JP2008102557A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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JP2008102557A
JP2008102557A JP2008008466A JP2008008466A JP2008102557A JP 2008102557 A JP2008102557 A JP 2008102557A JP 2008008466 A JP2008008466 A JP 2008008466A JP 2008008466 A JP2008008466 A JP 2008008466A JP 2008102557 A JP2008102557 A JP 2008102557A
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liquid crystal
display device
crystal display
substrate
alignment film
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JP4669887B2 (en
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Kazutaka Hanaoka
一孝 花岡
Yohei Nakanishi
洋平 仲西
Yuichi Inoue
雄一 井ノ上
Masakazu Shibazaki
正和 柴崎
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Sharp Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which improves a numerical aperture simply and reliably without causing trouble such as display irregularity in liquid crystal and, thereby, materializes highly reliable liquid crystal display. <P>SOLUTION: A seal material 31 surrounding a vertical alignment film 16a and a black matrix 32 covering the periphery of a vertical alignment film 16b are respectively disposed on a TFT substrate 11 and a CF substrate 12, wherein the seal material 31 is disposed so as to be inward-shifted up to the vertical alignment film 16a and a non-display part as a region between the black matrix 32 and the seal material 31 is made extremely narrowed (some times, it happens that both parts are allowed to almost coincide with each other). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、液晶表示装置及びその製造方法に関し、特に、垂直配向型で且つ光重合により形成されたポリマーの配向規制力を利用して、液晶分子の配向を制御する方式の液晶表示装置を対象とする。   The present invention relates to a liquid crystal display device and a method of manufacturing the same, and more particularly to a liquid crystal display device of a type that controls the alignment of liquid crystal molecules by utilizing the alignment regulating force of a polymer that is a vertical alignment type and formed by photopolymerization. And

従来、アクティブマトリクスを用いた液晶ディスプレイ（ＬＣＤ）としては、正の誘電率異方性を持つ液晶材料を暗状態において基板面に水平に、且つ対向する基板間で９０度ツイストするように配向させたＴＮモードの液晶表示装置が広く用いられている。   Conventionally, as a liquid crystal display (LCD) using an active matrix, a liquid crystal material having a positive dielectric anisotropy is aligned horizontally in a dark state so as to be twisted by 90 degrees between opposing substrates. TN mode liquid crystal display devices are widely used.

このＴＮモードの液晶表示装置は、視角特性に劣るという問題を有しており、視角特性を改善すべく種々の検討が行われている。そこで、これに替わる方式として、負の誘電率異方性を持つ液晶材料を垂直配向させ、配向膜にラビング処理を施すことなく、基板表面に設けた突起やスリットにより電圧印加時の液晶分子の傾斜方向を複数方向に規制するＭＶＡ（Multi-domain Vertical Alignment）方式が開発されており、視角特性を大幅に改善することに成功している。   This TN mode liquid crystal display device has a problem that the viewing angle characteristic is inferior, and various studies have been made to improve the viewing angle characteristic. Therefore, as an alternative method, a liquid crystal material having negative dielectric anisotropy is vertically aligned, and the liquid crystal molecules at the time of voltage application are applied by protrusions and slits provided on the substrate surface without subjecting the alignment film to rubbing treatment. An MVA (Multi-domain Vertical Alignment) system that regulates the tilt direction in a plurality of directions has been developed, and has succeeded in greatly improving the viewing angle characteristics.

ＭＶＡ方式の液晶表示装置は、上述のように優れた視角特性を有する反面、配向規制用の突起等の構造物が設けられることから必然的に開口率を低下させ、明るさが劣るという問題がある。しかも、微細且つ精緻な前記構造物を形成すること自体、製造プロセスを複雑化し、製造コストを増加させるということも無視できない。   The MVA type liquid crystal display device has excellent viewing angle characteristics as described above, but has a problem that the aperture ratio is inevitably lowered and the brightness is inferior due to the provision of alignment regulating projections and the like. is there. In addition, it is not negligible to form a fine and precise structure itself, which complicates the manufacturing process and increases the manufacturing cost.

本発明は、前記課題に鑑みてなされたものであり、液晶に表示ムラ等の不都合を生ぜしめることなく簡易且つ確実に開口率を向上させ、信頼性の高い液晶表示を実現する液晶表示装置及びその製造方法を提供することを目的とする。   The present invention has been made in view of the above-described problems, and a liquid crystal display device that realizes a highly reliable liquid crystal display by improving the aperture ratio easily and reliably without causing inconvenience such as display unevenness in the liquid crystal, and It aims at providing the manufacturing method.

本発明者は、鋭意検討の結果、以下に示す発明の諸態様に想到した。   As a result of intensive studies, the present inventor has conceived the following aspects of the invention.

本発明の液晶表示装置は、第１の電極を有する第１の基板と、第２の電極を有する第２の基板とが、配向膜及び液晶層を介して接合されてなる液晶表示装置であって、前記配向膜と前記液晶層との間に、前記液晶層の液晶分子を所定方向に配向させるためのポリマー構造物が形成されており、前記液晶がパネル内に注入されるときに、前記液晶層の表示部位とその周縁部位とでその注入速度がほぼ等しく、前記周縁部位は、液晶注入部位と対向する部位が幅広に、その他の部位が幅狭に形成されている。   The liquid crystal display device of the present invention is a liquid crystal display device in which a first substrate having a first electrode and a second substrate having a second electrode are joined via an alignment film and a liquid crystal layer. A polymer structure for aligning liquid crystal molecules of the liquid crystal layer in a predetermined direction is formed between the alignment film and the liquid crystal layer, and when the liquid crystal is injected into a panel, The injection speed of the display part of the liquid crystal layer is substantially equal to that of the peripheral part, and the peripheral part is formed so that the part facing the liquid crystal injection part is wide and the other part is narrow.

本発明によれば、液晶に表示ムラ等の不都合を生ぜしめることなく簡易且つ確実に開口率を向上させ、信頼性の高い液晶表示を実現することが可能となる。   According to the present invention, it is possible to easily and reliably improve the aperture ratio without causing inconvenience such as display unevenness in the liquid crystal, and to realize a highly reliable liquid crystal display.

−本発明の基本骨子−
先ず、本発明の基本骨子について説明する。
本発明者らは、ＭＶＡ方式の液晶表示装置を改良し、開口率を向上させて明るさを増加し、コストの点でもレベルアップさせる手法として、光重合又は熱重合するモノマーを液晶に混入させ、重合させることによって安定な配向を得る配向規制技術を開発してきた。 -Basic outline of the present invention-
First, the basic outline of the present invention will be described.
The inventors of the present invention have improved the MVA liquid crystal display device to increase the aperture ratio, increase the brightness, and improve the level of cost by mixing a monomer that undergoes photopolymerization or thermal polymerization into the liquid crystal. An alignment regulation technology has been developed to obtain a stable alignment by polymerization.

しかしながら、前記配向規制技術では、以下に示すような液晶注入に関わる問題を有している。
即ち図１に示すように、能動素子として例えばＴＦＴが設けられる基板（ＴＦＴ基板）１０１には、これと対向して配置されるカラーフィルター（不図示）及びブラックマトリクス（ＢＭ）１０３が設けられる基板（ＣＦ基板）１０２と接合するためのシール材１０４に液晶注入口１０５が設けられており、この液晶注入口１０５の対向辺における両端部に、中間調表示において黒ムラ１１１が発生する。本発明者らが検討したところ、この黒ムラの発生には、注入される液晶が画像の表示部（ブラックマトリクス１０３内の領域；ここでは配向膜１０６の配設部位に一致する。）よりも、その周縁部位である非表示部（ブラックマトリクス１０３とシール材１０４との間の領域）の方が、液晶注入速度が速いことに起因していると判明した。 However, the alignment regulation technique has the following problems related to liquid crystal injection.
That is, as shown in FIG. 1, a substrate (TFT substrate) 101 provided with, for example, TFTs as active elements is provided with a color filter (not shown) and a black matrix (BM) 103 arranged opposite to the substrate. A liquid crystal injection port 105 is provided in the sealing material 104 for bonding to the (CF substrate) 102, and black unevenness 111 is generated in halftone display at both ends of the opposite side of the liquid crystal injection port 105. As a result of studies by the present inventors, for the occurrence of this black unevenness, the injected liquid crystal is closer to the image display area (the region in the black matrix 103; here, the region where the alignment film 106 is disposed). It was found that the non-display portion (the region between the black matrix 103 and the sealing material 104) that is the peripheral portion is caused by the higher liquid crystal injection speed.

更に詳細な検討の結果、非表示部の液晶注入速度は、非表示部の垂直配向でない部分、即ち配向膜外の領域（ここでは水平配向である。）が広い程、速くなることが判った。一般に垂直配向部位における液晶注入速度は遅く、水平配向では速い。そこで本発明者は、非表示部の配向を表示部の配向（ここでは垂直）とほぼ同等となるように制御することに想到した。具体的には、以下で詳細に説明するように、非表示部の面積を極力小さくなるようにシール材と配向膜とを近接させることや、非表示部に撥油性処理を行うことによって非表示部の液晶を疑似垂直配向化することが好適である。これにより、液晶注入速度を均一化し、中間調表示における黒ムラの発生を抑止することができる。   As a result of further detailed examination, it was found that the liquid crystal injection speed of the non-display portion increases as the portion of the non-display portion that is not vertically aligned, that is, the region outside the alignment film (here, horizontal alignment) increases. . In general, the liquid crystal injection rate at the vertical alignment site is slow, and the horizontal alignment is fast. Accordingly, the present inventor has conceived of controlling the orientation of the non-display portion so as to be substantially equal to the orientation of the display portion (here, vertical). Specifically, as described in detail below, the non-display area is hidden by bringing the sealing material and the alignment film close to each other so as to minimize the area of the non-display area, or by performing an oil repellency treatment on the non-display area. It is preferable to quasi-vertically align the liquid crystal in the part. Thereby, the liquid crystal injection speed can be made uniform and the occurrence of black unevenness in halftone display can be suppressed.

−具体的な諸実施形態−
上述した本発明の基本骨子を踏まえ、具体的な諸実施形態について説明する。ここでは、図２に示すような主要構成を有する液晶表示装置を対象とする。 -Specific embodiments-
Based on the basic outline of the present invention described above, specific embodiments will be described. Here, a liquid crystal display device having a main configuration as shown in FIG. 2 is targeted.

この液晶表示装置は、所定間隔をあけて対向する一対の透明ガラス基板１１，１２と、これら透明ガラス基板１１，１２間に狭持される液晶層１３とを備えて構成されている。透明ガラス基板１１，１２は、不図示のシール材により接合固定される。   The liquid crystal display device includes a pair of transparent glass substrates 11 and 12 facing each other with a predetermined interval, and a liquid crystal layer 13 sandwiched between the transparent glass substrates 11 and 12. The transparent glass substrates 11 and 12 are bonded and fixed by a sealing material (not shown).

一方の透明ガラス基板（ＴＦＴ基板）１１上には、絶縁層１４を介してＩＴＯからなる複数の画素電極１５、能動素子となる不図示の薄膜トランジスタ（ＴＦＴ：Thin Film Transistor）が形成され、画素電極１５を覆うように透明の垂直配向膜１６ａが形成されており、他方の透明ガラス基板（ＣＦ基板）１２上には、カラーフィルター１７（及び不図示のブラックマトリクス）、共通電極（対向電極）１８及び垂直配向膜１６ｂが順次積層されている。そして、液晶層１３を狭持するように垂直配向膜１６ａ，１６ｂが突き合わせられてガラス基板１１，１２がシール材により固定され、各基板１１，１２の外側に偏光子１９，２０が設けられる。画素電極１５はアクティブマトリクス（ＴＦＴマトリクス）と共に形成され、図示の例ではＴＦＴのドレイン電極が接続されているデータバスライン２１が示されている。また、図示されていないが、ＴＦＴのゲート電極が接続されるゲートバスラインも形成されている。なお、電極は一方の基板のみに設けられることもある。   On one transparent glass substrate (TFT substrate) 11, a plurality of pixel electrodes 15 made of ITO and thin film transistors (TFT: not shown) serving as active elements are formed via an insulating layer 14. A transparent vertical alignment film 16 a is formed so as to cover 15, and a color filter 17 (and a black matrix not shown) and a common electrode (counter electrode) 18 are formed on the other transparent glass substrate (CF substrate) 12. The vertical alignment film 16b is sequentially stacked. Then, the vertical alignment films 16 a and 16 b are abutted so as to sandwich the liquid crystal layer 13, the glass substrates 11 and 12 are fixed by a sealing material, and polarizers 19 and 20 are provided outside the substrates 11 and 12. The pixel electrode 15 is formed together with an active matrix (TFT matrix), and in the illustrated example, the data bus line 21 to which the drain electrode of the TFT is connected is shown. Although not shown, gate bus lines to which the gate electrodes of the TFTs are connected are also formed. Note that the electrode may be provided only on one substrate.

液晶層１３は、シール材に設けられた液晶注入口から液晶が注入されることにより形成される。本実施形態では、前記液晶は、光重合又は熱重合するモノマーが混入してなるものである。更に、画素電極１５には、例えば図３に示すように、配向パターンを形成する微細なスリット１５ａが形成されている。そして、図４に示すように、注入された液晶に所定の交流電圧を印加しながらＵＶ照射又は熱処理を施すことにより、前記モノマーを重合させてスリット１５ａの配向パターンに規制されたポリマー構造物１３ａが液晶層１３の表層（垂直配向膜１６ａ，１６ｂの表面）に形成され、当該ポリマー構造物に規制されて液晶分子が前記配向パターンに倣って配向する。   The liquid crystal layer 13 is formed by injecting liquid crystal from a liquid crystal injection port provided in the sealing material. In the present embodiment, the liquid crystal is a mixture of monomers that are photopolymerized or thermally polymerized. Further, the pixel electrode 15 is formed with fine slits 15a for forming an alignment pattern, for example, as shown in FIG. Then, as shown in FIG. 4, by applying UV irradiation or heat treatment while applying a predetermined alternating voltage to the injected liquid crystal, the monomer is polymerized and the polymer structure 13a regulated by the alignment pattern of the slit 15a. Is formed on the surface layer of the liquid crystal layer 13 (the surfaces of the vertical alignment films 16a and 16b), and the liquid crystal molecules are aligned according to the alignment pattern by being restricted by the polymer structure.

（第１の実施形態）
図５は、第１の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図であり、（ａ）が平面図、（ｂ）が短辺に沿った断面図である。
この液晶表示装置では、ＴＦＴ基板１１に垂直配向膜１６ａを囲むシール材３１が、ＣＦ基板１２に垂直配向膜１６ｂの周縁を覆うブラックマトリクス３２がそれぞれ設けられており、シール材３１が垂直配向膜１６ａまで内寄せ配置され、ブラックマトリクス３２とシール材３１との間の領域である非表示部が極めて狭く（殆ど一致させる場合もある）されている。この非表示部の幅は例えば０．５ｍｍ以下とすることが好ましい。 (First embodiment)
FIGS. 5A and 5B are schematic views showing a state when the liquid crystal display device according to the first embodiment is formed, in which FIG. 5A is a plan view and FIG. 5B is a cross-sectional view along the short side.
In this liquid crystal display device, the TFT substrate 11 is provided with a sealing material 31 surrounding the vertical alignment film 16a, and the CF substrate 12 is provided with a black matrix 32 covering the periphery of the vertical alignment film 16b. The non-display portion that is an area between the black matrix 32 and the sealing material 31 is extremely narrow (may be almost coincident). The width of the non-display portion is preferably set to 0.5 mm or less, for example.

この状態で、シール材３１の一辺に設けられた液晶注入口３１ａから前記液晶を注入する。このとき、非表示部が殆ど存在せず、シール材３１の内側領域を垂直配向膜１６ａ，１６ｂが覆っているため、全面に亘って液晶分子はこれらに規制されて垂直配向の状態で液晶注入が行われてゆく。従ってこの場合、上述したような液晶注入速度の相違は生ぜず、均一な注入速度で液晶層１３が形成され、液晶注入速度の相違に起因する黒ムラの発生が抑止される。   In this state, the liquid crystal is injected from a liquid crystal injection port 31 a provided on one side of the sealing material 31. At this time, there is almost no non-display portion, and the vertical alignment films 16a and 16b cover the inner region of the sealing material 31, so that the liquid crystal molecules are regulated by these over the entire surface and liquid crystal is injected in a vertically aligned state. Will be done. Therefore, in this case, the difference in the liquid crystal injection speed as described above does not occur, and the liquid crystal layer 13 is formed at a uniform injection speed, and the occurrence of black unevenness due to the difference in the liquid crystal injection speed is suppressed.

以上説明したように、本実施形態の液晶表示装置によれば、液晶に表示ムラ等の不都合を生ぜしめることなく簡易且つ確実に開口率を向上させ、信頼性の高い液晶表示を実現することができる。   As described above, according to the liquid crystal display device of the present embodiment, it is possible to improve the aperture ratio easily and reliably without causing inconvenience such as display unevenness in the liquid crystal, and to realize a highly reliable liquid crystal display. it can.

（第２の実施形態）
図６は、第２の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図であり、（ａ）が平面図、（ｂ）が短辺に沿った断面図である。
この液晶表示装置では、ＴＦＴ基板１１に垂直配向膜１６ａを囲むシール材３１が、ＣＦ基板１２に垂直配向膜１６ｂの周縁を覆うブラックマトリクス３２がそれぞれ設けられており、垂直配向膜１６ａ，１６ｂがブラックマトリクス３２を超えてシール材３１まで拡大配置されている。この場合、垂直配向膜１６ａ，１６ｂとシール材３１との間の領域が極めて狭く（殆ど一致させる場合もある）されている。この領域の幅は例えば０．５ｍｍ以下とすることが好ましい。 (Second Embodiment)
6A and 6B are schematic views showing a state of forming a liquid crystal layer of the liquid crystal display device according to the second embodiment, wherein FIG. 6A is a plan view and FIG. 6B is a cross-sectional view along the short side.
In this liquid crystal display device, a sealing material 31 surrounding the vertical alignment film 16a is provided on the TFT substrate 11, and a black matrix 32 covering the periphery of the vertical alignment film 16b is provided on the CF substrate 12, and the vertical alignment films 16a and 16b are provided. The seal material 31 extends beyond the black matrix 32. In this case, the region between the vertical alignment films 16a and 16b and the sealing material 31 is extremely narrow (may be almost coincident). The width of this region is preferably 0.5 mm or less, for example.

この状態で、シール材３１の一辺に設けられた液晶注入口３１ａから前記液晶を注入する。このとき、非表示部が殆ど存在せず、シール材３１の内側領域を垂直配向膜１６ａ，１６ｂが覆っているため、全面に亘って液晶分子はこれらに規制されて垂直配向の状態で液晶注入が行われてゆく。従ってこの場合、上述したような液晶注入速度の相違は生ぜず、均一な注入速度で液晶層１３が形成され、液晶注入速度の相違に起因する黒ムラの発生が抑止される。   In this state, the liquid crystal is injected from a liquid crystal injection port 31 a provided on one side of the sealing material 31. At this time, there is almost no non-display portion, and the vertical alignment films 16a and 16b cover the inner region of the sealing material 31, so that the liquid crystal molecules are regulated by these over the entire surface and liquid crystal is injected in a vertically aligned state. Will be done. Therefore, in this case, the difference in the liquid crystal injection speed as described above does not occur, and the liquid crystal layer 13 is formed at a uniform injection speed, and the occurrence of black unevenness due to the difference in the liquid crystal injection speed is suppressed.

以上説明したように、本実施形態の液晶表示装置によれば、液晶に表示ムラ等の不都合を生ぜしめることなく簡易且つ確実に開口率を向上させ、信頼性の高い液晶表示を実現することができる。   As described above, according to the liquid crystal display device of the present embodiment, it is possible to improve the aperture ratio easily and reliably without causing inconvenience such as display unevenness in the liquid crystal, and to realize a highly reliable liquid crystal display. it can.

（第３の実施形態）
図７は、第３の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図であり、（ａ）が平面図、（ｂ）が短辺に沿った断面図である。
この液晶表示装置では、ＴＦＴ基板１１に垂直配向膜１６ａを囲むシール材３１が、ＣＦ基板１２に垂直配向膜１６ｂの周縁を覆うブラックマトリクス３２がそれぞれ設けられており、ブラックマトリクス３２とシール材３１との間の領域である非表示部に撥油性樹脂であるフッ素材４１が塗布形成されている。 (Third embodiment)
7A and 7B are schematic views showing a state of forming a liquid crystal layer of the liquid crystal display device according to the third embodiment, wherein FIG. 7A is a plan view and FIG. 7B is a cross-sectional view along the short side.
In this liquid crystal display device, a sealing material 31 surrounding the vertical alignment film 16a is provided on the TFT substrate 11, and a black matrix 32 covering the periphery of the vertical alignment film 16b is provided on the CF substrate 12, and the black matrix 32 and the sealing material 31 are provided. A fluorine material 41 that is an oil repellent resin is applied and formed on a non-display portion that is a region between the two.

この状態で、シール材３１の一辺に設けられた液晶注入口３１ａから前記液晶を注入する。このとき、非表示部ではフッ素材４１により液晶が弾かれて液晶分子が疑似垂直配向化し、実質的にはほぼ全面に亘って液晶分子が垂直配向した状態で液晶注入が行われてゆく。従ってこの場合、上述したような液晶注入速度の相違は生ぜず、均一な注入速度で液晶層１３が形成され、液晶注入速度の相違に起因する黒ムラの発生が抑止される。   In this state, the liquid crystal is injected from a liquid crystal injection port 31 a provided on one side of the sealing material 31. At this time, in the non-display portion, the liquid crystal is repelled by the fluorine material 41 and the liquid crystal molecules are pseudo-vertically aligned, and the liquid crystal is injected in a state where the liquid crystal molecules are substantially vertically aligned over substantially the entire surface. Therefore, in this case, the difference in the liquid crystal injection speed as described above does not occur, and the liquid crystal layer 13 is formed at a uniform injection speed, and the occurrence of black unevenness due to the difference in the liquid crystal injection speed is suppressed.

以上説明したように、本実施形態の液晶表示装置によれば、液晶に表示ムラ等の不都合を生ぜしめることなく簡易且つ確実に開口率を向上させ、信頼性の高い液晶表示を実現することができる。   As described above, according to the liquid crystal display device of the present embodiment, it is possible to improve the aperture ratio easily and reliably without causing inconvenience such as display unevenness in the liquid crystal, and to realize a highly reliable liquid crystal display. it can.

（第４の実施形態）
図８は、第４の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図であり、（ａ）が平面図、（ｂ）が短辺に沿った断面図、（ｃ）が長辺に沿った断面図である。
この液晶表示装置では、この液晶表示装置では、ＴＦＴ基板１１に垂直配向膜１６ａを囲むシール材３１が、ＣＦ基板１２に垂直配向膜１６ｂの周縁を覆うブラックマトリクス３２がそれぞれ設けられている。 (Fourth embodiment)
FIGS. 8A and 8B are schematic views showing a state of forming a liquid crystal layer of the liquid crystal display device according to the fourth embodiment. FIG. 8A is a plan view, FIG. 8B is a cross-sectional view along the short side, and FIG. It is sectional drawing along a long side.
In this liquid crystal display device, the TFT substrate 11 is provided with a sealing material 31 surrounding the vertical alignment film 16a, and the CF substrate 12 is provided with a black matrix 32 covering the periphery of the vertical alignment film 16b.

そして、図中短辺部位、即ち液晶注入口３１ａと平行な部位のうち、液晶注入口３１ａと対向する部位では、非表示部が図１と比しても幅広に形成（幅広領域４２）されている。更に、非表示部のその部位、即ち図中長辺部位（液晶注入口３１ａと直交する部位）及び液晶注入口３１ａの短辺部位では、シール材３１が垂直配向膜１６ａまで内寄せ配置され、ブラックマトリクス３２とシール材３１との間の領域である非表示部が極めて狭く（殆ど一致させる場合もある）されている。この非表示部の幅は例えば０．５ｍｍ以下とすることが好ましい。   In the short side portion in the drawing, that is, in the portion parallel to the liquid crystal injection port 31a, the non-display portion is formed wider (wide region 42) than in FIG. 1 at the portion facing the liquid crystal injection port 31a. ing. Further, at the portion of the non-display portion, that is, the long side portion in the drawing (the portion orthogonal to the liquid crystal injection port 31a) and the short side portion of the liquid crystal injection port 31a, the sealing material 31 is disposed inward to the vertical alignment film 16a. A non-display portion that is a region between the black matrix 32 and the sealing material 31 is extremely narrow (may be almost coincident). The width of the non-display portion is preferably set to 0.5 mm or less, for example.

この状態で、シール材３１の一辺に設けられた液晶注入口３１ａから前記液晶を注入する。このとき、液晶注入口３１ａから最も離間した幅広領域４２にモノマーの薄い液晶が閉じ込められ、局所的に滞留領域が形成される。一方、非表示部のその他の部位では非表示部が殆ど存在せず、シール材３１の内側領域を垂直配向膜１６ａ，１６ｂが覆っているため、全面に亘って液晶分子はこれらに規制されて垂直配向の状態で液晶注入が行われてゆく。従ってこの場合、幅広領域４２の液晶が悪影響を及ぼすことなく、上述したような液晶注入速度の相違は生ぜず、均一な注入速度で液晶層１３が形成され、液晶注入速度の相違に起因する黒ムラの発生が抑止される。   In this state, the liquid crystal is injected from a liquid crystal injection port 31 a provided on one side of the sealing material 31. At this time, a thin liquid crystal of monomer is confined in the wide region 42 farthest from the liquid crystal injection port 31a, and a staying region is locally formed. On the other hand, there are almost no non-display portions in other portions of the non-display portion, and the vertical alignment films 16a and 16b cover the inner region of the sealing material 31, so that the liquid crystal molecules are regulated by these over the entire surface. Liquid crystal injection is performed in the state of vertical alignment. Therefore, in this case, the liquid crystal in the wide region 42 does not adversely affect the liquid crystal injection speed as described above, the liquid crystal layer 13 is formed at a uniform injection speed, and the black due to the difference in liquid crystal injection speed. Generation of unevenness is suppressed.

以上説明したように、本実施形態の液晶表示装置によれば、液晶に表示ムラ等の不都合を生ぜしめることなく簡易且つ確実に開口率を向上させ、信頼性の高い液晶表示を実現することができる。   As described above, according to the liquid crystal display device of the present embodiment, it is possible to improve the aperture ratio easily and reliably without causing inconvenience such as display unevenness in the liquid crystal, and to realize a highly reliable liquid crystal display. it can.

以下、本発明の諸態様を付記としてまとめて記載する。   Hereinafter, various aspects of the present invention will be collectively described as supplementary notes.

（付記１）第１の電極を有する第１の基板と、第２の電極を有する第２の基板とが、配向膜及び液晶層を介して接合されてなる液晶表示装置であって、
前記液晶層は、液晶中に当該液晶分子を所定方向に配向させるためのポリマー構造物が形成されており、
前記液晶分子が前記液晶層の表示部位とその周縁部位とで略同等のプレチルト角を有することを特徴とする液晶表示装置。 (Supplementary note 1) A liquid crystal display device in which a first substrate having a first electrode and a second substrate having a second electrode are bonded via an alignment film and a liquid crystal layer,
The liquid crystal layer is formed with a polymer structure for aligning the liquid crystal molecules in a predetermined direction in the liquid crystal,
The liquid crystal display device, wherein the liquid crystal molecules have substantially the same pretilt angle at a display portion of the liquid crystal layer and a peripheral portion thereof.

（付記２）前記周縁部位は、前記基板上の前記配向膜と、前記第１の基板と前記第２の基板とを接合するシール材との間の領域として画定されており、
前記シール材が前記配向膜まで内寄せ配置されていることを特徴とする付記１に記載の液晶表示装置。 (Supplementary Note 2) The peripheral portion is defined as a region between the alignment film on the substrate and a sealing material that joins the first substrate and the second substrate,
2. The liquid crystal display device according to appendix 1, wherein the sealing material is disposed inward to the alignment film.

（付記３）前記周縁部位は、前記基板上の前記配向膜と、前記第１の基板と前記第２の基板とを接合するシール材との間の領域として画定されており、
前記配向膜が前記シール材まで拡大配置されていることを特徴とする付記１に記載の液晶表示装置。 (Supplementary Note 3) The peripheral portion is defined as a region between the alignment film on the substrate and a sealing material that joins the first substrate and the second substrate,
2. The liquid crystal display device according to appendix 1, wherein the alignment film is extended to the sealing material.

（付記４）前記周縁部位の一部に撥油性樹脂が塗布されていることを特徴とする付記１に記載の液晶表示装置。   (Supplementary note 4) The liquid crystal display device according to supplementary note 1, wherein an oil-repellent resin is applied to a part of the peripheral portion.

（付記５）前記周縁部位は、液晶注入部位と対向する部位が幅広に、その他の部位が幅狭に形成されていることを特徴とする付記１に記載の液晶表示装置。   (Supplementary note 5) The liquid crystal display device according to supplementary note 1, wherein the peripheral portion is formed such that a portion facing the liquid crystal injection portion is wide and the other portions are narrow.

（付記６）第１の電極を有する第１の基板と、第２の電極を有する第２の基板とが、配向膜及び液晶層を介してシール材により接合されてなる液晶表示装置の製造方法であって、
前記配向膜と前記シール材とをほぼ接触するように配置し、
前記液晶層を形成するに際して、
液晶分子を所定方向に配向させるためのモノマーを混入した液晶を用い、液晶分子が前記液晶層のほぼ全面に亘って同一の配向となるように前記液晶を注入した後、
前記モノマーを重合させて所定の配向パターンのポリマー構造物を形成し、前記液晶分子を前記ポリマー構造物により配向規制することを特徴とする液晶表示装置の製造方法。 (Appendix 6) A method for manufacturing a liquid crystal display device, in which a first substrate having a first electrode and a second substrate having a second electrode are bonded together with a sealing material via an alignment film and a liquid crystal layer Because
Arranging the alignment film and the sealant so as to be substantially in contact,
In forming the liquid crystal layer,
After using the liquid crystal mixed with the monomer for aligning the liquid crystal molecules in a predetermined direction, after injecting the liquid crystal so that the liquid crystal molecules have the same alignment over almost the entire surface of the liquid crystal layer,
A method for producing a liquid crystal display device, wherein the monomer is polymerized to form a polymer structure having a predetermined alignment pattern, and the alignment of the liquid crystal molecules is regulated by the polymer structure.

（付記７）前記シール材を前記配向膜まで内寄せ配置することを特徴とする付記６に記載の液晶表示装置の製造方法。   (Additional remark 7) The manufacturing method of the liquid crystal display device of Additional remark 6 characterized by arrange | positioning the said sealing material in alignment with the said alignment film.

（付記８）前記配向膜を前記シール材まで拡大配置することを特徴とする付記６に記載の液晶表示装置の製造方法。   (Additional remark 8) The manufacturing method of the liquid crystal display device of Additional remark 6 characterized by expanding and arrange | positioning the said alignment film to the said sealing material.

（付記９）第１の電極を有する第１の基板と、第２の電極を有する第２の基板とが、配向膜及び液晶層を介してシール材により接合されてなる液晶表示装置の製造方法であって、
前記配向膜と、前記第１の基板と前記第２の基板とを接合するシール材との間の領域の一部に撥油性樹脂を塗布し、
前記液晶層を形成するに際して、
液晶分子を所定方向に配向させるためのモノマーを混入した液晶を注入した後、
前記モノマーを重合させて所定の配向パターンのポリマー構造物を形成し、前記液晶分子を前記ポリマー構造物により配向規制することを特徴とする液晶表示装置の製造方法。 (Supplementary Note 9) A method for manufacturing a liquid crystal display device, in which a first substrate having a first electrode and a second substrate having a second electrode are joined by a sealing material via an alignment film and a liquid crystal layer Because
Applying an oil-repellent resin to a part of the region between the alignment film and the sealing material that joins the first substrate and the second substrate;
In forming the liquid crystal layer,
After injecting a liquid crystal mixed with a monomer for aligning liquid crystal molecules in a predetermined direction,
A method for producing a liquid crystal display device, wherein the monomer is polymerized to form a polymer structure having a predetermined alignment pattern, and the alignment of the liquid crystal molecules is regulated by the polymer structure.

（付記１０）第１の電極を有する第１の基板と、第２の電極を有する第２の基板とが、配向膜及び液晶層を介してシール材により接合されてなる液晶表示装置の製造方法であって、
前記配向膜と、前記第１の基板と前記第２の基板とを接合するシール材との間の領域において、液晶注入部位と対向する部位を幅広に、その他の部位を幅狭に形成し、
液晶分子を所定方向に配向させるためのモノマーを混入した液晶を用い、液晶分子が前記幅広の領域を除き前記液晶層全面に亘って同一の配向となるように前記液晶を注入した後、
前記モノマーを重合させて所定の配向パターンのポリマー構造物を形成し、前記液晶分子を前記ポリマー構造物により配向規制することを特徴とする液晶表示装置の製造方法。 (Additional remark 10) The manufacturing method of the liquid crystal display device by which the 1st board | substrate which has a 1st electrode, and the 2nd board | substrate which has a 2nd electrode are joined by the sealing material through the alignment film and the liquid crystal layer. Because
In the region between the alignment film and the sealing material that joins the first substrate and the second substrate, a portion facing the liquid crystal injection portion is formed wide and the other portions are formed narrow,
After using the liquid crystal mixed with a monomer for aligning the liquid crystal molecules in a predetermined direction, after injecting the liquid crystal so that the liquid crystal molecules have the same alignment over the entire liquid crystal layer except the wide region,
A method for producing a liquid crystal display device, wherein the monomer is polymerized to form a polymer structure having a predetermined alignment pattern, and the alignment of the liquid crystal molecules is regulated by the polymer structure.

（付記１１）前記配向膜が垂直配向処理されてなるものであることを特徴とする付記６〜１０のいずれか１項に記載の液晶表示装置の製造方法。   (Appendix 11) The method for manufacturing a liquid crystal display device according to any one of appendices 6 to 10, wherein the alignment film is subjected to a vertical alignment treatment.

比較例の液晶表示装置の液晶層形成時の様子を示す模式図である。It is a schematic diagram which shows the mode at the time of liquid crystal layer formation of the liquid crystal display device of a comparative example. 本実施形態の液晶表示装置の主要構成を示す断面図である。It is sectional drawing which shows the main structures of the liquid crystal display device of this embodiment. 配向パターンを形成する微細なスリットが形成された画素電極の一部を示す平面図である。It is a top view which shows a part of pixel electrode in which the fine slit which forms an alignment pattern was formed. 液晶層形成時の様子を示す断面図である。It is sectional drawing which shows the mode at the time of liquid crystal layer formation. 第１の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図である。It is a schematic diagram which shows the mode at the time of liquid crystal layer formation of the liquid crystal display device by 1st Embodiment. 第２の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図である。It is a schematic diagram which shows the mode at the time of liquid crystal layer formation of the liquid crystal display device by 2nd Embodiment. 第３の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図である。It is a schematic diagram which shows the mode at the time of liquid crystal layer formation of the liquid crystal display device by 3rd Embodiment. 第４の実施形態による液晶表示装置の液晶層形成時の様子を示す模式図である。It is a schematic diagram which shows the mode at the time of liquid crystal layer formation of the liquid crystal display device by 4th Embodiment.

符号の説明Explanation of symbols

１１，１２ 透明ガラス基板
１３ 液晶層
１３ａ ポリマー構造物
１４ 絶縁層
１５ 画素電極
１５ａ 微細なスリット
１６ａ，１６ｂ 配向膜
１７ カラーフィルター
１８ 共通電極
１９，２０ 偏光子
２１ データバスライン
３１ シール材
３２ ブラックマトリクス
４１ フッ素材
４２ 幅広領域 DESCRIPTION OF SYMBOLS 11, 12 Transparent glass substrate 13 Liquid crystal layer 13a Polymer structure 14 Insulating layer 15 Pixel electrode 15a Fine slit 16a, 16b Orientation film 17 Color filter 18 Common electrode 19, 20 Polarizer 21 Data bus line 31 Sealing material 32 Black matrix 41 Fluorine material 42 Wide area

Claims (1)

第１の電極を有する第１の基板と、第２の電極を有する第２の基板とが、配向膜及び液晶層を介して接合されてなる液晶表示装置であって、
前記配向膜と前記液晶層との間に、前記液晶層の液晶分子を所定方向に配向させるためのポリマー構造物が形成されており、前記液晶がパネル内に注入されるときに、前記液晶層の表示部位とその周縁部位とでその注入速度がほぼ等しく、
前記周縁部位は、液晶注入部位と対向する部位が幅広に、その他の部位が幅狭に形成されていることを特徴とする液晶表示装置。 A liquid crystal display device in which a first substrate having a first electrode and a second substrate having a second electrode are bonded via an alignment film and a liquid crystal layer,
A polymer structure for aligning liquid crystal molecules of the liquid crystal layer in a predetermined direction is formed between the alignment film and the liquid crystal layer, and when the liquid crystal is injected into the panel, the liquid crystal layer The injection speed is almost equal between the display area and the peripheral area,
The liquid crystal display device according to claim 1, wherein the peripheral portion is formed such that a portion facing the liquid crystal injection portion is wide and the other portions are narrow.
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