WO2000031580A1 - Procede de production d'un affichage a cristaux liquides, substrat destine a ce dispositif et dispositif ainsi forme - Google Patents

Procede de production d'un affichage a cristaux liquides, substrat destine a ce dispositif et dispositif ainsi forme Download PDF

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Publication number
WO2000031580A1
WO2000031580A1 PCT/JP1999/006545 JP9906545W WO0031580A1 WO 2000031580 A1 WO2000031580 A1 WO 2000031580A1 JP 9906545 W JP9906545 W JP 9906545W WO 0031580 A1 WO0031580 A1 WO 0031580A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
electrodes
liquid crystal
display device
crystal display
Prior art date
Application number
PCT/JP1999/006545
Other languages
English (en)
Japanese (ja)
Inventor
Kazuya Yoshimura
Makoto Nakahara
Takatoshi Kira
Daisuke Ikesugi
Akihiko Tateno
Masaki Ban
Hiroshi Murata
Masaaki Kubo
Original Assignee
Sharp Kabushiki Kaisha
Sekisui Chemical Co., Ltd.
Nisshin Engineering Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Kabushiki Kaisha, Sekisui Chemical Co., Ltd., Nisshin Engineering Co., Ltd. filed Critical Sharp Kabushiki Kaisha
Priority to KR1020017006443A priority Critical patent/KR20010090850A/ko
Priority to JP2000584339A priority patent/JP3494993B2/ja
Publication of WO2000031580A1 publication Critical patent/WO2000031580A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the present invention relates to a method for manufacturing a liquid crystal display device in which a spacer is selectively arranged by applying a voltage to an electrode, a substrate for a liquid crystal display device, and a liquid crystal display device.
  • a liquid crystal display device in which a spacer is arranged between a pair of insulating substrates on which electrodes are formed in order to maintain a constant distance between the pair of insulating substrates is known. Since the distance between this pair of green substrates, that is, the thickness of the liquid crystal layer, affects the light transmittance, good display must be performed unless it is kept constant over the entire display area of the liquid crystal display device. Can not. For this reason, conventionally, a spacer such as glass fiber or a spherical plastic bead is disposed between a pair of insulating substrates so that the thickness of the liquid crystal layer is kept constant over the entire display area. .
  • spacers are sprayed out of the nozzle together with a compressed gas after forming an alignment film and sprayed (dry spraying), or mixed with a volatile liquid to spray the liquid. And sprayed (wet spray) to be evenly distributed on the alignment film.
  • a pair of insulating substrates is attached to each other, and a liquid crystal such as a nematic liquid crystal is filled between the pair of substrates in a state where the spacer is held between the pair of insulating substrates.
  • a spacer is arranged on the pixel electrode in the display area, light leaks from the spacer, which substantially reduces the aperture ratio, causing a problem such as uneven display or reduced contrast. Had occurred.
  • spacer spraying technology for controlling the cell thickness in order to improve the display quality of liquid crystal display devices.
  • JP-A-3-293333 and JP-A-4-204417 disclose that an electrode on one of the insulating substrates is charged, By spraying a charged spacer on an insulating substrate, A method of selectively arranging spacers in an area has been proposed. When a spacer is sprayed on a substrate for a liquid crystal display device using these methods, an appropriate repulsive force acts on the spacer in the display electrode region, and a gap where no electrode exists, that is, the spacer is formed between the electrodes. They are arranged evenly.
  • a transparent electrode pattern for display is formed on a substrate for liquid crystal display device that is arranged to face, and the transparent material for display is formed around the same pattern as the transparent electrode for display.
  • Alignment mark for connecting electrode to TCP, alignment mark for alignment film and seal printing, alignment mark for bonding a pair of substrates for liquid crystal display, and presence / absence of transparent electrode for display A dummy electrode or the like was formed to prevent a difference in cell thickness due to this.
  • the electrode pattern formed on such an insulating substrate for a liquid crystal display device has a stripe shape in which an antistatic electrode 28 is connected to the insulating substrate 1.
  • the display electrode 3, the dummy electrode 21 for adjusting the cell thickness, the functional electrode 27a, the functional electrode 27b, and the functional electrode 27c were formed.
  • the dummy electrode 21, the functional electrode 27 a, the functional electrode 27 b, and the functional electrode 27 c are electrically floating (open circuit), respectively. No one was formed except for the necessary parts.
  • An object of the present invention is to provide a method of manufacturing a liquid crystal display device having high display uniformity, a substrate for a liquid crystal display device, and a liquid crystal display device using the same.
  • a voltage having the same polarity as the charging polarity of the spacer is applied to a plurality of electrodes formed on a substrate, and the repulsive force acting on the spacer is used to spray the spacer.
  • This is a method for manufacturing a liquid crystal display device, which is made substantially uniform with the electric field of a part.
  • the present invention is also a substrate for a liquid crystal display device used in the method for manufacturing a liquid crystal display device.
  • the present invention is also a liquid crystal display device manufactured by the above-described method for manufacturing a liquid crystal display device.
  • FIG. 1 is a cross-sectional view of a spreader spraying apparatus used in an embodiment of the present invention.
  • FIG. 2 is a plan view showing the insulating substrate according to the embodiment of the present invention.
  • FIG. 3 is an enlarged plan view showing a lower left electrode on the insulating substrate in FIG. 2 according to the embodiment of the present invention.
  • FIG. 4 is an enlarged plan view showing the functional electrode 27a on the insulating substrate according to the embodiment of the present invention in FIG.
  • FIG. 5 is an enlarged plan view showing the functional electrode 27c on the insulating substrate according to the embodiment of the present invention in FIG.
  • FIG. 6 is a conceptual diagram for explaining a method of arranging a spacer by an electric field according to the embodiment of the present invention.
  • FIG. 7 is a sectional view showing the liquid crystal display device according to the embodiment of the present invention.
  • FIG. 8 is a schematic configuration diagram of the liquid crystal display device according to the embodiment of the present invention.
  • FIG. 9 is a plan view showing a conventional insulating substrate.
  • FIG. 10 is an enlarged plan view showing the lower left electrode on the conventional insulating substrate in FIG.
  • FIG. 11 is a plan view showing the functional electrode 27 a on the conventional insulating substrate in FIG. It is an enlarged view.
  • FIG. 12 is an enlarged plan view showing the functional electrode 27a on the conventional insulating substrate in FIG. Explanation of reference numerals
  • the present invention comprises applying a voltage having the same polarity as the charged polarity of a spacer to a plurality of electrodes formed on a substrate, and spraying the spacer by using a repulsive force acting on the spacer.
  • a method for manufacturing a liquid crystal display device wherein the spraying of the stirrer makes the electric field near an electrode region formed of at least a plurality of electrodes on the substrate substantially uniform with the electric field at the center of the electrode region formed of the plurality of electrodes.
  • the vicinity of the electrode region composed of a plurality of electrodes on the substrate is not particularly limited.
  • it refers to the inside of the region including the dividing line to be the liquid crystal display device.
  • the range may be determined in a timely manner so that it can be maintained.
  • the range of the uniformity of the electric field may be appropriately determined in accordance with the specifications so that the uniformity of the cell thickness can be maintained. Note that the present invention can be applied whether the electric field is an attractive field or a combined field of repulsive force and attractive force.
  • the substrate examples include a glass substrate, a resin substrate, and a metal substrate having a plurality of electrodes on the surface thereof.
  • a metal substrate it is necessary to provide an insulating layer on the metal substrate so that the electrodes formed on the surface are not short-circuited.
  • the above-mentioned electrode is not particularly limited, and examples thereof include a transparent electrode and the like, and a transparent electrode having a linear shape can be used.
  • a striped electrode formed by arranging linear transparent electrodes in parallel can be formed on a substrate.
  • Striped electrodes are used as so-called display electrodes in liquid crystal display devices.
  • the electrode region including the plurality of electrodes is a region forming an electrode group including a plurality of electrodes. When the plurality of electrodes are used as display electrodes, the electrode region is a display electrode region.
  • the spacer is not particularly limited.
  • the sprayer may be sprayed by either a dry method or a wet method. In the above wet spraying, the spacer is dispersed and dispersed in a mixed solvent such as water and alcohol, but even in this case, the spacer is charged, so that the effect of the present invention is not impaired.
  • dry spraying is preferred because the larger the charge amount of the spacer, the better the placement accuracy.
  • a dummy electrode is provided without a gap in the vicinity of an electrode region including at least a plurality of electrodes on a substrate, and a voltage having the same polarity as the electrode including the plurality of electrodes is applied to the dummy electrode.
  • the above-mentioned dummy electrode includes a conductive electrode arranged and formed outside an electrode region (electrode group) including a plurality of electrodes. At this time, the dummy electrode is preferably formed in a strip shape or a block shape. In the case where a dummy electrode having a cylindrical shape is provided, a spacer is not disposed at that portion due to repulsion, and it becomes difficult to control the cell thickness in the vicinity of an electrode region including a plurality of electrodes.
  • the dummy electrode is provided at right angles to the plurality of electrodes, and at Z or parallel to the plurality of electrodes.
  • the linear arrangement (effective display area) and the bent part (leading part) of the electrodes reduce the arrangement amount of the spacer. Variations can be avoided, and the number of spacers scattered in the effective display area can be made equal to the number of spacers scattered in the dummy electrode area. It is possible to arrange the spacer uniformly with the region.
  • the lead portion of the electrode is also linear. However, at present, it is indispensable to provide a bent part in the electrode for TCP connection.
  • a functional electrode is provided near an electrode region including at least a plurality of electrodes on a substrate, and a voltage having the same polarity as the plurality of electrodes is applied to the functional electrode.
  • the functional electrode is not particularly limited, and examples thereof include an alignment mark for TCP connection, an alignment mark for division, an identification mark, an alignment mark for exposure, and an alignment mark for bonding. At this time, if the inside of the alignment mark is hollow, it is preferable to form a dummy electrode in that part as well.
  • At least one dummy electrode is provided in parallel with the plurality of electrodes outside an electrode region including a plurality of electrodes on a substrate, and a voltage having the same polarity as the plurality of electrodes is applied to the dummy electrode. Is preferred.
  • the number of dummy electrodes provided in parallel is preferably as large as possible, but may be determined appropriately according to design rules.
  • an electrode region including at least a plurality of electrodes on the substrate and an electrode in the vicinity of the electrode region including the plurality of electrodes have substantially the same electrode width.
  • the voltages applied to the electrodes and the plurality of electrodes in the vicinity of the electrode region including at least the plurality of electrodes on the substrate are the same.
  • a common conduction is provided to an outer peripheral portion near an electrode region including a plurality of electrodes.
  • the wires are formed of the same material as the plurality of electrodes, and a voltage is applied to each of the electrodes.
  • a liquid crystal display device can be manufactured with good cost performance and workability.
  • the connection between the common conductive line and the plurality of electrodes is on the connection side of the plurality of electrodes with the external circuit, and that the other is connected to the inside of the sealing resin.
  • connection with the external circuit is protected from electrolytic corrosion, and the other is not extended outside the seal resin. Does not occur.
  • the other part of the connection to the external circuit is connected to the common conductive line, it is necessary to protect the part from electrolytic corrosion after the substrate is cut.
  • the present invention is also a substrate for a liquid crystal display device used in the method for manufacturing a liquid crystal display device.
  • the present invention is also a liquid crystal display device manufactured by the above-described method for manufacturing a liquid crystal display device.
  • FIG. 1 is a schematic diagram showing a spacer spraying apparatus used in an embodiment of the present invention.
  • a nozzle 11a for spraying and spraying the charged spacer 8 is provided at the upper end of a clean container 10 that is closed or close to it.
  • a supply device (not shown) for supplying a spacer 8 and nitrogen gas is connected to the nozzle 11 a via a pipe 17.
  • An insulating substrate 1 made of glass or the like on which the display electrode 3 is formed is disposed below the container 10, and a conducting wire 18 for applying a voltage to the display electrode 3 to form an electric field is provided. ing. Instead of applying a voltage to the display electrode 3 to form an electric field, the electric field may be formed by the electrode 15 provided in the spacer spraying device.
  • a method of applying a voltage to the spacer 8 by applying a voltage to a charger (not shown) provided in the spraying device, or a method of charging the spacer with stainless steel And the like, and a method of charging by friction through a metal tube or a resin tube is known, and any of these methods may be used.
  • FIGS. 2 to 5 are schematic diagrams showing an electrode pattern according to the present invention.
  • a striped display electrode 3 and a dummy electrode 2 are connected on the insulating substrate 1 so that a voltage is applied from a common conducting line 26 formed so as to surround the insulating substrate 1.
  • a common conductive line is provided as a means for applying a voltage to each electrode.
  • a voltage may be directly applied to each electrode using a probe pin or the like, A charging method may be used.
  • the dummy electrodes 21a and 21b are electrodes provided without a gap to form an electric field in a region other than the display electrode, and in particular, the dummy electrode 2 lb is a continuous electrode in the display electrode region. In order to form the display electrodes, they are provided in parallel with the display electrodes in the same pattern as the display electrodes.
  • the functional electrode 27a is an alignment mark for TCP connection
  • the functional electrode 27b is an alignment mark for exposure and bonding
  • the functional electrode 27c is an alignment mark for cutting.
  • the dummy electrode and the functional electrode are simultaneously produced during the display electrode exposure and etching step.
  • the vicinity of the display electrode region on the insulating substrate is designed so as to have a range sufficiently including the functional electrode 27c, and is defined as a region surrounded by the common conductive line. I have.
  • a dummy electrode 21 a to which a voltage of the same polarity as that of the display electrode 3 is applied is provided without a gap so that the electric field is the same as that in the center of the display electrode area.
  • the dummy electrode 21a is formed so as to be orthogonal to the display electrode 3. 3
  • a voltage having the same polarity as that of the display electrode 3 is also applied to the functional electrodes 27a, 27b, and 27c.
  • a dummy electrode 21b is provided outside the display electrode 3 in parallel with the display electrode 3 so that a voltage of the same polarity as the display electrode 3 is applied to the dummy electrode 21b.
  • ⁇ The width between the electrodes of the display area and the electrodes in the vicinity of the display electrode area are made substantially the same, and 6The voltage applied to the display electrode 3 and various other 7The common conductive line 26 is formed of the same material as the display electrode 3, Connection between the through conducting line 2 6 and the display electrodes 3, a connecting portion side of an external circuit of the display electrode 3, and the other that has a limit of the sealing resin inside.
  • the charged spacer is moved and arranged in the valley of the repulsive force.
  • the present invention as described above, at least in the region including the vicinity of the display electrode region on the insulating substrate, Since a similar electric field is formed, It becomes possible to arrange a sensor.
  • the solid line in FIG. 6 schematically shows the magnitude of the repulsive force applied to the spacer, and the magnitude of the repulsive force acting on the spacer is indicated by a semicircular “convex upward”. .
  • a simple matrix type liquid crystal display device is used.
  • the present invention is not limited to a simple matrix type liquid crystal display device, such as a ferroelectric liquid crystal display device or a TFT type liquid crystal display device. Naturally, it can also be used in liquid crystal display devices.
  • Example 1
  • one of the green substrates 1 has a black matrix 5 which is a light shielding film.
  • a color filter 4 made of RGB and formed, and an overcoat 6 for protecting the color filter 4 were formed.
  • an electrode pattern made of ITO having a thickness of 300 nm was formed, and an insulating film 23 was formed. In some cases, the insulating film 23 need not be formed. Further, an alignment film 9 made of a polyimide resin was formed and subjected to an alignment treatment.
  • the electrode pattern as shown in FIGS. 3 to 5, stripe-shaped display electrodes 3 are formed in the effective display area with a width of 270 / Xm and an interval of 30 / m. 1 a is formed with a line width of 35 m and a line interval of 35 / m without gaps, and a dummy electrode 2 1 b is displayed. Dummy electrodes 21a were arranged as much as possible around 7a, 27b and 27c. Further, an annular dummy electrode 21a was also arranged around the functional electrode 27b.
  • the spacers are not aggregated and arranged, and the display electrode portion, the dummy electrode portion, They were evenly arranged on the functional electrode part.
  • a sealing material 24 was applied to the insulating substrate 1 on which the color filter 4 was formed by a screen printing method. Glass beads serving as spacers 25 in the seal were mixed into the seal material 24.
  • the pair of insulating substrates 1 are bonded together, heated and pressurized at 180 ° (: 0.8 kg / cm 2) , and after-baked at 150 ° C.
  • the liquid crystal was cut along the cutting line to separate the parts, and then liquid crystal 7 was injected to produce a liquid crystal display device (shown in FIGS. 7 and 8) in which a pair of insulating substrates were bonded.
  • the spacers are uniformly distributed on the surface of the liquid crystal display device, have a uniform cell thickness, and no spacer is disposed on the display electrode.
  • Comparative example 1 had high contrast and high quality display characteristics.
  • a liquid crystal display device was manufactured in the same manner as in the example except that the conventional liquid crystal display device substrate shown in FIGS. 9 to 12 was used. As a result, the spacer is concentrated on the dummy electrode part, the functional electrode part, and the area where the electrode is not formed in the open circuit where the electric field is weak, or the spacer is completely disturbed due to the imbalance of the electric field. There was an area that was not created.
  • the manufactured liquid crystal display had poor cell thickness uniformity. Industrial applicability
  • a spacer can be arrange
  • the same spacer arrangement as that of the display electrode region can be provided also in the region of, and it is possible to provide a liquid crystal display device having a uniform cell thickness in the plane of the liquid crystal display device.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un procédé de production d'un dispositif d'affichage à cristaux liquides doté d'un très bon contraste et d'une très bonne uniformité d'affichage, ce procédé permettant de répartir des éléments d'espacement de manière uniforme sur un substrat et d'uniformiser l'épaisseur d'une cellule sur le substrat tout entier; elle concerne également un substrat destiné à ce dispositif d'affichage à cristaux liquides, ainsi qu'un dispositif mettant en oeuvre ce substrat. Ce procédé de production du dispositif d'affichage à cristaux liquides comprend les étapes suivantes consistant à appliquer une tension de la même polarité que la polarité de charge des dispositifs d'espacement, sur plusieurs électrodes formées sur un substrat, et à étaler les éléments d'espacement à l'aide d'une force répulsive agissant sur ceux-ci, ces éléments étant répartis de façon qu'un champ électrique régnant dans le voisinage d'une zone d'électrodes comprenant au moins les électrodes du substrat, soit presque égal à celui régnant au centre de la zone d'électrodes.
PCT/JP1999/006545 1998-11-25 1999-11-25 Procede de production d'un affichage a cristaux liquides, substrat destine a ce dispositif et dispositif ainsi forme WO2000031580A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020017006443A KR20010090850A (ko) 1998-11-25 1999-11-25 액정표시장치의 제조방법, 액정표시장치용 기판 및액정표시장치
JP2000584339A JP3494993B2 (ja) 1998-11-25 1999-11-25 液晶表示装置の製造方法、液晶表示装置用基板及び液晶表示装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10/333833 1998-11-25
JP33383398 1998-11-25

Publications (1)

Publication Number Publication Date
WO2000031580A1 true WO2000031580A1 (fr) 2000-06-02

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JP (1) JP3494993B2 (fr)
KR (1) KR20010090850A (fr)
TW (1) TW531680B (fr)
WO (1) WO2000031580A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011118428A (ja) * 2005-09-15 2011-06-16 Sharp Corp 表示パネル
US8080940B2 (en) 2007-05-18 2011-12-20 Lg Electronics Inc. Plasma display panel
US8183776B2 (en) 2007-05-18 2012-05-22 Lg Electronics Inc. Plasma display panel having a seal layer that contains beads

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115097674A (zh) * 2022-07-22 2022-09-23 绵阳惠科光电科技有限公司 显示面板及显示装置

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Publication number Priority date Publication date Assignee Title
JPH04204417A (ja) * 1990-11-29 1992-07-24 Matsushita Electric Ind Co Ltd 液晶表示パネルの製造方法
JPH05333345A (ja) * 1992-05-28 1993-12-17 Fujitsu Ltd 液晶表示パネルの製造方法

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Publication number Priority date Publication date Assignee Title
JPH04204417A (ja) * 1990-11-29 1992-07-24 Matsushita Electric Ind Co Ltd 液晶表示パネルの製造方法
JPH05333345A (ja) * 1992-05-28 1993-12-17 Fujitsu Ltd 液晶表示パネルの製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011118428A (ja) * 2005-09-15 2011-06-16 Sharp Corp 表示パネル
US8080940B2 (en) 2007-05-18 2011-12-20 Lg Electronics Inc. Plasma display panel
US8183776B2 (en) 2007-05-18 2012-05-22 Lg Electronics Inc. Plasma display panel having a seal layer that contains beads

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KR20010090850A (ko) 2001-10-19
JP3494993B2 (ja) 2004-02-09
TW531680B (en) 2003-05-11

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