JP2012073556A

JP2012073556A - Liquid crystal display, and manufacturing method of the same

Info

Publication number: JP2012073556A
Application number: JP2010220306A
Authority: JP
Inventors: Yoshishige Iwanami; 慶成岩浪
Original assignee: Casio Computer Co Ltd
Current assignee: Casio Computer Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2012-04-12

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display having excellent reliability, and a manufacturing method of the same.SOLUTION: A nozzle part 303 is projectingly provided to a back side frame side 301 of a rectangular frame shaped sealing material 3 jointing a front and a rear glass substrates, and a transfer electrode 14 is installed adjacent to the nozzle part 303. A sealant 15 for sealing the nozzle part 303 is filled in the nozzle part 303, and the adjacent transfer electrode 14 is deposited on the sealant 15.

Description

この発明は、液晶表示素子とその製造方法に関する。 The present invention relates to a liquid crystal display element and a manufacturing method thereof.

近年、携帯電話機や携帯情報端末（ＰＤＡ：personal digital assistance）等のモバイル電子機器の普及が目覚しく、それに伴い、それらモバイル電子機器に対する小型薄型化の要望が益々高くなっている。従って、モバイル機器の表示モニターとして多用されている液晶表示素子に対しても、小型薄型化の要求は極めて厳しいものがある。 In recent years, mobile electronic devices such as mobile phones and personal digital assistants (PDAs) have become widespread, and accordingly, there is an increasing demand for smaller and thinner mobile electronic devices. Therefore, there is an extremely severe demand for a small and thin liquid crystal display element that is widely used as a display monitor for mobile devices.

液晶表示素子において、表示が行われる表示領域を縮小せずに小型化を推進するには、表示が行われない表示領域の周縁部つまり額縁部を縮小すること（狭額縁化）が求められる。 In the liquid crystal display element, in order to promote downsizing without reducing the display area where the display is performed, it is required to reduce the peripheral portion of the display area where the display is not performed, that is, the frame portion (narrow frame).

液晶表示素子の狭額縁化を推進するために解決しなければならない課題の一つとして、基板間の配線同士を導通する導通部材（以下、トランスファ電極という）の配置スペースの問題がある。 One of the problems that must be solved in order to promote the narrowing of the frame of a liquid crystal display element is a problem of the arrangement space of a conductive member (hereinafter referred to as a transfer electrode) that conducts wiring between substrates.

すなわち、従来から、一対の基板の各対向面に設けられた電極に対して電圧を印加するドライバを一方の基板に搭載し、当該一方の基板に設けられたドライバと他方の基板に形成された電極とを導通接続するために上記トランスファ電極が設置される。 That is, conventionally, a driver for applying a voltage to the electrodes provided on the opposing surfaces of a pair of substrates is mounted on one substrate, and the driver provided on the one substrate and the other substrate are formed. The transfer electrode is installed for conducting connection with the electrode.

トランスファ電極は、通常、特許文献１の従来技術等にも示されるように、一対の基板間に液晶を封入するシール材の外側に設置されるが、このトランスファ電極の設置スペースを確保するために、その分、液晶表示素子の額縁部の幅が広がることになる。 The transfer electrode is usually installed outside the sealing material that encloses the liquid crystal between the pair of substrates, as shown in the prior art of Patent Document 1, etc., in order to secure the installation space for the transfer electrode. Accordingly, the width of the frame portion of the liquid crystal display element is widened.

そこで、上記特許文献１の発明では、トランスファ電極を液晶注入口内に配置し、額縁部の拡大を回避している。 Therefore, in the invention of Patent Document 1, the transfer electrode is arranged in the liquid crystal injection port to avoid the enlargement of the frame portion.

特開平１０−６２７９３号公報Japanese Patent Laid-Open No. 10-62793

然るに、液晶注入口にトランスファ電極を配置した場合、それが障害となって液晶の注入速度が遅くなったり液晶にトランスファ電極に係る不純物が混入する等の問題が生じる。また、液晶の注入速度の低下を防ぐために注入口を広げることも提案されているが、この場合、液晶表示素子の強度が低下したり、広くなった注入口を封止するために多めに充填された封止材が内部に食み出して表示品質を低下させる虞がある。 However, when the transfer electrode is arranged at the liquid crystal injection port, it becomes an obstacle and causes problems such as a slow liquid crystal injection speed and contamination of the liquid crystal with impurities related to the transfer electrode. Also, it has been proposed to widen the injection port in order to prevent a decrease in the injection rate of the liquid crystal. In this case, however, the liquid crystal display element is reduced in strength or filled to seal the widened injection port. There is a possibility that the sealing material that has been squeezed out will deteriorate the display quality.

本発明の目的は、信頼性に優れた液晶表示素子とその製造方法を提供することである。 The objective of this invention is providing the liquid crystal display element excellent in reliability, and its manufacturing method.

以上の課題を解決するため、本発明の一態様によれば、
一方の主面に第１電極が形成された第１基板と、一方の主面に第２電極が形成された第２基板とが、前記一方の主面同士を互いに対向させて枠状のシール材によって接合され、前記第１基板、前記第２基板、及び前記シール材に囲まれた空間内に液晶が封入された液晶表示素子であって、
前記枠状のシール材には開口が所定箇所に形成され、
前記第１基板には前記シール材に囲まれた領域外であって前記開口に隣接する領域に、前記第１電極に導通接続された第１接続パッドが設けられ、
前記第２基板には前記シール材に囲まれた領域外に、前記第１電極に導通接続された第１電極接続配線が設けられ、当該領域外であって前記開口に隣接する領域に、前記第１電極接続配線に導通接続された第２接続パッドが設けられ、
前記第１接続パッドと前記第２接続パッドとの間を導通接続する基板間導通部材を更に備え、
前記開口を封止する封止材が、基板間導通部材の側面を覆うように設けられていることを特徴とする液晶表示素子が提供される。
上記液晶表示素子において、好ましくは、前記基板間導通部材は、側面の所定領域が前記第１基板及び前記第２基板の端面と面一になるように設けられ、前記封止材は、前記側面の当該所定領域を覆うように設けられている。
上記液晶表示素子において、好ましくは、前記封止材は、前記第１基板及び前記第２基板の前記端面から突出した突出部を覆うように設けられている。
上記液晶表示素子において、好ましくは、前記シール材は、前記第１基板又は前記第２基板の外周縁上に前記開口が形成されている。
上記液晶表示素子において、好ましくは、前記第２基板には前記シール材に囲まれた領域外に、前記第２電極に導通接続された第２電極接続配線が設けられ、
前記第２基板のうち前記第１基板に重ならないように配置された非重畳領域に、前記第１電極接続配線及び前記第２電極接続配線の各端部である出力端子が設けられ、前記第１電極及び前記第２電極に電圧を印加するドライバが前記出力端子に導通接続させて搭載されている。
上記液晶表示素子において、好ましくは、前記第１電極及び前記第２電極のいずれか一方の電極は当該一方の電極が設けられた基板の前記一方の主面のうち前記シール材に囲まれた領域に形成された共通電極であり、他方の電極は当該他方の電極が設けられた基板の前記一方の主面のうち前記シール材に囲まれた領域に複数形成された画素電極であり、
前記第１電極接続配線及び前記第２接続配線のうち前記他方の電極に接続された他方の接続配線は、前記画素電極に接続された薄膜トランジスタに接続されたゲートライン及びソースラインを含む。
上記液晶表示素子において、好ましくは、前記第１基板の他方の主面に第１偏光板が設けられ、前記第２基板の他方の主面に第２偏光板が設けられ、
前記ドライバから前記第１電極及び前記第２電極に電圧を印加することによって、前記第１電極と前記第２電極との間に介在する前記液晶の分子の向きを制御して表示を行う。 In order to solve the above problems, according to one aspect of the present invention,
A first substrate having a first electrode formed on one main surface, and a second substrate having a second electrode formed on one main surface, the one main surface facing each other and a frame-shaped seal A liquid crystal display element in which liquid crystal is sealed in a space surrounded by the first substrate, the second substrate, and the sealing material,
In the frame-shaped sealing material, an opening is formed at a predetermined location,
The first substrate is provided with a first connection pad electrically connected to the first electrode outside the region surrounded by the sealing material and adjacent to the opening.
The second substrate is provided with a first electrode connection wiring that is conductively connected to the first electrode outside the region surrounded by the sealing material, and in the region outside the region and adjacent to the opening, A second connection pad electrically connected to the first electrode connection wiring is provided;
An inter-substrate conducting member that conducts electrical connection between the first connection pad and the second connection pad;
A liquid crystal display element is provided in which a sealing material for sealing the opening is provided so as to cover a side surface of the inter-substrate conducting member.
In the liquid crystal display element, preferably, the inter-substrate conduction member is provided so that a predetermined region of a side surface is flush with end surfaces of the first substrate and the second substrate, and the sealing material is the side surface. Are provided so as to cover the predetermined area.
In the liquid crystal display element, preferably, the sealing material is provided so as to cover protruding portions protruding from the end surfaces of the first substrate and the second substrate.
In the liquid crystal display element, preferably, the sealing material has the opening formed on an outer peripheral edge of the first substrate or the second substrate.
In the liquid crystal display element, preferably, the second substrate is provided with a second electrode connection wiring electrically connected to the second electrode outside a region surrounded by the sealing material,
An output terminal that is an end of each of the first electrode connection wiring and the second electrode connection wiring is provided in a non-overlapping region arranged so as not to overlap the first substrate in the second substrate, A driver for applying a voltage to one electrode and the second electrode is mounted in conduction with the output terminal.
In the liquid crystal display element, preferably, one of the first electrode and the second electrode is a region surrounded by the sealing material on the one main surface of the substrate on which the one electrode is provided. The other electrode is a plurality of pixel electrodes formed in a region surrounded by the sealing material on the one main surface of the substrate on which the other electrode is provided,
Of the first electrode connection wiring and the second connection wiring, the other connection wiring connected to the other electrode includes a gate line and a source line connected to the thin film transistor connected to the pixel electrode.
In the liquid crystal display element, preferably, a first polarizing plate is provided on the other main surface of the first substrate, and a second polarizing plate is provided on the other main surface of the second substrate,
By applying a voltage from the driver to the first electrode and the second electrode, display is performed by controlling the orientation of the molecules of the liquid crystal interposed between the first electrode and the second electrode.

また、本発明の他の態様によれば、
複数の液晶表示素子を形成可能な面積を有し前記各液晶表示素子の形成領域に第１電極及び当該第１電極に導通接続された第１接続パッドが形成された第１親基板と、複数の液晶表示素子を形成可能な面積を有し前記各液晶表示素子の形成領域に第２電極、当該第２電極に導通接続された第２電極接続配線、当該第２電極接続配線と絶縁された第１電極接続配線、及び当該第１電極接続配線に導通接続された第２接続パッドが形成された第２親基板とを準備する工程と、
前記第１親基板又は前記第２親基板上に、前記第１親基板又は前記第２親基板の前記各液晶表示素子の形成領域のうち隣接する２つの前記形成領域を取り囲む無端枠形状のシール材を、前記第１接続パッドと前記第１電極との間か、又は前記第２接続パッド、前記第１電極接続配線及び前記第２電極接続配線と前記第２電極との間かの、いずれかに配置されるように設ける工程と、
前記第１親基板又は前記第２親基板上に、前記第１接続パッド又は前記第２接続パッドに導通接続された基板間導通部材を、前記２つの形成領域の境界線を跨るように設ける工程と、
前記第１親基板と前記第２親基板とを、前記第１電極及び前記第２電極が形成された面同士を対向させて、前記形成領域同士が重なり合うように、前記シール材を介して接合する工程と、
前記第１親基板及び前記第２親基板を前記２つの形成領域の境界線に沿って切断することによって、当該境界線に沿った外周縁を有する複数の液晶表示素子接合体を形成するとともに、前記シール材及び前記基板間導通部材を当該境界線に沿って分断して、形成された前記各液晶表示素子接合体に基板間導通部材を形成し且つ当該各液晶表示素子接合体の外周縁上において前記シール材に開口を形成する工程と、
前記開口を介して前記液晶表示素子接合体の前記シール材によって囲まれた領域内に液晶を注入する工程と、
前記開口を塞ぐとともに前記基板間導通部材の側面を覆うように、封止材を設ける工程とを有することを特徴とする液晶表示素子の製造方法が提供される。
上記液晶表示素子において、好ましくは、前記親基板を切断する工程は、前記基板間導通部材をその側面の所定領域が前記第１基板及び前記第２基板の端面と面一になるように設けることを含み、
前記封止材を設ける工程は、前記封止材を、前記基板間導通部材の側面の当該所定領域を覆うように設けること含む。
上記液晶表示素子において、好ましくは、前記封止材を設ける工程は、前記親基板を切断する工程において、前記第１基板及び前記第２基板の前記端面から突出した又は窪んだ異形部が形成された場合に、当該異形部を覆うように前記封止材を設けることを含む。
上記液晶表示素子において、好ましくは、前記シール材を設ける工程は、前記シール材を前記第１接続パッド又は前記第２接続パッドに隣接した領域を含むように設ける。 According to another aspect of the invention,
A first parent substrate having an area where a plurality of liquid crystal display elements can be formed, and a first connection pad formed on the first electrode and conductively connected to the first electrode in a formation region of each liquid crystal display element; The liquid crystal display element has an area where the liquid crystal display element can be formed, and a second electrode is formed in the formation region of each liquid crystal display element. Preparing a first electrode connection wiring and a second parent substrate on which a second connection pad electrically connected to the first electrode connection wiring is formed;
An endless frame-shaped seal surrounding two adjacent formation regions among the formation regions of the liquid crystal display elements of the first parent substrate or the second parent substrate on the first parent substrate or the second parent substrate. Either the material is between the first connection pad and the first electrode, or between the second connection pad, the first electrode connection wiring and the second electrode connection wiring and the second electrode. A step of being arranged so that
A step of providing an inter-substrate conductive member conductively connected to the first connection pad or the second connection pad on the first parent substrate or the second parent substrate so as to straddle a boundary line between the two formation regions. When,
The first parent substrate and the second parent substrate are joined via the sealing material so that the surfaces on which the first electrode and the second electrode are formed face each other and the formation regions overlap each other. And a process of
By cutting the first mother substrate and the second mother substrate along a boundary line between the two formation regions, thereby forming a plurality of liquid crystal display element assemblies having outer peripheral edges along the boundary line, The sealing material and the inter-substrate conducting member are divided along the boundary line, and the inter-substrate conducting member is formed on each formed liquid crystal display element assembly, and on the outer peripheral edge of each liquid crystal display element assembly Forming an opening in the sealing material in
Injecting liquid crystal into a region surrounded by the sealing material of the liquid crystal display element assembly through the opening;
And a step of providing a sealing material so as to close the opening and cover the side surface of the inter-substrate conducting member.
In the liquid crystal display element, preferably, in the step of cutting the parent substrate, the inter-substrate conductive member is provided so that a predetermined region on a side surface thereof is flush with end surfaces of the first substrate and the second substrate. Including
The step of providing the sealing material includes providing the sealing material so as to cover the predetermined region on the side surface of the inter-substrate conducting member.
In the liquid crystal display element, preferably, in the step of providing the sealing material, in the step of cutting the parent substrate, a deformed portion protruding or recessed from the end surfaces of the first substrate and the second substrate is formed. The sealing material is provided so as to cover the deformed portion.
In the liquid crystal display element, preferably, in the step of providing the sealing material, the sealing material is provided so as to include a region adjacent to the first connection pad or the second connection pad.

本発明によれば、信頼性に優れた液晶表示素子とその製造方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the liquid crystal display element excellent in reliability and its manufacturing method can be provided.

本発明の一実施形態としての液晶表示素子を示す平面図である。It is a top view which shows the liquid crystal display element as one Embodiment of this invention. 上記液晶表示素子の要部構成を示す上記平面図におけるII−II線断面図である。It is II-II sectional view taken on the said top view which shows the principal part structure of the said liquid crystal display element. 本発明の一実施形態としての液晶表示素子の製造方法を示す平面図で、（ａ）は第１の親基板を、（ｂ）は第２の親基板を、それぞれ示している。FIG. 2 is a plan view showing a method for manufacturing a liquid crystal display element as one embodiment of the present invention, in which (a) shows a first parent substrate and (b) shows a second parent substrate. 上記液晶表示素子の製造方法を示す平面図で、切離される前の親基板接合体を示している。It is a top view which shows the manufacturing method of the said liquid crystal display element, and has shown the parent board | substrate assembly before separating. 上記液晶表示素子の製造方法を示す平面図で、液晶注入前のセル短冊を示している。It is a top view which shows the manufacturing method of the said liquid crystal display element, and has shown the cell strip before liquid crystal injection | pouring.

図１に示されるように、本実施形態の液晶表示素子は、アクティブマトリクス型の液晶表示素子であり、矩形をなす一対のガラス基板１、２が矩形枠状のシール材３を介し接合されてなる。一対のガラス基板１、２は、幅が同じで、長さは、表示の観察側に位置させるガラス基板（以下、前ガラス基板という）１よりも、背面側に位置させるガラス基板（以下、後ガラス基板という）の方が長く、一方の各短手縁辺を揃え、後ガラス基板２の他方の短手縁辺を前ガラス基板１の対応する短手縁辺よりも適長突出させた配置で接合されている。即ち、後ガラス基板１は、前ガラス基板２に重ならないように配置された非重畳領域を有する。なお、以下の説明においては、本液晶表示素子の前、後ガラス基板１、２の短手縁辺を揃えた側を奥側、後ガラス基板２の短手縁辺を突出させた側を手前側、と呼ぶ。 As shown in FIG. 1, the liquid crystal display element of the present embodiment is an active matrix type liquid crystal display element, and a pair of glass substrates 1 and 2 forming a rectangle are joined via a rectangular frame-shaped sealing material 3. Become. The pair of glass substrates 1 and 2 have the same width, and the length is a glass substrate (hereinafter referred to as rear side) positioned on the back side rather than a glass substrate (hereinafter referred to as front glass substrate) 1 positioned on the display viewing side. Glass substrate) is longer, and each short edge of one side is aligned, and the other short edge of rear glass substrate 2 is joined with an appropriate length protruding from the corresponding short edge of front glass substrate 1. ing. That is, the rear glass substrate 1 has a non-overlapping region arranged so as not to overlap the front glass substrate 2. In the following description, in front of the present liquid crystal display element, the side where the short edges of the rear glass substrates 1 and 2 are aligned is the back side, the side where the short edges of the rear glass substrate 2 are projected is the front side, Call it.

本実施形態のシール材３は、熱硬化型エポキシ樹脂からなり、前ガラス基板１の縁部に沿って延在する矩形枠状に配置されている。このシール材３における奥側の枠辺３０１の中央部が開口され、この開口部３０２には、ノズル部３０３が枠外に向けて凸設されている。このノズル部３０３は、液晶を注入する際の注入口となる。このシール材３は、その両端が、枠辺３０１の中央部において、前、後ガラス基板１、２の外周縁にまで延在するように設けられることによって、開口部３０２が形成されている。 The sealing material 3 of the present embodiment is made of a thermosetting epoxy resin and is arranged in a rectangular frame shape extending along the edge of the front glass substrate 1. A central portion of the frame side 301 on the back side of the sealing material 3 is opened, and a nozzle portion 303 is projected from the opening 302 toward the outside of the frame. The nozzle portion 303 serves as an injection port for injecting liquid crystal. The sealing material 3 is provided so that both ends thereof extend to the outer peripheral edges of the front and rear glass substrates 1 and 2 at the center of the frame side 301, thereby forming an opening 302.

前、後ガラス基板１、２が対向しシール材３によって囲まれた領域内では、図２に示されるように、前ガラス基板１の一対の主面のうち後ガラス基板２との対向面には一枚膜状の共通電極４が設置され、後ガラス基板２の一対の主面のうち前ガラス基板１との対向面に複数の画素電極５がマトリックス状に配置されている。そして、両電極４、５及び両電極４、５に挟まれた液晶６によって形成された画素がマトリックス状に複数配置されて、表示領域Ｄｄが形成されている。そして、図示されてはいないが、後ガラス基板２には、複数の薄膜トランジスタ（以下、ＴＦＴ（Thin Film Transistor）という。）がマトリックス状に配置され、各画素電極５に各ＴＦＴを介して接続された複数のゲートライン及びソースラインが設けられている。複数のゲートラインは互いに平行に行方向に設けられ、複数のソースラインが互いに平行に列方向に設けられている。なお、両電極４、５を覆って、液晶６の配向を制御する透明な配向膜７ａ、７ｂがそれぞれ一様に被着されている。 In the region where the front and rear glass substrates 1 and 2 face each other and are surrounded by the sealing material 3, the surface facing the rear glass substrate 2 out of the pair of main surfaces of the front glass substrate 1 is shown in FIG. 2. A single film-like common electrode 4 is installed, and a plurality of pixel electrodes 5 are arranged in a matrix on the surface facing the front glass substrate 1 out of a pair of main surfaces of the rear glass substrate 2. A plurality of pixels formed by the electrodes 4 and 5 and the liquid crystal 6 sandwiched between the electrodes 4 and 5 are arranged in a matrix to form a display region Dd. Although not shown, a plurality of thin film transistors (hereinafter referred to as TFT (Thin Film Transistor)) are arranged in a matrix on the rear glass substrate 2 and are connected to the pixel electrodes 5 via the TFTs. A plurality of gate lines and source lines are provided. The plurality of gate lines are provided in parallel in the row direction, and the plurality of source lines are provided in parallel in the column direction. In addition, transparent alignment films 7a and 7b for covering the electrodes 4 and 5 and controlling the alignment of the liquid crystal 6 are uniformly applied.

図１に戻って、前述した後ガラス基板２の突出縁部２０１には、本液晶表示素子を駆動するドライバチップ８がＣＯＧ（Chip On Glass）方式により直接搭載されている。ドライバチップ８の搭載エリアには、駆動制御信号が入力される信号入力端子８０１と、入力された駆動制御信号に基づくゲート信号、ソース信号、共通信号の各信号電圧を出力するための各信号出力端子８０２、８０３、８０４がそれぞれ設置されている。突出縁部２０１の先端部には、外部駆動制御回路基板（不図示）からフレキシブル配線基板等を介して駆動制御信号が供給される接続端子列９が形成され、接続端子列９の各接続端子９０１はドライバチップ８の対応する信号入力端子８０１にそれぞれ配線接続されている。本液晶表示素子は、ドライバチップ８から両電極４、５に電圧を印加することによって、両電極４、５間に介在する液晶６の分子の向きを制御して表示を行う。 Returning to FIG. 1, the driver chip 8 for driving the liquid crystal display element is directly mounted on the protruding edge 201 of the rear glass substrate 2 by the COG (Chip On Glass) method. In the mounting area of the driver chip 8, a signal input terminal 801 to which a drive control signal is input, and signal outputs for outputting each signal voltage of a gate signal, a source signal, and a common signal based on the input drive control signal Terminals 802, 803, and 804 are provided, respectively. A connection terminal row 9 to which a drive control signal is supplied from an external drive control circuit board (not shown) via a flexible wiring board or the like is formed at the distal end portion of the protruding edge portion 201, and each connection terminal of the connection terminal row 9 Reference numerals 901 denote wiring connections to corresponding signal input terminals 801 of the driver chip 8. This liquid crystal display element performs display by controlling the orientation of the molecules of the liquid crystal 6 interposed between the electrodes 4 and 5 by applying a voltage from the driver chip 8 to the electrodes 4 and 5.

シール材３に囲まれた領域外のうち、シール材３の左右両側の枠辺３０４、３０５と後ガラス基板２の対応する各側端との間には、ゲート接続配線の引き回し配設エリアＡg1、Ａg2がそれぞれ確保されている。左右の各配設エリアＡg1、Ａg2には、表示領域Ｄｄの行方向画素間に配設された複数のゲートライン（不図示）を一本置きにそれぞれ左右に分けて延出させたゲート接続配線１１ａ、１１ｂが引き回し配設されている。これらゲート接続配線１１ａ、１１ｂの各引き回し端部は、突出縁部２０１における前記ドライバチップ搭載エリアの対応するゲート信号出力端子８０２に電気接続されている。 Out of the area surrounded by the sealing material 3, between the frame sides 304, 305 on both the left and right sides of the sealing material 3 and the corresponding side edges of the rear glass substrate 2, there is a gate connection wiring routing area Ag1. , Ag2 are secured. In the left and right arrangement areas Ag1, Ag2, a plurality of gate lines (not shown) arranged between the pixels in the row direction of the display area Dd are alternately extended to the left and right. 11a and 11b are arranged around. The routing ends of the gate connection wirings 11a and 11b are electrically connected to the corresponding gate signal output terminal 802 in the driver chip mounting area at the protruding edge 201.

表示領域Ｄｄの列方向画素間に配設された複数のソースライン（不図示）から引き出された各ソース接続配線１２は、前記ドライバチップ搭載エリアの対応するソース信号出力端子８０３に電気接続されている。 Each source connection wiring 12 drawn from a plurality of source lines (not shown) arranged between the pixels in the column direction of the display region Dd is electrically connected to a corresponding source signal output terminal 803 in the driver chip mounting area. Yes.

そして、後ガラス基板２におけるゲート接続配線１１ａ、１１ｂの引き回し配設エリアＡg1、Ａg2のうちの一方の配設エリアＡg2の外側に沿わせて、共通電極接続配線１３が配設されている。この共通電極接続配線１３は、一方の端部がドライバチップ搭載エリアに向けて引き回し配設されて共通信号出力端子８０４に電気接続され、他方の端部はシール材３の奥側枠辺３０１の外側に沿ってノズル部３０３に隣接する位置まで引き回し配設されている。この共通電極接続配線１３の素子奥側に引き回し配設された端部には、図２に示されるように接続パッド部１３１が形成されている。 Then, the common electrode connection wiring 13 is arranged along the outside of one arrangement area Ag2 of the routing arrangement areas Ag1 and Ag2 of the gate connection wirings 11a and 11b in the rear glass substrate 2. One end of the common electrode connection wiring 13 is routed toward the driver chip mounting area and is electrically connected to the common signal output terminal 804, and the other end of the common electrode connection wiring 13 is the back side frame side 301 of the sealing material 3. It is routed to the position adjacent to the nozzle part 303 along the outside. As shown in FIG. 2, a connection pad portion 131 is formed at the end portion of the common electrode connection wiring 13 that is routed to the back side of the element.

図２において、前ガラス基板１の対向面（内面）の前記接続パッド部１３１に対向する位置には、共通電極４の縁部の一部をシール材３の外側に延出させて接続パッド部４０１が配設されている。この接続パッド部４０１と前記接続パッド部１３１とは、基板間導通部材としてのトランスファ電極１４により導通接続されている。 In FIG. 2, a part of the edge of the common electrode 4 is extended to the outside of the sealing material 3 at a position facing the connection pad portion 131 on the facing surface (inner surface) of the front glass substrate 1. 401 is disposed. The connection pad portion 401 and the connection pad portion 131 are conductively connected by a transfer electrode 14 as an inter-substrate conductive member.

トランスファ電極１３の材料としては、シール材３の材料である熱硬化型エポキシ樹脂に導電性粒子を混合したものを良好に適用できる。導電性粒子としては、基板間隙規制部材（スペーサ）として汎用されているミクロパールを金メッキして導電性を付与した金ミクロパールが好適である。 As a material of the transfer electrode 13, a material obtained by mixing conductive particles with a thermosetting epoxy resin that is a material of the sealing material 3 can be suitably applied. As the conductive particles, gold micropearls imparted with conductivity by gold plating micropearls which are widely used as substrate gap regulating members (spacers) are suitable.

前記ノズル部３０３には、セル内に液晶６を注入した後、開口３０２を塞ぐようにして封止材１５が充填されている。これにより、注入された液晶がセル内に封止される。本実施形態では、封止材としてシリコーン系の接着剤が用いられている。 The nozzle portion 303 is filled with the sealing material 15 so as to close the opening 302 after the liquid crystal 6 is injected into the cell. Thereby, the injected liquid crystal is sealed in the cell. In this embodiment, a silicone-based adhesive is used as the sealing material.

ここで、封止材１５は、ノズル部３０３に充填されるだけでなく、隣接配置されているトランスファ電極１４にも該トランスファ電極１４の側面を覆うように塗布されている。この場合、図１、図２に示されるように、トランスファ電極１４は、側面の所定領域が前、後ガラス基板１、２の端面と面一になるように設けられている。封止材１５は、トランスファ電極１４外部に露出された表面のうち特に面一となった当該所定領域が少なくとも確実に被覆されるように、充分な量の封止材１５が被着されている。すなわち、トランスファ電極１４とシール材３に囲まれた例えばノズル部３０３付け根のコーナー部等の外部に開かれていない隙間には、敢えて封止材１５を充填塗布する必要はない。 Here, the sealing material 15 is applied not only to fill the nozzle portion 303 but also to the transfer electrode 14 disposed adjacently so as to cover the side surface of the transfer electrode 14. In this case, as shown in FIGS. 1 and 2, the transfer electrode 14 is provided such that a predetermined region on the side surface is flush with the front and rear end surfaces of the rear glass substrates 1 and 2. The sealing material 15 is coated with a sufficient amount of the sealing material 15 so as to at least reliably cover the predetermined region that is particularly flush among the surfaces exposed to the outside of the transfer electrode 14. . In other words, it is not necessary to dare to fill and apply the sealing material 15 to a gap surrounded by the transfer electrode 14 and the sealing material 3 and not opened to the outside, such as a corner portion at the base of the nozzle portion 303.

上述のように、封止材１５を液晶注入用ノズル部３０３と隣接するトランスファ電極１４の双方を略覆い隠す程度に充分に塗布することにより、液晶注入口を確実に封止できると共に、トランスファ電極１４が外気に含まれる水分等により腐食されることを抑制することができ、液晶表示素子の信頼性が大幅に向上する。 As described above, by sufficiently applying the sealing material 15 so as to substantially cover both the liquid crystal injection nozzle portion 303 and the adjacent transfer electrode 14, the liquid crystal injection port can be reliably sealed and the transfer electrode can be sealed. It can suppress that 14 is corroded by the water | moisture content etc. which are contained in external air, and the reliability of a liquid crystal display element improves significantly.

なお、前ガラス基板１の一対の主面のうち上述の対向面とは反対側の面である外面には、前偏光板１６が貼着され、後ガラス基板２の一対の主面のうち上述の対向面とは反対側の面である外面には、後偏光板１７が貼着されている。 In addition, the front polarizing plate 16 is stuck to the outer surface which is a surface on the opposite side to the above-mentioned opposing surface among the pair of main surfaces of the front glass substrate 1, and the above-mentioned among the pair of main surfaces of the rear glass substrate 2. A rear polarizing plate 17 is attached to the outer surface which is the surface opposite to the opposite surface.

次に、本実施形態の液晶表示素子の製造方法について、主に、図３乃至図５に基づき説明する。 Next, a manufacturing method of the liquid crystal display element of the present embodiment will be described mainly based on FIGS.

図３（ａ）、（ｂ）に示すように、まず、共に複数の液晶表示素子を形成可能な面積を有し且つ透明な第１の親ガラス基板１’と第２の親ガラス基板２’を準備する。第１の親ガラス基板１’には、１個の液晶セルに対応する第１の液晶セル区画（液晶表示素子の形成領域）１０１’つまり前記前ガラス基板１を取得するための区画１０１’を、本例では２行×４列の配置で計８個設定されている。 As shown in FIGS. 3A and 3B, first, a first parent glass substrate 2 ′ and a second parent glass substrate 2 ′ having an area capable of forming a plurality of liquid crystal display elements and being transparent. Prepare. The first parent glass substrate 1 ′ includes a first liquid crystal cell section (liquid crystal display element forming region) 101 ′ corresponding to one liquid crystal cell, that is, a section 101 ′ for obtaining the front glass substrate 1. In this example, a total of eight are set in an arrangement of 2 rows × 4 columns.

一方、第２の親ガラス基板２’には、１個の液晶セルに対応する第２の液晶セル区画２０１’つまり前記後ガラス基板１を取得するための区画２０１’を、第１の親ガラス基板１’と同じ２行×４列の配置で計８個設定されている。 On the other hand, the second parent glass substrate 2 ′ includes a second liquid crystal cell section 201 ′ corresponding to one liquid crystal cell, that is, a section 201 ′ for obtaining the rear glass substrate 1, with the first parent glass. A total of 8 pieces are set in the same arrangement of 2 rows × 4 columns as the substrate 1 ′.

従って、第１の親ガラス基板１’と第２の親ガラス基板２’とは、液晶セル区画１０１’、２０１’が並置される方向の幅寸法が等しく、一対の液晶セル区画１０１’、１０１’及び２０１’、２０１’が縦列配設される長さ寸法については、第２の親ガラス基板２’の方が第１の親ガラス基板１’よりも、後ガラス基板２の突出縁部２０１（図１参照）の突出長さ２個分だけ長い。 Accordingly, the first parent glass substrate 1 ′ and the second parent glass substrate 2 ′ have the same width dimension in the direction in which the liquid crystal cell sections 101 ′ and 201 ′ are juxtaposed, and the pair of liquid crystal cell sections 101 ′ and 101 Regarding the length dimension in which 'and 201', 201 'are arranged in tandem, the protruding edge 201 of the rear glass substrate 2 is more in the second parent glass substrate 2' than in the first parent glass substrate 1 '. It is longer by two protrusion lengths (see FIG. 1).

各液晶セル区画１０１’、２０１’には、前記シール材３が配置されるシール材配置代３’が夫々所定位置に設定されている。ここで、シール材配置代３’は、各親ガラス基板１’、２’において隣接する一対の液晶セル区画１０１’、１０１’及び２０１’、２０１’毎に、各ノズル部を対向させる配置でそれぞれ設定されている。 In each of the liquid crystal cell sections 101 ′ and 201 ′, a sealing material arrangement allowance 3 ′ in which the sealing material 3 is arranged is set at a predetermined position. Here, the sealing material arrangement allowance 3 ′ is an arrangement in which each nozzle portion is opposed to each of a pair of adjacent liquid crystal cell sections 101 ′, 101 ′ and 201 ′, 201 ′ in each parent glass substrate 1 ′, 2 ′. Each is set.

本実施形態では、互いに隣接するように縦列配設された一対の液晶セル区画１０１’、１０１’及び２０１’、２０１’毎に、各シール材配置代３’がそれぞれのノズル部配置代３０３’を対向させる配置で設定されている。 In the present embodiment, for each pair of liquid crystal cell sections 101 ′, 101 ′ and 201 ′, 201 ′ arranged in a row so as to be adjacent to each other, each sealing material arrangement allowance 3 ′ is a nozzle portion arrangement allowance 303 ′. Are set to face each other.

次に、第１の親ガラス基板１’の各第１液晶セル区画１０１’毎に、シール材配置代３’内に一枚膜状の共通電極４（図２参照）を形成し、シール材配置代３’外のノズル部配置代３０３’に隣接する位置まで共通電極４の一部を延出させ、接続パッド部４０１を形成する。そして、上記共通電極４を覆って配向膜７ａを一様に被着形成する。 Next, for each first liquid crystal cell section 101 ′ of the first parent glass substrate 1 ′, a sheet-like common electrode 4 (see FIG. 2) is formed in the sealing material arrangement allowance 3 ′, and the sealing material is formed. A part of the common electrode 4 is extended to a position adjacent to the nozzle portion arrangement allowance 303 ′ outside the arrangement allowance 3 ′ to form a connection pad portion 401. Then, an alignment film 7a is uniformly formed so as to cover the common electrode 4.

これに併行して、第２の親ガラス基板２’の各第２液晶セル区画２０１’毎に、複数の画素電極５（図２参照）とＴＦＴ、及びゲートライン、ソースライン、ゲート接続配線１１ａ、１１ｂ、ソース接続配線１２、共通電極接続配線１３とその接続パッド部１３１、各信号出力端子８０２、８０３、８０４、外部信号電圧供給用の接続端子９０１とその信号入力端子８０１等、各ＴＦＴに電気接続される各種配線及びそれらに対応する各種接続端子を、本例ではフォトリソグラフィーによりパターン形成する。 At the same time, a plurality of pixel electrodes 5 (see FIG. 2), TFTs, and gate lines, source lines, and gate connection wirings 11a are provided for each second liquid crystal cell section 201 ′ of the second parent glass substrate 2 ′. 11b, source connection wiring 12, common electrode connection wiring 13 and connection pad portion 131, signal output terminals 802, 803 and 804, connection terminal 901 for supplying external signal voltage and signal input terminal 801, etc. In this example, various wirings to be electrically connected and various connection terminals corresponding to them are patterned by photolithography.

ここで、上記共通電極接続配線１３とその接続パッド部１３１は、縦列配設された一対の液晶セル区画２０１’、２０１’毎に、互いに対向する位置、つまり両区画の境界線（切離ライン）Ｌｓ1に対し線対称となる位置にそれぞれ配設する。 Here, the common electrode connection wiring 13 and the connection pad portion 131 are located at positions facing each other, that is, the boundary line (separation line) between the two liquid crystal cell sections 201 ′ and 201 ′ arranged in a column. ) Disposed at positions that are line-symmetric with respect to Ls1.

フォトリソグラフィーにより各種電極・配線を形成した後は、それらを覆って配向膜７ｂ（図２参照）を一様に被着形成する。 After forming various electrodes and wirings by photolithography, an alignment film 7b (see FIG. 2) is uniformly deposited so as to cover them.

次に、本実施形態では、第２の親ガラス基板２’における各第２液晶セル区画２０１’内に設定したシール材配置代３’に、シール材３を正確に配置する。この際、シール材３は、縦列配設された一対の液晶セル区画２０１’、２０１’を取り囲む無端枠形状となるように設ける。第２の親ガラス基板２’にシール材３を設ける場合には、ゲート接続配線１１ａ、１１ｂ、ソース接続配線１２、共通電極接続配線及び接続パッド部１３１と、画素電極５との間に配置されるように、且つ接続パッド部１３１に隣接する領域を含むようにシール材３を設けるとよい。また、第１の親ガラス基板１’にシール材３を設ける場合には、接続パッド部４０１と共通電極４との間に配置されるように、且つ接続パッド部４０１に隣接する領域を含むようにシール材３を設けるとよい。いずれの場合も、縦列配設された一対の液晶セル区画２０１’、２０１’の境界線を跨ぐ部分においてすぼんだ瓢箪状となるように、シール材３を形成する。このすぼんだ領域がシール材のうち後述するノズル部３０３に対応する部分である。そして、本実施形態では、シール材のうち当該ノズル部３０３が形成される部分が、接続パッド部１３１又は接続パッド部４０１に隣接する領域に設けている。この配置方法としては、スクリーン印刷法が好適である。 Next, in the present embodiment, the sealing material 3 is accurately arranged in the sealing material arrangement allowance 3 'set in each second liquid crystal cell section 201' in the second parent glass substrate 2 '. At this time, the sealing material 3 is provided so as to have an endless frame shape surrounding the pair of liquid crystal cell sections 201 ′ and 201 ′ arranged in tandem. When the sealing material 3 is provided on the second parent glass substrate 2 ′, the gate connection wirings 11 a and 11 b, the source connection wiring 12, the common electrode connection wiring and connection pad part 131, and the pixel electrode 5 are disposed. The sealing material 3 may be provided so as to include a region adjacent to the connection pad portion 131. Further, when the sealing material 3 is provided on the first parent glass substrate 1 ′, it is disposed between the connection pad portion 401 and the common electrode 4 and includes a region adjacent to the connection pad portion 401. It is good to provide the sealing material 3 in this. In either case, the sealing material 3 is formed so as to have a bowl shape that is sunk in a portion straddling the boundary line between the pair of liquid crystal cell sections 201 ′ and 201 ′ arranged in tandem. This sagged region corresponds to a nozzle portion 303 described later in the sealing material. In the present embodiment, a portion of the sealing material where the nozzle portion 303 is formed is provided in a region adjacent to the connection pad portion 131 or the connection pad portion 401. A screen printing method is suitable as this arrangement method.

この後、縦列配設された一対の液晶セル区画２０１’、２０１’毎に、境界線Ｌｓを挟んで対向する双方の接続パッド部１３１、１３１を一括被覆できる底面を備えた共通トランスファ電極柱１４’（図４参照）を、境界線Ｌｓ1を跨いで配置する。この際、共通トランスファ電極柱１４’は、シール材３のうちノズル部３０３が形成される部分に隣接する領域に設けられることとなる。この設置方法としては、ディスペンサによる塗布方法が好適である。 Thereafter, the common transfer electrode column 14 having a bottom surface capable of covering the connection pad portions 131 and 131 facing each other across the boundary line Ls for each of the pair of liquid crystal cell sections 201 ′ and 201 ′ arranged in tandem. '(See FIG. 4) is arranged across the boundary line Ls1. At this time, the common transfer electrode column 14 ′ is provided in a region adjacent to a portion of the sealing material 3 where the nozzle portion 303 is formed. As this installation method, a coating method using a dispenser is suitable.

なお、上述したシール材３の配置と共通トランスファ電極柱１４’の配置は、実施順序を逆にすることも可能である。また、これらは、第１の親ガラス基板１’側のシール材配置代３’と接続パッド部４０１に配置してもよい。 The arrangement order of the sealing material 3 and the arrangement of the common transfer electrode column 14 ′ described above can be reversed. Further, these may be arranged in the sealing material arrangement allowance 3 ′ and the connection pad portion 401 on the first parent glass substrate 1 ′ side.

共通トランスファ電極柱１４’の配置が終了したら、図４に示されるように、第２の親ガラス基板２’上に第１の親ガラス基板１’を、それぞれの電極形成面を対向させて正確に位置合わせを行いつつ載置する。この際、第１の親ガラス基板１’の各シール材配置代３’に第２の親ガラス基板２’に配置されている対応する各シール材３が正確に配置されように、図示されていないアライメントマークを基準としカメラによる画像認識法等により正確に位置合わせを行う。即ち、第１の親ガラス基板１’と第２の親ガラス基板２’とを、縦列配設された液晶セル区画１０１’と、当該液晶セル区画１０１’に対応する縦列配設された液晶セル区画２０１’とが重なり合うようにして、シール材３を介して接合する。 When the arrangement of the common transfer electrode column 14 ′ is completed, as shown in FIG. 4, the first parent glass substrate 1 ′ is placed on the second parent glass substrate 2 ′ so that the respective electrode formation surfaces face each other. It is mounted while aligning. At this time, the respective sealing materials 3 arranged on the second parent glass substrate 2 ′ are accurately arranged in the sealing material arrangement margins 3 ′ of the first parent glass substrate 1 ′. Accurate alignment is performed by using an image recognition method using a camera with reference to no alignment mark. That is, the first parent glass substrate 1 ′ and the second parent glass substrate 2 ′ are arranged in a liquid crystal cell section 101 ′ arranged in a column, and a liquid crystal cell arranged in a column corresponding to the liquid crystal cell section 101 ′. It joins via the sealing material 3 so that division 201 'may overlap.

この後は、上述のようにして得られた第１、第２の親ガラス基板１’、２’の接合体を加熱しつつ加圧し、基板間間隙（ギャップ）が所定の寸法に縮められた段階で、シール材３と共通トランスファ電極柱１４’の硬化を完了する。 Thereafter, the bonded body of the first and second parent glass substrates 1 ′ and 2 ′ obtained as described above was pressurized while being heated, and the gap (gap) between the substrates was reduced to a predetermined size. At this stage, the curing of the sealing material 3 and the common transfer electrode column 14 ′ is completed.

次に、所定のギャップが確保された第１、第２の親ガラス基板１’、２’の接合体を複数の液晶セルが幅方向に並ぶ短冊体に切離する。本実施形態では、４個の液晶セルがセル幅方向（マトリックスの行方向）に並置されているから、行方向の切離ラインＬｓ1に沿って切断する。この切離ラインＬｓ1は、前述した共通トランスファ電極柱１４’が跨ぐ縦列対をなす液晶セル区画の境界線でもある。この場合の切断方法としては、スクライブ−ブレイク法を用いることができる。即ち、まず、スクライバを用いて切離ラインＬｓ１に沿って溝を形成し、次いで、第１、第２の親ガラス基板１’、２’の接合体を裏返して、金属製の棒状の部材によって当該切離ラインＬｓ１に沿って応力を印加することにより、当該接合体を切断する。 Next, the joined body of the first and second parent glass substrates 1 ′ and 2 ′ in which a predetermined gap is secured is cut into strips in which a plurality of liquid crystal cells are arranged in the width direction. In the present embodiment, since four liquid crystal cells are juxtaposed in the cell width direction (matrix row direction), they are cut along the separation line Ls1 in the row direction. The separation line Ls1 is also a boundary line of the liquid crystal cell section forming a pair of columns across the common transfer electrode column 14 '. As a cutting method in this case, a scribe-break method can be used. That is, first, a groove is formed along the separation line Ls1 using a scriber, and then the joined body of the first and second parent glass substrates 1 ′ and 2 ′ is turned over, and a metal rod-like member is used. The bonded body is cut by applying stress along the separation line Ls1.

第１、第２親ガラス基板１’、２’の接合体を行方向の切離ラインＬｓ1に沿って切断すると、図５に示すように、４個の液晶セルの各ノズル部３０３が切断端面側に揃って開いた２個のセル短冊体（液晶表示素子接合体）が得られる。得られた２個のセル短冊体は切離ラインＬｓ１に沿った外周縁を有し、当該外周縁上において、シール材３に開口が形成されている。この切断工程において、切離ラインＬｓ1を跨ぐ４個の共通トランスファ電極柱１４’も約半分にそれぞれ分断され、個々の液晶セル毎に配置された８個のトランスファ電極１４となる。得られた８個のトランスファ電極１４の側面のうち所定の領域は、それぞれ第１、第２親ガラス基板１’、２’を切断して形成された端面と面一になっている。 When the joined body of the first and second parent glass substrates 1 ′ and 2 ′ is cut along the separation line Ls1 in the row direction, as shown in FIG. Two cell strips (liquid crystal display element assembly) that are aligned and open on the side are obtained. The obtained two cell strips have an outer peripheral edge along the separation line Ls1, and an opening is formed in the sealing material 3 on the outer peripheral edge. In this cutting process, the four common transfer electrode columns 14 'straddling the separation line Ls1 are also divided into about half, thereby forming eight transfer electrodes 14 arranged for each liquid crystal cell. Predetermined regions of the side surfaces of the obtained eight transfer electrodes 14 are flush with the end surfaces formed by cutting the first and second parent glass substrates 1 ′ and 2 ′, respectively.

次に、４個の液晶セルが横列に並ぶセル短冊体毎に、各ノズル部３０３が並ぶ切断端面側を液晶溜に浸漬させ、従来の真空注入方法により、各液晶セル内に液晶を一括注入する。 Next, for each cell strip in which four liquid crystal cells are arranged in a row, the cut end face side where each nozzle part 303 is arranged is immersed in a liquid crystal reservoir, and liquid crystals are injected into each liquid crystal cell by a conventional vacuum injection method. To do.

液晶の注入が完了したら、各ノズル部３０３に開口３０２を塞ぐようにして封止材１５を充填すると共に、各ノズル部３０３に隣接配置されている各トランスファ電極１４にも該トランスファ電極１４の側面を覆うように封止材１５を塗布する。これにより、トランスファ電極１４の側面のうち、前、後ガラス基板１、２の端面に沿った部分が外気に晒されないように被覆することができる。特に、トランスファ電極１４の側面のうち上述の所定の領域、即ち第１、第２親ガラス基板１’、２’を切断して形成された端面と面一になった領域を少なくとも覆うように、封止材１５を形成しておく。 When the injection of the liquid crystal is completed, each nozzle portion 303 is filled with the sealing material 15 so as to close the opening 302, and each transfer electrode 14 disposed adjacent to each nozzle portion 303 is also side-faced to the transfer electrode 14. The sealing material 15 is applied so as to cover the surface. Thereby, it can coat | cover so that the part along the end surface of the front and back glass substrates 1 and 2 among the side surfaces of the transfer electrode 14 may not be exposed to external air. In particular, so as to cover at least a predetermined region of the side surface of the transfer electrode 14, that is, a region that is flush with an end surface formed by cutting the first and second parent glass substrates 1 ′ and 2 ′. A sealing material 15 is formed.

塗布した封止材１５を硬化させた後、セル短冊体を隣り合う液晶セルの境界線となっている切離ラインＬｓ2に沿って切断する。この後、切離された液晶セル毎に前、後偏光板１６、１７等の光学シートを貼着することにより、図１に示す本実施形態の液晶表示素子が得られる。 After the applied sealing material 15 is cured, the cell strip is cut along a separation line Ls2 that is a boundary line between adjacent liquid crystal cells. Thereafter, the liquid crystal display element of the present embodiment shown in FIG. 1 is obtained by attaching optical sheets such as the front and rear polarizing plates 16 and 17 to each separated liquid crystal cell.

以上のように、本実施形態の液晶表示素子では、トランスファ電極１４が矩形枠状シール材３の外部に突出させたノズル部３０３に隣接させて設置されているから、トランスファ電極１４を設置するための専用の縁部が不要となり、その分、外形寸法を小さくでき、且つ、注入された液晶を封止するために液晶注入口のノズル部３０３に充填する封止材１５を隣設されているトランスファ電極１４にも一括塗布し、トランスファ電極１４が外気に晒されない構造としたから、トランスファ電極１４の水分等による腐食を抑制することができる。その結果、液晶表示素子の狭額縁化による小型化が促進されるとともに、トランスファ電極１４の腐食による断線等の経時劣化が抑制され液晶表示素子としての信頼性が向上する。 As described above, in the liquid crystal display element of the present embodiment, the transfer electrode 14 is disposed adjacent to the nozzle portion 303 that protrudes outside the rectangular frame-shaped sealing material 3, so that the transfer electrode 14 is disposed. In order to seal the injected liquid crystal, a sealing material 15 that fills the nozzle portion 303 of the liquid crystal injection port is provided next to the liquid crystal injection port. Since the transfer electrode 14 is applied to the transfer electrode 14 so that the transfer electrode 14 is not exposed to the outside air, corrosion of the transfer electrode 14 due to moisture or the like can be suppressed. As a result, downsizing of the liquid crystal display element due to narrowing of the frame is promoted, and deterioration over time such as disconnection due to corrosion of the transfer electrode 14 is suppressed, and the reliability as the liquid crystal display element is improved.

また、本実施形態の液晶表示素子の製造方法では、第２の親ガラス基板２’に設定されている一対の縦列方向に隣接する液晶セル区画２０１’、２０１’毎に、各矩形枠状シール材３を凸設されているそれぞれのノズル部３０３を対向させる配置で設置するから、各ノズル部３０３に隣設するそれぞれのトランスファ電極１４配設位置に、対をなす各液晶セル区画２０１’、２０１’を区切る切離ラインＬｓ1を跨いで共通のトランスファ電極柱１４’を配置でき、この後、切離ラインＬｓ1に沿って切断するたけで、トランスファ電極１４がノズル部３０３に隣設された所望の液晶セルが得られる。 Further, in the method for manufacturing a liquid crystal display element of the present embodiment, each rectangular frame-shaped seal is provided for each of the liquid crystal cell sections 201 ′ and 201 ′ adjacent to the pair of columns set in the second parent glass substrate 2 ′. Since the material 3 is disposed in such a manner that the protruding nozzle portions 303 are opposed to each other, each liquid crystal cell section 201 ′ that makes a pair at each transfer electrode 14 placement position adjacent to each nozzle portion 303, A common transfer electrode column 14 ′ can be disposed across the separation line Ls 1 that divides 201 ′, and then the transfer electrode 14 is provided adjacent to the nozzle portion 303 only by cutting along the separation line Ls 1. The liquid crystal cell is obtained.

これにより、各液晶セルにノズル部３０３から液晶を注入した後に封止材１５をノズル部３０３に充填する際に同時に隣設されているトランスファ電極１４も封止材１５で被覆することができる。従って、各液晶表示素子にトランスファ電極１４を個々に設置し封止材ではない専用の保護膜を被覆する場合に比べ、製造作業工数が大幅に低減される。 Thereby, when the sealing material 15 is filled into the nozzle portion 303 after injecting liquid crystal from the nozzle portion 303 into each liquid crystal cell, the adjacent transfer electrode 14 can be covered with the sealing material 15 at the same time. Therefore, compared with the case where the transfer electrode 14 is individually installed on each liquid crystal display element and a dedicated protective film which is not a sealing material is coated, the number of manufacturing work steps is greatly reduced.

加えて、セル切離工程において、スクライブ−ブレイク法によって、共通トランスファ電極１４’を第１、第２の親ガラス基板１’、２’とともに一括切断すると、切離ラインＬｓ１上のうち、共通トランスファ電極１４’が形成された領域においては残りの領域と比べて印加される応力が変化してしまう。このため、切断によって得られた２個のセル短冊体の切断端面に、当該端面から突出した形状を有するバリや、逆に当該端面から窪んだ形状を有する欠けといった異形部が形成されるおそれがある。しかしながら、封止材１５をトランスファ電極１４だけでなくその近傍の切断端面も被覆できるように封止材１５を充分に塗布することにより、ガラス切断面にバリや欠けといった異形部が形成された場合も、封止材１５によりこの異形部を被覆でき、液晶表示素子の品質がより向上する。 In addition, when the common transfer electrode 14 ′ is cut together with the first and second parent glass substrates 1 ′ and 2 ′ by the scribe-break method in the cell cutting step, the common transfer electrode on the cutting line Ls1 is cut. In the region where the electrode 14 ′ is formed, the applied stress changes compared to the remaining region. For this reason, there is a possibility that a deformed part such as a burr having a shape protruding from the end face or a chip having a shape recessed from the end face may be formed on the cut end face of the two cell strips obtained by cutting. is there. However, when the sealing material 15 is sufficiently coated so that the sealing material 15 can cover not only the transfer electrode 14 but also the cut end surface in the vicinity thereof, a deformed portion such as a burr or chip is formed on the glass cut surface. However, the deformed portion can be covered with the sealing material 15, and the quality of the liquid crystal display element is further improved.

なお、本発明は上記の実施形態等に限定されるものではなく、本発明の技術的範囲において種々の変形が可能であることは勿論である。 In addition, this invention is not limited to said embodiment etc., Of course, various deformation | transformation are possible in the technical scope of this invention.

例えば、上記実施形態ではトランスファ電極１４が各液晶表示素子に１個設けられているが、これに限らず、１個の液晶表示素子に複数個のトランスファ電極を設ける場合にも、本発明は有効に適用される。また、液晶注入口も１個に限らず、複数個の液晶注入口が設けられた液晶表示素子にも、本発明は有効に適用される。 For example, in the above-described embodiment, one transfer electrode 14 is provided for each liquid crystal display element. However, the present invention is not limited to this, and the present invention is effective when a plurality of transfer electrodes are provided for one liquid crystal display element. Applies to Further, the present invention is effectively applied to a liquid crystal display element provided with a plurality of liquid crystal injection ports as well as a single liquid crystal injection port.

更に、上記実施形態では、ドライバがガラス基板に直接搭載されたＣＯＧ方式が採用されているが、ドライバを外部回路基板に設けてフレキシブル配線基板で導通接合する方式の液晶表示素子とその製造方法に対しても、本発明は有効である。 Further, in the above embodiment, the COG method in which the driver is directly mounted on the glass substrate is adopted. However, the liquid crystal display element of the method in which the driver is provided on the external circuit substrate and is conductively connected by the flexible wiring substrate and the manufacturing method thereof are used. In contrast, the present invention is effective.

１前ガラス基板
２後ガラス基板
３シール材
３０１奥側枠辺
３０２開口
３０３ノズル部
３０４、３０５両側枠辺
４共通電極
４０１接続パッド部
５画素電極
６液晶
７ａ、７ｂ配向膜
８ドライバチップ
８０１入力端子
８０２、８０３、８０４出力端子
９接続端子列
９０１接続端子
１１ａ、１１ｂゲート接続配線
１２ソース接続配線
１３共通電極接続配線
１３１接続パッド部
１４トランスファ電極
１５封止材
１６、１７前、後偏光板
１’ 第１の親ガラス基板
１０１’ 液晶セル区画
２’ 第２の親ガラス基板
２０１’ 液晶セル区画
３’ シール材配置代
１４’ 共通トランスファ電極柱
Ｌｓ1、Ｌｓ2 切離線 DESCRIPTION OF SYMBOLS 1 Front glass substrate 2 Rear glass substrate 3 Sealing material 301 Back side frame side 302 Opening 303 Nozzle part 304,305 Both sides frame side 4 Common electrode 401 Connection pad part 5 Pixel electrode 6 Liquid crystal 7a, 7b Alignment film 8 Driver chip 801 Input terminal 802, 803, 804 Output terminal 9 Connection terminal row 901 Connection terminal 11a, 11b Gate connection wiring 12 Source connection wiring 13 Common electrode connection wiring 131 Connection pad portion 14 Transfer electrode 15 Sealing material 16, 17 Front, rear polarizing plate 1 ′ 1st parent glass substrate 101 'liquid crystal cell section 2' second parent glass substrate 201 'liquid crystal cell section 3' seal material arrangement allowance 14 'common transfer electrode pillar Ls1, Ls2 disconnect line

Claims

A first substrate having a first electrode formed on one main surface, and a second substrate having a second electrode formed on one main surface, the one main surface facing each other and a frame-shaped seal A liquid crystal display element in which liquid crystal is sealed in a space surrounded by the first substrate, the second substrate, and the sealing material,
In the frame-shaped sealing material, an opening is formed at a predetermined location,
The first substrate is provided with a first connection pad electrically connected to the first electrode outside the region surrounded by the sealing material and adjacent to the opening.
The second substrate is provided with a first electrode connection wiring that is conductively connected to the first electrode outside the region surrounded by the sealing material, and in the region outside the region and adjacent to the opening, A second connection pad electrically connected to the first electrode connection wiring is provided;
An inter-substrate conducting member that conducts electrical connection between the first connection pad and the second connection pad;
A liquid crystal display element, wherein a sealing material for sealing the opening is provided so as to cover a side surface of the inter-substrate conducting member.

The inter-substrate conducting member is provided such that a predetermined region on a side surface is flush with end surfaces of the first substrate and the second substrate, and the sealing material is provided so as to cover the predetermined region on the side surface. The liquid crystal display element according to claim 1, wherein the liquid crystal display element is a liquid crystal display element.

The liquid crystal display element according to claim 1, wherein the sealing material is provided so as to cover a protruding portion protruding from the end face of the first substrate and the second substrate.

The liquid crystal display element according to any one of claims 1 to 3, wherein the opening of the sealing material is formed on an outer peripheral edge of the first substrate or the second substrate.

The second substrate is provided with a second electrode connection wiring connected to the second electrode outside the region surrounded by the sealing material,
An output terminal that is an end of each of the first electrode connection wiring and the second electrode connection wiring is provided in a non-overlapping region arranged so as not to overlap the first substrate in the second substrate, 5. The liquid crystal display element according to claim 1, wherein a driver for applying a voltage to one electrode and the second electrode is mounted in a conductive connection with the output terminal. 6.

One of the first electrode and the second electrode is a common electrode formed in a region surrounded by the sealing material on the one main surface of the substrate on which the one electrode is provided, The other electrode is a plurality of pixel electrodes formed in a region surrounded by the sealing material on the one main surface of the substrate on which the other electrode is provided.
The other connection wiring connected to the other electrode of the first electrode connection wiring and the second connection wiring includes a gate line and a source line connected to the thin film transistor connected to the pixel electrode. The liquid crystal display element according to any one of claims 1 to 5.

A first polarizing plate is provided on the other main surface of the first substrate; a second polarizing plate is provided on the other main surface of the second substrate;
Display is performed by controlling the orientation of the molecules of the liquid crystal interposed between the first electrode and the second electrode by applying a voltage from the driver to the first electrode and the second electrode. The liquid crystal display element according to claim 1, wherein the liquid crystal display element is a liquid crystal display element.

A first parent substrate having an area where a plurality of liquid crystal display elements can be formed, and a first connection pad formed on the first electrode and conductively connected to the first electrode in a formation region of each liquid crystal display element; The liquid crystal display element has an area where the liquid crystal display element can be formed, and a second electrode is formed in a region where each liquid crystal display element is formed, a second electrode connection wiring electrically connected to the second electrode, and insulated from the second electrode connection wiring Preparing a first electrode connection wiring and a second parent substrate on which a second connection pad electrically connected to the first electrode connection wiring is formed;
An endless frame-shaped seal surrounding two adjacent formation regions among the formation regions of the liquid crystal display elements of the first parent substrate or the second parent substrate on the first parent substrate or the second parent substrate. Either the material is between the first connection pad and the first electrode, or between the second connection pad, the first electrode connection wiring and the second electrode connection wiring and the second electrode. A step of being arranged so that
A step of providing an inter-substrate conductive member conductively connected to the first connection pad or the second connection pad on the first parent substrate or the second parent substrate so as to straddle a boundary line between the two formation regions. When,
The first parent substrate and the second parent substrate are joined via the sealing material so that the surfaces on which the first electrode and the second electrode are formed face each other and the formation regions overlap each other. And a process of
By cutting the first mother substrate and the second mother substrate along a boundary line between the two formation regions, thereby forming a plurality of liquid crystal display element assemblies having outer peripheral edges along the boundary line, The sealing material and the inter-substrate conducting member are divided along the boundary line, and the inter-substrate conducting member is formed on each formed liquid crystal display element assembly, and on the outer peripheral edge of each liquid crystal display element assembly Forming an opening in the sealing material in
Injecting liquid crystal into a region surrounded by the sealing material of the liquid crystal display element assembly through the opening;
And a step of providing a sealing material so as to close the opening and cover a side surface of the inter-substrate conducting member.

The step of cutting the parent substrate includes providing the inter-substrate conducting member such that a predetermined region on the side surface thereof is flush with the end surfaces of the first substrate and the second substrate,
The method for manufacturing a liquid crystal display element according to claim 8, wherein the step of providing the sealing material includes providing the sealing material so as to cover the predetermined region on the side surface of the inter-substrate conducting member. .

The step of providing the sealing material covers the deformed portion when the deformed portion protruding or recessed from the end surfaces of the first substrate and the second substrate is formed in the step of cutting the parent substrate. The method for manufacturing a liquid crystal display element according to claim 8, comprising providing the sealing material as described above.

The process of providing the said sealing material provides the said sealing material so that the area | region adjacent to the said 1st connection pad or the said 2nd connection pad may be included. A method for manufacturing a liquid crystal display element.