JP2000056311A - Liquid crystal display - Google Patents
Liquid crystal displayInfo
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- JP2000056311A JP2000056311A JP10218994A JP21899498A JP2000056311A JP 2000056311 A JP2000056311 A JP 2000056311A JP 10218994 A JP10218994 A JP 10218994A JP 21899498 A JP21899498 A JP 21899498A JP 2000056311 A JP2000056311 A JP 2000056311A
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- Prior art keywords
- liquid crystal
- display device
- crystal display
- substrates
- projection
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Abstract
(57)【要約】
【課題】 液晶表示装置において、液晶層のギャップ均
一化のため基板上に突起を形成する場合に、高温放置時
に生じるギャップむらを抑止し、表示むらを低減するこ
と。
【解決手段】 ガラス基板１に対して１画素毎にカラー
フィルタ層２と遮光層３とを形成し、その上にトップコ
ート層４と透明表示電極５とを全面に形成する。次に遮
光層３の形成位置に突起６を樹脂で形成する。そして突
起長よりやや大きな球状のスペーサ１４を、一定の間隔
を設けて突起６の間に配置する。次に液晶を充填し、シ
ール材１２で上下の基板を押圧力を加えた状態で封止す
る。こうしてスペーサ１４が弾性変形する状態にする。
液晶表示装置が高温状態に保持されても、上下の基板の
ギャップは増加するが、ギャップむらは生じない。
(57) [Summary] In a liquid crystal display device, when a projection is formed on a substrate for uniforming a gap of a liquid crystal layer, gap unevenness that occurs when left at high temperature is suppressed, and display unevenness is reduced. SOLUTION: A color filter layer 2 and a light shielding layer 3 are formed for each pixel on a glass substrate 1, and a top coat layer 4 and a transparent display electrode 5 are formed on the entire surface thereof. Next, a protrusion 6 is formed of a resin at a position where the light shielding layer 3 is formed. Then, spherical spacers 14 slightly larger than the projection length are arranged between the projections 6 with a certain interval. Next, liquid crystal is filled, and the upper and lower substrates are sealed with a sealing material 12 while applying a pressing force. Thus, the spacer 14 is brought into a state of being elastically deformed.
Even if the liquid crystal display device is maintained at a high temperature, the gap between the upper and lower substrates increases, but no gap unevenness occurs.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、映像表示機器、パ
ーソナルコンピュータやワードプロセッサなどのＯＡ機
器、産業分野のハンディ端末機器、携帯型情報通信機器
などに用いられる液晶表示装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device used for a video display device, an OA device such as a personal computer or a word processor, a handy terminal device in the industrial field, and a portable information communication device.
【０００２】[0002]
【従来の技術】液晶表示素子はＣＲＴに比べて、画面サ
イズ、画素数において劣っている部分もあるが、重量や
体積において有利であり、携帯性を必要とする製品分野
によく利用されている。ノート型のパーソナルコンピュ
ータやワードプロセッサで用いられている液晶表示装置
として、現在１０〜１２インチサイズ程度では、６４０
×４８０ドット、又は６００×８００ドットの画素数が
確保されている。これはＣＲＴの画素数には劣るが、デ
ィスプレイとして優れた表示を行うことができる。2. Description of the Related Art Liquid crystal display elements are inferior in screen size and number of pixels as compared with CRTs, but are advantageous in weight and volume and are often used in product fields that require portability. . As a liquid crystal display device used in a notebook-type personal computer or a word processor, a size of about 640 is currently used for a size of about 10 to 12 inches.
The number of pixels of × 480 dots or 600 × 800 dots is secured. Although this is inferior to the number of pixels of the CRT, it can provide excellent display as a display.
【０００３】しかし、ＳＴＮ（スーパーツイステッドネ
マチック）に代表される単純マトリクスを用いた液晶表
示装置では、大画面や高精細化に伴ない、表示の均一化
が要求されている。この表示の均一性は、液晶分子の並
び方の指標となる配向の均一性と、液晶を挟持する基板
間のギャップの均一性とにより決定される。特に、大画
面や高精細な液晶表示装置では、表示面内で均一なギャ
ップを実現するのが製造上難しい。前記したギャップ均
一性の制御法として、スペーサを用い、基板間のギャッ
プを所定値に制御する方法が現在主流となっている。し
かし近年、特開平９−１２００７５号公報のように、ス
ペーサを用いず基板の片面に突起を形成し、ギャップの
制御を行うという方法が提案されている。However, in a liquid crystal display device using a simple matrix typified by STN (super twisted nematic), uniform display is required with a large screen and high definition. The uniformity of the display is determined by the uniformity of the alignment, which is an index of the arrangement of the liquid crystal molecules, and the uniformity of the gap between the substrates sandwiching the liquid crystal. In particular, with a large-screen or high-definition liquid crystal display device, it is difficult in manufacturing to realize a uniform gap in the display surface. As a method of controlling the gap uniformity, a method of controlling a gap between substrates to a predetermined value using a spacer is currently the mainstream. However, in recent years, a method has been proposed in which a gap is controlled by forming a projection on one surface of a substrate without using a spacer, as disclosed in Japanese Patent Application Laid-Open No. Hei 9-120075.
【０００４】突起を用いる従来の液晶表示装置について
図５、図６を用いて説明をする。図５は従来例の液晶表
示装置の構造を示す断面図であり、図６は従来の液晶表
示装置を高温放置したときの状態を示す断面図である。
図５において、ガラス基板１の上に赤、緑、青の３色か
らなるカラーフィルタ層２を形成し、各色の間に遮光層
３を格子状に形成する。そして透明な樹脂からなるトッ
プコート層４を形成し、さらにＩＴＯ膜からなる透明表
示電極５を設け、第１の基板を作成する。この透明表示
電極５の上部には、遮光層３の形成位置と同一位置に、
樹脂からなる突起６を形成する。そして突起６の間の透
明表示電極５の上面には、ポリイミドなどからなる配向
膜８を順に形成する。一方、相対向する基板９には、透
明表示電極１０を形成して第２の基板を作成する。そし
て配向膜１１を積層する。次に第１及び第２の基板の周
辺をシール材１２で封止し、突起６により一定のギャッ
プを確保する。そのギャップに液晶を充填し、液晶層１
３を形成する構造にしている。A conventional liquid crystal display device using projections will be described with reference to FIGS. FIG. 5 is a sectional view showing a structure of a conventional liquid crystal display device, and FIG. 6 is a sectional view showing a state when the conventional liquid crystal display device is left at high temperature.
In FIG. 5, a color filter layer 2 of three colors of red, green and blue is formed on a glass substrate 1, and a light-shielding layer 3 is formed in a lattice between the colors. Then, a top coat layer 4 made of a transparent resin is formed, and a transparent display electrode 5 made of an ITO film is further provided to form a first substrate. On the transparent display electrode 5, at the same position as the formation position of the light shielding layer 3,
A protrusion 6 made of resin is formed. Then, on the upper surface of the transparent display electrode 5 between the protrusions 6, an alignment film 8 made of polyimide or the like is sequentially formed. On the other hand, a transparent display electrode 10 is formed on the opposing substrates 9 to form a second substrate. Then, the alignment film 11 is stacked. Next, the periphery of the first and second substrates is sealed with a sealant 12, and a certain gap is secured by the protrusion 6. The gap is filled with liquid crystal, and the liquid crystal layer 1
3 is formed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、ギャッ
プ制御用として突起６を用いて液晶表示装置を作成した
場合、液晶表示装置が高温下で保存又は使用されると、
図６に示すように、温度上昇により液晶層１３が膨張す
る。このため、室温にくらべて基板間のギャップが大き
くなる。このとき、基板上に形成されている突起６は、
加熱によりほとんど変化しないので、基板間を保持する
部材がない状態が生じる。この結果、基板間のギャップ
に部分的な差を生じてしまう。このとき液晶表示装置の
表示状態として、ギャップむらに起因する表示むらが画
面内で観測される。However, when a liquid crystal display device is produced using the projections 6 for gap control, when the liquid crystal display device is stored or used at a high temperature,
As shown in FIG. 6, the temperature rise causes the liquid crystal layer 13 to expand. Therefore, the gap between the substrates is larger than at room temperature. At this time, the protrusion 6 formed on the substrate is
Since there is almost no change due to the heating, there occurs a state in which there is no member holding the substrates. As a result, a partial difference occurs in the gap between the substrates. At this time, as the display state of the liquid crystal display device, display unevenness due to gap unevenness is observed in the screen.
【０００６】市場で求められている液晶表示装置の大面
積化、高細精化、高速化を実現するために、新たにディ
スプレイの機能を更に向上させようとすると、従来のパ
ネル構成では温度変化時、特に高温時に表示むらが発生
し、よい表示品位を得ることが困難になることが予想さ
れる。[0006] In order to further increase the functions of the display in order to realize a large area, high definition, and high speed of the liquid crystal display device required in the market, the conventional panel configuration has a temperature change. It is expected that display irregularities will occur at high temperatures, especially at high temperatures, and it will be difficult to obtain good display quality.
【０００７】本発明は、このような従来の問題点に鑑み
てなされたものであって、大画面や高精細表示を行う液
晶表示装置において、使用温度が変化しても、基板間の
ギャップむらが生じないようにすることにより、表示品
位を一定に保持できる液晶表示装置を実現することを目
的とする。SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem. In a liquid crystal display device for displaying a large screen or a high-definition display, even if the operating temperature changes, the gap between the substrates is not uniform. It is an object of the present invention to realize a liquid crystal display device capable of maintaining a constant display quality by preventing the occurrence of the display.
【０００８】[0008]
【課題を解決するための手段】このような課題を解決す
るため、本願の請求項１の発明は、透明基板に対して表
示電極が形成された第１及び第２の基板の周辺をシール
材で封止し、前記第１及び第２の基板のギャップ間に液
晶層を封入した液晶表示装置において、前記第１及び第
２の基板のいずれか一方の基板上の複数箇所に形成さ
れ、目標ギャップと同等の高さを有する突起と、前記突
起よりも柔らかい材料を用いて略球状に形成され、目標
ギャップ精度からみてその径が前記突起の高さより大き
く、前記突起間の一部に配置されたスペーサと、を具備
し、前記スペーサが弾性変形するよう押圧力を加えて前
記第１及び第２の基板を固定したことを特徴とするもの
である。In order to solve such a problem, the invention of claim 1 of the present application is directed to a method of forming a sealing material around a first and a second substrate on which a display electrode is formed on a transparent substrate. In a liquid crystal display device in which a liquid crystal layer is sealed between a gap between the first and second substrates, the liquid crystal display device is formed at a plurality of locations on one of the first and second substrates, and A projection having the same height as the gap, and formed in a substantially spherical shape using a material softer than the projection, the diameter thereof is larger than the height of the projection as viewed from a target gap accuracy, and is disposed in a part between the projections. Wherein the first and second substrates are fixed by applying a pressing force so that the spacer is elastically deformed.
【０００９】本願の請求項２の発明は、透明基板に対し
て表示電極が形成された第１及び第２の基板の周辺をシ
ール材で封止し、前記第１及び第２の基板のギャップ間
に液晶層を封入した液晶表示装置において、前記第１の
基板を構成する透明基板の複数箇所に画素単位で形成さ
れ、各画素の境界領域を遮光する遮光層と、前記第１の
基板に形成された前記遮光層の上部に設けられ、目標ギ
ャップと同等の高さを有する突起と、前記突起よりも柔
らかい材料を用いて略球状に形成され、目標ギャップ精
度からみてその径が前記突起の高さより大きく、前記突
起間の一部に配置されたスペーサと、を具備し、前記ス
ペーサが弾性変形するよう押圧力を加えて前記第１及び
第２の基板を固定したことを特徴とするものである。According to a second aspect of the present invention, the periphery of the first and second substrates on which the display electrodes are formed with respect to the transparent substrate is sealed with a sealing material, and the gap between the first and second substrates is formed. In a liquid crystal display device having a liquid crystal layer interposed therebetween, a light-shielding layer formed in a plurality of locations on a transparent substrate constituting the first substrate for each pixel, and shielding a boundary region of each pixel from light. A projection provided on the formed light-shielding layer and having a height equal to the target gap, and formed substantially spherical using a material softer than the projection, and the diameter of the projection is determined from the target gap accuracy. A spacer which is larger than the height and is disposed at a part between the protrusions, wherein the first and second substrates are fixed by applying a pressing force so that the spacer is elastically deformed. It is.
【００１０】本願の請求項３の発明は、透明基板に対し
て表示電極が形成された第１及び第２の基板の周辺をシ
ール材で封止し、前記第１及び第２の基板のギャップ間
に液晶層を封入した液晶表示装置において、前記第１の
基板を構成する透明基板の複数箇所に画素単位で形成さ
れ、各画素の境界領域を遮光する遮光層と、前記第１の
基板に形成された前記遮光層のうち、特定間隔毎に遮光
層の上部に設けられ、目標ギャップと同等の高さを有す
る突起と、前記突起よりも柔らかい材料を用いて略球状
に形成され、目標ギャップ精度からみてその径が前記突
起の高さより大きく、前記突起の形成されない前記遮光
層の上部に配置されたスペーサと、を具備し、前記スペ
ーサが弾性変形するよう押圧力を加えて前記第１及び第
２の基板を固定したことを特徴とするものである。According to a third aspect of the present invention, the periphery of the first and second substrates having the display electrodes formed on the transparent substrate is sealed with a sealing material, and the gap between the first and second substrates is formed. In a liquid crystal display device having a liquid crystal layer interposed therebetween, a light-shielding layer formed in a plurality of locations on a transparent substrate constituting the first substrate for each pixel, and shielding a boundary region of each pixel from light. Of the formed light shielding layer, a projection provided at an upper portion of the light shielding layer at a specific interval and having a height equal to the target gap, and a substantially spherical material formed of a material softer than the projection, the target gap A spacer whose diameter is larger than the height of the projections in view of accuracy, and a spacer disposed on the light-shielding layer where the projections are not formed, wherein a pressing force is applied so that the spacers are elastically deformed, and Fix the second board It is characterized in.
【００１１】本願の請求項４の発明は、請求項１〜３の
いずれか１項の液晶表示装置において、前記透明基板上
に、遮光層を有するカラーフィルタ層が表示画素単位で
形成されていることを特徴とするものである。According to a fourth aspect of the present invention, in the liquid crystal display device according to any one of the first to third aspects, a color filter layer having a light-shielding layer is formed for each display pixel on the transparent substrate. It is characterized by the following.
【００１２】本願の請求項５の発明は、請求項１〜４の
いずれか１項の液晶表示装置において、前記スペーサ
は、前記突起とほぼ同じ大きさに弾性変形した状態で保
持されていることを特徴とするものである。According to a fifth aspect of the present invention, in the liquid crystal display device according to any one of the first to fourth aspects, the spacer is held in a state of being elastically deformed to substantially the same size as the projection. It is characterized by the following.
【００１３】[0013]
【発明の実施の形態】（実施の形態１）本発明の実施の
形態１における液晶表示装置について、図１及び図２を
用いて説明する。図１は本実施の形態における液晶表示
装置の構造を示す断面図であり、従来例と同一部分は同
一の符号を付け、詳細な説明は省略する。図１に示すよ
うに、透明基板であるガラス基板１上に赤、緑、青の３
色からなるカラーフィルタ層２を形成する。そして各色
間に遮光層３を形成する。更にその上に透明樹脂である
トップコート層４を形成し、ＩＴＯからなる透明表示電
極５を全面に形成して第１の基板を作成する。この透明
表示電極５の上部であって、遮光層３の形成位置と同一
位置に、樹脂からなる突起６を形成する。突起材料とし
て、透明な感光性樹脂（例えばＪＳＲ製−ＪＮＰＣ４
３）を用い、突起の高さは例えば６μｍとし、ＲＧＢの
１トリオに対し１個の突起６を形成する。そして、透明
表示電極５の上部から配向膜材料を塗布し、突起６を除
く部分に配向膜８を形成する。(Embodiment 1) A liquid crystal display device according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing the structure of the liquid crystal display device according to the present embodiment. The same portions as those in the conventional example are denoted by the same reference numerals, and detailed description is omitted. As shown in FIG. 1, red, green, and blue 3 are placed on a glass substrate 1 which is a transparent substrate.
A color filter layer 2 made of a color is formed. Then, the light shielding layer 3 is formed between the colors. Further, a top coat layer 4 made of a transparent resin is formed thereon, and a transparent display electrode 5 made of ITO is formed on the entire surface to form a first substrate. A protrusion 6 made of resin is formed above the transparent display electrode 5 and at the same position as the position where the light shielding layer 3 is formed. As a projection material, a transparent photosensitive resin (for example, JNPC4 manufactured by JSR)
Using 3), the height of the projections is, for example, 6 μm, and one projection 6 is formed for one RGB trio. Then, an alignment film material is applied from above the transparent display electrode 5, and an alignment film 8 is formed in a portion except for the protrusion 6.
【００１４】対向する基板９にも透明表示電極１０を形
成し、第２の基板を作成する。そして第２の基板に配向
膜１１を積層する。次に第１及び第２の基板間に球状の
スペーサ１４を散布する。スペーサとして突起６より柔
らかい材料を用いて球状にする。例えば日本触媒製のＧ
ＳＺを用い、その粒径は突起６よりわずかに高く、例え
ば６．１μｍとし、散布個数は１０〜２０個／ｍｍ2 と
した。最後に、周辺をシール材１２で封止し、液晶を充
填して液晶層１３を形成する。この際の最終的なセルギ
ャップは６．０μｍとなるように基板に押圧力を加え、
ギャップを調整した。この状態では図１に示すように、
スペーサ１４の形状が球体から約０．１μｍ変形し、回
転楕円体となった。こうして第１，第２の基板を保持
し、液晶表示装置を作製した。A transparent display electrode 10 is also formed on the opposing substrate 9 to form a second substrate. Then, the alignment film 11 is stacked on the second substrate. Next, spherical spacers 14 are dispersed between the first and second substrates. The spacer is made spherical using a material softer than the protrusion 6. For example, G from Nippon Shokubai
SZ was used, and its particle size was slightly higher than that of the projections 6, for example, 6.1 μm, and the number of sprays was 10 to 20 / mm 2 . Finally, the periphery is sealed with a sealing material 12, and liquid crystal is filled to form a liquid crystal layer 13. At this time, a pressing force is applied to the substrate so that the final cell gap becomes 6.0 μm.
The gap was adjusted. In this state, as shown in FIG.
The shape of the spacer 14 was deformed by about 0.1 μm from a sphere, and became a spheroid. Thus, the first and second substrates were held, and a liquid crystal display device was manufactured.
【００１５】上記のように作製された液晶表示装置を常
温で点灯して、その表示品位を確かめたところ、均一な
表示がされていることが確認された。また、作製した液
晶表示装置を４０℃の高温状態に１時間放置して表示状
態を確認したところ、従来のように基板間でのギャップ
むらに起因する表示むらが見られず、中間調表示におい
てもむらのない表示がされることが確認された。図２は
この液晶表示装置を高温放置したときの状態を示す断面
図である。本図に示すように、温度上昇により液晶層１
３が膨張すると、基板９の下面、厳密には配向膜１１の
下面が突起６の先端部から離れる。しかし、ガラス基板
１と基板９のギャップは、いずれの部分も球状になった
スペーサ１４により一定に保持されているので、表示む
らが発生しない。When the liquid crystal display device manufactured as described above was turned on at room temperature and its display quality was confirmed, it was confirmed that a uniform display was obtained. Further, when the produced liquid crystal display device was left at a high temperature of 40 ° C. for 1 hour to confirm the display state, display unevenness due to gap unevenness between the substrates was not observed as in the related art. It was confirmed that the display was even. FIG. 2 is a sectional view showing a state when the liquid crystal display device is left at a high temperature. As shown in FIG.
When 3 expands, the lower surface of the substrate 9, more precisely, the lower surface of the alignment film 11 separates from the tip of the protrusion 6. However, since the gap between the glass substrate 1 and the substrate 9 is kept constant by the spherical spacers 14 at all portions, display unevenness does not occur.
【００１６】（実施の形態２）次に本発明の実施の形態
２における液晶表示装置について、図３及び図４を用い
て説明する。図３は本実施の形態における液晶表示装置
の構造を示す断面図であり、実施の形態１と同一部分は
同一の符号を付け、詳細な説明は省略する。本図におい
て、透明基板であるガラス基板１上に赤、緑、青の３色
からなるカラーフィルタ層２を形成し、各色間に遮光層
３を形成する。遮光層３とカラーフィルタ層２の上に透
明樹脂であるトップコート層４を形成し、更にその上に
ＩＴＯからなる透明表示電極５を全面に形成して第１の
基板を作成する。(Embodiment 2) Next, a liquid crystal display device according to Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 3 is a cross-sectional view showing the structure of the liquid crystal display device according to the present embodiment, and the same portions as those in Embodiment 1 are denoted by the same reference numerals, and detailed description is omitted. In this figure, a color filter layer 2 of three colors of red, green and blue is formed on a glass substrate 1 which is a transparent substrate, and a light shielding layer 3 is formed between each color. A top coat layer 4 made of a transparent resin is formed on the light shielding layer 3 and the color filter layer 2, and a transparent display electrode 5 made of ITO is further formed on the top coat layer 4 to form a first substrate.
【００１７】次に透明表示電極５の上部であって、遮光
層３の形成位置と同一位置に、樹脂からなる突起６を形
成する。実施の形態１と異なり、３箇所の遮光層３に対
して１箇所の遮光層３の上部に突起６を形成する。この
際用いた突起材料は、透明な感光性樹脂（例えばＪＳＲ
製−ＪＮＰＣ４３）である。突起６の高さは６μｍと
し、ＲＧＢの１トリオに対し突起６を１個とする。次に
突起６が形成された透明表示電極５の上面に、配向膜材
料を塗布し、島状の配向膜８を形成する。Next, a protrusion 6 made of resin is formed on the transparent display electrode 5 at the same position as the position where the light shielding layer 3 is formed. Unlike the first embodiment, the protrusions 6 are formed on one light shielding layer 3 for three light shielding layers 3. The projection material used at this time is a transparent photosensitive resin (for example, JSR
-JNPC43). The height of the projection 6 is 6 μm, and one projection 6 is provided for one RGB trio. Next, an alignment film material is applied on the upper surface of the transparent display electrode 5 on which the protrusions 6 are formed, and an island-like alignment film 8 is formed.
【００１８】対向する基板９にも表示電極１０を形成
し、第２の基板を作成する。そして配向膜１１を積層
し、第１及び第２の基板間にスペーサ１４を散布した。
スペーサ１４として突起６より柔らかい材料を用いて球
状にする。例えば日本触媒製ＧＳＺを用い、その粒径は
突起６よりわずかに高く、例えば６．１μｍとし、散布
個数は１０〜２０個／ｍｍ2 とした。散布場所は、図３
に示すように、突起６の形成されない遮光層３の上部と
する。最後に、第１，第２の基板の周辺をシール材１２
で封止し、液晶を注入して液晶層１３を形成した。この
際の最終的なセルギャップは６．０μｍとなるように両
基板の押圧力を調整し、スペーサ１４が約０．１μｍ変
形した状態で基板を保持するようにした。Display electrodes 10 are also formed on the opposing substrate 9 to form a second substrate. Then, the alignment film 11 was laminated, and the spacers 14 were sprayed between the first and second substrates.
The spacer 14 is formed into a spherical shape using a material softer than the protrusion 6. For example, GSZ manufactured by Nippon Shokubai Co., Ltd. was used, and its particle size was slightly higher than that of the projections 6, for example, 6.1 μm, and the number of sprayed particles was 10 to 20 / mm 2 . Fig. 3
As shown in the figure, the upper part is the upper part of the light shielding layer 3 where the protrusion 6 is not formed. Finally, the periphery of the first and second substrates is sealed with a sealing material 12.
, And liquid crystal was injected to form a liquid crystal layer 13. At this time, the pressing force of both substrates was adjusted so that the final cell gap became 6.0 μm, and the substrate was held in a state where the spacer 14 was deformed by about 0.1 μm.
【００１９】こうして作製された液晶表示装置を常温で
点灯して、その表示品位を確かめたところ、均一な表示
がされていることが確認された。また、作製した液晶表
示装置を４０℃の高温状態に１時間放置した。そして表
示状態を確認したところ、従来のように面内でのギャッ
プむらに起因する表示むらが見られず、中間調表示にお
いても、むらのない表示がされていることが確認でき
た。The liquid crystal display device thus manufactured was turned on at room temperature, and its display quality was confirmed. As a result, it was confirmed that uniform display was achieved. Further, the manufactured liquid crystal display device was left at a high temperature of 40 ° C. for 1 hour. Then, when the display state was confirmed, it was confirmed that there was no display unevenness due to gap in-plane unevenness as in the related art, and even in the halftone display, there was no uneven display.
【００２０】図４はこの液晶表示装置を高温放置したと
きの状態を示す断面図である。本図に示すように、温度
上昇により液晶層１３が膨張すると、基板９の下面、厳
密には配向膜１１の下面が突起６の先端部から離れる。
しかし、ガラス基板１と基板９のギャップは、膨張又は
復元した球状のスペーサ１４により一定に保持されてい
るので、表示むらが発生しない。FIG. 4 is a sectional view showing a state when the liquid crystal display device is left at a high temperature. As shown in this figure, when the liquid crystal layer 13 expands due to a rise in temperature, the lower surface of the substrate 9, more precisely, the lower surface of the alignment film 11 separates from the tip of the protrusion 6.
However, since the gap between the glass substrate 1 and the substrate 9 is kept constant by the expanded or restored spherical spacer 14, display unevenness does not occur.
【００２１】[0021]
【発明の効果】以上のように本発明によれば、基板間の
ギャップ制御のために基板上に突起を形成した液晶表示
装置において、突起の高さより大きい径のスペーサを、
突起の高さとほぼ同じ大きさで狭持することにより、液
晶表示装置が比較的高温に保持されて液晶層が膨張した
場合でも、スペーサの復元力により基板間のギャップむ
らの発生を抑えることができる。このため使用環境温度
が上昇しても、均一な表示が得られる。特に液晶表示装
置が大画面化、高精細化するにつれて、この効果が大き
いものとなる。As described above, according to the present invention, in a liquid crystal display device in which a projection is formed on a substrate for controlling a gap between the substrates, a spacer having a diameter larger than the height of the projection is used.
When the liquid crystal display device is maintained at a relatively high temperature and the liquid crystal layer expands, the gap between the substrates can be suppressed by the holding force of the spacer by holding the liquid crystal display device at substantially the same size as the height of the protrusion. it can. For this reason, even if the use environment temperature rises, a uniform display can be obtained. In particular, as the liquid crystal display device has a larger screen and higher definition, this effect becomes greater.
【図１】本発明の実施の形態１における液晶表示装置の
構造を示す断面図である。FIG. 1 is a cross-sectional view illustrating a structure of a liquid crystal display device according to Embodiment 1 of the present invention.
【図２】実施の形態１の液晶表示装置を高温放置したと
きの状態を示す断面図である。FIG. 2 is a cross-sectional view showing a state when the liquid crystal display device of Embodiment 1 is left at a high temperature.
【図３】本発明の実施の形態２における液晶表示装置の
構造を示す断面図である。FIG. 3 is a sectional view illustrating a structure of a liquid crystal display device according to a second embodiment of the present invention.
【図４】実施の形態２の液晶表示装置を高温放置したと
きの状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state when the liquid crystal display device of Embodiment 2 is left at a high temperature.
【図５】従来の液晶表示装置の構造を示す断面図であ
る。FIG. 5 is a cross-sectional view illustrating a structure of a conventional liquid crystal display device.
【図６】従来の液晶表示装置を高温放置したときの状態
を示す断面図である。FIG. 6 is a cross-sectional view showing a state when a conventional liquid crystal display device is left at a high temperature.
１ ガラス基板 ２ カラーフィルタ層 ３ 遮光層 ４ トップコート層 ５ 透明表示電極 ６ 突起 ８，１１ 配向膜 ９ 基板 １０ 透明表示電極 １２ シール材 １３ 液晶層 １４ スペーサ DESCRIPTION OF SYMBOLS 1 Glass substrate 2 Color filter layer 3 Shield layer 4 Top coat layer 5 Transparent display electrode 6 Projection 8,11 Alignment film 9 Substrate 10 Transparent display electrode 12 Sealing material 13 Liquid crystal layer 14 Spacer
Claims (5)
第１及び第２の基板の周辺をシール材で封止し、前記第
１及び第２の基板のギャップ間に液晶層を封入した液晶
表示装置において、 前記第１及び第２の基板のいずれか一方の基板上の複数
箇所に形成され、目標ギャップと同等の高さを有する突
起と、 前記突起よりも柔らかい材料を用いて略球状に形成さ
れ、目標ギャップ精度からみてその径が前記突起の高さ
より大きく、前記突起間の一部に配置されたスペーサ
と、を具備し、 前記スペーサが弾性変形するよう押圧力を加えて前記第
１及び第２の基板を固定したことを特徴とする液晶表示
装置。1. A periphery of first and second substrates on which display electrodes are formed on a transparent substrate is sealed with a sealing material, and a liquid crystal layer is sealed between a gap between the first and second substrates. In the liquid crystal display device, a projection formed at a plurality of positions on one of the first and second substrates and having a height equal to a target gap, and a substantially spherical material using a material softer than the projection And a spacer whose diameter is larger than the height of the projections in view of the target gap accuracy, and a spacer arranged at a part between the projections, wherein a pressing force is applied so that the spacers are elastically deformed. A liquid crystal display device, wherein the first and second substrates are fixed.
第１及び第２の基板の周辺をシール材で封止し、前記第
１及び第２の基板のギャップ間に液晶層を封入した液晶
表示装置において、 前記第１の基板を構成する透明基板の複数箇所に画素単
位で形成され、各画素の境界領域を遮光する遮光層と、 前記第１の基板に形成された前記遮光層の上部に設けら
れ、目標ギャップと同等の高さを有する突起と、 前記突起よりも柔らかい材料を用いて略球状に形成さ
れ、目標ギャップ精度からみてその径が前記突起の高さ
より大きく、前記突起間の一部に配置されたスペーサ
と、を具備し、 前記スペーサが弾性変形するよう押圧力を加えて前記第
１及び第２の基板を固定したことを特徴とする液晶表示
装置。2. A periphery of the first and second substrates on which display electrodes are formed on a transparent substrate is sealed with a sealing material, and a liquid crystal layer is sealed between the gaps of the first and second substrates. In the liquid crystal display device, a light-shielding layer formed on a plurality of portions of a transparent substrate constituting the first substrate in a pixel unit, and shielding a boundary region of each pixel, and a light-shielding layer formed on the first substrate A projection provided at an upper portion and having a height equal to the target gap; and a substantially spherical shape formed of a material softer than the projection, the diameter of which is larger than the height of the projection in view of a target gap accuracy. A liquid crystal display device, comprising: a spacer disposed in a part of the liquid crystal display; and pressing the first and second substrates by applying a pressing force so that the spacer is elastically deformed.
第１及び第２の基板の周辺をシール材で封止し、前記第
１及び第２の基板のギャップ間に液晶層を封入した液晶
表示装置において、 前記第１の基板を構成する透明基板の複数箇所に画素単
位で形成され、各画素の境界領域を遮光する遮光層と、 前記第１の基板に形成された前記遮光層のうち、特定間
隔毎に遮光層の上部に設けられ、目標ギャップと同等の
高さを有する突起と、 前記突起よりも柔らかい材料を用いて略球状に形成さ
れ、目標ギャップ精度からみてその径が前記突起の高さ
より大きく、前記突起の形成されない前記遮光層の上部
に配置されたスペーサと、を具備し、 前記スペーサが弾性変形するよう押圧力を加えて前記第
１及び第２の基板を固定したことを特徴とする液晶表示
装置。3. A periphery of the first and second substrates on which the display electrodes are formed on the transparent substrate is sealed with a sealant, and a liquid crystal layer is sealed between the gaps of the first and second substrates. In the liquid crystal display device, a light-shielding layer formed on a plurality of portions of a transparent substrate constituting the first substrate in a pixel unit, and shielding a boundary region of each pixel, and a light-shielding layer formed on the first substrate Among them, a projection provided at an upper portion of the light-shielding layer at a specific interval, and having a height equal to the target gap, is formed in a substantially spherical shape using a material softer than the projection, and the diameter is determined from the viewpoint of the target gap accuracy. A spacer which is larger than the height of the projection and which is disposed on the light-shielding layer where the projection is not formed, wherein the first and second substrates are fixed by applying a pressing force so that the spacer is elastically deformed. Liquid characterized by the following: Display device.
ーフィルタ層が表示画素単位で形成されていることを特
徴とする請求項１〜３のいずれか１項記載の液晶表示装
置。4. The liquid crystal display device according to claim 1, wherein a color filter layer having a light shielding layer is formed on the transparent substrate for each display pixel.
きさに弾性変形した状態で保持されていることを特徴と
する請求項１〜４のいずれか１項記載の液晶表示装置。5. The liquid crystal display device according to claim 1, wherein said spacer is held in a state of being elastically deformed to substantially the same size as said projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10218994A JP2000056311A (en) | 1998-08-03 | 1998-08-03 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10218994A JP2000056311A (en) | 1998-08-03 | 1998-08-03 | Liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000056311A true JP2000056311A (en) | 2000-02-25 |
Family
ID=16728609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10218994A Pending JP2000056311A (en) | 1998-08-03 | 1998-08-03 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000056311A (en) |
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