を解決するための手段】本発明の上記課題は、次
の発明により解決される。すなわち、画素電極が設けら
れた第１の基板と対向画素電極が設けられた第２の基板
を前記両方の電極が対向配置されるように重ね合わせ、
前記第１の基板と第２の基板の間の画素領域に液晶を封
入した液晶表示部（ＬＣＤ）を二つ設け、二つの液晶表
示部（ＬＣＤ）の間に挟み込んだ導光板と、該導光板の
端部に配置した光源とを備えた液晶表示装置である。The above problems of the present invention are solved by the following inventions. That is, a first substrate provided with a pixel electrode and a second substrate provided with a counter pixel electrode are stacked so that both electrodes are arranged so as to face each other,
A liquid crystal display unit (LCD) in which liquid crystal is sealed is provided in a pixel region between the first substrate and the second substrate, and a light guide plate sandwiched between the two liquid crystal display units (LCD) and the light guide plate. A liquid crystal display device comprising a light source arranged at an end of a light plate.
【００１３】前記導光板は各液晶表示部（ＬＣＤ）にそ
れぞれ対応した一対の導光性材料からなり、該一対の導
光板の間に反射板を配置しても良い。また、前記導光板
は各液晶表示部（ＬＣＤ）を挟み込むための傾斜部付き
の固定爪と可動爪を備えた構成にすることができる。The light guide plate may be made of a pair of light guide materials corresponding to each liquid crystal display (LCD), and a reflector may be arranged between the pair of light guide plates. In addition, the light guide plate may be configured to include a fixed claw with an inclined portion for sandwiching each liquid crystal display (LCD) and a movable claw.
【００１４】[0014]
【作用】本発明によれば、一セットの光源と導光板から
成るバックライトユニットから、その表、裏両面に設け
た二つのＬＣＤ又はＬＣＭに同時に光を照射することが
できる。また、光源を実装する面積、工数も削減でき
る。According to the present invention, it is possible to simultaneously irradiate two LCDs or LCMs provided on the front surface and the back surface of the backlight unit from a backlight unit consisting of a set of light sources and a light guide plate. Further, the area for mounting the light source and the number of steps can be reduced.
【００１５】前記導光板は各液晶表示部（ＬＣＤ）にそ
れぞれ対応した一対の導光性材料からなり、該一対の導
光板の間に反射板を配置することでバックライト性能が
効果的に発揮できる。The light guide plate is made of a pair of light guide materials corresponding to each liquid crystal display (LCD), and the backlight performance can be effectively exhibited by disposing the reflection plate between the pair of light guide plates. .
【００１６】また、このバックライトタイプの液晶表示
装置には、ＬＣＤ又はＬＣＭを固定するために、がたつ
き音の出ない傾斜部付きの爪を有するバックライトユニ
ットを用いるので、バックライトとＬＣＤ３又はＬＣＭ
の間に異物が入った場合でも、容易に再組立ができる。Further, in this backlight type liquid crystal display device, a backlight unit having a claw with an inclined portion which does not produce rattling sound is used to fix the LCD or LCM. Or LCM
Even if there is a foreign substance in between, it can be easily reassembled.
【００１７】[0017]
【発明の実施の形態】本発明の実施の形態について図面
と共に説明する。まず、本実施の形態の二つのＬＣＤを
装着できるバックライトユニットの構成を図１、図２に
示す。図１の斜視図は二つのＬＣＤを表裏面に装着する
ための導光板１５、１５’の組み立て前の構成を示す図
である。二つの導光板１５、１５’の間に反射板１６を
挟み込み、これらを重ね合わせて図２（ａ）の斜視図に
示すように二つの導光板１５、１５’を一体化する。ま
た図２（ｂ）に図２（ａ）のＡ−Ａ線断面を見た図を示
すように、導光板１５、１５’の一側面側にはプリント
基板１７に支持された光源１２が配置されることになる
（図２（ａ）にはプリント基板１７は図示せず）。ま
た、図２（ａ）のＢ−Ｂ線断面部分の拡大図を図５に示
す。なお、図５にはＬＣＤ３、３’（又はＬＣＭ）を装
着した状態の側断を見た図を示している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. First, FIGS. 1 and 2 show the configuration of a backlight unit to which the two LCDs of this embodiment can be attached. The perspective view of FIG. 1 is a view showing a configuration before assembling of the light guide plates 15 and 15 ′ for mounting two LCDs on the front and back surfaces. The reflection plate 16 is sandwiched between the two light guide plates 15 and 15 ', and these are overlapped to integrate the two light guide plates 15 and 15' as shown in the perspective view of FIG. Further, as shown in FIG. 2B, which is a cross-sectional view taken along the line AA of FIG. 2A, the light source 12 supported by the printed circuit board 17 is disposed on one side of the light guide plates 15 and 15 ′. The printed circuit board 17 is not shown in FIG. 2 (a). Further, FIG. 5 shows an enlarged view of a cross-sectional portion taken along the line BB of FIG. It is to be noted that FIG. 5 shows a view of the side section with the LCDs 3 and 3 ′ (or LCM) attached.
【００１８】図３には図１、図２に示すバックライトユ
ニットの両面にそれぞれ表基板１と裏基板２および表基
板１’と裏基板２’を重ね合わせ該両透明基板１、２お
よび１’、２’の間にそれぞれシール部材で区分された
画素領域内に液晶を封入したＬＣＤ３、３’（又はＬＣ
Ｍ）を配置する場合の組み立て前の構成を示す。また図
３にはＬＣＤ３、３’から接続した金属銅の配線を形成
した回路基板７、７’および前記ＬＣＤ３、３’の透明
画素電極の導通制御をするＬＳＩ８、８’も示してい
る。図３に示すように導光板１５、１５’の各入光面
に、均等に光が入るように単一の光源１２を配置するこ
とで、各導光板１５、１５’は各ＬＣＤ３、３’（又は
ＬＣＭ）に向けて互いに均等に光を照射することができ
る。In FIG. 3, a front substrate 1 and a back substrate 2 and a front substrate 1'and a back substrate 2'are superposed on both surfaces of the backlight unit shown in FIGS. LCDs 3 and 3 '(or LCs in which liquid crystal is enclosed in pixel areas separated by a seal member between "2" and "2")
The structure before the assembly when M) is arranged is shown. Also shown in FIG. 3 are circuit boards 7 and 7'in which metal copper wirings connected to the LCDs 3 and 3'are formed, and LSIs 8 and 8'for controlling conduction of the transparent pixel electrodes of the LCDs 3 and 3 '. As shown in FIG. 3, by disposing a single light source 12 on each light entrance surface of the light guide plates 15 and 15 ′ so that light can enter uniformly, each light guide plate 15 and 15 ′ can be replaced by each LCD 3, 3 ′. Light can be evenly emitted toward each other (or LCM).
【００１９】なお光源１２としては、フィラメントタイ
プの電球、冷陰極管、熱陰極管、ＬＥＤなどが用いら
れ、反射板１６としてはプラスチックシートに白色塗膜
を設けたもの、アルミニウムの金属膜を被覆したもの、
又はアルミ箔を貼り付けたものが用いられる。また導光
板１５、１５’としてはアクリル樹脂、ポリカーボネー
ト樹脂などから成る材料が用いられる。As the light source 12, a filament type light bulb, a cold cathode tube, a hot cathode tube, an LED or the like is used, and as the reflection plate 16, a plastic sheet provided with a white coating film, or an aluminum metal film is coated. What you did
Alternatively, an aluminum foil is used. A material such as acrylic resin or polycarbonate resin is used for the light guide plates 15 and 15 '.
【００２０】また、図４には図１のＡ−Ａ線断面視図を
示すが、導光板１５にはＬＣＤ３（又はＬＣＭ）固定用
の爪１５ａ、１５ｂを対向する側面に設けている。この
爪１５ａ、１５ｂは固定爪（可動しない爪）１５ａと可
動爪１５ｂの２種類があり、それぞれにＬＣＤ３（又は
ＬＣＭ）とバックライトユニットの嵌合性を良くして、
バックライトユニットにＬＣＤ３（又はＬＣＭ）を固定
した後に、がたつき音がしないように若干の傾斜部（図
４の矢印Ｃ部）が付いている。FIG. 4 is a sectional view taken along the line AA of FIG. 1. The light guide plate 15 is provided with claws 15a and 15b for fixing the LCD 3 (or LCM) on opposite side surfaces. There are two types of claws 15a and 15b, a fixed claw (non-movable claw) 15a and a movable claw 15b, which improve the fitability of the LCD 3 (or LCM) and the backlight unit, respectively.
After fixing the LCD 3 (or LCM) to the backlight unit, a slight inclined portion (arrow C portion in FIG. 4) is provided so as to prevent rattling noise.
【００２１】この爪１５ａ、１５ｂの傾斜部にＬＣＤ３
（又はＬＣＭ）の角が当たるように、固定爪１５ａと可
動爪１５ｂ間の長さＬ（図４に示す長さＬ）は、ＬＣＤ
３（又はＬＣＭ）の対応する側面の幅Ｂより若干小さく
設計する。両方の爪１５ａ、１５ｂは導光板１５と同じ
材質の合成樹脂で作られているため、若干のバネ性を持
っている。そのため、両方の爪１５ａ、１５ｂに挟まれ
たＬＣＤ３（又はＬＣＭ）は常に矢印Ｄ方向に押し付け
られ、ＬＣＤ３（又はＬＣＭ）はがたつきがなく、爪１
５ａ、１５ｂ間に保持される。図５には爪１５ｂの変形
時と元通りになった後の形状をそれぞれ点線と実線で示
している。The LCD 3 is attached to the inclined portions of the claws 15a and 15b.
The length L between the fixed claw 15a and the movable claw 15b (the length L shown in FIG. 4) is such that the LCD (or LCM) hits the corner.
It is designed to be slightly smaller than the width B of the corresponding side of 3 (or LCM). Since both the claws 15a and 15b are made of a synthetic resin of the same material as the light guide plate 15, they have some elasticity. Therefore, the LCD 3 (or LCM) sandwiched between the both nails 15a and 15b is always pressed in the direction of the arrow D, and the LCD 3 (or LCM) does not rattle, and the nail 1
It is held between 5a and 15b. In FIG. 5, the shapes of the claw 15b at the time of deformation and after being restored are shown by a dotted line and a solid line, respectively.
【００２２】本実施の形態の構成では、図９に示す従来
技術のバックライトユニットに設けた爪２１ａ、２１ｂ
間にＬＣＤ３（又はＬＣＭ）を嵌め込む場合に生じる爪
２１ａ、２１ｂとＬＣＤ３（又はＬＣＭ）との間の隙間
Ｓ１、Ｓ２がないので、がたつき音が発生することはな
い。In the configuration of the present embodiment, the claws 21a and 21b provided in the conventional backlight unit shown in FIG. 9 are used.
Since there are no gaps S1 and S2 between the claws 21a and 21b and the LCD 3 (or LCM) that occur when the LCD 3 (or LCM) is fitted between them, rattling noise does not occur.
【００２３】上記本発明の導光板１５、１５’の入光面
と光源１２の位置を調整することにより（もしくは、入
光面の面積を変えることにより）バックライトユニット
の表面、裏面の発光輝度を調整することもできる。ま
た、さらに複数個の光源がある場合は点灯させる光源の
数を調整することにより発光輝度を調整することもでき
る。By adjusting the positions of the light entrance surface of the light guide plates 15 and 15 'and the light source 12 of the present invention (or by changing the area of the light entrance surface), the emission brightness of the front surface and the back surface of the backlight unit. Can also be adjusted. Further, when there are a plurality of light sources, the light emission brightness can be adjusted by adjusting the number of light sources to be turned on.
【００２４】また、図５に示す反射板１６を用いない
で、図６に示す導光板１９により、その両面に設けた固
定爪１９ａと可動爪１９ｂ間に二つのＬＣＤ３（又はＬ
ＣＭ）を嵌め込む構成でも良い。Further, without using the reflection plate 16 shown in FIG. 5, two LCDs 3 (or L) are provided between the fixed claw 19a and the movable claw 19b provided on both surfaces of the light guide plate 19 shown in FIG.
A configuration in which CM) is fitted may be used.
【００２５】ＭＬＣＤ（マルチＬＣＤ）モジュールに本
実施の形態のバックライトユニットを組み合わせること
により低コスト、省スペースのＬＣＤモジュールユニッ
トを提供することができる。By combining the backlight unit of this embodiment with an MLCD (multi-LCD) module, a low-cost and space-saving LCD module unit can be provided.
【００２６】この方法を用いることにより、折り畳み式
携帯電話に実装されているサブＬＣＤ（背面ＬＣＤ）と
メインＬＣＤを同時にバックライト方式で表示させるこ
とができる。By using this method, it is possible to simultaneously display the sub-LCD (rear LCD) and the main LCD mounted on the foldable mobile phone by the backlight method.
【００２７】上記実施の形態によれば、１セットの光源
１２と導光板１５、１５’又は１９から成るバックライ
トユニットの表、裏の両面に設けたＬＣＤ３、３’（又
はＬＣＭ）を同時に表示させることができ、また、光源
１２を実装する面積、工数も削減できるので、低消費電
力、低コストかつ省スペースなバックライトタイプの液
晶表示装置を提供できる。According to the above-mentioned embodiment, the LCD 3 and 3 '(or LCM) provided on the front and back surfaces of the backlight unit consisting of one set of the light source 12 and the light guide plate 15, 15' or 19 are simultaneously displayed. In addition, since the area for mounting the light source 12 and the number of steps can be reduced, a backlight type liquid crystal display device with low power consumption, low cost and space saving can be provided.
【００２８】また、このバックライトタイプの液晶表示
装置には、ＬＣＤ３（又はＬＣＭ）を固定するために、
がたつき音の出ない爪１５ａ、１５ｂの組み、爪１５
ａ’、１５ｂ’の組み、又は１９ａ、１９ｂの組みを有
するバックライトユニットを用いるので、バックライト
とＬＣＤ３、３’（又はＬＣＭ）の間に異物が入った場
合でも、容易に再組立ができる。本実施の形態の液晶表
示装置は携帯用電話機などの携帯用表示機器に適してい
る。Further, in order to fix the LCD 3 (or LCM) to the backlight type liquid crystal display device,
A combination of claws 15a and 15b with no rattling noise, claw 15
Since the backlight unit having the combination of a ', 15b' or the combination of 19a, 19b is used, even if a foreign matter enters between the backlight and the LCD 3, 3 '(or LCM), it can be easily reassembled. . The liquid crystal display device of the present embodiment is suitable for a mobile display device such as a mobile phone.
【００２９】[0029]
【発明の効果】本発明によれば、１セットの光源と導光
板から成るバックライトユニットで二つのＬＣＤ（又は
ＬＣＭ）を表示させることができ、液晶表示装置の実装
面積、実装工数を低減でき、低消費電力、製造コストを
下げることができる。According to the present invention, two LCDs (or LCMs) can be displayed by a backlight unit consisting of a set of light sources and a light guide plate, and the mounting area and mounting man-hours of the liquid crystal display device can be reduced. , Low power consumption, and low manufacturing cost.
【００３０】また、このバックライトタイプの液晶表示
装置では、ＬＣＤ（又はＬＣＭ）を固定するための、が
たつき音の出ない爪を有するバックライトユニットとＬ
ＣＤ（又はＬＣＭ）の間に異物が入った場合でも、容易
に再組立ができる。Further, in this backlight type liquid crystal display device, a backlight unit for fixing the LCD (or LCM) and having a claw with no rattling noise and L
Even if a foreign matter enters between the CD (or LCM), it can be easily reassembled.
【図１】 本発明の実施の形態の二つのＬＣＤを表裏面
に装着するための導光板の組み立て前の構成を示す斜視
図である。FIG. 1 is a perspective view showing a configuration before assembly of a light guide plate for mounting two LCDs according to an embodiment of the present invention on front and back surfaces.
【図２】 図１の導光板の組立後の斜視図（図２
（ａ））と図２（ａ）のＡ−Ａ線断面視図（図２
（ｂ））である。2 is a perspective view of the light guide plate of FIG. 1 after assembly (see FIG.
(A)) and the sectional view on the AA line of FIG.
(B)).
【図３】 図１、図２に示すバックライトユニットの両
面にＬＣＤを配置する場合の組み立て前の構成を示す斜
視図である。FIG. 3 is a perspective view showing a configuration before assembly when LCDs are arranged on both sides of the backlight unit shown in FIGS. 1 and 2.
【図４】 図１のＡ−Ａ線断面視図である。4 is a cross-sectional view taken along the line AA of FIG.
【図５】 図２（ａ）のＢ−Ｂ線断面視図である。5 is a sectional view taken along line BB of FIG. 2 (a).
【図６】 本発明の実施の形態のバックライトユニット
部分の拡大断面図である。FIG. 6 is an enlarged cross-sectional view of a backlight unit portion according to the embodiment of the present invention.
【図７】 従来技術のＬＣＤをバックライトユニットに
取り付ける工程を示す斜視図（図７（ａ））と組立後の
側断面図（図７（ｂ））である。7A and 7B are a perspective view (FIG. 7A) and a side sectional view after assembly (FIG. 7B) showing a process of attaching a conventional LCD to a backlight unit.
【図８】 従来技術の液晶表示装置の側断面図である。FIG. 8 is a side sectional view of a conventional liquid crystal display device.
【図９】 従来技術の液晶表示装置の要部側断面図であ
る。FIG. 9 is a side sectional view of a main part of a conventional liquid crystal display device.
１ 表基板 ２ 裏基板 ３、３’ ＬＣＤ ５、６ 電極用配線 ７ 回路基板 ８ ＬＳＩ（ＩＣ） ９ 回路基板部 １１ 導光板 １２ 光源 １３ 基板 １５、１５’ 導光板 １５ａ 固定爪 １５ｂ 可動爪 １６ 反射板 １７ プリント基板 １９ 導光板 １９ａ固定爪 １９ｂ 可動爪 ２１ 導光板 ２１ａ、２１ｂ 爪 1 front substrate 2 back substrate 3,3 'LCD 5,6 electrode wiring 7 Circuit board 8 LSI (IC) 9 Circuit board part 11 Light guide plate 12 light source 13 substrate 15, 15 'Light guide plate 15a Fixed claw 15b movable claw 16 reflector 17 Printed circuit board 19 Light guide plate 19a Fixed claw 19b Movable claw 21 light guide plate 21a, 21b nail
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｆ２１Ｙ 101:02 Ｆ２１Ｙ 101:02 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) // F21Y 101: 02 F21Y 101: 02
Claims (3)
画素電極が設けられた第２の基板を前記両方の電極が対
向配置されるように重ね合わせ、前記第１の基板と第２
の基板の間の画素領域に液晶を封入した液晶表示部（Ｌ
ＣＤ）を二つ設け、 二つの液晶表示部（ＬＣＤ）の間に挟み込んだ導光板
と、 該導光板の端部に配置した光源とを備えたことを特徴と
する液晶表示装置。1. A first substrate provided with a pixel electrode and a second substrate provided with a counter pixel electrode are overlapped with each other so that both electrodes are arranged to face each other, and the first substrate and the second substrate are stacked.
Liquid crystal display unit (L
A liquid crystal display device comprising two CDs, a light guide plate sandwiched between two liquid crystal display parts (LCDs), and a light source arranged at an end of the light guide plate.
ぞれ対応した一対の導光性材料からなり、 該一対の導光板の間に反射板を配置したことを特徴とす
る請求項１記載の液晶表示装置。2. The light guide plate is made of a pair of light guide materials corresponding to each liquid crystal display unit (LCD), and a reflection plate is arranged between the pair of light guide plates. Liquid crystal display device.
込むための傾斜部付きの固定爪と可動爪とを備えたこと
を特徴とする請求項１記載の液晶表示装置。3. The liquid crystal display device according to claim 1, wherein the light guide plate is provided with a fixed claw with a slanted part for sandwiching each liquid crystal display (LCD) and a movable claw.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001382024A JP2003185994A (en) | 2001-12-14 | 2001-12-14 | Liquid crystal display device |
| PCT/JP2002/012810 WO2003052504A1 (en) | 2001-12-14 | 2002-12-05 | Liquid crystal display device |
| TW091135566A TW200301384A (en) | 2001-12-14 | 2002-12-09 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001382024A JP2003185994A (en) | 2001-12-14 | 2001-12-14 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003185994A true JP2003185994A (en) | 2003-07-03 |
Family
ID=19187403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001382024A Pending JP2003185994A (en) | 2001-12-14 | 2001-12-14 | Liquid crystal display device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2003185994A (en) |
| TW (1) | TW200301384A (en) |
| WO (1) | WO2003052504A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1793304A2 (en) * | 2005-12-01 | 2007-06-06 | Samsung Electronics Co., Ltd. | Information processing apparatus and manufacturing method thereof |
| JP2007178463A (en) * | 2005-12-26 | 2007-07-12 | Matsushita Electric Works Ltd | Planar light emitter, and liquid crystal display apparatus equipped with the same |
| CN100419531C (en) * | 2003-11-01 | 2008-09-17 | 鸿富锦精密工业（深圳）有限公司 | Light guide device and back light module assmbly |
| JP2009020338A (en) * | 2007-07-12 | 2009-01-29 | Yazaki Corp | Lcd holding device and meter for vehicle |
| WO2016004726A1 (en) * | 2014-07-11 | 2016-01-14 | 京东方科技集团股份有限公司 | Double-surface display panel and double-surface display apparatus |
| CN105974670A (en) * | 2016-07-25 | 2016-09-28 | 深圳市华星光电技术有限公司 | Backlight source and backlight module |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0373927A (en) * | 1989-08-16 | 1991-03-28 | Matsushita Electric Ind Co Ltd | Liquid crystal display device |
| JPH04329516A (en) * | 1991-04-30 | 1992-11-18 | Koufu Nippon Denki Kk | Customer display device |
| JPH0990325A (en) * | 1995-09-26 | 1997-04-04 | Toshiba Corp | Liquid crystal display device |
| JP3728981B2 (en) * | 1998-08-26 | 2005-12-21 | セイコーエプソン株式会社 | Liquid crystal device and electronic device |
| KR100444694B1 (en) * | 1999-08-04 | 2004-08-18 | 엘지전자 주식회사 | Apparatus For Liquid Crystal Display in A Folder Form Mobile Telecommunication Terminal |
| KR20020040989A (en) * | 2000-11-25 | 2002-05-31 | 주식회사 현대 디스플레이 테크놀로지 | Backlight unit for irradiating to upper and lower |
| JP2002372711A (en) * | 2001-06-14 | 2002-12-26 | Seiko Instruments Inc | Liquid crystal display device |
-
2001
- 2001-12-14 JP JP2001382024A patent/JP2003185994A/en active Pending
-
2002
- 2002-12-05 WO PCT/JP2002/012810 patent/WO2003052504A1/en unknown
- 2002-12-09 TW TW091135566A patent/TW200301384A/en unknown
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419531C (en) * | 2003-11-01 | 2008-09-17 | 鸿富锦精密工业（深圳）有限公司 | Light guide device and back light module assmbly |
| EP1793304A2 (en) * | 2005-12-01 | 2007-06-06 | Samsung Electronics Co., Ltd. | Information processing apparatus and manufacturing method thereof |
| EP1793304A3 (en) * | 2005-12-01 | 2012-06-20 | Samsung Electronics Co., Ltd. | Information processing apparatus and manufacturing method thereof |
| JP2007178463A (en) * | 2005-12-26 | 2007-07-12 | Matsushita Electric Works Ltd | Planar light emitter, and liquid crystal display apparatus equipped with the same |
| JP2009020338A (en) * | 2007-07-12 | 2009-01-29 | Yazaki Corp | Lcd holding device and meter for vehicle |
| WO2016004726A1 (en) * | 2014-07-11 | 2016-01-14 | 京东方科技集团股份有限公司 | Double-surface display panel and double-surface display apparatus |
| US9997583B2 (en) | 2014-07-11 | 2018-06-12 | Boe Technology Group Co., Ltd. | Double-faced display panel and double-faced display device |
| CN105974670A (en) * | 2016-07-25 | 2016-09-28 | 深圳市华星光电技术有限公司 | Backlight source and backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003052504A1 (en) | 2003-06-26 |
| TW200301384A (en) | 2003-07-01 |
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