JP2010066596A - Electrooptical device and method of manufacturing the same, and electronic apparatus - Google Patents

Electrooptical device and method of manufacturing the same, and electronic apparatus Download PDF

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JP2010066596A
JP2010066596A JP2008233721A JP2008233721A JP2010066596A JP 2010066596 A JP2010066596 A JP 2010066596A JP 2008233721 A JP2008233721 A JP 2008233721A JP 2008233721 A JP2008233721 A JP 2008233721A JP 2010066596 A JP2010066596 A JP 2010066596A
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JP5398203B2 (en
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Masahiro Kosuge
将洋 小菅
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Epson Imaging Devices Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptical device having a narrow frame, in which material selection for at least a sealing material is flexible as well as a curing rate of the sealing material is increased, and the manufacture cost can be reduced. <P>SOLUTION: The electrooptical device 1 includes a first substrate CF, a second substrate AR opposing to the first substrate, and a circular sealing material 2 formed on the first substrate and the second substrate and surrounding a display area 3. The sealing material is an adhesive containing a UV-curable component. The display area has a plurality of color layers; and each color layer exhibits a wavelength different from others, of the light which the color layer mainly transmits. In an area of at least one substrate CF in the first substrate and the second substrate, the area where the sealing material overlaps, such a color layer 9 is formed that transmits light in a shorter wavelength area than in the color layer that mainly transmits light at the shortest wavelength in the plurality of color layers. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、液晶装置等の電気光学装置、および電気光学装置の製造方法に関する。特に、前記電気光学装置に用いるシール材を硬化させる技術に関する。   The present invention relates to an electro-optical device such as a liquid crystal device and a method for manufacturing the electro-optical device. In particular, the present invention relates to a technique for curing a sealing material used in the electro-optical device.

近年、ＰＤＡ（Ｐersonal Ｄigital Ａssistant）、パームトップ・コンピュータ等の小型情報電子機器（以下、電子機器）の普及に伴い、液晶表示装置（Ｌiquid Ｃrystal Ｄisplay：電気光学装置）が広く使用されるようになっている。
一般的な液晶表示装置は、アレイ基板と、アレイ基板に対向配置されたカラーフィルタ基板と、両基板の表示領域の外側周縁に環状に設けられ、両基板間に所定のギャップを設けて接合する接着材料からなるシール材と、両基板間のシール材の内側に封入された液晶とを備える。アレイ基板は、透明基板上に画素電極、薄膜トランジスタ等が設けられており、カラーフィルタ基板は、透明基板上にカラーフィルタと共通電極が形成されているとともに、各画素の境界にブラックマトリックスが設けられている。そして、カラーフィルタ基板の表示領域の外側にはブラックマトリクッスの額縁が形成され、カラーフィルタ基板の表示領域及びシール材との間を遮光している。 In recent years, with the spread of small information electronic devices (hereinafter referred to as electronic devices) such as PDAs (Personal Digital Assistants) and palmtop computers, liquid crystal display devices (Liquid Crystal Displays: electro-optical devices) have come to be widely used. ing.
A general liquid crystal display device is provided in an annular shape on the outer periphery of the display area of an array substrate, a color filter substrate disposed opposite to the array substrate, and the two substrates, and is bonded with a predetermined gap between the substrates. A sealing material made of an adhesive material and a liquid crystal sealed inside the sealing material between both substrates are provided. The array substrate is provided with a pixel electrode, a thin film transistor, etc. on a transparent substrate, and the color filter substrate is provided with a color filter and a common electrode on the transparent substrate, and a black matrix is provided at the boundary of each pixel. ing. A black matrix frame is formed outside the display area of the color filter substrate to shield light from the display area of the color filter substrate and the sealing material.

ところで、近年においてはＯＤＦ（one-drop-fill）方式等により狭額縁化が進んでいる。従来、アレイ基板側からシール材に光を照射してシール材を硬化させた後、アレイ基板の外側外周に遮光テープ等を貼っていたが、狭額縁化が進むと、この遮光テープを貼る領域が狭くなってくる。そのためアレイ基板の内側に遮光膜を形成する必要が生じる。しかしながら、アレイ基板の内側に遮光膜を形成すると、アレイ基板側からはシール材に光を照射することができなくなる。一方、アレイ基板に対向するカラーフィルタ基板においても、表示領域の見切りのため、パネル外周をブラックマスク等により遮光するためそのブラックマスク等によりシール材形成領域も遮光されてしまう。   By the way, in recent years, narrowing of the frame has been advanced by an ODF (one-drop-fill) method or the like. Conventionally, after the sealing material was irradiated with light from the array substrate side to cure the sealing material, a light shielding tape or the like was applied to the outer periphery of the array substrate. Becomes narrower. Therefore, it is necessary to form a light shielding film inside the array substrate. However, if a light shielding film is formed inside the array substrate, it becomes impossible to irradiate the sealing material with light from the array substrate side. On the other hand, also in the color filter substrate facing the array substrate, the outer periphery of the panel is shielded by a black mask or the like in order to cut off the display region, so that the seal material forming region is also shielded by the black mask or the like.

そこで、額縁を、青色帯域の光を透過させる着色層で形成し、シール材を、青色帯域の波長の光に光反応域を有する光硬化性材料とし、カラーフィルタ基板側から青色帯域の光を照射し、ブラックマトリックスの額縁を透過した青色帯域の光をシール材に入射させることでシール材の硬化速度を高める技術が知られている（例えば、特許文献１）。
特開２００７−４１６２５号公報 Therefore, the frame is formed of a colored layer that transmits light in the blue band, the sealing material is a photocurable material having a photoreactive area for light in the wavelength of the blue band, and light in the blue band is transmitted from the color filter substrate side. A technique for increasing the curing speed of a sealing material by irradiating and making blue band light that has passed through a frame of a black matrix incident on the sealing material is known (for example, Patent Document 1).
JP 2007-41625 A

しかし、特許文献１の技術は、表示領域に用いる青色の着色層を兼用するため、シール材の硬化特性と、着色層の透過特性が一致させるのが困難であり、シール材の接着不足が生じたり、材料選択に制約があり、製造コストの面で問題があった。
そこで、本発明は、上記従来例の未解決の課題に着目してなされたものであり、少なくともシール材の選択に自由度を持たせ、しかもシール材の硬化速度を高めて製造コストの低減化を図ることができる狭額縁の電気光学装置、電気光学装置の製造方法、および電子機器を提供することを目的としている。 However, since the technique of Patent Document 1 also serves as a blue colored layer used for the display area, it is difficult to match the curing characteristics of the sealing material and the transmission characteristics of the colored layer, resulting in insufficient adhesion of the sealing material. In addition, there was a problem in terms of manufacturing cost due to restrictions on material selection.
Accordingly, the present invention has been made paying attention to the unsolved problems of the above-described conventional example, and at least gives a degree of freedom in selecting a sealing material, and further increases the curing speed of the sealing material to reduce the manufacturing cost. An object of the present invention is to provide an electro-optical device having a narrow frame, a method for manufacturing the electro-optical device, and an electronic apparatus.

上記目的を達成するために、本発明に係る電気光学装置は、第１基板と、前記第１基板に対向配置された第２基板と、前記第１基板および前記第２基板に形成され、表示領域を囲む環状のシール材と、を有する電気光学装置において、前記シール材が紫外線硬化成分を含み、前記表示領域には、複数の着色層を有し、前記複数の着色層は、主として透過する光の波長が各々異なっており、前記第１基板および、前記第２基板のうち少なくとも一方の基板の前記シール材と重なる領域に、前記複数の着色層のうち、主として透過する光の波長が最も短い着色層よりも、短波長側の光を透過する着色層が形成されてなることを特徴とする。表示領域に設ける複数の着色層としては、青、緑及び赤が典型的に採用される。このうち、青の着色層は３８０〜５５０ｎｍの波長の光を、緑の着色層は４７０〜６１０ｎｍの波長の光を、赤の着色層は５７０〜８００ｎｍの波長の光を透過させる。一方、シール材と重なる領域に形成する着色層としては、２３０〜３７０ｎｍの波長の光を主として透過する着色層を採用する。   In order to achieve the above object, an electro-optical device according to the present invention is formed on a first substrate, a second substrate opposed to the first substrate, the first substrate and the second substrate, and displays An electro-optical device having an annular sealing material surrounding the region, wherein the sealing material contains an ultraviolet curing component, the display region has a plurality of colored layers, and the plurality of colored layers mainly transmit. The wavelengths of light are different from each other, and the wavelength of light that is mainly transmitted among the plurality of colored layers is the most in the region overlapping the sealing material of at least one of the first substrate and the second substrate. A colored layer that transmits light on a shorter wavelength side than a short colored layer is formed. Blue, green, and red are typically employed as the plurality of colored layers provided in the display area. Among these, the blue colored layer transmits light with a wavelength of 380 to 550 nm, the green colored layer transmits light with a wavelength of 470 to 610 nm, and the red colored layer transmits light with a wavelength of 570 to 800 nm. On the other hand, a colored layer that mainly transmits light having a wavelength of 230 to 370 nm is employed as the colored layer formed in the region overlapping with the sealing material.

このような構成とすると、紫外線硬化樹脂を主成分とするシール材の有効硬化波長領域の光が着色層を効率よく透過し、シール材に吸収されることとなるので、シール材を容易に硬化させることができる。そのため、シール材と重なる領域の着色層を、見切り等の遮光部材として利用しつつ、接着強度不足を未然に防止することができ、材料選択の自由度が高い紫外線硬化樹脂を用いるため、製造コストの低減化を図ることができる。   With such a configuration, light in the effective curing wavelength region of the sealing material mainly composed of an ultraviolet curable resin is efficiently transmitted through the colored layer and absorbed by the sealing material, so that the sealing material is easily cured. Can be made. Therefore, it is possible to prevent insufficient adhesion strength while using the colored layer in the region overlapping with the sealing material as a light-shielding member such as parting out, and because it uses an ultraviolet curable resin with a high degree of freedom in material selection, the manufacturing cost Can be reduced.

また、本発明の電気光学装置の製造方法は、第１基板と、前記第１基板に対向配置された第２基板と、前記第１基板および前記第２基板に形成され、表示領域を囲む環状のシール材と、を有し、前記表示領域に、主として透過する光の波長が各々異なる複数の着色層が形成されてなる電気光学装置の製造方法において、前記第１基板の前記シール材と重なる領域に、前記複数の着色層のうち、主として透過する光の波長が最も短い着色層よりも短波長側の光を透過する着色層を形成する工程と、前記第１基板および前記第２基板のうち少なくとも一方の基板に紫外線硬化成分を含む前記シール材を塗布する工程と、前記第１基板および前記第２基板を貼り合わせる工程と、前記第１基板の側から、前記シール材に対して紫外線を照射する工程と、を含んでなることを特徴とする。   According to another aspect of the invention, there is provided an electro-optical device manufacturing method including a first substrate, a second substrate disposed opposite to the first substrate, an annular shape formed on the first substrate and the second substrate and surrounding a display region. In the method for manufacturing an electro-optical device, in which a plurality of colored layers having different wavelengths of mainly transmitted light are formed in the display region, the sealing material overlaps with the sealing material of the first substrate. Forming a colored layer that transmits light on a shorter wavelength side than the colored layer having the shortest wavelength of transmitted light among the plurality of colored layers in the region; and the first substrate and the second substrate. Applying the sealing material containing an ultraviolet curing component to at least one of the substrates, bonding the first substrate and the second substrate, and applying ultraviolet rays to the sealing material from the side of the first substrate Irradiation process Characterized by comprising.

本発明の電気光学装置の製造方法によれば、紫外線硬化成分を含むシール材に、シール材に重なる領域に設けた着色層を介して、有効硬化波長領域の光が効率よく照射される。
さらに、本発明の電子機器は、上記構成の電気光学装置を備えた電子機器である。このような構成とすると、明るい表示が可能で、且つ操作性に優れた電子機器を提供することができる。 According to the method for manufacturing an electro-optical device of the present invention, light in an effective curing wavelength region is efficiently irradiated onto a sealing material containing an ultraviolet curable component via a colored layer provided in a region overlapping the sealing material.
Furthermore, an electronic apparatus of the present invention is an electronic apparatus including the electro-optical device having the above configuration. With such a structure, an electronic device that can display brightly and has excellent operability can be provided.

以下、本発明を実施するための最良の形態（以下、実施形態という。）を、図面を参照しながら詳細に説明する。
（第１実施形態：液晶表示装置及び液晶表示装置の製造方法）
本発明に係る第１実施形態の電気光学装置としての液晶表示装置について説明する。
図１は液晶表示装置を示す平面図、図２は図１のＡ−Ａ線矢視断面図である。 Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described in detail with reference to the drawings.
First Embodiment: Liquid Crystal Display Device and Liquid Crystal Display Device Manufacturing Method
A liquid crystal display device as an electro-optical device according to a first embodiment of the present invention will be described.
1 is a plan view showing a liquid crystal display device, and FIG. 2 is a cross-sectional view taken along line AA in FIG.

本実施形態の液晶表示装置１は、アレイ基板ＡＲと、このアレイ基板ＡＲに対向配置されたカラーフィルタ基板ＣＦと、両基板ＡＲ，ＣＦの外側周縁に環状に設けられて両基板ＡＲ，ＣＦを接合するシール材２と、両基板ＡＲ，ＣＦ間のシール材２の内側に封入された液晶ＬＣとを備えた装置である。
シール材２は、紫外線硬化成分を含み、両基板ＡＲ，ＣＦの表示領域（カラーフィルタ基板ＣＦは表示領域３）の外側周縁に四角環状に設けられ、両基板ＡＲ，ＣＦ間を所定のギャップを設けた状態で接合している。 The liquid crystal display device 1 of the present embodiment includes an array substrate AR, a color filter substrate CF disposed opposite to the array substrate AR, and an annular outer periphery of both the substrates AR and CF. It is an apparatus provided with a sealing material 2 to be bonded and a liquid crystal LC sealed inside the sealing material 2 between both substrates AR and CF.
The sealing material 2 includes an ultraviolet curable component, and is provided in a square ring shape on the outer periphery of the display area of the substrates AR and CF (the display area 3 is the color filter substrate CF). A predetermined gap is provided between the substrates AR and CF. Joined in the provided state.

ここで、本実施形態の紫外線硬化成分を含むシール材２は、例えば、光硬化性のアクリル基、チオール基等を含有したアクリル系、チオール系接着剤に紫外線を照射して形成される接着剤である。このような接着剤は、吸収する光エネルギー量に応じて重合が進行し、重合が進行するにつれて組成や体積の変化を生じる。重合度（硬化度）は、照射する光エネルギー量を制御することによりを制御可能であり、具体的には照射する光の光強度を強くするほど、あるいは照射する時間を長くするほど硬化度が高くなる。このシール材２は、硬化速度を高めるのに有効な光の波長領域（有効硬化波長領域）が２３０〜３７０ｎｍの範囲である。また、シール材２の硬化速度が増大するピーク波長は、２８０ｎｍ〜３３０ｎｍの範囲である。   Here, the sealing material 2 containing the ultraviolet curable component of the present embodiment is, for example, an adhesive formed by irradiating an acrylic or thiol adhesive containing a photocurable acrylic group or thiol group with ultraviolet rays. It is. Such an adhesive undergoes polymerization in accordance with the amount of light energy absorbed, and changes in composition and volume as the polymerization proceeds. The degree of polymerization (degree of cure) can be controlled by controlling the amount of light energy to be irradiated. Specifically, the degree of cure increases as the light intensity of the irradiated light increases or as the irradiation time increases. Get higher. The sealing material 2 has a wavelength range (effective curing wavelength range) of light effective for increasing the curing rate in the range of 230 to 370 nm. The peak wavelength at which the curing rate of the sealing material 2 increases is in the range of 280 nm to 330 nm.

アレイ基板ＡＲは、ガラス基板等の透明基板４の液晶ＬＣ側の表面に、図示しないがマトリクス状に形成された複数本の走査線及び信号線、ＴＦＴ、走査線及び信号線とで囲まれた領域を覆う透明導電材料からなるアレイ側電極５が設けられている。このアレイ基板ＡＲには、カラーフィルタ基板ＣＦに対して一辺側から張り出した張出部６が設けられており、この張出部６の端部（アレイ基板ＡＲの短辺側の端部）に沿って端子群が形成されている。また、張出部６には、液晶表示装置１を電気的に駆動させる液晶駆動用ＩＣ７が実装されている。   The array substrate AR is surrounded on the surface of the transparent substrate 4 such as a glass substrate on the liquid crystal LC side by a plurality of scanning lines and signal lines, TFTs, scanning lines and signal lines (not shown) formed in a matrix. An array-side electrode 5 made of a transparent conductive material that covers the region is provided. The array substrate AR is provided with an overhanging portion 6 protruding from one side with respect to the color filter substrate CF, and at the end of the overhanging portion 6 (the end on the short side of the array substrate AR). A terminal group is formed along. A liquid crystal driving IC 7 that electrically drives the liquid crystal display device 1 is mounted on the overhanging portion 6.

カラーフィルタ基板ＣＦは、ガラス等の透明基板８上に、樹脂製の額縁９と、複数配列された着色画素（不図示）を覆う透明導電材料からなるカラーフィルタ側電極１１とが形成されたものである。
着色画素は、赤色、緑色、青色のフィルタ機能を有するものであり、各着色画素の境界にはマトリックス部が設けられている。カラーフィルタ側電極１１は、全ての着色画素及びマトリクス部全体を覆って設けられている。 The color filter substrate CF is obtained by forming a resin frame 9 and a color filter side electrode 11 made of a transparent conductive material covering a plurality of colored pixels (not shown) on a transparent substrate 8 such as glass. It is.
The colored pixels have red, green, and blue filter functions, and a matrix portion is provided at the boundary between the colored pixels. The color filter side electrode 11 is provided so as to cover all the colored pixels and the entire matrix portion.

また、カラーフィルタ基板ＣＦの表示領域３を覆う位置には、青色の着色層（３８０〜５５０ｎｍの波長の光を透過）、緑色の着色層（４７０〜６１０ｎｍの波長の光を透過）及び赤色の着色層（５７０〜８００ｎｍの波長の光を透過）等からなる複数の着色層が層状に設けられている。
樹脂材料からなる額縁９は、着色画素が形成された領域（図１の表示領域３）の周辺部を囲むように設けられており、カラーフィルタ基板ＣＦに設けた複数の着色層の透過する光の波長が最も短い着色層（例えば、青色の着色層）よりも短波長側である２３０〜３７０ｎｍの波長の光を透過させる色（例えば青色から群青色の間の色）に着色した樹脂層である。 Further, at a position covering the display region 3 of the color filter substrate CF, a blue colored layer (transmits light with a wavelength of 380 to 550 nm), a green colored layer (transmits light with a wavelength of 470 to 610 nm), and red A plurality of colored layers including a colored layer (transmitting light having a wavelength of 570 to 800 nm) and the like are provided in layers.
The frame 9 made of a resin material is provided so as to surround the periphery of the area where the colored pixels are formed (display area 3 in FIG. 1), and light transmitted through a plurality of colored layers provided on the color filter substrate CF. A resin layer colored in a color (for example, a color between blue and ultra-blue) that transmits light having a wavelength of 230 to 370 nm, which is shorter than the colored layer having the shortest wavelength (for example, a blue colored layer). is there.

また、アレイ基板ＡＲのアレイ側電極５及びカラーフィルタ側電極１１は、張出部６において液晶駆動用ＩＣ７の出力側の電極パッド（バンプ）にそれぞれ電気的に接続されており、液晶駆動用ＩＣ７は各電極に走査信号やデータ信号といった駆動信号を出力して供給している。一方、張出部６の端部に沿って設けられた端子群は、液晶駆動用ＩＣ７の入力側の電極パッド群（バンプ）に電気的に接続されており、液晶駆動用ＩＣ７に電源信号や液晶駆動用ＩＣ７を動作させるための駆動（ロジック）信号が供給される。   The array-side electrode 5 and the color filter-side electrode 11 of the array substrate AR are electrically connected to the output-side electrode pads (bumps) of the liquid crystal driving IC 7 in the overhang portion 6, respectively. Outputs and supplies a drive signal such as a scanning signal or a data signal to each electrode. On the other hand, the terminal group provided along the end of the overhanging portion 6 is electrically connected to the electrode pad group (bump) on the input side of the liquid crystal driving IC 7, and a power signal or A drive (logic) signal for operating the liquid crystal drive IC 7 is supplied.

このような構成の液晶表示装置１は、後述するバックライトと組み合わされ、バックライトからの光の透過を、カラーフィルタ基板ＣＦに複数配列された着色画素で制御することによって所定の画像を表示するようになっている。   The liquid crystal display device 1 configured as described above is combined with a backlight described later, and displays a predetermined image by controlling the transmission of light from the backlight with a plurality of colored pixels arranged on the color filter substrate CF. It is like that.

次に、図２を参照して上記構成の液晶表示装置１を製造する方法について説明する。
先ず、カラーフィルタ基板ＣＦのカラーフィルタ側電極１１を形成した面側であって、シール材２が重なる領域（表示領域３の外側周縁）に、２３０〜３７０ｎｍの波長の光を透過させる色（例えば青色から群青色の間の色）に着色した額縁９を形成する。
次いで、カラーフィルタ基板ＣＦの額縁９を形成した位置に、四角環状のシール材２を塗布する。
次いで、カラーフィルタ基板ＣＦとシール材２とで囲まれた部分に液晶ＬＣを配置する。 Next, a method of manufacturing the liquid crystal display device 1 having the above configuration will be described with reference to FIG.
First, a color that transmits light having a wavelength of 230 to 370 nm (for example, the outer peripheral edge of the display region 3) on the surface of the color filter substrate CF on which the color filter side electrode 11 is formed and the seal material 2 overlaps (for example, A frame 9 colored in a color between blue and ultra-blue is formed.
Next, a rectangular annular sealing material 2 is applied to the position where the frame 9 of the color filter substrate CF is formed.
Next, the liquid crystal LC is disposed in a portion surrounded by the color filter substrate CF and the sealing material 2.

次いで、シール材２を介してカラーフィルタ基板ＣＦ及びアレイ基板ＡＲを対向配置した状態で貼り合わせ、カラーフィルタ基板ＣＦ及びアレイ基板ＡＲシール材２の間のシール材２内に液晶ＬＣを封入する。
次いで、図２に示すように、紫外線１５を、カラーフィルタ基板ＣＦの前面側の外側周縁に向けて照射する。
透明基板８を透過した紫外線１５は、２３０〜３７０ｎｍの波長領域の光のみが額縁９を透過してシール材２に入射する。本実施形態のシール材２は、有効硬化波長領域が２３０〜３７０ｎｍの範囲なので、２３０〜３７０ｎｍの波長領域の光が効率良く入射され、シール材２の硬化が促進される。 Next, the color filter substrate CF and the array substrate AR are bonded together with the seal material 2 interposed therebetween, and the liquid crystal LC is sealed in the seal material 2 between the color filter substrate CF and the array substrate AR seal material 2.
Next, as shown in FIG. 2, the ultraviolet rays 15 are irradiated toward the outer peripheral edge on the front side of the color filter substrate CF.
In the ultraviolet ray 15 that has passed through the transparent substrate 8, only light in the wavelength region of 230 to 370 nm passes through the frame 9 and enters the sealing material 2. Since the sealing material 2 of the present embodiment has an effective curing wavelength region in the range of 230 to 370 nm, light in the wavelength region of 230 to 370 nm is efficiently incident, and curing of the sealing material 2 is promoted.

ここで、本発明の短波長側の光を透過する着色層、２３０〜３７０ｎｍの範囲の光を透過させる着色層が額縁９に対応している。
したがって、本実施形態の液晶表示装置１は、シール材２を材料選択の自由度が高い紫外線硬化成分を含むものとしているので、特定波長の光に対して硬化反応速度が高まるシール材と特定の色帯域の光を透過させる額縁を使用した従来装置と比較して、製造コストの低減化を図ることができる。 Here, the colored layer that transmits light on the short wavelength side of the present invention and the colored layer that transmits light in the range of 230 to 370 nm correspond to the frame 9.
Therefore, the liquid crystal display device 1 of the present embodiment includes the sealing material 2 containing an ultraviolet curing component having a high degree of freedom in material selection. The manufacturing cost can be reduced as compared with a conventional device using a frame that transmits light in the color band.

また、額縁９は、カラーフィルタ基板ＣＦの前面側から紫外線１５を照射すると、２３０〜３７０ｎｍの波長領域の光のみを透過させてシール材２に入射するので、シール材２の硬化速度を高めることができる。このため、液晶表示装置１の製造効率を高めることができる。
また、シール材２は、額縁９に覆われた位置に設けられているので、カラーフィルタ基板ＣＦの表示領域３を広い面積に設定した狭額縁化を図った液晶表示装置１を提供することができる。 Further, when the frame 9 is irradiated with ultraviolet rays 15 from the front side of the color filter substrate CF, only the light in the wavelength region of 230 to 370 nm is transmitted and incident on the sealing material 2, so that the curing speed of the sealing material 2 is increased. Can do. For this reason, the manufacturing efficiency of the liquid crystal display device 1 can be improved.
In addition, since the sealing material 2 is provided at a position covered with the frame 9, it is possible to provide the liquid crystal display device 1 designed to have a narrow frame with the display area 3 of the color filter substrate CF set to a large area. it can.

また、カラーフィルタ基板ＣＦの外周縁に樹脂製の額縁９を設けたことで、電気光学パネル１の外部からの光漏れを確実に防止することができるとともに、シール材２と額縁９との接着性を高めることができる。
ここで、本実施形態の額縁９は、波長領域が２３０〜３７０ｎｍの範囲のみの光を透過させる色に着色した樹脂層であるが、シール材２の硬化速度が増大する２８０ｎｍ〜３３０ｎｍの範囲のピーク波長に合わせた波長領域が２８０〜３３０ｎｍの範囲のみの光を透過させる色に着色した樹脂層にすると、シール材２の硬化速度がさらに高まり、液晶表示装置１の製造効率を高めることができる。 Further, by providing the resin frame 9 on the outer peripheral edge of the color filter substrate CF, light leakage from the outside of the electro-optical panel 1 can be surely prevented, and the seal material 2 and the frame 9 can be bonded. Can increase the sex.
Here, the frame 9 of this embodiment is a resin layer colored in a color that transmits light only in the wavelength range of 230 to 370 nm, but in the range of 280 to 330 nm in which the curing rate of the sealing material 2 increases. If the resin layer is colored in a color that transmits light only in the wavelength range of 280 to 330 nm in accordance with the peak wavelength, the curing rate of the sealing material 2 is further increased, and the manufacturing efficiency of the liquid crystal display device 1 can be increased. .

また、本実施形態のシール材２は、光硬化樹脂とともに、熱硬化性を有する成分を含有した接着剤を含んだものであってもよい。熱硬化性を有する成分を含有した接着剤としては、例えばエポキシ基等を含有したエポキシ系接着剤が考えられる。このシール材２に対して光硬化後に適宜熱処理を行うと、さらに硬化速度を促進することができる。   Moreover, the sealing material 2 of this embodiment may contain the adhesive agent containing the component which has thermosetting with a photocurable resin. As an adhesive containing a thermosetting component, for example, an epoxy-based adhesive containing an epoxy group or the like can be considered. If the sealing material 2 is appropriately heat-treated after photocuring, the curing rate can be further accelerated.

（第２実施形態：液晶表示装置）
次に、本発明に係る第２実施形態の電気光学装置としての液晶表示装置について説明する。
図３は、第２実施形態の液晶表示装置を示す断面図であり、図１及び図２に示した構成と同一構成部分には、同一符号を付してその説明を省略する。
本実施形態のアレイ基板ＡＲには、透明基板４の液晶ＬＣ側の表面に設けたアレイ側電極５の表示領域の周辺部を囲む樹脂材料からなる額縁１２が、シール材２を覆う位置に設けられている。 Second Embodiment: Liquid Crystal Display Device
Next, a liquid crystal display device as an electro-optical device according to a second embodiment of the invention will be described.
FIG. 3 is a cross-sectional view showing the liquid crystal display device according to the second embodiment. The same components as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.
In the array substrate AR of the present embodiment, a frame 12 made of a resin material surrounding the periphery of the display area of the array-side electrode 5 provided on the surface of the transparent substrate 4 on the liquid crystal LC side is provided at a position covering the sealing material 2. It has been.

この額縁１２も、カラーフィルタ基板ＣＦの表示領域３に設けた複数の着色層の透過する光の波長が最も短い着色層（例えば、青色の着色層）よりも短波長側である２３０〜３７０ｎｍの範囲のみの光を透過させる色（例えば青色から群青色の間の色）に着色した樹脂層である。
そして、紫外線１５を、カラーフィルタ基板ＣＦの前面側の外側周縁と、アレイ基板ＡＲの背面側の外周周縁に向けて照射すると、透明基板４，８を通過した紫外線１５のうち２３０〜３７０ｎｍの波長領域の光のみが、額縁９，１２を透過してシール材２に入射する。
ここで、本発明の遮光層が額縁１２に対応している。 The frame 12 also has a wavelength of 230 to 370 nm, which is shorter than a colored layer (for example, a blue colored layer) having the shortest wavelength of light transmitted through a plurality of colored layers provided in the display region 3 of the color filter substrate CF. This is a resin layer colored in a color that transmits light only in a range (for example, a color between blue and group blue).
When the ultraviolet rays 15 are irradiated toward the outer peripheral edge on the front side of the color filter substrate CF and the outer peripheral edge on the back side of the array substrate AR, the wavelength of 230 to 370 nm among the ultraviolet rays 15 that have passed through the transparent substrates 4 and 8. Only the light in the region passes through the frames 9 and 12 and enters the sealing material 2.
Here, the light shielding layer of the present invention corresponds to the frame 12.

したがって、本実施形態の液晶表示装置１は、カラーフィルタ基板ＣＦの前面側に設けた額縁９とアレイ基板ＡＲの背面側に設けた額縁１２に、２３０〜３７０ｎｍの波長領域の光が透過してシール材２に入射するので、シール材２の硬化速度をさらに高めることができ、液晶表示装置１の製造効率を向上させることができる。   Therefore, in the liquid crystal display device 1 of the present embodiment, light in the wavelength region of 230 to 370 nm is transmitted through the frame 9 provided on the front side of the color filter substrate CF and the frame 12 provided on the back side of the array substrate AR. Since the light enters the sealing material 2, the curing speed of the sealing material 2 can be further increased, and the manufacturing efficiency of the liquid crystal display device 1 can be improved.

（第３実施形態：ＬＣＤユニット）
次に、第３実施形態としてＬＣＤユニットについて説明する。
図４に示すように、ＬＣＤユニット３０は、上述した各実施形態の液晶表示装置１と、この液晶表示装置１の背面に配設した照明装置としてのバックライト３１と、バックライト３１を支持する支持フレーム３２とを備えている。
符号３３のフレキシブルプリント基板（以下、ＦＰＣ）は、その一端側が液晶表示装置１の液晶駆動用ＩＣ７に電気的に接続され、一端に対向する他端側が支持フレーム３２に固定される。 (Third embodiment: LCD unit)
Next, an LCD unit will be described as a third embodiment.
As shown in FIG. 4, the LCD unit 30 supports the liquid crystal display device 1 of each of the above-described embodiments, a backlight 31 as an illumination device disposed on the back surface of the liquid crystal display device 1, and the backlight 31. And a support frame 32.
One end of the flexible printed circuit board (hereinafter referred to as FPC) 33 is electrically connected to the liquid crystal driving IC 7 of the liquid crystal display device 1, and the other end facing the one end is fixed to the support frame 32.

バックライト３１は、導光板３４と、導光板３４の背面に配置された反射板３５と、ＬＥＤチップ等の発光素子を備えた光源３６と、光学シート３７ａ，３７ｂとを備えている。このバックライト３１は、光源３６から射出された光を導光板３４の側面から内部に導き、反射板３５の作用により液晶表示装置１側へ射出することで、液晶表示装置１の照明装置として機能するようになっている。光学シート３７ａ，３７ｂは、導光板３４を通過した光を拡散、集光させるためのシートである。   The backlight 31 includes a light guide plate 34, a reflection plate 35 disposed on the back surface of the light guide plate 34, a light source 36 including a light emitting element such as an LED chip, and optical sheets 37a and 37b. The backlight 31 functions as an illuminating device for the liquid crystal display device 1 by guiding the light emitted from the light source 36 to the inside from the side surface of the light guide plate 34 and emitting it to the liquid crystal display device 1 side by the action of the reflection plate 35. It is supposed to be. The optical sheets 37 a and 37 b are sheets for diffusing and condensing light that has passed through the light guide plate 34.

そして、液晶表示装置１の背面とバックライト３１の前面とが必要に応じて透光性を有する第１粘着層３８により粘着されている。
本実施形態のＬＣＤユニット３０によると、カラーフィルタ基板ＣＦの表示領域３を広い面積に設定した狭額縁化を図った液晶表示装置１を備えているので、輝度、コントラスト比が良くなって、視認性を向上させたＬＣＤユニット３０を提供することができる。 And the back surface of the liquid crystal display device 1 and the front surface of the backlight 31 are adhered to each other by a first adhesive layer 38 having translucency as required.
According to the LCD unit 30 of this embodiment, since the liquid crystal display device 1 having a narrow frame with the display area 3 of the color filter substrate CF set to a large area is provided, the luminance and contrast ratio are improved, and the visual recognition is performed. The LCD unit 30 with improved performance can be provided.

（第４実施形態：携帯電話機：電子機器）
次に、図５は、本発明に係る第４実施形態の携帯電話機を示す概略斜視図である。
本実施形態の携帯電話機４０は、第１ケース４１と、第１ケース４１の長手方向端部にヒンジ結合されている第２ケース４２と、第１ケース４１に設けた保護窓４３と、保護窓４３の内側に内蔵されている上述した第３実施形態のＬＣＤユニット３０と、第２ケース４２に設けられている操作部４４と、第１ケース４１の上端部に設けた受話部４５とを備えている。そして、図５では省略しているが、第２ケース４２には、人が指で押して情報を入力するための操作キーが設けられている。 (Fourth embodiment: mobile phone: electronic device)
Next, FIG. 5 is a schematic perspective view showing a mobile phone according to a fourth embodiment of the present invention.
The cellular phone 40 according to the present embodiment includes a first case 41, a second case 42 hinged to the longitudinal end of the first case 41, a protective window 43 provided in the first case 41, and a protective window 43, the LCD unit 30 of the third embodiment described above, an operation unit 44 provided in the second case 42, and a receiver 45 provided at the upper end of the first case 41. ing. Although omitted in FIG. 5, the second case 42 is provided with operation keys for a person to input information by pressing with a finger.

保護窓４３は、プラスチック等の透明部材であり、第１ケース４１内に配設したＬＣＤユニット３０の表示面を透過して視認可能とするとともに、ＬＣＤユニット３０に外圧等が加わるのを防ぐ機能を有する。
ここで、本発明の電子機器が携帯電話機４０に対応している。
本実施形態の携帯電話機４０によると、この装置を構成するＬＣＤユニット３０が輝度、コントラスト比が良くなって、視認性が向上しているので、明るい表示が可能で、且つ操作性に優れた電子機器を提供することができる。 The protective window 43 is a transparent member such as plastic and has a function of making it visible through the display surface of the LCD unit 30 disposed in the first case 41 and preventing external pressure from being applied to the LCD unit 30. Have
Here, the electronic device of the present invention corresponds to the mobile phone 40.
According to the mobile phone 40 of the present embodiment, the LCD unit 30 constituting this device has improved brightness and contrast ratio and improved visibility, so that it is possible to display brightly and have excellent operability. Equipment can be provided.

なお、本発明の電子機器は、携帯電話機４０に限らず、種々の電子機器に搭載することができる。例えば、ＰＤＡ、電子ブック、パーソナルコンピュータ、ディジタルスチルカメラ、液晶テレビ、ビューファインダ型あるいはモニタ直視型のビデオテープレコーダ、カーナビゲーション装置、ページャ、電子手帳、電卓、ワードプロセッサ、ワークステーション、テレビ電話、ＰＯＳ端末、印刷装置等に適用することができる。   The electronic device of the present invention can be mounted not only on the mobile phone 40 but also on various electronic devices. For example, PDA, electronic book, personal computer, digital still camera, liquid crystal television, viewfinder type or monitor direct view type video tape recorder, car navigation device, pager, electronic notebook, calculator, word processor, workstation, video phone, POS terminal It can be applied to a printing apparatus or the like.

本発明に係る第１実施形態の電気光学装置の概略構成を示す平面図である。1 is a plan view illustrating a schematic configuration of an electro-optical device according to a first embodiment of the invention. 図１のＡ−Ａ線矢視図である。It is an AA arrow line view of FIG. 本発明に係る第２実施形態の電気光学装置の概略構成を示す平面図である。FIG. 6 is a plan view illustrating a schematic configuration of an electro-optical device according to a second embodiment of the invention. 第３実施形態のＬＣＤユニットを示す断面図である。It is sectional drawing which shows the LCD unit of 3rd Embodiment. 本発明に係る第４実施形態の電子機器の概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the electronic device of 4th Embodiment which concerns on this invention.

符号の説明Explanation of symbols

１…液晶表示装置、２…シール材、３…表示領域、４…透明基板、５…アレイ側電極、６…張出部、７…液晶駆動用ＩＣ、８…透明基板、９…樹脂製の額縁、１１…カラーフィルタ側電極、１２…樹脂製の額縁、１５…紫外線、３０…ＬＣＤユニット、３１…バックライト、３２…支持フレーム、３３…フレキシブル基板、３４…導光板、３５…反射板、３６…光源、３７ａ，３７ｂ…光学シート、３８…粘着層、４０…携帯電話機、４１…第１ケース、４２…第２ケース、４３…保護窓、４４…操作部、４５…受話部、ＡＲ…アレイ基板、ＣＦ…カラーフィルタ基板、ＬＣ…液晶   DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display device, 2 ... Sealing material, 3 ... Display area, 4 ... Transparent substrate, 5 ... Array side electrode, 6 ... Overhang | projection part, 7 ... Liquid crystal drive IC, 8 ... Transparent substrate, 9 ... Resin-made Frame, 11 ... Color filter side electrode, 12 ... Resin frame, 15 ... UV, 30 ... LCD unit, 31 ... Back light, 32 ... Support frame, 33 ... Flexible substrate, 34 ... Light guide plate, 35 ... Reflector plate, 36 ... Light source, 37a, 37b ... Optical sheet, 38 ... Adhesive layer, 40 ... Mobile phone, 41 ... First case, 42 ... Second case, 43 ... Protective window, 44 ... Operation unit, 45 ... Receiver, AR ... Array substrate, CF ... color filter substrate, LC ... liquid crystal

Claims (6)

第１基板と、前記第１基板に対向配置された第２基板と、前記第１基板および前記第２基板に形成され、表示領域を囲む環状のシール材と、を有する電気光学装置において、
前記シール材が紫外線硬化成分を含み、
前記表示領域には、複数の着色層を有し、
前記複数の着色層は、主として透過する光の波長が各々異なっており、
前記第１基板および前記第２基板のうち少なくとも一方の基板の前記シール材と重なる領域に、前記複数の着色層のうち、主として透過する光の波長が最も短い着色層よりも、短波長側の光を透過する着色層が形成されてなることを特徴とする電気光学装置。 An electro-optical device comprising: a first substrate; a second substrate disposed opposite to the first substrate; and an annular sealing material formed on the first substrate and the second substrate and surrounding a display region.
The sealing material contains an ultraviolet curing component;
The display area has a plurality of colored layers,
The plurality of colored layers mainly have different wavelengths of transmitted light,
The region of the first substrate and the second substrate that overlaps the sealing material of at least one of the plurality of colored layers is shorter than the colored layer having the shortest wavelength of light that is mainly transmitted. An electro-optical device comprising a colored layer that transmits light. 前記第１基板および前記第２基板のうち他方の基板の内面側には、前記シール材と重なる領域に遮光層が形成されてなることを特徴とする請求項１に記載の電気光学装置。   2. The electro-optical device according to claim 1, wherein a light shielding layer is formed in a region overlapping with the sealing material on an inner surface side of the other of the first substrate and the second substrate. 前記表示領域の前記複数の着色層および前記シール材と重なる領域の着色層が、前記第１基板に形成されてなることを特徴とする請求項１又は２に記載の電気光学装置。   3. The electro-optical device according to claim 1, wherein the plurality of colored layers in the display region and a colored layer in a region overlapping with the sealing material are formed on the first substrate. 第１基板と、前記第１基板に対向配置された第２基板と、前記第１基板および前記第２基板に形成され、表示領域を囲む環状のシール材と、を有する電気光学装置において、
前記シール材が紫外線硬化成分を含み、
前記第１基板および、前記第２基板のうち少なくとも一方の基板の前記シール材と重なる領域に、２３０ｎｍ〜３７０ｎｍの範囲の光を透過させる着色層が形成されてなることを特徴とする電気光学装置。 An electro-optical device comprising: a first substrate; a second substrate disposed opposite to the first substrate; and an annular sealing material formed on the first substrate and the second substrate and surrounding a display region.
The sealing material contains an ultraviolet curing component;
An electro-optical device, wherein a colored layer that transmits light in a range of 230 nm to 370 nm is formed in a region overlapping with the sealing material of at least one of the first substrate and the second substrate. . 第１基板および前記第１基板に対向配置された第２基板と、前記第１基板および前記第２基板に形成され、表示領域を囲む環状のシール材と、を有し、前記表示領域に、主として透過する光の波長が各々異なる複数の着色層が形成されてなる電気光学装置の製造方法において、
前記第１基板の前記シール材と重なる領域に、前記複数の着色層のうち、主として透過する光の波長が最も短い着色層よりも短波長側の光を透過する着色層を形成する工程と、
前記第１基板および前記第２基板のうち少なくとも一方の基板に紫外線硬化成分を含む前記シール材を塗布する工程と、
前記第１基板および前記第２基板を貼り合わせる工程と、
前記第１基板の側から、前記シール材に対して紫外線を照射する工程と、を含んでなることを特徴とする電気光学装置の製造方法。 A first substrate and a second substrate disposed opposite to the first substrate; and an annular sealing material that is formed on the first substrate and the second substrate and surrounds the display region. In the display region, In the method of manufacturing an electro-optical device, in which a plurality of colored layers having different wavelengths of mainly transmitted light are formed,
Forming a colored layer that transmits light on a shorter wavelength side than the colored layer that has the shortest wavelength of light transmitted among the plurality of colored layers in a region overlapping the sealing material of the first substrate;
Applying the sealing material containing an ultraviolet curable component to at least one of the first substrate and the second substrate;
Bonding the first substrate and the second substrate;
Irradiating the sealing material with ultraviolet light from the side of the first substrate. 請求項１乃至４の何れか１項に記載の電気光学装置を備えていることを特徴とする電子機器。   An electronic apparatus comprising the electro-optical device according to claim 1.
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