JP4171145B2 - Multi-domain liquid crystal display device - Google Patents

Multi-domain liquid crystal display device Download PDF

Info

Publication number
JP4171145B2
JP4171145B2 JP29739299A JP29739299A JP4171145B2 JP 4171145 B2 JP4171145 B2 JP 4171145B2 JP 29739299 A JP29739299 A JP 29739299A JP 29739299 A JP29739299 A JP 29739299A JP 4171145 B2 JP4171145 B2 JP 4171145B2
Authority
JP
Japan
Prior art keywords
liquid crystal
multi
crystal display
domain
layer
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP29739299A
Other languages
Japanese (ja)
Other versions
JP2000137227A (en
Inventor
キョン ジン キム
ド ヒー クウォン
スン ジュン ベー
ジャン ジン ヨー
ジェ ユン リー
ユン ボク リー
Original Assignee
エルジー ディスプレイ カンパニー リミテッド
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
Priority to KR1998-43631 priority Critical
Priority to KR1019980043631A priority patent/KR100327443B1/en
Priority to KR1019980043920A priority patent/KR100313948B1/en
Priority to KR1998-43920 priority
Priority to KR1998-48226 priority
Priority to KR1019980048226A priority patent/KR100313949B1/en
Priority to KR1019980050708A priority patent/KR100277929B1/en
Priority to KR1998-50708 priority
Priority to KR1019990005401A priority patent/KR100323734B1/en
Priority to KR1999-05401 priority
Application filed by エルジー ディスプレイ カンパニー リミテッド filed Critical エルジー ディスプレイ カンパニー リミテッド
Publication of JP2000137227A publication Critical patent/JP2000137227A/en
Application granted granted Critical
Publication of JP4171145B2 publication Critical patent/JP4171145B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133707Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133512Light shielding layers, e.g. black matrix
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/137Devices 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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139Devices 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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393Devices 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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells

Abstract

Gate bus lines and data bus lines are arranged orthogonally on the first of two facing substrates, separated by a layer of liquid crystal, to define a plurality of pixel regions each containing a pixel electrode. A common electrode is formed on the facing substrate. Dielectric frames control the alignment direction of the molecules in the liquid crystal layer.

Description

[0001]
BACKGROUND OF THE INVENTION
This application is incorporated herein by reference, Korean Patent Application No. 1998-43631 filed on October 19, 1998, Korean Patent Application No. 1998 filed on October 20, 1998, which is incorporated herein by reference. -43920, and Korean Patent Application No. 1999-05401 filed on Feb. 18, 1999.
The present invention relates to a liquid crystal display device (LCD), and more particularly, to a dielectric frame on one substrate and an electric field inducing window on the same substrate or another substrate.
window).
[0002]
[Prior art]
In recent years, LCDs have been proposed when the liquid crystal is not aligned and the liquid crystal is driven by a common electrode 17 having an open region 19. FIG. 1 is a cross-sectional view showing a pixel unit of a conventional LCD.
[0003]
In a conventional LCD, a plurality of gate bus lines arranged in a first direction on a first substrate and a plurality of data bus lines arranged in a second direction on the first substrate are first The substrate is divided into a plurality of pixel regions.
[0004]
The thin film transistor (TFT) is connected to the data bus wiring. Deconductor layer 4 The image signal supplied to the upper pixel electrode 13 is used. The TFT is formed in each pixel region, and includes a gate electrode, a gate insulator, a semiconductor layer, an ohmic contact layer, a source electrode, and a drain electrode.
[0005]
Instead, the side electrode 15 is formed so as to surround the pixel region on the gate insulator, Deconductor layer 4 Is formed over the entire first substrate, the pixel electrode 13 is formed to overlap the side electrode, and is connected to the drain electrode.
[0006]
On the second substrate, a light shielding layer is formed to block any light leaking from the gate bus wiring, data bus wiring and TFT, a color filter layer is formed on the light shielding layer, and the overcoat layer is a color. A common electrode 17 is formed on the filter layer so as to have an open region 19 on the overcoat layer, and a liquid crystal layer is formed between the first and second substrates.
[0007]
The open regions (slits) 19 of the pixel electrode 13 and the common electrode 17 distort the electric field applied to the liquid crystal layer. Therefore, the liquid crystal molecules are driven in multiple directions within the unit pixel. This means that when a voltage is applied across the LCD, the dielectric energy due to the distorted electric field places the liquid crystal director in the required or desired position.
[0008]
FIG. 2 is a cross-sectional view of another liquid crystal display element in the related art. The liquid crystal display element has a pixel electrode 13 smaller than the common electrode 17, thereby inducing electric field distortion.
[0009]
[Problems to be solved by the invention]
However, the LCD requires the open region 19 in the common electrode 17 or the pixel electrode 13, and the wider the open region, the more stably the liquid crystal molecules can be driven. When the electrode does not have an open region or the width of the open region is narrow, the distortion of the electric field necessary for dividing the pixel region is weakened.
[0010]
Then, a defect occurs in the region where the liquid crystal director is parallel to the transmission axis of the polarizer, resulting in a decrease in luminance. Furthermore, the liquid crystal texture has an irregular structure depending on the surface state of the LCD.
[0011]
[Means for Solving the Problems]
Accordingly, it is an object of the present invention to provide an LCD that substantially avoids one or more problems due to limitations and disadvantages of the related art.
An object of the present invention is to provide a multi-domain LCD having a wide viewing angle due to multi-domain and high luminance due to stable alignment of liquid crystal molecules.
Other features and advantages of the invention are described below, and certain portions will be apparent from the description or will be learned by practice of the invention. Other objects and advantages of the invention will be achieved by the structure described in the detailed description and claims and particularly shown in the accompanying drawings.
[0012]
In order to achieve these objectives and in accordance with the objectives of the present invention, a multi-domain liquid crystal display element includes first and second facing each other, as broadly embodied and described herein. A plurality of gate bus wirings arranged in a first direction on the first substrate and a first substrate to define a pixel region; a liquid crystal layer disposed between the first substrate and the second substrate; A plurality of data bus lines arranged in a second direction on one substrate, a pixel electrode in a pixel region, a dielectric frame for controlling the orientation of liquid crystal molecules in the liquid crystal layer, and a second substrate A color filter layer, a common electrode on the color filter layer, and an alignment layer on at least one substrate between the first and second substrates.
[0013]
The common electrode and / or the pixel electrode has an electric field induction window inside thereof.
A dielectric frame surrounds the pixel area or is formed in the pixel area. The dielectric constant of the dielectric frame is less than or equal to the dielectric constant of the liquid crystal layer. The dielectric frame includes photosensitive materials such as photoacrylate and BCB (benzocyclobutene).
It will be appreciated that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the claimed invention.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a multi-domain liquid crystal display device of the present invention will be described in detail with reference to the accompanying drawings. 3 to 6 are cross-sectional views of multi-domain liquid crystal display elements according to first to fourth embodiments of the present invention. As shown in these drawings, the present invention relates to first and second substrates 31 and 33, a plurality of gate bus lines arranged in a first direction on the first substrate, and a first substrate. A plurality of data bus lines arranged in the second direction on the top, the TFTs, and the entire first substrate 31 are arranged. Deconductor layer 37 The pixel electrode 13, the dielectric frame 41, and the first alignment layer 45 disposed on the entire first substrate 31.
[0015]
On the second substrate 33, the light shielding layer 25 is formed to block all light leaking from the gate bus wiring, the data bus wiring, and the TFT, and the color filter layer 23 is formed on the light shielding layer. The overcoat layer 29 is formed on the color filter layer 23, the common electrode 17 is formed on the overcoat layer, the second alignment layer 47 is formed on the entire second substrate 33, and the liquid crystal layer is formed. It is formed between the first and second substrates 31 and 33.
[0016]
The data bus wiring and the gate bus wiring divide the first substrate 31 into a plurality of pixel regions. The TFT is formed in each pixel region, and includes a gate electrode 11, a gate insulator 35, a semiconductor layer 5, an ohmic contact layer, and source / drain electrodes 7 and 9. Deconductor layer 37 Is formed on the entire first substrate 31, and the pixel electrode 13 is coupled to the drain electrode 9.
[0017]
The dielectric frame 41 controls the alignment direction of the liquid crystal molecules in the liquid crystal layer. The dielectric frame 41 is formed on the pixel electrode 13 or the common electrode 17, and a dielectric frame can be formed on both substrates.
[0018]
In order to manufacture the multi-domain LCD of the present invention, the gate electrode 11, the gate insulator 35, the semiconductor layer 5, the ohmic contact layer 6, and the source / drain electrodes 7 and 9 are provided in each pixel region on the first substrate 31. The included TFT is formed. At this time, a plurality of gate bus lines and a plurality of data bus lines are formed to divide the first substrate 31 into a plurality of pixel regions.
[0019]
The gate electrode 11 and the gate bus wiring are formed by depositing a metal such as Al, Mo, Cr, Ta, Al alloy or the like by sputtering and then patterning. Alternatively, the gate electrode and the gate bus wiring can be configured as a double layer formed of different materials.
[0020]
The gate insulator 35 is formed by depositing SiNx or SiOx using PECVD (plasma enhanced chemical vapor deposition). The semiconductor layer 5 and the ohmic contact layer are deposited using PECVD, and amorphous silicon (a-Si) and doped amorphous silicon (n + a-Si) is formed by patterning each. SiNx or SiOx and a-Si, n + The a-Si is formed by deposition using PECVD, the gate insulator 35 is formed, and the semiconductor layer 5 and the ohmic contact layer 6 are formed by patterning.
[0021]
The data bus wiring and source / drain electrodes 7 and 9 are formed by depositing a metal such as Al, Mo, Cr, Ta, Al alloy or the like by sputtering and then patterning. Alternatively, the gate electrode and the gate bus wiring can be configured as a double layer formed of different materials.
[0022]
A storage electrode (not shown) covers the gate bus wiring and is connected to the pixel electrode 13 at the same time. The storage electrode forms a storage capacitor together with the gate bus wiring 1.
[0023]
afterwards, Deconductor layer 37 Is formed on the entire first substrate 31 using BCB (benzocyclobutene), acrylic resin, polyimide compound, SiNx, or SiOx. The pixel electrode 13 is formed by depositing a material such as ITO (indium tin oxide) by sputtering and then patterning. A contact hole 39 is provided on the drain electrode 9 to connect the pixel electrode 13 to the drain and storage electrode. Deconductor layer 37 It is formed by opening and patterning a part of.
[0024]
A light shielding layer 25 is formed on the second substrate 33 in order to block all light leaking from the gate bus wiring, the data bus wiring, and the TFT. The color filter layer 23 forms R, G, B (red, green, blue) elements on the light shielding layer 25. On the color filter layer 23, an overcoat layer 29 is formed of a resin. The common electrode 17 is formed on the overcoat layer using ITO.
[0025]
A liquid crystal layer is formed by injecting liquid crystal between the first and second substrates 31 and 33. The liquid crystal layer includes liquid crystal molecules having positive or negative dielectric anisotropy.
[0026]
The dielectric frame 41 is formed by depositing a photosensitive material on the common electrode 17 or the pixel electrode 13 and patterning it into various shapes using photolithography. The dielectric frame 41 includes a material having a dielectric constant equal to or smaller than that of the liquid crystal and preferably having a dielectric constant of 3 or less, such as photoacrylate or BCB (benzocyclobutene).
[0027]
Further, the dielectric frame 41 is formed on at least one substrate between the first and second substrates 31 and 33 (see FIGS. 3 to 6). An electric field induction window 43 is formed on at least one substrate between the first and second substrates 31 and 33 (see FIGS. 4 and 6).
[0028]
At this point, the dielectric frame 41 and the electric field induction window 43 are formed together on the same substrate. The electric field induction window 43 is formed by patterning holes in the common electrode 17 or the pixel electrode 13.
[0029]
7 to 39, these drawings are plan views showing various dielectric frames 41 and electric field induction windows 43 of the multi-domain liquid crystal display device according to the embodiment of the present invention. The solid arrow represents the orientation direction of the second substrate, and the broken arrow represents the orientation direction of the first substrate.
[0030]
As shown in these figures, the dielectric frame 41 and the electric field induction window 43 are patterned in various shapes to achieve a multi-domain effect. The electric field induction window 43 may be a slit or a hole. Furthermore, two adjacent pixels and two orientation directions are combined to achieve a multi-domain effect.
[0031]
As in the “+”, “x”, or double “Y” shape, an electric field induction window 43 is formed to divide each pixel into four regions, or to separate each pixel horizontally, vertically and / or Multi-domains are obtained by dividing diagonally and forming different alignment treatments or alignment directions on each region and each substrate.
[0032]
A compensation film 29 is formed of a polymer on at least one substrate. The compensation film 29 is a negative uniaxial film, has one optical axis, and compensates for a phase difference in a direction according to a viewing angle. Therefore, the left and right viewing angles can be effectively compensated by expanding the region without gray inversion, increasing the brightness ratio in the tilt direction, and forming a multi-domain from one pixel.
[0033]
In this multi-domain liquid crystal display element, a negative biaxial film can be formed as the compensation film 29 having two optical axes and having a wider viewing angle characteristic than a negative uniaxial film. . The compensation film 29 can be formed on both substrates or one of these substrates.
[0034]
After forming the compensation film 29, a polarizer is formed on at least one substrate. At this time, the compensation film 29 and the polarizer are preferably configured as a single unit.
[0035]
In this LCD, the liquid crystal layer includes liquid crystal molecules having negative dielectric anisotropy, and is subjected to homeotropic alignment in which the liquid crystal molecules in the liquid crystal layer are vertically aligned on the surfaces of the first and second substrates. .
[0036]
In the multi-domain LCD of the present invention, an alignment layer (not shown) is formed on the entire first and / or second substrate. The alignment layer is made of polyamide or polyimide compound, PVA (polyvinyl alcohol), polyamic acid or SiO. 2 Contains materials such as If rubbing is used to determine the orientation direction, any material suitable for rubbing can be applied.
[0037]
Further, the alignment layer can be formed of a photosensitive material such as PVCN (polyvinyl cinnamate), PSCN (polysiloxane cinnamate), or CelCN (cellulose cinnamate) -based compound. Any material suitable for the photo-alignment treatment can be used.
[0038]
By illuminating the alignment layer once, the alignment or pretilt direction and pretilt angle are determined. The light used for photo-alignment can be light in the ultraviolet light range, any light with no polarity, linearly polarized light, and partially polarized light.
In rubbing or photo-alignment processing, it can be applied to one or both of the first and second substrates, and different alignment processing can be applied to each substrate.
[0039]
By the alignment process, a multi-domain LCD is formed having at least two domains, and the LC molecules of the LC layer are aligned differently from each other in each domain. That is, the multi-domain is to divide each pixel into “+” and “x” shapes, or to divide each pixel horizontally, vertically and / or diagonally, or to each domain and each substrate. On the other hand, it is obtained by forming different alignment treatments or alignment directions.
[0040]
It is possible not to orient at least one of the divided domains. It is also possible not to align all domains.
As a result, the multi-domain LCD of the present invention forms a dielectric frame having a dielectric constant different from that of the liquid crystal, and an electric field induction window that can distort the electric field and thereby obtain a wide viewing angle.
Further, when performing the alignment treatment, a high response time and a stable LC structure can be obtained by the pretilt angle and the fixed energy.
[0041]
40 and 41 are a plan view and a cross-sectional view showing a multi-domain liquid crystal display device according to the fifth embodiment of the invention, and FIGS. 42 to 44 show a multi-domain liquid crystal display device according to the sixth embodiment of the invention. FIGS. 45 to 47 are a plan view and a cross-sectional view of a multi-domain liquid crystal display element according to a seventh embodiment of the present invention, and FIGS. FIG. 20 is a plan view and a cross-sectional view of a multi-domain liquid crystal display device according to an eighth embodiment of the invention.
[0042]
As shown in these drawings, the multi-domain liquid crystal display element according to the present invention includes a plurality of first and second substrates 31 and 33 and a plurality of substrates arranged in a first direction on the first substrate. Gate bus lines, a plurality of data bus lines arranged in the second direction on the first substrate, the TFTs, and the entire first substrate 31 are arranged. Deconductor layer 37 And a pixel electrode 13 and a first alignment layer 53 disposed on the entire first substrate.
[0043]
On the second substrate, a light shielding layer 25 is formed to block all light leaking from the gate bus wiring, the data bus wiring, and the TFT, and a color filter layer 23 is formed on the light shielding layer, A common electrode 17 is formed on the color filter layer, a dielectric frame 57 is formed on the common electrode 17 to distort the electric field, a second alignment layer 55 is formed on the entire second substrate, and the first A liquid crystal layer is formed between the second substrate and the second substrate.
[0044]
The data bus wiring and the gate bus wiring divide the first substrate 31 into a plurality of pixel regions. A TFT is formed in each pixel, and includes a gate electrode 11, a gate insulator 35, a semiconductor layer 5, an ohmic contact layer, and source / drain layers 7 and 9. Deconductor layer 37 Is formed on the entire first substrate, and the pixel electrode 13 is connected to the drain electrode 9.
[0045]
In order to manufacture the multi-domain LCD of the present invention, in each pixel region on the first substrate 31, a gate electrode 11, a gate insulator 35, a semiconductor layer 5, an ohmic contact layer, a source / drain layer 7, 9 is formed. At this time, a plurality of gate bus lines and a plurality of data bus lines are formed to divide the first substrate 31 into a plurality of pixel regions.
[0046]
The gate electrode 11 and the gate bus wiring are formed by depositing a metal such as Al, Mo, Cr, Ta, Al alloy or the like by sputtering and then patterning. The gate insulator 35 is formed thereon by depositing SiNx or SiOx using PECVD (plasma enhanced chemical vapor deposition). The semiconductor layer 5 and the ohmic contact layer are deposited using PECVD, and amorphous silicon (a-Si) and doped amorphous silicon (n + a-Si) is formed by patterning each. SiNx or SiOx and a-Si, n + The a-Si is formed by deposition using PECVD, the gate insulator 35 is formed, and the semiconductor layer 5 and the ohmic contact layer 6 are formed by patterning. The data bus wiring and source / drain electrodes 7 and 9 are formed by depositing a metal such as Al, Mo, Cr, Ta, Al alloy or the like by sputtering and then patterning.
[0047]
A storage electrode (not shown) is formed to cover the gate bus wiring and to be connected to the pixel electrode 13 at the same time, and the storage electrode constitutes a storage capacitor together with the gate bus wiring.
[0048]
afterwards, Deconductor layer 37 Is formed on the entire first substrate 31 by BCB (benzocyclobutene), acrylic resin, polyimide compound, SiNx or SiOx. The pixel electrode 13 is formed by depositing a metal such as ITO (indium tin oxide) by sputtering and then patterning. A contact hole 39 is provided on the drain electrode 9 to connect the pixel electrode 13 to the drain and storage electrode. Deconductor layer 37 Is formed by drilling and patterning.
[0049]
On the second substrate 33, a light shielding layer 25 for blocking light leaking from the gate bus wiring, the data bus wiring, and the TFT is formed. The color filter layer 23 alternately forms R, G, B (red, green, blue) elements on the light shielding layer. The common electrode 17 is formed on the color filter layer using ITO. The dielectric frame 57 is formed by depositing a photosensitive material on the common electrode 17 or the pixel electrode 13 and patterning it into various shapes using photolithography. A liquid crystal layer is formed by injecting liquid crystal between the first and second substrates.
[0050]
The dielectric frame 57 includes a material having a dielectric constant equal to or smaller than that of the liquid crystal, preferably 3 or less, such as photoacrylate or BCB (benzocyclobutene).
[0051]
Furthermore, the dielectric frame 57 is also used as a spacer (see FIGS. 41, 44, 47, 50, 52, and 54). The dielectric frame 57 is formed on at least one substrate between the first and second substrates. In these embodiments, the spacer dispersion treatment can be omitted, and the uniformity of the gap between the liquid crystal cells is increased, and as a result, the yield is improved.
[0052]
The electric field induction window 43 is formed on at least one substrate between the first and second substrates (see FIGS. 46, 53, and 54). At this time, the dielectric frame and the electric field induction window are formed together on the same substrate. The electric field induction window 43 is formed in various shapes by patterning holes or slits in the common electrode 17 or the pixel electrode 13.
[0053]
In the embodiment of the multi-domain LCD of the present invention, the auxiliary electrode 27 is additionally formed in the region excluding the pixel region (FIGS. 42 and 48). The auxiliary electrode 27 is formed on the layer in which the pixel electrode 13 or the gate electrode 11 is formed, and is electrically connected to the common electrode 17 (see FIGS. 43, 44, 51, and 52).
[0054]
The auxiliary electrode 27 is formed by depositing a metal such as ITO (indium tin oxide), Al, Mo, Cr, Ta, Ti, or an Al alloy by sputtering and then patterning. At this time, the auxiliary electrode 27 and the pixel electrode 13 can be formed by patterning the same metal once or patterning different metals twice.
[0055]
As shown in FIGS. 62 to 68 and FIGS. 82 to 91, the auxiliary electrode 27 may be formed so as to surround the pixel electrode 13, on the side of the data bus line and / or on the side of the gate bus line. May be formed.
[0056]
48 to 54 show that the light shielding layer 25 is formed on the first substrate 31, and FIGS. 51 and 52 show that the auxiliary electrode 27 is formed on the layer on which the pixel electrode 13 is formed. It shows that it is formed. In these embodiments, the light shielding layer is formed to accurately adjust the pixel region, thereby reducing the lamination margin and improving the aperture ratio compared to the case where the light shielding layer is formed on the second substrate. To do.
[0057]
A compensation film 29 is formed of a polymer on at least one substrate. This compensation film is a negative uniaxial film, has one optical axis, and compensates for a phase difference in a direction depending on a viewing angle. Therefore, the right and left viewing angles can be effectively compensated by expanding the region without gradation inversion, an increase in contrast ratio in the tilt direction, and formation of one pixel in a multi-domain.
[0058]
In this multi-domain liquid crystal display element, a negative biaxial film having two optical axes and having a wider viewing angle characteristic than the negative uniaxial film is formed as the compensation film 29. Can do. This compensation film can be formed on both substrates or one substrate.
[0059]
After the formation of the compensation film 29, a polarizer is formed on at least one substrate. At this time, the compensation film and the polarizer are preferably configured as a single unit.
In FIGS. 55-61, the dielectric frame 57 that achieves the multi-domain effect is patterned in various forms.
62 to 68, the auxiliary electrode 27 is formed so as to surround the pixel electrode 13, and the dielectric frame 57 that achieves the multi-domain effect is patterned in various forms.
69 to 81, the electric field induction window 43 is formed, and the induction frame 57 is patterned in various forms, thereby achieving a multi-domain effect. The electric field induction window 43 may be a slit or a hole.
[0060]
55-81, the liquid crystal layer has a negative dielectric anisotropy subjected to homeotropic alignment in which the liquid crystal molecules in the liquid crystal layer are aligned perpendicular to the surfaces of the first and second substrates. Liquid crystal molecules having
[0061]
82 to 85, the auxiliary electrode 27 is formed, and the dielectric frame 57 that achieves the multi-domain effect is patterned in various forms. Although not shown, an embodiment in which the auxiliary electrode 27 is not formed is also conceivable.
A solid arrow 63 indicates the rubbing direction of the second substrate 33, and a broken arrow 61 indicates the rubbing direction of the first substrate 31.
[0062]
86 to 88, the auxiliary electrode 27 is formed, and the dielectric frame 57 is patterned in various forms. Further, two adjacent pixels and two orientation directions are combined to achieve a multi-domain effect. Although not shown, an embodiment in which the auxiliary electrode 27 is not formed is also conceivable.
A solid arrow 67 indicates the orientation direction of the second substrate 33, and a broken arrow 65 indicates the orientation direction of the first substrate 31.
[0063]
89 to 91, the auxiliary electrode 27 is formed, and the dielectric frame 57 is patterned in various forms. Further, two adjacent pixels and two orientation directions are combined in a different manner from that shown in FIGS. 86 to 88 to achieve a multi-domain effect. Although not shown, an embodiment in which the auxiliary electrode 27 is not formed is also conceivable.
[0064]
82-91, the liquid crystal layer has a negative dielectric anisotropy subjected to homeotropic alignment in which liquid crystal molecules in the liquid crystal layer are aligned perpendicular to the surfaces of the first and second substrates. Liquid crystal molecules having
[0065]
Having formed a field induction window or dielectric frame, each pixel is divided into four domains, such as a “+”, “x”, or double “Y” shape, or each pixel is horizontally, vertically and / or Alternatively, a multi-domain can be obtained by dividing the structure diagonally and performing different alignment treatments or alignment directions on each domain and each substrate.
[0066]
Furthermore, in the multi-domain LCD of the present invention, the first and second alignment layers 53 and 55 are formed on the entire first and / or second substrate. This alignment layer is made of polyamide or polyimide compound, PVA (polyvinyl alcohol), polyamic acid or SiO. 2 Contains materials such as When rubbing is used to determine the orientation direction, any material suitable for the rubbing process can be applied.
[0067]
Further, the alignment layer can be formed of a photosensitive material such as PVCN (polyvinyl cinnamate), PSCN (polysiloxane cinnamate), and CelCN (cellulose cinnamate) -based compound. Any material suitable for the photo-alignment process may be used. By irradiating the alignment layer once with light, the alignment or pretilt direction and pretilt angle are determined. The light used for photo-alignment is preferably light in the ultraviolet range, any unpolarized light, linearly polarized light and partially polarized light.
[0068]
The rubbing or photo-alignment process can be applied to one or both of the first and second substrates, and a different alignment process can be applied to each substrate.
The alignment process forms a multi-domain LCD using at least two domains, and the LC molecules of the LC layer are aligned in different directions in each domain. That is, multi-domain divides each pixel into four regions, such as “+” or “x” shapes, or divides each pixel horizontally, vertically and / or diagonally, and each domain and It is obtained by performing different alignment treatments or alignment directions on each substrate.
[0069]
It is possible that at least one of the divided domains is not oriented. It is also possible not to align all domains.
As a result, the multi-domain LCD of the present invention forms a dielectric frame having a dielectric constant different from that of liquid crystal, an auxiliary electrode for distorting the electric field, or an electric field induction window, thereby achieving a wide viewing angle.
[0070]
Further, the dielectric frame is patterned as a spacer, and the spacer processing in the conventional LCD processing can be omitted.
Furthermore, when performing the alignment treatment, a high response time and a stable LC structure can be achieved by the pretilt angle and anchoring energy.
[0071]
92 to 95 are sectional views showing a multi-domain liquid crystal display device according to the ninth embodiment of the present invention. FIGS. 96 to 98 show multi-domain liquid crystal displays according to the tenth embodiment of the present invention. It is sectional drawing of an element.
[0072]
As shown in these drawings, the present invention includes first and second substrates 31, 33, a plurality of gate bus lines 1 arranged in a first direction of the first substrate, and a first substrate. A plurality of data bus wirings 3 arranged in the second direction, TFTs, Deconductor layer 37 And a pixel electrode 13.
[0073]
A light shielding layer 25 is formed on the second substrate 33 to block light leaking from the gate and data bus wirings 1 and 3 and the TFT, and a color filter layer 23 is formed on the light shielding layer. A common electrode 17 is formed on the layer, a dielectric frame is formed in a region other than the pixel region, and a liquid crystal layer is formed between the first and second substrates.
[0074]
The data bus wiring 3 and the gate bus wiring 1 divide the first substrate 31 into a plurality of pixel regions. The TFT is formed in each pixel region, and includes a gate electrode 11, a gate insulator 35, a semiconductor layer 5, an ohmic contact layer 6, and source / drain electrodes 7 and 9. Deconductor layer 37 Is formed on the entire first substrate 31. Pixel electrode 13 is coupled to drain electrode 9.
[0075]
In order to manufacture the multi-domain LCD of the present invention, the gate electrode 11, the gate insulator 35, the semiconductor layer 5, the ohmic contact layer 6, the source / drain layers 7, 9 are formed in each pixel region on the first substrate 31. A TFT having the following structure is formed. At this time, a plurality of gate bus lines 1 and a plurality of data bus lines 3 are formed to divide the first substrate 31 into a plurality of pixel regions.
[0076]
The gate electrode 11 and the gate bus wiring 1 are formed by depositing a metal such as Al, Mo, Cr, Ta, Al alloy or the like by sputtering and then patterning. Alternatively, the gate electrode and the gate bus wiring can be formed as a double layer made of different materials.
[0077]
The gate insulator 35 is formed thereon by depositing SiNx, SiOx, BCB (benzocyclobutene), or acrylic resin using PECVD. The semiconductor layer 5 and the ohmic contact layer 6 include amorphous silicon (a-Si) and doped amorphous silicon (n + Each of a-Si) is formed by depositing and patterning using PECVD (plasma enhanced chemical vapor deposition). SiNx or SiOx and a-Si, n + A-Si is formed by deposition using PECVD, a gate insulator 35 is formed, and the semiconductor layer 5 and the ohmic contact layer 6 are formed by patterning.
[0078]
The data bus wiring 3 and the source / drain electrodes 7 and 9 are formed by depositing a metal such as Al, Mo, Cr, Ta, Al alloy or the like by sputtering and then patterning. Alternatively, the data bus wiring and the source / drain electrodes can be formed as a double layer made of different materials.
[0079]
A storage electrode (not shown) is formed so as to cover the gate bus wiring 1, and the storage electrode constitutes a storage capacitor together with the gate bus wiring 1. afterwards, Deconductor layer 37 Is formed on the entire first substrate using BCB (benzocyclobutene), acrylic resin, polyimide compound, SiNx or SiOx. The pixel electrode 13 is formed by depositing a metal such as ITO (indium tin oxide) by sputtering and then patterning. A contact hole 39 is formed on the drain electrode 9 to connect the pixel electrode 13 to the drain electrode 9 and the storage electrode. Deconductor layer 37 It is formed by drilling and patterning a part of.
[0080]
On the second substrate 33, a light shielding layer 25 for blocking light leaking from the gate bus wiring 1, the data bus wiring 3, and the TFT is formed. A color filter layer 23 is formed for alternately arranging R, G, B (red, green, blue) elements on the light shielding layer 25.
[0081]
The common electrode 17 is formed on the color filter layer 23 using ITO, and the liquid crystal layer is formed by injecting liquid crystal between the first and second substrates. The liquid crystal layer includes liquid crystal molecules having positive or negative dielectric anisotropy. The liquid crystal layer may contain a chiral dopant.
[0082]
At least one substrate between the first and second substrates is formed by depositing a photosensitive material in a region other than the region where the pixel electrode is formed, and patterning it in various forms using photolithography. A dielectric frame 53 is formed.
The dielectric frame 53 includes a material having a dielectric constant equal to or smaller than that of the liquid crystal, which is preferably 3 or less, such as photoacrylate or BCB (benzocyclobutene).
[0083]
As an example, the dielectric frame may include a mixture of polyimide and carbon black, or a mixture of acrylic resin and carbon black. Therefore, the dielectric frame blocks light leaking from the regions other than the pixel region and distorts the electric field applied to the liquid crystal layer. In this case, the dielectric constant of the liquid crystal layer is about 4, and the dielectric constant of the dielectric frame is preferably 3.5 or less.
[0084]
On the other hand, as shown in FIGS. 96 to 98, the dielectric frame is also used as a spacer for maintaining a uniform gap between the first substrate and the second substrate.
Further, the dielectric frame 53 is formed on at least one substrate between the first and second substrates. An electric field induction window 51 is formed on at least one substrate between the first and second substrates.
At this time, the dielectric frame 53 and the electric field induction window 51 can be formed together on the same substrate. The electric field induction window 51 is formed by patterning the common electrode 17 or the pixel electrode 13.
[0085]
A compensation film 29 is formed on at least one substrate using a polymer. The compensation film is a negative uniaxial film, has one optical axis, and compensates for a phase difference in a direction depending on a viewing angle. Therefore, the left and right viewing angles can be effectively compensated by expanding the region without gradation inversion, an increase in contrast ratio in the tilt direction, and formation of one pixel in a multi-domain.
[0086]
In the multi-domain liquid crystal display device of the present invention, a negative biaxial film can be formed as a compensation film having two optical axes and a wider viewing angle than the negative uniaxial film. The compensation film may be formed on both substrates or one of them.
After forming the compensation film, a polarizer is formed on at least one substrate. At this time, it is preferable that the compensation film and the polarizer are configured integrally.
[0087]
In the multi-domain LCD of the present invention, the “n-line” thin film transistor (US Pat. No. 5,694,185) is designed to reduce power consumption, increase brightness, improve lower reflection, and contrast ratio. The aperture ratio is improved by the optimum structure design. The aperture ratio is increased by forming a TFT above the gate line and providing an “n-line” TFT. The parasitic capacitance generated between the gate bus wiring and the drain electrode can be reduced when a TFT having the same channel length as the symmetric TFT structure is manufactured by the effect of channel length extension.
[0088]
The multi-domain LCD of the present invention comprises a dielectric frame 53 on the pixel electrode and / or common electrode, or an electric field induction window 51 such as a hole or slit in the pixel electrode, Deconductor layer It has a gate insulator, a color film layer and / or a common electrode by patterning, whereby the effect of distorting the electric field and multi-domain can be achieved.
[0089]
That is, by forming the electric field induction window 51 or the dielectric frame 53, each pixel is divided into four domains such as “+”, “x”, or double “Y” shape, or Multi-domains can be obtained by dividing the pixels horizontally, vertically and / or diagonally and by forming different alignment treatments or alignment directions for each domain and each substrate.
[0090]
99 to 148 are plan views showing various electric field induction windows and dielectric frames of the multi-domain liquid crystal display device according to the embodiment of the present invention. In these drawings, a solid line arrow indicates the orientation direction of the second substrate, and a broken line arrow indicates the orientation direction of the first substrate.
[0091]
Furthermore, the dielectric frame 53 and the at least one electric field induction window 51 are patterned into various shapes to obtain a multi-domain effect. The field induction window may be a slit or a hole. Further, two adjacent pixels and two orientation directions are combined to achieve a multi-domain effect.
[0092]
103 and 104 are a plan view and a sectional view of a multi-domain liquid crystal display device according to the eleventh embodiment of the present invention.
As shown in these drawings, the eleventh embodiment of the present invention has a plurality of dielectric frames 53 having a zigzag shape in a pixel on one substrate between the first and second substrates. . The plurality of electric field induction windows 51 are formed in various forms on the first and second substrates. Further, a plurality of auxiliary electrodes 27 are formed on the same layer where the gate bus wiring is formed, corresponding to the electric field induction window 51 of the pixel electrode 13.
[0093]
In the multi-domain LCD of the present invention, an alignment layer (not shown) is formed over the entire first and / or second substrate. The alignment layer is made of polyamide or polyimide compound, PVA (polyvinyl alcohol), polyamic acid or SiO. 2 Contains materials such as If rubbing is used to determine the orientation direction, any material suitable for the rubbing process should be applied.
[0094]
Further, the alignment layer can be formed using a photosensitive material such as PVCN (polyvinyl cinnamate), PSCN (polysiloxane cinnamate), and CelCN (cellulose cinnamate) -based compound. Any material suitable for the photo-alignment process can be used.
[0095]
Once the alignment layer is irradiated with light, the alignment or pretilt direction and pretilt angle are determined. The light used for photo-alignment is preferably light in the ultraviolet range, and any unpolarized light, linearly polarized light and partially polarized light can be used.
The rubbing or photo-alignment process can be applied to one or both of the first and second substrates, or a different alignment process can be applied to each substrate.
[0096]
With the alignment process, a multi-domain LCD is formed using at least two domains, and the LC molecules of the LC layer are aligned in different directions in each domain. That is, each pixel is divided into four domains such as “+” or “×” shape, or each pixel is divided horizontally, vertically and / or diagonally, and each domain and each substrate is divided. On the other hand, multi-domain is achieved by performing different alignment treatments or formation of alignment directions.
[0097]
At least one of the divided domains may not be oriented. Also, not all domains can be oriented.
As a result, the multi-domain LCD of the present invention forms a dielectric frame in a region excluding the pixel region and forms an electric field induction window in the pixel region, so that the electric field is distorted and the multi-domain effect is achieved.
[0098]
Furthermore, the dielectric frame can be used as a light shielding layer or a spacer to simplify the manufacturing process and achieve a high aperture ratio.
Further, when performing the alignment treatment, a high response time and a stable LC structure can be obtained by the pretilt angle and the fixed energy. Thus, defects are removed, thereby improving brightness.
[0099]
It will be apparent to those skilled in the art that various modifications can be made to the liquid crystal display element of the present invention without departing from the spirit and scope of the present invention. Accordingly, this invention is intended to embrace alterations and modifications in this invention and its equivalents provided by the claims.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a liquid crystal display element according to related art.
FIG. 2 is a cross-sectional view similar to FIG.
FIG. 3 is a cross-sectional view showing a multi-domain liquid crystal display device according to the first embodiment of the invention.
FIG. 4 is a cross-sectional view showing a multi-domain liquid crystal display device according to a second embodiment of the present invention.
FIG. 5 is a cross-sectional view showing a multi-domain liquid crystal display device according to a third embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a multi-domain liquid crystal display device according to a fourth embodiment of the present invention.
FIG. 7 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 8 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 9 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 10 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 11 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 12 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 13 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 14 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 15 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 16 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 17 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 18 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 19 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 20 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 21 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 22 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 23 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 24 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 25 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 26 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 27 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 28 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 29 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 30 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 31 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 32 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 33 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 34 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 35 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 36 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 37 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 38 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 39 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 40 is a plan view showing a multi-domain liquid crystal display element according to a fifth embodiment of the invention.
41 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 40. FIG.
FIG. 42 is a plan view showing a multi-domain liquid crystal display element according to a sixth embodiment of the present invention.
43 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 42. FIG.
44 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 42. FIG.
FIG. 45 is a plan view showing a multi-domain liquid crystal display element according to a seventh embodiment of the present invention.
46 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 45. FIG.
47 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 45. FIG.
FIG. 48 is a plan view showing a multi-domain liquid crystal display element according to an eighth embodiment of the present invention.
49 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 48. FIG.
50 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 48. FIG.
51 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 48. FIG.
52 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 48. FIG.
53 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 48. FIG.
54 is a cross-sectional view showing the multi-domain liquid crystal display element of FIG. 48. FIG.
FIG. 55 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 56 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 57 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 58 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 59 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 60 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 61 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 62 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 63 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 64 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 65 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 66 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 67 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 68 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 69 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 70 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 71 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 72 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 73 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
74 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention. FIG.
FIG. 75 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 76 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 77 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
78 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention. FIG.
FIG. 79 is a plan view showing a multi-domain liquid crystal display device according to an embodiment of the present invention.
FIG. 80 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 81 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 82 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 83 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 84 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 85 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 86 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 87 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 88 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 89 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 90 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 91 is a plan view showing a multi-domain liquid crystal display element according to an embodiment of the present invention.
FIG. 92 is a sectional view showing a multi-domain liquid crystal display element according to the ninth embodiment of the invention.
93 is a cross-sectional view showing a multi-domain liquid crystal display element similar to FIG. 92. FIG.
FIG. 94 is a cross-sectional view showing a multi-domain liquid crystal display element similar to FIG.
95 is a cross-sectional view showing a multi-domain liquid crystal display element similar to FIG. 92. FIG.
FIG. 96 is a cross-sectional view showing a multi-domain liquid crystal display element according to the tenth embodiment of the invention.
97 is a cross-sectional view showing a multi-domain liquid crystal display element similar to FIG. 96. FIG.
FIG. 98 is a cross-sectional view showing a multi-domain liquid crystal display element similar to FIG.
FIG. 99 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
100 is a plan view similar to FIG. 99. FIG.
101 is a plan view similar to FIG. 99. FIG.
102 is a plan view similar to FIG. 99. FIG.
FIG. 103 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
104 is a plan view similar to FIG. 103. FIG.
105 is a plan view similar to FIG. 103. FIG.
106 is a plan view similar to FIG. 103. FIG.
FIG. 107 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
108 is a plan view similar to FIG. 107. FIG.
109 is a plan view similar to FIG. 107. FIG.
110 is a plan view similar to FIG. 107. FIG.
FIG. 111 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
112 is a plan view similar to FIG. 111. FIG.
113 is a plan view similar to FIG. 111. FIG.
114 is a plan view similar to FIG. 111. FIG.
FIG. 115 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
116 is a plan view similar to FIG. 115. FIG.
117 is a plan view similar to FIG. 115. FIG.
118 is a plan view similar to FIG. 115. FIG.
119 is a plan view similar to FIG. 115. FIG.
120 is a plan view similar to FIG. 115. FIG.
FIG. 121 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
122 is a plan view similar to FIG. 121. FIG.
123 is a plan view similar to FIG. 121. FIG.
FIG. 124 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
125 is a plan view similar to FIG. 124. FIG.
126 is a plan view similar to FIG. 124. FIG.
FIG. 127 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display element according to the embodiment of the present invention.
128 is a plan view similar to FIG. 127. FIG.
129 is a plan view similar to FIG. 127. FIG.
130 is a plan view similar to FIG. 127. FIG.
131 is a plan view similar to FIG. 127. FIG.
132 is a plan view similar to FIG. 127. FIG.
FIG. 133 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
134 is a plan view similar to FIG. 133. FIG.
135 is a plan view similar to FIG. 133. FIG.
136 is a plan view similar to FIG. 133. FIG.
137 is a plan view similar to FIG. 133. FIG.
138 is a plan view similar to FIG. 133. FIG.
FIG. 139 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display element according to the embodiment of the present invention.
140 is a plan view similar to FIG. 139. FIG.
141 is a plan view similar to FIG. 139. FIG.
142 is a plan view similar to FIG. 139. FIG.
143 is a plan view similar to FIG. 139. FIG.
144 is a plan view similar to FIG. 139. FIG.
145 is a plan view similar to FIG. 139. FIG.
146 is a plan view similar to FIG. 139. FIG.
FIG. 147 is a plan view showing an electric field induction window and a dielectric frame of the multi-domain liquid crystal display device according to the embodiment of the present invention.
FIG. 148 is a plan view similar to FIG. 147;
FIG. 149 is a plan view showing a multi-domain liquid crystal display element according to an eleventh embodiment of the present invention.
150 is a cross-sectional view of the multi-domain liquid crystal display element of FIG. 149. FIG.
[Explanation of symbols]
1 Gate bus wiring
3 Data bus wiring
13 Pixel electrode
17 Common electrode
23 Color filter layer
25 Shading layer
27 Auxiliary electrode
29 Overcoat layer
31 First substrate
33 Second substrate
35 Gate insulator
37 Passivation layer
43,51 Electric field induction window
53, 57 Dielectric frame

Claims (16)

  1. First and second substrates disposed opposite to each other;
    A liquid crystal layer disposed between the first and second substrates;
    A plurality of gate bus wires arranged in a first direction on the first substrate and a plurality of data bus wires arranged in a second direction on the first substrate to define a pixel region; ,
    A pixel electrode disposed in the pixel region;
    A color filter layer disposed on the second substrate;
    A common electrode disposed on the color filter layer;
    An alignment layer disposed on at least one substrate between the first and second substrates;
    A cross section that is connected to the pixel electrode and the common electrode directly or via the alignment layer and is formed as a plate-like body or a combination of plate-like bodies and perpendicular to the extending direction of the plate-like body And a dielectric frame that controls the alignment direction of liquid crystal molecules by distorting the electric field applied to the liquid crystal layer,
    A multi-domain liquid crystal display device , wherein a dielectric constant of the dielectric frame is equal to or lower than a dielectric constant of the liquid crystal layer .
  2.   2. The multi-domain liquid crystal display element according to claim 1, wherein the common electrode has an electric field induction window therein.
  3.   2. The multi-domain liquid crystal display device according to claim 1, wherein the pixel electrode has an electric field induction window therein.
  4. The dielectric frame is a photoacrylate (photoacrylate) 2. The multi-domain liquid crystal display element according to claim 1, further comprising a material selected from the group consisting of BCB and benzocyclobutene.
  5. The multi-domain liquid crystal display element according to claim 1, wherein the pixel region is divided into at least two parts, and liquid crystal molecules in the liquid crystal layer in each part are driven in different directions.
  6. The multi-domain liquid crystal display element according to claim 1, wherein the alignment layer is divided into at least two parts, and liquid crystal molecules in the alignment layer in each part are aligned in different directions.
  7. 7. The multi-domain liquid crystal display element according to claim 6, wherein at least one portion of the alignment layer is subjected to alignment treatment.
  8. 7. The multi-domain liquid crystal display device according to claim 6, wherein at least one portion of the alignment layer is rubbed.
  9. 9. The multi-domain liquid crystal display element according to claim 8, wherein the alignment layer includes a material selected from the group consisting of polyimide and polyamide-based compounds, PVA (polyvinyl alcohol), polyamic acid, and silicon dioxide.
  10. 7. The multi-domain liquid crystal display element according to claim 6, wherein at least one portion of the alignment layer is subjected to photo-alignment processing.
  11. The alignment layer is selected from the group consisting of PVCN (polyvinyl cinnamate), PSCN (polysiloxane cinnamate), and CelCN (cellulose cinnamate) compounds. The multi-domain liquid crystal display device according to claim 10, comprising a material to be manufactured.
  12. The multi-domain liquid crystal display element according to claim 1, wherein the liquid crystal layer includes liquid crystal molecules having positive dielectric anisotropy.
  13. The multi-domain liquid crystal display element according to claim 1, wherein the liquid crystal layer includes liquid crystal molecules having negative dielectric anisotropy.
  14. The multi-domain liquid crystal display device according to claim 1, wherein the liquid crystal layer contains a chiral dopant.
  15. 2. The multi-domain liquid crystal display element according to claim 1, further comprising a negative uniaxial film on at least one of the first and second substrates.
  16. 2. The multi-domain liquid crystal display device according to claim 1, further comprising a negative biaxial film on at least one substrate between the first and second substrates.
JP29739299A 1998-10-19 1999-10-19 Multi-domain liquid crystal display device Expired - Fee Related JP4171145B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
KR1998-43631 1998-10-19
KR1019980043631A KR100327443B1 (en) 1998-10-19 Multi-domain liquid crystal display device
KR1019980043920A KR100313948B1 (en) 1998-10-20 Multi-domain liquid crystal display device
KR1998-43920 1998-10-20
KR1998-48226 1998-11-11
KR1019980048226A KR100313949B1 (en) 1998-11-11 Multi-domain Liquid Crystal Display Device
KR1019980050708A KR100277929B1 (en) 1998-11-25 Multi-domain liquid crystal display device
KR1998-50708 1998-11-25
KR1019990005401A KR100323734B1 (en) 1999-02-18 1999-02-18 Multi-domain liquid crystal display device
KR1999-05401 1999-02-18

Publications (2)

Publication Number Publication Date
JP2000137227A JP2000137227A (en) 2000-05-16
JP4171145B2 true JP4171145B2 (en) 2008-10-22

Family

ID=36597903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29739299A Expired - Fee Related JP4171145B2 (en) 1998-10-19 1999-10-19 Multi-domain liquid crystal display device

Country Status (5)

Country Link
JP (1) JP4171145B2 (en)
DE (1) DE19950366B9 (en)
FR (1) FR2784758B1 (en)
GB (1) GB2343012B (en)
TW (1) TWI234680B (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6900869B1 (en) 1998-11-25 2005-05-31 Lg. Philips Lcd Co., Ltd. Multi-domain liquid crystal display device with particular dielectric structures
US6906768B1 (en) 1999-11-24 2005-06-14 Lg.Philips Lcd Co., Ltd. Multi-domain liquid crystal display device with particular dielectric structures
KR100357216B1 (en) * 1999-03-09 2002-10-18 엘지.필립스 엘시디 주식회사 Multi-domain liquid crystal display device
KR100587364B1 (en) * 2000-01-12 2006-06-08 엘지.필립스 엘시디 주식회사 Multi-domain liquid crystal display device
KR100606958B1 (en) * 2000-01-14 2006-07-31 엘지.필립스 엘시디 주식회사 Multi-domain liquid crystal display device
JP4499254B2 (en) * 2000-07-27 2010-07-07 ソニー株式会社 Liquid crystal display element
TW575774B (en) * 2000-09-05 2004-02-11 Sanyo Electric Co Liquid crystal display device
KR100685914B1 (en) * 2000-09-05 2007-02-23 엘지.필립스 엘시디 주식회사 Multi domain liquid crystal display device and method for fabricating the same
KR100656911B1 (en) * 2000-09-19 2006-12-12 삼성전자주식회사 a panel for liquid crystal display
KR100601454B1 (en) * 2000-10-04 2006-07-14 엘지.필립스 엘시디 주식회사 Multi-domain liquid crystal display and method for manufacturing thereof
KR100720093B1 (en) 2000-10-04 2007-05-18 삼성전자주식회사 liquid crystal display
JP4703145B2 (en) * 2000-10-31 2011-06-15 シャープ株式会社 Liquid crystal display
TW571165B (en) 2000-12-15 2004-01-11 Nec Lcd Technologies Ltd Liquid crystal display device
JP2003029283A (en) * 2001-07-17 2003-01-29 Toshiba Corp Liquid crystal display device
TW583425B (en) * 2001-08-02 2004-04-11 Sanyo Electric Co Liquid crystal display
US7113241B2 (en) 2001-08-31 2006-09-26 Sharp Kabushiki Kaisha Liquid crystal display and method of manufacturing the same
US20030067579A1 (en) * 2001-10-02 2003-04-10 Fujitsu Limited Liquid crystal display device and method of fabricating the same
JP4197404B2 (en) 2001-10-02 2008-12-17 シャープ株式会社 Liquid crystal display device and manufacturing method thereof
KR100956335B1 (en) 2002-05-09 2010-05-06 삼성전자주식회사 Liquid crystal display
KR100840326B1 (en) 2002-06-28 2008-06-20 삼성전자주식회사 a liquid crystal display and a thin film transistor array panel for the same
JP2006084518A (en) * 2004-09-14 2006-03-30 Sharp Corp Liquid crystal display device and method for manufacturing same
KR101071257B1 (en) * 2004-09-17 2011-10-10 삼성전자주식회사 Multi-domain thin film transistor array panel and liquid crystal display including the same
JP2006106101A (en) * 2004-09-30 2006-04-20 Sanyo Electric Co Ltd Liquid crystal display panel
JP2006126811A (en) * 2004-09-30 2006-05-18 Casio Comput Co Ltd Liquid crystal display element
KR101136398B1 (en) * 2004-10-23 2012-04-18 엘지디스플레이 주식회사 Autostereoscopic 3d display device and fabrication method thereof
JP4774727B2 (en) * 2004-11-26 2011-09-14 カシオ計算機株式会社 Liquid crystal display element
JP4618003B2 (en) * 2005-05-27 2011-01-26 ソニー株式会社 Liquid crystal device and electronic device
JP2007192917A (en) * 2006-01-17 2007-08-02 Toshiba Matsushita Display Technology Co Ltd Liquid crystal display device
TWI335456B (en) 2006-03-24 2011-01-01 Au Optronics Corp Liquid crystal display
CN101196634B (en) 2006-12-05 2010-05-19 胜华科技股份有限公司 Liquid crystal display panel
JP2009145424A (en) 2007-12-11 2009-07-02 Toshiba Matsushita Display Technology Co Ltd Liquid crystal display device
JP5526507B2 (en) * 2008-07-31 2014-06-18 カシオ計算機株式会社 Liquid crystal display element
JP5332548B2 (en) * 2008-11-26 2013-11-06 凸版印刷株式会社 Color filter and liquid crystal display device including the same
TWI409778B (en) * 2008-12-25 2013-09-21 Innolux Corp Liquid crystal display apparatus, liquid crystal display panel and driving method
JP2011033821A (en) * 2009-07-31 2011-02-17 Casio Computer Co Ltd Liquid crystal display element
JP2010097226A (en) * 2010-01-12 2010-04-30 Sony Corp Liquid crystal display element
JP5685410B2 (en) * 2010-09-17 2015-03-18 京セラディスプレイ株式会社 Liquid crystal display element
JP5689436B2 (en) * 2012-04-03 2015-03-25 シャープ株式会社 Liquid crystal display

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581608A (en) * 1983-06-13 1986-04-08 General Electric Company Multi-color liquid crystal display and system
JPS62159124A (en) * 1986-01-07 1987-07-15 Semiconductor Energy Lab Co Ltd Liquid crystal device
FR2614718B1 (en) * 1987-04-28 1989-06-16 Commissariat Energie Atomique Matrix screen display provided with a liquid crystal storage capacities
US5309264A (en) * 1992-04-30 1994-05-03 International Business Machines Corporation Liquid crystal displays having multi-domain cells
JP2975844B2 (en) * 1993-06-24 1999-11-10 三洋電機株式会社 The liquid crystal display device
JP2859093B2 (en) * 1993-06-28 1999-02-17 三洋電機株式会社 The liquid crystal display device
JP3234357B2 (en) * 1993-07-08 2001-12-04 三洋電機株式会社 The liquid crystal display device
JPH0736044A (en) * 1993-07-16 1995-02-07 Toshiba Corp Pixel orientation dividing type liquid crystal display element
EP0636917B1 (en) * 1993-07-27 1998-09-30 Sharp Kabushiki Kaisha Liquid crystal display
JP3005418B2 (en) * 1994-05-18 2000-01-31 三洋電機株式会社 The liquid crystal display device
US5673092A (en) * 1994-10-14 1997-09-30 Sharp Kabushiki Kaisha Liquid crystal device and method for fabricating the same
KR960024595A (en) * 1994-12-29 1996-07-20 윤종용 Multi-gradation display apparatus and method of the ferroelectric liquid crystal display element
US6372534B1 (en) * 1995-06-06 2002-04-16 Lg. Philips Lcd Co., Ltd Method of making a TFT array with photo-imageable insulating layer over address lines
JP2924757B2 (en) * 1996-01-12 1999-07-26 日本電気株式会社 The liquid crystal element
JP3649818B2 (en) * 1996-09-19 2005-05-18 富士通ディスプレイテクノロジーズ株式会社 The liquid crystal display device
US6344883B2 (en) * 1996-12-20 2002-02-05 Sharp Kabushiki Kaisha Liquid crystal display device and method for producing the same
GB2321718A (en) * 1997-01-31 1998-08-05 Nat Science Council LIquid crystal display
JPH10301112A (en) * 1997-04-24 1998-11-13 Sanyo Electric Co Ltd Reflection type liquid crystal display device
EP1111441B1 (en) * 1997-06-12 2009-12-02 Sharp Corporation Vertically-aligned (VA) liquid crystal display device
WO2000008521A1 (en) * 1998-08-06 2000-02-17 Konovalov Victor A Liquid-cristal display and the method of its fabrication

Also Published As

Publication number Publication date
FR2784758A1 (en) 2000-04-21
DE19950366A1 (en) 2000-05-04
GB2343012B (en) 2003-05-28
DE19950366B4 (en) 2010-05-06
GB2343012A (en) 2000-04-26
GB9924711D0 (en) 1999-12-22
JP2000137227A (en) 2000-05-16
FR2784758B1 (en) 2006-01-27
DE19950366B9 (en) 2010-10-14
TWI234680B (en) 2005-06-21

Similar Documents

Publication Publication Date Title
US7375781B2 (en) Liquid crystal display device
EP2105786B1 (en) Liquid crystal display
KR100379287B1 (en) Multi domain LCD device
JP2975844B2 (en) The liquid crystal display device
US6483566B2 (en) Liquid crystal display device with wide viewing angle
US5905556A (en) In-plane type liquid crystal display apparatus with improved picture quality
CN100510860C (en) In-plane switching mode liquid crystal display device with adjustable viewing angle and method for fabricating the same
KR100357216B1 (en) Multi-domain liquid crystal display device
DE19924545B9 (en) More domain liquid crystal display device
US6459465B1 (en) Liquid crystal panel for IPS mode liquid crystal display device and method for fabricating the same
US20040207793A1 (en) Liquid crystal display
US5852485A (en) Liquid crystal display device and method for producing the same
US6204905B1 (en) Vertical alignment liquid crystal display device having planarized substrate surface
US6297866B1 (en) In-plane switching mode liquid crystal display device
KR100480814B1 (en) Multi-domain liquid crystal display device
US6839114B2 (en) Substrate for in-plane switching mode liquid crystal display device with capacitors connected by extending lines and method for fabricating the same
JP3120751B2 (en) A liquid crystal display device in a horizontal electric field method
US7557886B2 (en) Liquid crystal display device and method of fabricating the same
US6630978B2 (en) Liquid crystal display device
KR100257370B1 (en) In plane switching mode liquid crystal display device
KR100504532B1 (en) Multi-domain liquid crystal display device
US7724336B2 (en) In-plane switching mode liquid crystal display device having first and second common electrode connection lines and first and second pixel electrode connection lines being formed on the same layer
US7599035B2 (en) Liquid crystal display device and method of driving the same
JP3378820B2 (en) Vertical alignment type liquid crystal display device
KR100257369B1 (en) In plane switching mode liquid crystal display device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20041005

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050412

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050708

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20050913

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20051209

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060119

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060125

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20060130

A912 Removal of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20060901

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080515

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080808

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110815

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120815

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130815

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees