WO2013021929A1 - 液晶ディスプレイ - Google Patents
液晶ディスプレイ Download PDFInfo
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- WO2013021929A1 WO2013021929A1 PCT/JP2012/069798 JP2012069798W WO2013021929A1 WO 2013021929 A1 WO2013021929 A1 WO 2013021929A1 JP 2012069798 W JP2012069798 W JP 2012069798W WO 2013021929 A1 WO2013021929 A1 WO 2013021929A1
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- liquid crystal
- slit
- straight line
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- crystal display
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- 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
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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- 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
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
Definitions
- the present invention relates to a liquid crystal display. More specifically, the present invention relates to a liquid crystal display suitable for a horizontal electric field type liquid crystal display.
- An active matrix liquid crystal display using an active element typified by a thin film transistor (TFT) is widely used as a display device because it is thin and lightweight and has a high image quality comparable to a cathode ray tube.
- TFT thin film transistor
- the display methods of such a liquid crystal display are roughly classified into the following two display methods.
- One is a vertical electric field system.
- a liquid crystal layer is driven by an electric field in a direction substantially perpendicular to the substrate surface, and light incident on the liquid crystal layer is modulated and displayed.
- a TN (Twisted Nematic) mode, an MVA (Multi-domain Vertical Alignment) mode, and the like are known.
- the other is a horizontal electric field method.
- the liquid crystal layer is driven by an electric field in a direction substantially parallel to the substrate surface.
- an IPS (In-plane Switching) mode As the horizontal electric field mode liquid crystal mode, an IPS (In-plane Switching) mode, an FFS (Fringe Field Switching) mode, and the like are known.
- a plurality of gate wirings and data wirings defining a unit pixel that is divided into first, second, and third regions orthogonal to each other on a first substrate, and a gate wiring And the thin film transistor formed at the intersection of the data wiring, the common wiring parallel to the gate wiring, the branch from the common wiring, the first area at the first angle, the second area at the second angle, and the third area.
- Liquid crystal formed between the common electrode bent at the third angle, the pixel electrode connected to the drain electrode of the thin film transistor and formed in parallel with the common electrode, and the first substrate and the second substrate facing the first substrate.
- a liquid crystal display including a layer is disclosed (for example, see Patent Document 1).
- a horizontal electric field type liquid crystal display panel in which slit-like openings are formed in a “ ⁇ ” shape and the slit-like openings in different directions are connected is disclosed (for example, see Patent Document 2).
- a liquid crystal display including an electrode formed with for example, see Patent Document 3).
- a horizontal electric field type liquid crystal display includes an electrode (for example, a pixel electrode) in which a plurality of slits parallel to each other is formed, and a horizontal electric field is generated using the electrode.
- the panel transmittance varies depending on the width (S) of the slit, the width (L) of the electrode (linear portion) between the slits, and the sum (S + L) thereof.
- the panel transmittance increases as the sum of L and S decreases.
- L and S cannot be made smaller than a predetermined value, and there is a limit to the actually obtained panel transmittance. This is due to the following reason. This is because there is a limit to the minimum width of the pattern that can be formed on the photomask used in the photolithography process when forming the slit and the minimum width of the pattern that can be formed by an apparatus that is actually used in the photolithography process.
- FIG. 10 is a schematic plan view of an active matrix substrate of the FFS mode liquid crystal display according to the first comparative embodiment.
- FIG. 9 of Patent Document 2 and FIG. 6 of Patent Document 3 a form similar to Comparative Form 1 is shown.
- a liquid crystal display according to Comparative Example 1 includes an active matrix substrate (array substrate) 510, a counter substrate (not shown) facing the array substrate, and a horizontal alignment type liquid crystal layer (not shown) provided between the two substrates. Z)).
- the array substrate 510 includes a data bus line 513, a gate bus line 551, a TFT 553, a common electrode 515, an insulating film (not shown) formed on the common electrode 515, and this And a pixel electrode 517 formed on the insulating film.
- the initial alignment direction of the liquid crystal molecules that is, the alignment direction when no voltage is applied, is set in the vertical direction of FIG.
- Each pixel electrode 517 has a plurality of slits 530 parallel to each other, and the common electrode 515 faces the slit 530.
- the pixel electrode 517 includes a plurality of linear portions 518 parallel to each other and connection portions 519 and 520 that connect the linear portions to each other.
- the slit 530 has a vertically symmetrical shape, and each slit 530 connects the straight portions (main portions) 531 and 532 and the main portions 531 and 532 to each other, and connects the two straight portions in a V shape.
- a formed portion (V-shaped portion) 533 and linear portions (sub-portions) 534 and 535 provided between main portions 531 and 532 and connecting portions 519 and 520 are included.
- the slits 530 are respectively between the sub-portion 534 and the main portion 531, between the main portion 531 and the V-shaped portion 533, between the main portion 532 and the V-shaped portion 533, and between the main portion 532 and the sub-portion.
- the slits 530 each have five bent portions.
- the angle formed by the V-shaped portion 533 and the sub-portions 534 and 535 with respect to the vertical direction is set larger than that of the main portions 531 and 532.
- the V-shaped portion 533 and the sub-portions 534 and 535 are auxiliary portions, and the alignment of most liquid crystal molecules included in the liquid crystal layer in the region including the main portions 531 and 532 is controlled.
- the rotation direction of the liquid crystal molecules is reversed, so that the alignment of the liquid crystal molecules collides between the two regions. Therefore, by providing a V-shaped portion 533 having a relatively large angle with respect to the vertical direction between the two regions, the liquid crystal molecules are easily aligned between the two regions. Further, in the vicinity of the connection portion 519, there is a possibility that the alignment of liquid crystal molecules is disturbed due to an electric field generated from the connection portion 519.
- a sub-part 534 having a relatively large angle with respect to the vertical direction between the connection part 519 and the main part 531 it is possible to prevent the alignment of liquid crystal molecules from being disturbed in the vicinity of the connection part 519.
- a sub-portion 535 is also provided for the same reason.
- a pressure is locally applied to the screen of the liquid crystal display from the outside (for example, the screen is pressed with a finger), and the local disorder of the orientation of liquid crystal molecules caused by the pressure, that is, the local display Even if disturbances occur, these disturbances can be recovered quickly.
- Comparative Example 1 has the following problems. Since the slits 530 are provided in parallel with each other and have the same planar shape, the width S of the V-shaped portion 533 and the sub-portions 534 and 535 is smaller than the width S of the main portions 531 and 532. Further, the width L of the linear portion 518 of the pixel electrode 517 is narrower in the portion where the V-shaped portion 533 and the sub-portions 534 and 535 are formed than in the portion where the main portions 531 and 532 are formed.
- L and S in the region including the main portions 531 and 532 are reduced to an allowable limit in the process, the region including the V-shaped portion 533 and the sub portions 534 and 535 are reduced. It exceeds the limit that L and S allow in the included region.
- various problems due to process variations may occur. Specifically, for example, brightness may vary from panel to panel, or even if the panels are the same, display unevenness may occur. Possible causes of such problems include mask misalignment, pattern width change, and the like.
- L and S are set within a range that does not exceed the allowable limit in the region including the V-shaped portion 533 and the region including the sub-portions 534 and 535, In the region including the main parts 531, 532, L and S increase, resulting in a decrease in display performance, for example, a decrease in panel transmittance.
- the present invention has been made in view of the above situation, and an object of the present invention is to provide a liquid crystal display capable of suppressing defects caused by process variations and improving display performance.
- a plurality of slits parallel to each other extend in a first direction.
- the other ends of the plurality of first straight portions are arranged on the same straight line, and the slit at one end in the pixel among the plurality of slits is the first slit (however, adjacent to the first slit)
- the slit is bent so that the first straight line portion and the second straight line portion are closer to the first slit), and the length of the first straight line portion is shorter as the slit is farther from the first slit.
- L and S in the region including the first straight line portion and L and S in the region including the second straight line portion can be reduced.
- L and S of the region including the second straight line portion are It has been found that even if the size is close to the allowable limit, it is possible to prevent the L and S of the region including the first straight line portion from exceeding the allowable limit. As a result, it has been found that the slit pattern can be prevented from changing due to process variations, and that the transmittance can be improved. The invention has been reached.
- one aspect of the present invention includes a first substrate, a second substrate facing the first substrate, a liquid crystal molecule provided between the first substrate and the second substrate.
- a liquid crystal layer, and the first substrate includes a first electrode, an insulating film provided on the first electrode, and a second electrode provided on the insulating film,
- a plurality of slits provided in the pixel are formed in the second electrode, the first electrode faces the plurality of slits, and the plurality of slits are parallel to each other, and the plurality of slits Are respectively connected to one end of the first linear portion, the second linear portion extending in the second direction, the first linear portion and the second linear portion extending in the first direction.
- a plurality of first linear portions including a bent portion bent in a region where the linear portions are connected to each other.
- the other end is on the same straight line, and when the slit at one end in the pixel is the first slit among the plurality of slits, the slit next to the first slit is the first straight line.
- the portion and the second straight portion are bent so as to approach the first slit, and the longer the slit from the first slit, the shorter the length of the first straight portion is the shorter liquid crystal display (hereinafter, It is also called a liquid crystal display according to the present invention.
- the configuration of the liquid crystal display according to the present invention is not particularly limited by other components as long as such components are formed as essential.
- the straight line is not a specific member but a virtual line.
- the first direction and the second direction are preferably different from the initial alignment direction. Thereby, the orientation of liquid crystal molecules can be controlled more effectively.
- An angle formed between the first direction and the initial alignment direction is larger than an angle formed between the second direction and the initial alignment direction, and the first linear portion is larger than the second linear portion. Short is preferred. Thereby, the 1st straight line part can be made to function effectively as an auxiliary part (subpart), and the 2nd straight line part as a main part.
- the angle between the first direction and the initial alignment direction is 20 to 40 °
- the angle between the second direction and the initial alignment direction is 3 to 10 °
- the straight line is It is a first straight line
- the bent portions of the plurality of slits are on the same second straight line
- an angle formed by the first straight line and the second straight line is 5 to 15 °. Is preferred. Thereby, it is possible to effectively achieve both the recovery of the alignment disorder caused by the pressing and the improvement of the transmittance.
- the second straight line is not a specific member but a virtual line.
- Each of the plurality of slits further includes a third linear portion connected to the other end of the first linear portion and extending in a third direction, and the first linear portion and the third linear portion are: It may be provided in a V shape. This form is suitable for a form in which a V-shaped part is provided at the center of the pixel.
- an angle formed by the third direction and the initial alignment direction is 20 to 40 °
- each of the plurality of slits is the first slit.
- the fourth linear portion extending in the fourth direction and the third linear portion and the fourth linear portion are connected to the end of the third linear portion that is not connected to the first linear portion.
- the third straight line is not a specific member but a virtual line.
- the second electrode includes three or more linear portions adjacent to the plurality of slits and a connection portion that connects the three or more linear portions to each other, and the first linear portion includes the connection portion. May be adjacent to This form is suitable for a form in which a sub-part is provided adjacent to the electrode connection part.
- the liquid crystal display which can suppress the malfunction resulting from the dispersion
- FIG. 2 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to Embodiment 1.
- FIG. 3 is a schematic plan view showing a common electrode provided on the active matrix substrate of Embodiment 1.
- FIG. 2 is a schematic cross-sectional view of an active matrix substrate taken along line A-A ′ shown in FIG. 1.
- FIG. 3 is a schematic plan view illustrating an enlarged vicinity of a V-shaped portion of the pixel electrode according to the first embodiment.
- 6 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to Embodiment 2.
- FIG. FIG. 6 is a schematic plan view illustrating an enlarged vicinity of a sub part of a pixel electrode according to a second embodiment.
- FIG. 6 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to Embodiment 3.
- FIG. FIG. 10 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to a modification of the third embodiment. 10 is a schematic plan view showing a common electrode provided on an active matrix substrate of a modification of Embodiment 3.
- FIG. FIG. 6 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to Comparative Example 1.
- the “pixel” means a region surrounded by two adjacent gate bus lines and two adjacent data bus lines.
- the width means a width in a direction orthogonal to the longitudinal direction.
- the following embodiments can be applied to display devices such as televisions, personal computers, mobile phones, car navigation systems, and information displays.
- the first embodiment is a multi-domain (two-domain) FFS mode liquid crystal display.
- FIG. 1 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to the first embodiment.
- the liquid crystal display 110 according to the first embodiment includes an active matrix substrate (array substrate) 10, a counter substrate 70 facing the substrate 10, and a horizontal alignment type liquid crystal layer 80 provided between the two substrates.
- the array substrate 10 includes an insulating substrate 11, a data bus line 13, a gate bus line 51, a gate insulating film 12, a TFT 53, a first insulating film 14, and a second insulating film.
- the common electrode 15 is formed so as to substantially cover the display area.
- a plurality of slits (longitudinal openings) 30 that are parallel to each other are formed in the pixel electrode 17, and the common electrode 15 faces the slit 30.
- the initial alignment direction of the liquid crystal molecules is set in the vertical direction in FIG. 1 (the arrow direction in FIG. 1).
- the counter substrate 70 includes an insulating substrate 21, a color filter 23, and a black matrix 22.
- a horizontal alignment film (not shown) is provided on the surface of the counter substrate 70 on the liquid crystal layer 80 side.
- the color filter 23 and the black matrix 22 may be provided not on the counter substrate 70 side but on the active matrix substrate 10 side.
- the structure of the pixel electrode 17 in the first embodiment will be further described in detail.
- the pixel electrode 17 includes three or more linear portions 18 that are parallel to each other, and connection portions 19 and 20 that connect the linear portions 18 to each other.
- the slit 30 has a vertically symmetrical shape, and each slit 30 connects the straight portions (main portions) 31, 32 and the main portions 31, 32 to each other, and the two straight portions 36, 37 are formed in a V shape. And a portion (V-shaped portion) 33 formed by coupling.
- the main portions 31 and 32 correspond to the second straight portion
- the straight portions 36 and 37 correspond to the first or third straight portion.
- the slit 30 is bent between the main portion 31 and the V-shaped portion 33 and between the main portion 32 and the V-shaped portion 33, and the V-shaped portion 33 further has one bent portion.
- each of the slits 30 has three bent portions. Further, as shown in FIG.
- the angle (a °) with respect to the vertical direction of the V-shaped portion 33 (the initial alignment direction of liquid crystal molecules) is relative to the vertical direction of the main portions 31 and 32 (the initial alignment direction of liquid crystal molecules). It is set larger than the angle (b °) formed.
- the V-shaped portion 33 (straight line portions 36 and 37) is an auxiliary portion, and the alignment of most liquid crystal molecules included in the liquid crystal layer 80 is controlled in the region including the main portions 31 and 32.
- the orientation of the liquid crystal molecules can be controlled more effectively. For example, a pressure is locally applied to the screen of the liquid crystal display 110 from the outside (for example, the screen is pressed with a finger). Even if local disturbances in the orientation of the liquid crystal molecules due to the pressure, that is, local disturbances in display, these disturbances can be quickly recovered.
- a portion of the data bus line 13 that faces the slit 30 is formed along the slit 30.
- the slit at the left end in FIG. 1 is the first slit among the slits 30, the length of the straight portions 36 and 37 that form the V-shaped portion 33 increases as the slit is further from the first slit. Shorter.
- the first slit is a slit at one end in the pixel, and the slit adjacent to the first slit is bent so that the main portion 31 and the linear portion 36 approach the first slit.
- the slit adjacent to the first slit is bent so that the main portion 32 and the linear portion 37 approach the first slit.
- the lengths of the pixel electrode portions adjacent to the straight portion 36 or the straight portion 37 are 3 ⁇ m, 4 ⁇ m, 5 ⁇ m, and 6 ⁇ m, respectively, in order from the right in FIG. That is, as shown in FIG. 4, the V-shaped portion 33 is formed so as to decrease from the left to the right in the center portion of the pixel electrode 17.
- a bent portion between each main portion 31 and the V-shaped portion 33 in the slit 30, that is, one end of the straight portion 36 is on the same second virtual straight line (a straight line corresponding to the second or third straight line).
- the bent portion between each main portion 32 and the V-shaped portion 33 in the slit 30, that is, one end of the linear portion 37 is on the same third virtual straight line (a straight line corresponding to the second or third straight line).
- the vertex of each V-shaped portion 33 in the slit 30, that is, the other ends of the straight portions 36 and 37 are on the same first virtual straight line (a straight line corresponding to the first straight line).
- the first virtual straight line and the second virtual straight line form a predetermined angle (c °).
- the first virtual straight line and the third virtual straight line form a predetermined angle (c °).
- the bent portion between the main portion 31 and the V-shaped portion 33 and the bent portion between the main portion 32 and the V-shaped portion 33 are closer to the first virtual straight line.
- the difference between L and S in the region including the main portions 31 and 32 and L and S in the region including the V-shaped portion 33 (straight line portions 36 and 37) can be reduced.
- L and S in both regions can be substantially the same.
- the width S of the V-shaped portion 533 and the sub-portions 534 and 535 is smaller than the width S of the main portions 531 and 532.
- the width L of the linear portion 518 of the pixel electrode 517 is narrower in the portion where the V-shaped portion 533 and the sub-portions 534 and 535 are formed than in the portion where the main portions 531 and 532 are formed.
- the limit that the total of the width L and the width S in the region including the V-shaped portion 533 is allowed. It is necessary to design to become. For example, when the allowable limits of the width L and the width S are 2.5 ⁇ m and 4.0 ⁇ m (the total of the width L and the width S is 6.5 ⁇ m), the main parts 531 and 532 are formed.
- the width of the electrode forming the V-shaped portion 533 is 2
- the width S of the V-shaped portion 533 is about 3.4 ⁇ m, which is smaller than the allowable limit.
- the width L and the width S are set within a range that does not exceed the allowable limit in the region including the V-shaped portion 533.
- the width L and the width S are increased in the region including, and the display performance is lowered, for example, the panel transmittance is reduced.
- the L and S in the region including the main part are close to the allowable limit, the L and S in the region including the V-shaped portion are prevented from exceeding the allowable limit. Can do.
- the slit pattern can be prevented from changing due to process variations, and the transmittance can be improved.
- L and S in the region including the main portions 31 and 32 and L and S in the region including the V-shaped portion 33 (straight line portions 36 and 37) are reduced to an allowable limit in the process.
- the transmittance of the liquid crystal display 110 of the first embodiment is 4% higher than the liquid crystal display 510 of the first comparative embodiment shown in FIG.
- the size of the angle a ° and the angle b ° is not particularly limited, and can be set to an angle at which an appropriate viewing angle can be obtained as a multi-domain liquid crystal display, and suppression of occurrence of disclination and pressure resistance can be obtained. Good.
- the angle a ° is preferably set to 20 to 40 °
- the angle b ° is preferably set to 3 to 10 °.
- the size of the angle c ° is not particularly limited, but is preferably set so that the sum of L and S is the minimum manufacturable value in the entire slit, specifically, 5 to 15 °. It is preferably set.
- Embodiment 1 The structure of the pixel electrode 17 in Embodiment 1 has been described above. Hereinafter, other structures, materials of the respective members, and manufacturing methods will be described.
- the TFT 53 is a switching element including a semiconductor layer 54, a gate electrode 55a, a source electrode 55b, and a drain electrode 55c.
- the gate electrode 55 a of the TFT 53 is formed by extracting a part of the gate bus line 51.
- the source electrode 55b and the drain electrode 55c of the TFT 53 are connected to the semiconductor layer 54, respectively.
- the drain electrode 55 c of the TFT 53 is connected to the pixel electrode 17 through the contact hole 71.
- the gate electrode 55a and the semiconductor layer 54 overlap each other with the gate insulating film 12 interposed therebetween.
- the source electrode 55b is connected to the drain electrode 55c through the semiconductor layer 54, and the amount of current flowing through the semiconductor layer 54 is adjusted by a scanning signal input to the gate electrode 55a through the gate bus line 51, and the data bus line 13, transmission of data signals input in order of the source electrode 55 b, the semiconductor layer 54, the drain electrode 55 c, and the pixel electrode 17 is controlled.
- a common signal maintained at a constant value is supplied to the common electrode 15.
- the common electrode 15 is formed on one surface regardless of pixel boundaries.
- the common electrode 15 has an opening in a region overlapping with a region where the drain electrode 55c and the pixel electrode 17 are connected.
- a transparent material such as glass or plastic is preferably used as the material of the insulating substrates 11 and 21.
- materials for the gate insulating film 12, the first insulating film 14, the second insulating film 16a, and the third insulating film 16b transparent materials such as silicon nitride, silicon oxide, and photosensitive acrylic resin are preferably used.
- a silicon nitride film is formed by a plasma induced chemical vapor deposition (Plasma Enhanced Chemical Vapor Deposition: PECVD) method.
- PECVD plasma induced chemical vapor deposition
- a photosensitive acrylic resin film is formed thereon by a die coating (coating) method.
- the holes provided in the insulating films 14, 16 and 16b for forming the contact portions can be formed by performing dry etching (channel etching).
- Various wirings and electrodes constituting the gate bus line 51, the data bus line 13, or the TFT 53 are made of a metal such as titanium, chromium, aluminum, molybdenum, or an alloy thereof by a single layer or a plurality of layers by sputtering or the like. Then, the film can be formed by patterning by a photolithography method or the like. About these various wiring and electrodes formed on the same layer, the manufacturing efficiency is improved by using the same material.
- the semiconductor layer 54 of the TFT 53 is composed of, for example, a high-resistance semiconductor layer made of amorphous silicon, polysilicon, or the like, and a low-resistance semiconductor layer made of n + amorphous silicon or the like obtained by doping amorphous silicon with an impurity such as phosphorus. Further, as the semiconductor layer 54, an oxide semiconductor layer such as zinc oxide may be used.
- the shape of the semiconductor layer 54 can be determined by forming a film by a PECVD method or the like and then patterning the film by a photolithography method or the like.
- the pixel electrode 17 and the common electrode 15 are formed by sputtering a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), tin oxide (SnO), or an alloy thereof.
- the film can be formed by forming a single layer or a plurality of layers by a method or the like and then performing patterning using a photolithography method.
- the slit 30 provided in the pixel electrode 17 and the opening provided in the common electrode 15 can also be formed simultaneously with patterning.
- a photosensitive resin (color resist) that transmits light corresponding to each color is preferably used.
- the material of the black matrix 22 is not particularly limited as long as it has a light shielding property, but a resin material containing a black pigment or a metal material having a light shielding property is preferably used.
- the active matrix substrate 10 and the counter substrate 70 thus manufactured are bonded using a sealing material after a plurality of columnar spacers made of an insulating material are provided on one substrate.
- a liquid crystal layer 80 is formed between the active matrix substrate 10 and the counter substrate 70.
- the dropping method is used, the liquid crystal material is dropped before the substrates are bonded, and the vacuum injection method is used. The liquid crystal material is injected after the substrates are bonded together.
- the liquid crystal layer 80 includes liquid crystal molecules (preferably nematic liquid crystal molecules) having positive dielectric anisotropy.
- a liquid crystal display panel is completed by affixing a polarizing plate, retardation film, etc. on the surface on the opposite side to the liquid crystal layer 80 side of each board
- a gate driver, a source driver, a display control circuit, and the like are mounted on the liquid crystal display panel, and a liquid crystal display suitable for the application is completed by combining a backlight and the like.
- the structure of the liquid crystal display panel according to the first embodiment is, for example, an optical microscope (manufactured by Olympus, semiconductor / FPD inspection microscope MX61L) and an energy dispersive X-ray spectroscopic analyzer type scanning transmission electron microscope (STEM-EDX: Scanning Transmission). It can be confirmed and measured using Electron Microscope Energy Dispersive X-ray Spectroscope, HD-2700 manufactured by Hitachi High-Technologies Corporation.
- Embodiment 2 is a multi-domain (two-domain) FFS mode liquid crystal display.
- FIG. 5 is a schematic plan view of an active matrix substrate of the FFS mode liquid crystal display according to the second embodiment.
- a total of three bent portions are formed between the main portion 31 and the V-shaped portion 33, between the main portion 32 and the V-shaped portion 33, and the V-shaped portion 33.
- linear portions (sub-portions) 134 and 135 are further formed, and the main portion 131 and the sub-portion 134 are formed.
- bent portions are formed between the main portion 132 and the sub portion 135, so that a total of five bent portions are formed. Since other configurations are the same as those of the first embodiment, description thereof is omitted here.
- the structure of the pixel electrode 117 of the liquid crystal display 210 of Embodiment 2 will be described.
- the pixel electrode 117 is formed with a plurality of slits 130 that are parallel to each other.
- the pixel electrode 117 includes three or more linear portions 118 that are parallel to each other, and connection portions 119 and 120 that connect the linear portions 118 to each other. including.
- the slit 130 has a vertically symmetric shape, and each slit 130 connects the straight portions (main portions) 131 and 132 and the main portions 131 and 132 to each other, and the two straight portions 136 and 137 are formed in a V shape. And a portion (V-shaped portion) 133 formed by coupling.
- the main portions 131 and 132 correspond to the second straight portion, and the straight portions 136 and 137 correspond to the first or third straight portion.
- the angle (a °) formed with respect to the vertical direction of the V-shaped portion 133 is set larger than the angle (b °) formed with respect to the vertical direction of the main portions 131 and 132.
- the slit 130 includes linear portions (sub-portions) 134 and 135 provided between the main portions 131 and 132 and the connection portions 119 and 120, respectively.
- the sub-parts 134 and 135 correspond to the first straight part.
- the angle (d °) formed by the sub-parts 134, 135 and the initial alignment direction of liquid crystal molecules (double arrows in FIG. 5) is the angle (b) formed with respect to the vertical direction of the main parts 131, 132. It is set larger than °).
- the sub-parts 134 and 135 are auxiliary parts similar to the V-shaped part 133 (straight line parts 136 and 137), and the alignment of most liquid crystal molecules contained in the liquid crystal layer 80 in the region including the main parts 131 and 132. Is controlled. In the vicinity of the connection portion 119, the alignment of liquid crystal molecules may be disturbed due to an electric field generated from the connection portion 119. Thus, by providing the sub-part 134 having a relatively large angle with respect to the vertical direction between the connection part 119 and the main part 131, it is possible to suppress the disorder of the alignment of the liquid crystal molecules in the vicinity of the connection part 119. A sub-part 135 is also provided for the same reason.
- the slit at the left end in FIG. 1 has been described as the first slit, but in this embodiment, Focusing on the sub-parts 134 and 135, the slit at the right end in FIG. 5 corresponds to the first slit.
- the first slit is a slit at one end in the pixel, and the slit adjacent to the first slit is bent so that the main portion 131 and the sub-portion 134 approach the first slit. Further, the slit adjacent to the first slit is bent so that the main portion 132 and the sub-portion 135 approach the first slit.
- the length of the sub-parts 134 and 135 becomes shorter as the slit is farther from the first slit.
- the lengths of the pixel electrode portions adjacent to the sub-portion 134 or the sub-portion 135 are 5.5 ⁇ m, 4 ⁇ m, 2.5 ⁇ m, and 1 ⁇ m in order from the right in FIG.
- One end of each sub-part 134, 135 in the slit 130 is on the same second virtual straight line (a straight line corresponding to the second straight line), and the other end of the sub-parts 134, 135 is the same first virtual On the straight line (a straight line corresponding to the first straight line).
- the first virtual straight line and the second virtual straight line form a predetermined angle (e °).
- the bent portion between the sub portion 134 and the main portion 131 and the bent portion between the sub portion 135 and the main portion 132 are closer to the first imaginary straight line.
- the difference between L and S in the region including the main portions 131 and 132 and L and S in the region including the sub portions 134 and 135 can be reduced, and L and S in both regions can be reduced.
- S can be substantially the same as each other.
- the width S of the sub-parts 534 and 535 is smaller than the width S of the main parts 531 and 532.
- the liquid crystal display 510 of the comparative form 1 when the sum of the width L and the width S is to be made as small as possible, the sum of the width L and the width S in the region including the sub-parts 534 and 535 is allowed. It is necessary to design so that For example, when the allowable limits of the width L and the width S are 2.5 ⁇ m and 4.0 ⁇ m (the total of the width L and the width S is 6.5 ⁇ m), the main parts 531 and 532 are formed.
- the width of the electrodes forming the sub portions 534 and 535 is The width S of the sub portions 534 and 535 is about 4.1 ⁇ m, which is smaller than the allowable limit.
- the width L and the width S are set within a range that does not exceed the allowable limit in the region including the sub-parts 534 and 535. In the region including 532, the width L and the width S become large, and the display performance deteriorates, for example, the panel transmittance decreases.
- the difference between the width L and the width S of the region including the main portions 131 and 132 and the width L and the width S of the region including the sub portions 134 and 135 can be reduced. Even if L and S of the region including the main part are close to the allowable limit, it is possible to prevent L and S of the region including the sub part from exceeding the allowable limit. As a result, the slit pattern can be prevented from changing due to process variations, and the transmittance can be improved. Specifically, L and S in the region including the main parts 131 and 132 and L and S in the region including the sub parts 134 and 135 are reduced to an allowable limit in the process, and are substantially the same value. Is set, the transmittance of the liquid crystal display 210 of the second embodiment is 8% higher than that of the liquid crystal display 510 of the first comparative embodiment shown in FIG.
- the size of the angle d ° is not particularly limited, and may be set to an angle at which an appropriate viewing angle can be obtained as a multi-domain liquid crystal display, suppression of occurrence of disclination, and pressure resistance can be obtained.
- the angle d ° is preferably set to 20 to 40 °.
- the size of the angle e ° is not particularly limited, but is preferably set so that the sum of L and S is a minimum value that can be produced in the entire slit, specifically, 5 to 15 °. It is preferably set.
- Embodiment 3 is a monodomain FFS mode liquid crystal display.
- FIG. 7 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to the third embodiment.
- the V-shaped portions 33 and 133 are formed as shown in FIGS. 1 and 5, respectively.
- the V-shaped portion is not formed.
- the main portion 231 and the linear portions (sub-portions) 234 and 235 are formed, and bent portions are formed between the main portion 231 and the sub-portion 234 and between the main portion 231 and the sub-portion 235, A total of two bends are formed. Since other configurations are the same as those of the first embodiment, description thereof is omitted here.
- the structure of the pixel electrode 217 of the liquid crystal display 310 of Embodiment 3 will be described.
- the pixel electrode 217 is formed with a plurality of slits 230 that are parallel to each other.
- the pixel electrode 217 includes three or more linear portions 218 that are parallel to each other, and connection portions 219 and 220 that connect the linear portions 218 to each other. including.
- the initial alignment direction of the liquid crystal molecules is set in a direction slightly inclined from the vertical direction in FIG. 7 (the arrow direction in FIG. 7).
- the slit 230 has a point-symmetric shape, and includes linear portions (sub-portions) 234 and 235 provided between the main portion 231 and the connection portions 219 and 220, respectively.
- the main portion 231 corresponds to the second straight portion
- the sub portions 234 and 235 correspond to the first straight portion.
- the angle formed between the sub-portions 234 and 235 and the initial alignment direction of the liquid crystal molecules is set larger than the angle formed between the main portion 231 and the initial alignment direction of the liquid crystal molecules.
- the angle formed by the sub-portion 234 and the initial alignment direction of the liquid crystal molecules is substantially the same as the angle formed by the sub-portion 235 and the initial alignment direction of the liquid crystal molecules.
- the sub part 234 extends in the direction opposite to the sub part 235.
- the sub portions 234 and 235 are auxiliary portions, and the alignment of most liquid crystal molecules included in the liquid crystal layer 80 is controlled in the region including the main portion 231. In the vicinity of the connection portion 219, the alignment of liquid crystal molecules may be disturbed due to an electric field generated from the connection portion 219. Therefore, by providing a sub-part 234 having a relatively large angle with respect to the vertical direction between the connection part 219 and the main part 231, it is possible to prevent the alignment of liquid crystal molecules from being disturbed in the vicinity of the connection part 219.
- a sub-portion 235 is also provided for the same reason.
- the slit at the right end in FIG. 7 corresponds to the first slit.
- the first slit is a slit at one end in the pixel, and the slit adjacent to the first slit is bent so that the main portion 231 and the sub portion 234 approach the first slit. The longer the slit is from the first slit, the shorter the sub-part 234 is.
- One end of each sub-part 234 in the slit 230 is on the same second virtual straight line (a straight line corresponding to the second straight line), and the other end of the sub-part 234 is the same first virtual straight line (above On the straight line corresponding to the first straight line).
- the first virtual straight line and the second virtual straight line form a predetermined angle.
- the farther from the first slit the closer the bent part between the sub part 234 and the main part 231 is to the first virtual straight line.
- the slit at the left end in FIG. 7 corresponds to the first slit.
- One end of each sub-part 235 in the slit 230 is on the same second virtual straight line (a straight line corresponding to the second straight line), and the other end of the sub-part 235 is the same first virtual straight line (above On the straight line corresponding to the first straight line).
- the first virtual straight line and the second virtual straight line form a predetermined angle. The farther from the first slit, the closer the bent part between the sub part 235 and the main part 231 is to the first virtual straight line.
- the difference between L and S in the region including the main portion 231 and L and S in the region including the sub portions 234 and 235 can be reduced, and L and S in both regions can be reduced. It can also be substantially the same as each other.
- the inter-slit electrodes are all formed in substantially the same shape, and the first virtual line and the second virtual line are formed. There is no angle formed by the straight line.
- the width S of the sub-parts 534 and 535 is smaller than the width S of the main parts 531 and 532.
- the liquid crystal display 510 of the comparative form 1 when the sum of the width L and the width S is to be made as small as possible, the sum of the width L and the width S in the region including the sub-parts 534 and 535 is allowed. It is necessary to design so that For example, when the allowable limits of the width L and the width S are 2.5 ⁇ m and 4.0 ⁇ m (the total of the width L and the width S is 6.5 ⁇ m), the main parts 531 and 532 are formed.
- the width of the electrodes forming the sub portions 534 and 535 is The width S of the sub portions 534 and 535 is about 4.1 ⁇ m, which is smaller than the allowable limit.
- the width L and the width S are set within a range that does not exceed the allowable limit in the region including the sub-parts 534 and 535. In the region including 532, the width L and the width S become large, and the display performance deteriorates, for example, the panel transmittance decreases.
- the difference between the width L and width S of the region including the main portion 231 and the width L and width S of the region including the sub portions 234 and 235 can be reduced. Even if L and S of the region including the part are close to the allowable limit, it is possible to prevent the L and S of the region including the sub part from exceeding the allowable limit. As a result, the slit pattern can be prevented from changing due to process variations, and the transmittance can be improved. Specifically, L and S in the region including the main portion 231 and L and S in the region including the sub portions 234 and 235 are reduced to an allowable limit in the process and set to substantially the same value. In this case, the transmittance of the liquid crystal display 310 of the third embodiment is 8% higher than that of the liquid crystal display 510 of the first comparative embodiment shown in FIG.
- the size of the angle formed by the sub-portion 234 and the initial alignment direction of the liquid crystal molecules and the angle formed by the sub-portion 234 and the initial alignment direction of the liquid crystal molecules are not particularly limited.
- An angle may be obtained, and the angle may be set so that suppression of disclination and resistance to pressing can be obtained.
- these angles are preferably set to 20 to 40 °.
- the size of the angle formed by the main portion 231 and the initial alignment direction of the liquid crystal molecules is not particularly limited, and an appropriate viewing angle can be obtained as a multi-domain liquid crystal display. What is necessary is just to set to the angle obtained. Specifically, this angle is preferably set to 3 to 10 °.
- the size of the angle formed by the first imaginary straight line and the second imaginary straight line is not particularly limited, but may be set so that the sum of L and S is the minimum value that can be produced in the entire slit. More specifically, it is preferably set to 5 to 15 °.
- the slit extends in the long side direction of the pixel.
- the slit may extend in the short side direction of the pixel.
- the pixel electrode is formed on the common electrode and the slit is formed on the pixel electrode.
- the common electrode is formed on the pixel electrode and the slit is formed on the common electrode. It may be a form. Such a form will be described below using a modification of the third embodiment.
- FIG. 8 is a schematic plan view of an active matrix substrate of an FFS mode liquid crystal display according to a modification of the third embodiment.
- FIG. 9 is a schematic plan view showing a common electrode provided on an active matrix substrate according to a modification of the third embodiment.
- the common electrode 315 is formed so as to cover most of the display area.
- the common electrode 315 is formed on the pixel electrode 317, and a plurality of slits 330 parallel to each other are formed in the common electrode 315.
- the common electrode 315 includes one or more linear portions.
- no slit is formed in the pixel electrode 317, and the pixel electrode 317 is formed in a plate shape without a break and faces the slit 330.
- the slit 330 includes a main part 331 and sub parts 334 and 335, and has the same shape as the slit 230 formed in the pixel electrode 217 of the liquid crystal display of the third embodiment. Therefore, also in the modification of the third embodiment, the same effect as in the third embodiment can be obtained. That is, the difference between the width L and width S of the region including the main portion 331 and the width L and width S of the region including the sub portions 334 and 335 can be reduced. As a result, the slit pattern can be prevented from changing due to process variations, and the transmittance can be improved.
- L and S in the region including the main portion 331 and the region including the sub portions 334 and 335 may be substantially the same.
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Abstract
Description
スリット530は、互いに平行に設けられ、互いに同じ平面形状であるため、V字部533及び副部534、535の幅Sは、主部531、532の幅Sよりも小さくなる。また、画素電極517の線状部分518の幅Lは、主部531、532を形成する部分よりもV字部533、副部534、535を形成する部分において細くなってしまう。そのため、パネル透過率を向上する観点から、主部531、532を含む領域においてL及びSをプロセス上、許容される限界まで小さくすると、V字部533を含む領域と、副部534、535を含む領域とにおいてL及びSが許容さる限界を超えてしまう。この場合、プロセスのばらつきに起因する種々の不具合が発生する可能性がある。具体的には、例えば、パネル毎に輝度がばらついたり、同じパネルであったとしても表示ムラが発生したりすることがある。このような不具合が発生する原因としては、マスクのアライメントのずれ、パターンの幅の変化等が考えられる。
実施形態1は、マルチドメイン(2ドメイン)のFFSモードの液晶ディスプレイである。
図1は、実施形態1に係るFFSモードの液晶ディスプレイのアクティブマトリクス基板の平面模式図である。実施形態1に係る液晶ディスプレイ110は、アクティブマトリクス基板(アレイ基板)10と、基板10に対向する対向基板70と、両基板の間に設けられた水平配向型の液晶層80とを備える。アレイ基板10は、図1及び図3に示すように、絶縁基板11と、データバスライン13と、ゲートバスライン51と、ゲート絶縁膜12と、TFT53と、第一絶縁膜14と、第二絶縁膜16aと、共通電極15と、共通電極15上に形成された第三絶縁膜16bと、第三絶縁膜16b上に形成された画素電極17とを含む。アレイ基板10の液晶層80側の表面上には、水平配向膜(図示せず)が設けられている。共通電極15は、図2に示すように、表示領域を実質的に覆うように形成される。画素電極17には互いに平行な複数のスリット(長手状の開口)30が形成されて、共通電極15は、スリット30に対向している。画素電極17及び共通電極15の間に印可される電圧を制御することによって、液晶分子の配向、より詳細には回転を制御する。液晶分子の初期配向方向、すなわち電圧無印可時の配向方向は、図1の上下方向(図1中の矢印方向)に設定されている。対向基板70は、絶縁基板21と、カラーフィルタ23と、ブラックマトリクス22とを含む。対向基板70の液晶層80側の表面上には、水平配向膜(図示せず)が設けられている。なお、カラーフィルタ23及びブラックマトリクス22は、対向基板70側ではなく、アクティブマトリクス基板10側に設けられていてもよい。
画素電極17は、互いに平行な3以上の線状部分18と、線状部分18を互いに接続する接続部分19、20とを含む。
実施形態2は、マルチドメイン(2ドメイン)のFFSモードの液晶ディスプレイである。
図5は、実施形態2に係るFFSモードの液晶ディスプレイのアクティブマトリクス基板の平面模式図である。実施形態1においては、図1に示すように、主部31及びV字部33の間と、主部32及びV字部33の間と、V字部33の合計3つの屈曲部が形成されていたが、実施形態2においては、主部131、132、及び、V字部133に加え、更に、線状部分(副部)134、135が形成されるとともに、主部131及び副部134の間と、主部132及び副部135の間とに屈曲部が形成され、合計5つの屈曲部が形成される。その他の構成は、実施形態1と同様であるため、ここでの説明は省略する。以下、実施形態2の液晶ディスプレイ210の画素電極117の構造について説明する。
実施形態3は、モノドメインのFFSモードの液晶ディスプレイである。
図7は、実施形態3に係るFFSモードの液晶ディスプレイのアクティブマトリクス基板の平面模式図である。実施形態1及び2においては、ぞれぞれ、図1及び図5に示すようV字部33、133が形成されていたが、実施形態3においては、V字部は形成されない。主部231、及び、線状部分(副部)234、235が形成されるとともに、主部231及び副部234の間と、主部231及び副部235の間とに屈曲部が形成され、合計2つの屈曲部が形成される。その他の構成は、実施形態1と同様であるため、ここでの説明は省略する。以下、実施形態3の液晶ディスプレイ310の画素電極217の構造について説明する。
実施形態1~3では、スリットは、画素の長辺方向に伸長していたが、画素の短辺方向に伸長する形態であってもよい。
11、21:絶縁基板
12:ゲート絶縁膜
13、513:データバスライン
14:第一絶縁膜
15、315、515:共通電極
16a:第二絶縁膜
16b:第三絶縁膜
17、117、217、317、517:画素電極
18、118、218、518:線状部分
19、20、119、120、219、220、519、520:接続部分
22:ブラックマトリクス
23:カラーフィルタ
30、130、230、330、530:スリット
31、32、131、132、231、331、531、532:主部
33、133、533:V字部
36、37、136、137:直線部分
51、551:ゲートバスライン
53、553:TFT(薄膜トランジスタ)
54:半導体層
55a:ゲート電極
55b:ソース電極
55c:ドレイン電極
70:対向基板
71:コンタクトホール
80:液晶層
110、210、310、410、510:液晶ディスプレイ
134、135、234、235、334、335、534、535:副部
Claims (7)
- 第一の基板と、前記第一の基板に対向する第二の基板と、前記第一の基板及び前記第二の基板の間に設けられ、液晶分子を含む液晶層とを備え、
前記第一の基板は、第一の電極と、前記第一の電極上に設けられた絶縁膜と、前記絶縁膜上に設けられた第二の電極とを含み、
前記第二の電極には、画素内に設けられた複数のスリットが形成され、
前記第一の電極は、前記複数のスリットに対向し、
前記複数のスリットは、互いに平行であり、
前記複数のスリットは各々、第一の方向に延びる第一の直線部分と、前記第一の直線部分の一端に繋がり、第二の方向に延びる第二の直線部分と、前記第一の直線部分及び前記第二の直線部分が互いに繋がる領域において屈曲した屈曲部とを含み、
前記複数の第一直線部分の他端は、同じ直線上にあり、
前記複数のスリットの中で前記画素内において一方の端にあるスリットを第一のスリットとすると、
前記第一のスリットの隣のスリットは、第一の直線部分及び第二の直線部分が前記第一のスリットに近づくように、屈曲し、
前記第一のスリットからより遠いスリットほど、前記第一の直線部分の長さは、より短い液晶ディスプレイ。 - 電圧無印可時の前記液晶分子の配向方向を初期配向方向とすると、
前記第一の方向及び前記第二の方向は各々、前記初期配向方向と異なる請求項1記載の液晶ディスプレイ。 - 前記第一の方向と前記初期配向方向とのなす角は、前記第二の方向と前記初期配向方向とのなす角よりも大きく、
前記第一の直線部分は、前記第二の直線部分よりも短い請求項2記載の液晶ディスプレイ。 - 前記第一の方向と前記初期配向方向とのなす角は、20~40°であり、
前記第二の方向と前記初期配向方向とのなす角は、3~10°であり、
前記直線は、第一の直線であり、
前記複数のスリットの前記屈曲部は、同じ第二の直線上にあり、
前記第一の直線と前記第二の直線とのなす角は、5~15°である請求項2又は3記載の液晶ディスプレイ。 - 前記複数のスリットは各々、前記第一の直線部分の前記他端に繋がり、第三の方向に延びる第三の直線部分を更に含み、
前記第一の直線部分及び前記第三の直線部分は、V字状に設けられる請求項1~4のいずれかに記載の液晶ディスプレイ。 - 電圧無印可時の前記液晶分子の配向方向を初期配向方向とすると、
前記第三の方向と前記初期配向方向とのなす角は、20~40°であり、
前記複数のスリットは各々、前記第三の直線部分の前記第一の直線部分に繋がらない方の端に繋がり、第四の方向に延びる第四の直線部分と、前記第三の直線部分及び前記第四の直線部分が互いに繋がる領域において屈曲した第二の屈曲部とを更に含み、
前記直線は、第一の直線であり、
前記複数のスリットの前記第二の屈曲部は、同じ第三の直線上にあり、
前記第一の直線と前記第三の直線とのなす角は、5~15°であり、
前記第四の方向と前記初期配向方向とのなす角は、3~10°である請求項5記載の液晶ディスプレイ。 - 前記第二の電極は、前記複数のスリットに隣接する3以上の線状部分と、前記3以上の線状部分を互いに接続する接続部とを含み、
前記第一の直線部分は、前記接続部に隣接する請求項1~4のいずれかに記載の液晶ディスプレイ。
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CN201280038824.7A CN103733130B (zh) | 2011-08-10 | 2012-08-03 | 液晶显示器 |
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JP2014224840A (ja) * | 2013-05-15 | 2014-12-04 | 三菱電機株式会社 | 液晶表示パネル |
US10802345B2 (en) | 2016-02-29 | 2020-10-13 | Sharp Kabushiki Kaisha | Liquid crystal display device |
JP2021103304A (ja) * | 2015-08-28 | 2021-07-15 | 株式会社半導体エネルギー研究所 | 液晶表示装置 |
CN113467138A (zh) * | 2021-07-20 | 2021-10-01 | 北京京东方光电科技有限公司 | 阵列基板及其制备方法、显示组件及显示装置 |
JP2022503257A (ja) * | 2018-10-25 | 2022-01-12 | 京東方科技集團股▲ふん▼有限公司 | アレイ基板、表示パネルおよび表示装置 |
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JP7508661B2 (ja) | 2013-09-13 | 2024-07-01 | 株式会社半導体エネルギー研究所 | 表示装置 |
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JP7174790B2 (ja) | 2015-08-28 | 2022-11-17 | 株式会社半導体エネルギー研究所 | 液晶表示装置 |
US11706966B2 (en) | 2015-08-28 | 2023-07-18 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
JP7361868B2 (ja) | 2015-08-28 | 2023-10-16 | 株式会社半導体エネルギー研究所 | 液晶表示装置 |
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JP7390895B2 (ja) | 2018-10-25 | 2023-12-04 | 京東方科技集團股▲ふん▼有限公司 | アレイ基板、表示パネルおよび表示装置 |
CN113467138B (zh) * | 2021-07-20 | 2023-12-19 | 北京京东方光电科技有限公司 | 阵列基板及其制备方法、显示组件及显示装置 |
CN113467138A (zh) * | 2021-07-20 | 2021-10-01 | 北京京东方光电科技有限公司 | 阵列基板及其制备方法、显示组件及显示装置 |
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CN103733130A (zh) | 2014-04-16 |
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JP5756860B2 (ja) | 2015-07-29 |
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