WO2009128123A1 - 液晶表示パネル - Google Patents
液晶表示パネル Download PDFInfo
- Publication number
- WO2009128123A1 WO2009128123A1 PCT/JP2008/003825 JP2008003825W WO2009128123A1 WO 2009128123 A1 WO2009128123 A1 WO 2009128123A1 JP 2008003825 W JP2008003825 W JP 2008003825W WO 2009128123 A1 WO2009128123 A1 WO 2009128123A1
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- WIPO (PCT)
- Prior art keywords
- liquid crystal
- display panel
- crystal display
- photo spacer
- active matrix
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13396—Spacers having different sizes
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136213—Storage capacitors associated with the pixel electrode
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136277—Active matrix addressed cells formed on a semiconductor substrate, e.g. of silicon
-
- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/40—Arrangements for improving the aperture ratio
Definitions
- the present invention relates to a liquid crystal display panel, and more particularly to a liquid crystal display panel in which a cell thickness is maintained by a photo spacer formed in a column shape on a substrate.
- the liquid crystal display panel includes a pair of substrates arranged to face each other and a liquid crystal layer provided between the two substrates.
- the thickness of the liquid crystal layer that is, the cell thickness is kept constant by the spacer provided between the pair of substrates.
- the spacer a bead-shaped spacer dispersed and arranged on one of the pair of substrates has been conventionally used.
- the bead-shaped spacer is used.
- columnar photo spacers that are formed and arranged by photolithography on one of the pair of substrates are used.
- Patent Document 1 discloses a reflection / transmission type liquid crystal display device having a spacer function in a pixel and a protrusion for regulating alignment of liquid crystal molecules and a method thereof.
- an active matrix liquid crystal display panel includes an active matrix substrate and a counter substrate as the pair of substrates.
- FIG. 11 is a plan view of a conventional active matrix substrate 120.
- the active matrix substrate 120 includes a plurality of pixel electrodes 117 provided in a matrix and a plurality of gate lines 113a provided so as to extend in parallel with each other along the short side of each pixel electrode 117.
- a plurality of source lines 115 provided so as to extend in parallel with each other along the long side of each pixel electrode 117, and a plurality of capacitor lines 113b provided so as to extend in parallel with each other along each gate line 113a.
- a plurality of thin film transistors (hereinafter referred to as TFTs) 105 provided respectively at the intersections of the gate lines 113a and the source lines 115 and connected to the pixel electrodes 117, respectively.
- the TFT 105 and the pixel electrode 117 are connected via a through hole 116a formed in a resin film (not shown) on the TFT 105 as shown in FIG. .
- the photo spacers 123a (and 123b) formed on the counter substrate are indicated by two-dot chain lines. Since the photo spacer 123b is formed lower than the photo spacer 123a, it is in contact with the surface of the active matrix substrate when the panel surface is pressed to maintain the cell thickness, and is manufactured by a liquid crystal dropping injection method.
- the liquid crystal display panel is configured such that bubbles are not easily generated when a low temperature impact is applied to the panel surface.
- the head of the photo spacer 123a of the counter substrate may fall.
- the cell thickness becomes narrow and the cell thickness cannot be kept constant, making it difficult to control the cell thickness stably by the photo spacer 123a. End up.
- the through holes 116a formed in the active matrix substrate 120 and the photo spacers 123a formed in the counter substrate are arranged apart from each other in plan view, thereby allowing the through matrix of the active matrix substrate 120 to pass through. It can be considered that the head of the photo spacer 123a of the counter substrate does not fall into the hole 116a.
- the spacing between the source lines 115 is becoming narrower as the pixels become higher in definition, so that the photo spacers 123a or the through holes 116a are formed so as to protrude into the transmission region in plan view.
- the through hole 116a and the photo spacer 123a are separated from each other in plan view.
- a transmissive region is a region that does not overlap with the capacitor line 113 b and the TFT 105 among regions surrounded by a pair of adjacent gate lines 113 a and a pair of adjacent source lines 115. It is an area that transmits light from the light and is effective for image display.
- the photo spacer 123a or the through hole 116a is projected into the transmission region in plan view, the portion protruding into the transmission region is not effective for image display, and the aperture ratio of the pixel is lowered.
- the orientation of the liquid crystal layer is likely to be disturbed in the vicinity of the photo spacer 123a, so that the aperture ratio of the pixel is lowered by shielding that region. .
- the through hole 116a is formed so as to protrude into the transmissive region, the orientation of the liquid crystal layer is easily disturbed in the vicinity of the through hole 116a, and the aperture ratio of the pixel is reduced as described above.
- light leakage occurs and there is a concern about a decrease in contrast.
- the present invention has been made in view of such a point, and an object of the present invention is to maintain the stability of cell thickness control by a photospacer and suppress a decrease in the aperture ratio of a pixel.
- the present invention provides a first pixel column in which a photo spacer is disposed so as to overlap one end of a through hole, and a second pixel array in which a photo spacer is disposed so as to overlap the other end of the through hole. And a pixel column.
- a liquid crystal display panel includes an active matrix substrate, a counter substrate disposed to face the active matrix substrate, and a liquid crystal layer provided between the active matrix substrate and the counter substrate.
- the active matrix substrate includes a plurality of switching elements provided on the first transparent substrate, an insulating film provided so as to cover the switching elements, and a matrix formed on the insulating film.
- a plurality of pixel electrodes respectively connected to each switching element through through holes formed for each of the switching elements, and the counter substrate is provided to stand on the second transparent substrate.
- a photo spacer is provided for maintaining the thickness of the liquid crystal layer, and a plurality of pixels are defined in a matrix corresponding to the pixel electrodes.
- a first pixel column in which a plurality of pixels arranged so that the photo spacer overlaps one end of the through hole, and the photo spacer at the other end of the through hole.
- a second pixel row in which a plurality of pixels arranged so as to overlap with each other.
- the first pixel column in which a plurality of pixels arranged so that the photo spacer overlaps with one end of the through hole and the photo spacer overlap with the other end of the through hole are arranged.
- a second pixel column in which a plurality of pixels are arranged, the head of the photo spacer of the counter substrate in the first pixel column is temporarily assumed due to a shift in bonding the active matrix substrate and the counter substrate. Even if the portion falls into the through hole of the active matrix substrate, the head of the photo spacer of the counter substrate does not fall into the through hole of the active matrix substrate in the second pixel column.
- the head of the photo spacer of the counter substrate in each pixel of the second pixel column contacts the pixel electrode outside the through hole of the active matrix substrate, so that the photo The stability of the cell thickness control by the spacer is maintained.
- the photo spacer is disposed so as to overlap one end or the other end of the through hole, the interval between the photo spacer and the through hole in a plan view is narrowed. Thereby, since it is suppressed that a photo spacer or a through hole protrudes to a transmissive area
- the first pixel column and the second pixel column may be adjacent to each other.
- the cell thickness is reliably held in one of the adjacent pixel columns.
- the insulating film may be a resin film.
- the insulating film is generally a resin film that is thicker than the inorganic insulating film, the through-hole formed in the insulating film is deep and the inner wall is inclined so as to spread upward.
- the first pixel column and the second pixel column are provided as described above, stable cell thickness control is possible.
- the photo spacer may include a first photo spacer and a second photo spacer formed lower than the first photo spacer.
- the head of the first photo spacer abuts against the surface of the active matrix substrate and the cell thickness is normally maintained.
- the head of the second photo spacer contacts the surface of the active matrix substrate to maintain the cell thickness.
- the difference in elastic characteristics between each photospacer and the second transparent substrate is smaller than when the photospacer is the first photospacer, and even if a low temperature impact is applied to the panel surface, the second transparent substrate As each photo spacer also bends following the bending of the liquid crystal, it becomes difficult to form a minute space between them, and the generation of bubbles is suppressed. .
- the photo spacer may be configured to be the alignment center of the liquid crystal layer.
- the photo spacer since the photo spacer serves as the alignment center of the liquid crystal layer, the photo spacer maintains the cell thickness and regulates the alignment of the liquid crystal layer in the VA (Vertical Alignment) type liquid crystal display panel. Become.
- the active matrix substrate includes a plurality of gate lines provided to extend in parallel to each other, a plurality of source lines provided to extend in parallel to each other in a direction intersecting each gate line, and the gate lines to each other.
- a plurality of capacitor lines provided so as to extend in parallel with each other, and the photo spacer and the through hole may be arranged so as to overlap the capacitor lines along the source lines.
- the photo spacer and the through hole are arranged so as to overlap each capacitor line along each source line, in the high-definition liquid crystal display panel in which the interval between the source lines is set narrow, A decrease in the aperture ratio of the pixel is specifically suppressed.
- the active matrix substrate includes a plurality of gate lines provided to extend in parallel to each other, a plurality of source lines provided to extend in parallel to each other in a direction intersecting each gate line, and the gate lines to each other.
- a plurality of capacitor lines provided so as to extend in parallel with each other, and the photo spacers and the through holes may be disposed so as to overlap the capacitor lines along the gate lines.
- the photo spacer and the through hole are arranged so as to overlap each capacitor line along each gate line, in the high-definition liquid crystal display panel in which the interval between the source lines is set narrow.
- the reduction in the aperture ratio of the pixel is specifically suppressed, and for example, the distance between each drain connection electrode connected to the drain region of the semiconductor layer of each TFT provided as a switching element and each source line is designed wide. Therefore, leakage failure between the same layers between each drain connection electrode and each source line is suppressed.
- a liquid crystal display panel specifically includes an active matrix substrate, a counter substrate disposed to face the active matrix substrate, and a liquid crystal layer provided between the active matrix substrate and the counter substrate.
- the active matrix substrate is provided with a plurality of switching elements provided on the first transparent substrate, an insulating film provided to cover each switching element, and provided in a matrix on the insulating film, A plurality of pixel electrodes respectively connected to each switching element through through holes formed for each of the switching elements in an insulating film, and the counter substrate stands on a second transparent substrate, respectively.
- a first photo spacer provided to maintain the thickness of the liquid crystal layer and a second photo spacer lower than the first photo spacer. The first photo spacer is provided so as not to overlap the through hole, and the second photo spacer is provided so as to overlap the through hole.
- the cell thickness is reliably maintained.
- the second photo spacer that is formed lower than the first photo spacer and contacts the surface of the active matrix substrate when the panel surface is pressed is provided so as to overlap the through hole, so as to overlap the through hole, the aperture ratio of the pixel is reduced. Reduction is suppressed. Accordingly, it is possible to maintain the stability of the cell thickness control by the photo spacer and suppress the decrease in the aperture ratio of the pixel.
- the first pixel column arranged so that the photo spacer overlaps one end of the through hole, and the second pixel column arranged so that the photo spacer overlaps the other end of the through hole are provided. Therefore, the stability of the cell thickness control by the photo spacer can be maintained and the decrease in the aperture ratio of the pixel can be suppressed.
- FIG. 1 is a plan view of an active matrix substrate 20a constituting the liquid crystal display panel according to the first embodiment.
- FIG. 2 is a cross-sectional view of the active matrix substrate 20a and the liquid crystal display panel 50a including the active matrix substrate 20a along the line II-II in FIG.
- FIG. 3 is a cross-sectional view of the active matrix substrate 20a taken along line III-III in FIG.
- FIG. 4 is a plan view schematically showing the liquid crystal display panel 50a.
- FIG. 5 is a plan view schematically showing the liquid crystal display panel 50b according to the second embodiment.
- FIG. 6 is a plan view schematically showing a liquid crystal display panel 50c according to the third embodiment.
- FIG. 7 is a plan view schematically showing a liquid crystal display panel 50d according to the fourth embodiment.
- FIG. 8 is a plan view of an active matrix substrate 20e constituting the liquid crystal display panel according to the fifth embodiment.
- FIG. 9 is a cross-sectional view of the active matrix substrate 20e and the liquid crystal display panel 50e including the active matrix substrate 20e along the line IX-IX in FIG.
- FIG. 10 is a plan view schematically showing a liquid crystal display panel 50f according to the sixth embodiment.
- FIG. 11 is a plan view of a conventional active matrix substrate 120.
- Embodiment 1 of the Invention 1 to 4 show Embodiment 1 of a liquid crystal display panel according to the present invention.
- FIG. 1 is a plan view of an active matrix substrate 20a constituting the liquid crystal display panel of the first embodiment.
- 2 is a cross-sectional view of the active matrix substrate 20a and the liquid crystal display panel 50a including the active matrix substrate 20a along the line II-II in FIG. 1, and
- FIG. 3 is along the line III-III in FIG. It is sectional drawing of the active matrix substrate 20a.
- each pixel electrode 17 disposed in the uppermost layer in the active matrix substrate 20a is indicated by a bold line.
- the liquid crystal display panel 50a includes an active matrix substrate 20a and a counter substrate 30a arranged to face each other, a liquid crystal layer 40 provided between the substrates 20a and 30a, the substrates 20a and A sealing material (not shown) for sealing the liquid crystal layer 40 between the substrates 20a and 30a is provided.
- the active matrix substrate 20a includes a first transparent substrate 10a such as a glass substrate, a semiconductor layer 11 provided in a substantially L shape on the first transparent substrate 10a, and a semiconductor
- a gate insulating film 12 provided so as to cover the layer 11, a plurality of gate lines 13a provided on the gate insulating film 12 so as to extend in parallel to each other, and the gate lines 13a on the gate insulating film 12 along the gate lines 13a
- a plurality of capacitor lines 13b provided so as to extend in parallel with each other, an interlayer insulating film 14 provided so as to cover each gate line 13a and each capacitor line 13b, and orthogonal to each gate line 13a on the interlayer insulating film 14
- a plurality of source lines 15 a provided so as to extend in parallel to each other in a direction to be formed, a plurality of drain connection electrodes 15 b provided in an island shape between the source lines 15 a on the interlayer insulating film 14,
- the resin film 16 provided so as to cover the drain line 15a and
- a plurality of pixels P constituting a minimum unit of an image are defined in a matrix corresponding to each pixel electrode 17.
- a region that does not overlap with a portion that configures the capacitor line 13b and the TFT 5 described later for example, An area (transmission area) effective for image display is configured by transmitting light from the backlight.
- TFTs 5 are provided as switching elements at the intersections of the gate lines 13a and the source lines 15a.
- the TFT 5 includes a gate electrode G configured by a part of the gate line 13 a and a protruding portion protruding to the side of the gate line 13 a, a channel region 11 a, a channel A semiconductor layer 11 in which a lightly doped region (so-called LDD region) 11b outside the region 11a and a heavily doped region 11c including a source region S and a drain region D outside the lightly doped region 11b are respectively defined; And a gate insulating film 12 provided between the gate electrode G and the semiconductor layer 11.
- LDD region lightly doped region
- the source region S is connected to the source line 15a through an active contact hole 14a formed in the laminated film of the gate insulating film 12 and the interlayer insulating film 14, as shown in FIGS.
- the drain region D is connected to the drain connection electrode 15b through an active contact hole 14b formed in the laminated film of the gate insulating film 12 and the interlayer insulating film 14.
- the drain connection electrode 15b is connected to the pixel electrode 17 through a through hole 16a formed in the resin film 16, as shown in FIGS.
- the drain region D is provided so as to overlap the capacitor line 13b, and constitutes an auxiliary capacitor together with the capacitor line 13b and the gate insulating film 12 provided therebetween. is doing.
- the counter substrate 30 a includes a second transparent substrate 10 b such as a glass substrate, a black matrix 21 a provided in a lattice shape on the second transparent substrate 10 b, and each lattice of the black matrix 21 a
- a color filter layer 21 b provided with colored layers such as a red layer, a green layer and a blue layer, a common electrode 22 provided so as to cover the color filter layer 21, and a stand up on the common electrode 22.
- the first and second photo spacers 23a and 23b (see FIG. 1) and an alignment film (not shown) provided so as to cover the common electrode 22 are provided.
- the first photo spacers 23a and the second photo spacers 23b arranged on the counter substrate 30a are indicated by two-dot chain lines.
- the first photo spacers 23a are formed, for example, at a height of about 4.5 ⁇ m, and come into contact with the surface of the active matrix substrate 20a (the surface of the pixel electrode 17) as shown in FIG. That is, it is configured to maintain the cell thickness.
- the second photospacer 23b is formed, for example, at a height of about 4.2 ⁇ m and lower than the first photospacer 23a, and the surface of the active matrix substrate 20a (the surface of the pixel electrode 17) when the panel surface is pressed. And the thickness of the liquid crystal layer 40 is maintained.
- the second photo spacers 23b are formed lower than the first photo spacers 23a, when the liquid crystal display panel 50a is manufactured by the liquid crystal dropping injection method, all the photo spacers are the first photo spacers 23a.
- each of the photo spacers follows the bending of the second transparent substrate 10b. Since the photo spacer is also bent, it is difficult to form a minute space or the like between them, and the generation of bubbles is suppressed.
- FIG. 4 is a plan view schematically showing the liquid crystal display panel 50a.
- the through holes 16a formed in the active matrix substrate 20a and the first photo spacers 23a and the second photo spacers 23b formed in the counter substrate 30a are shown.
- the liquid crystal display panel 50 a includes a first pixel column La arranged such that each first photo spacer 23 a overlaps one end (lower side in the drawing) of the through hole 16 a, and the first pixel column A second pixel column Lb is arranged adjacent to La and arranged such that each first photospacer 23a overlaps the other end (upper side in the drawing) of the through hole 16a.
- the second photo spacers 23b are arranged so as to overlap the through holes 16a in the first pixel column La and the second pixel column Lb.
- the size of the pixel P is about 30 ⁇ m ⁇ 90 ⁇ m
- the number density of the first photo spacers 23a is about 11 / mm 2
- the number density of the second photo spacers 23b is 360 / mm 2.
- a mm 2 about.
- the size of the pixel P is about 40 ⁇ m ⁇ 120 ⁇ m
- the number density of the first photo spacers 23a is about 11 / mm 2
- the number density of the second photo spacers 23b is about 197 / mm 2. It is.
- the number density of the first photo spacers 23a is about 11 / mm 2 and the number density of the second photo spacers 23b is about 122 / mm 2. It is. Note that the first photo spacers 23a are preferably arranged only in the respective pixels P that display blue in order to suppress deterioration in display quality.
- the liquid crystal display panel 50a having the above configuration configures the liquid crystal layer 40 by applying a predetermined voltage to the liquid crystal layer 40 disposed between each pixel electrode 17 on the active matrix 20a and the common electrode 22 on the counter substrate 30a. By changing the alignment state of the liquid crystal molecules, the transmittance of the light transmitted through the panel is adjusted for each pixel P, and an image is displayed.
- the manufacturing method of the present embodiment includes an active matrix substrate manufacturing process, a counter substrate manufacturing process, and a liquid crystal dropping and bonding process.
- an amorphous silicon film (thickness of about 50 nm) is formed on the entire first transparent substrate 10a such as a glass substrate by plasma CVD (Chemical Vapor Deposition) using, for example, disilane as a source gas. After that, heat treatment such as laser light irradiation is performed to transform the film into a polysilicon film. Thereafter, the polysilicon film is patterned by photolithography to form the semiconductor layer 11.
- a base coat film may be formed by forming a silicon oxide film or the like between the first transparent substrate 10a and the semiconductor layer 11 by a plasma CVD method.
- a silicon oxide film (having a thickness of about 100 nm) is formed on the entire substrate on which the semiconductor layer 11 is formed by a plasma CVD method to form the gate insulating film 12, and then the gate insulating film 12 is interposed. Then, the semiconductor layer 11 is doped with phosphorus or boron as an impurity.
- a tantalum nitride film (thickness of about 50 nm) and a tungsten film (thickness of about 350 nm) are sequentially formed on the entire substrate on the gate insulating film 12 by sputtering, and then patterned by photolithography. Then, the gate line 13a and the capacitor line 13b are formed.
- the semiconductor layer 11 is doped with phosphorus or boron through the gate insulating film 13, and a channel region 11a is formed in a portion overlapping the gate electrode G.
- the semiconductor layer 11 is doped with phosphorus or boron through the photoresist and the gate insulating film 12. Note that a region overlapping the capacitor line 13b of the semiconductor layer 11 is separately doped with phosphorus or boron before the capacitor line 13b is formed. Thereafter, heat treatment is performed, and activation of doped phosphorus or boron is performed, thereby forming the lightly doped region 11b and the heavily doped region 11c including the source region S and the drain region D.
- a silicon nitride film (thickness of about 250 nm) and a silicon oxide film (thickness) are formed on the entire substrate in which the channel region 11a, the lightly doped region 11b, and the heavily doped region 11c are formed in the semiconductor layer 11 by plasma CVD.
- a silicon nitride film (thickness of about 250 nm) and a silicon oxide film (thickness) are formed on the entire substrate in which the channel region 11a, the lightly doped region 11b, and the heavily doped region 11c are formed in the semiconductor layer 11 by plasma CVD.
- the interlayer insulating film 14 is formed, and then the portions of the stacked film of the gate insulating film 12 and the interlayer insulating film 14 that overlap the source region S and the drain region D are removed by etching.
- Contact holes 14a and 14b are formed.
- a titanium film (thickness of about 100 nm), an aluminum film (thickness of about 350 nm), and a titanium film (thickness) are formed on the entire substrate on which the interlayer insulating film 14 having the active contact holes 14a and 14b is formed by sputtering.
- the source line 15a and the drain connection electrode 15b are formed by patterning by photolithography.
- acrylic resin is applied to the entire substrate on which the source line 15a and the drain connection electrode 15b are formed by spin coating to form the resin film 16 (thickness of about 2 ⁇ m), and then the drain of the resin film 16 is formed. A portion overlapping the connection electrode 15b is removed by etching to form a through hole 16a.
- an ITO (Indium Tin Oxide) film (thickness of about 100 nm) is formed on the entire substrate on which the resin film 16 having the through holes 16a is formed by sputtering, and then patterned by photolithography, A pixel electrode 17 is formed.
- an alignment film is formed by performing a rubbing process.
- the active matrix substrate 20a can be manufactured.
- a black-colored photosensitive resist material having a film thickness of about 2 ⁇ m is formed on the entire second transparent substrate 10b such as a glass substrate, and then a pattern is formed by photolithography to form a black matrix 21a. Form.
- a photosensitive resist material colored in, for example, red, green, or blue is formed on each of the lattices of the black matrix 21a with a film thickness of about 2 ⁇ m, and then patterned by photolithography to select the selected color.
- a colored layer for example, a red layer
- other colored layers for example, a green layer and a blue layer
- the color filter layer 21b is formed.
- an ITO film (thickness of about 100 nm) is formed by sputtering on the substrate on which the color filter layer 21b is formed, and the common electrode 22 is formed. Note that before the ITO film is formed on the substrate on which the color filter layer 21b is formed, an overcoat layer may be formed so as to cover the color filter layer 21b to improve flatness.
- a photosensitive acrylic resin is applied to the entire substrate on which the common electrode 22 is formed, for example, by spin coating to a thickness of about 4.5 ⁇ m, and then patterned by photolithography to form the first photo spacers 23a (A second photo spacer 23b (about 4.2 ⁇ m) is formed.
- the first photo spacer 23a and the second photo spacer 23b have a wavelength of 365 nm (i-line, for example) via a halftone mask or a gray tone mask provided with regions having different light transmittances relative to the photosensitive acrylic resin.
- an alignment film is formed by performing a rubbing process.
- the counter substrate 30a can be manufactured.
- a seal material made of ultraviolet curing and thermosetting resin is drawn in a frame shape on the counter substrate 30a manufactured in the counter substrate manufacturing step.
- a liquid crystal material is dropped onto a region inside the sealing material in the counter substrate 30a on which the sealing material is drawn.
- the bonded body is released to atmospheric pressure. By doing, the surface of a bonding body is pressurized.
- the sealing material is hardened by heating the bonding body.
- the liquid crystal display panel 50a can be manufactured as described above.
- the first pixel column formed by arranging the plurality of pixels P arranged so that the first photo spacer 23a overlaps one end of the through hole 16a. Since it includes La and a second pixel column Lb in which a plurality of pixels P are arranged so that the first photo spacer 23b overlaps the other end of the through hole 16a, the active matrix substrate 20a and the counter substrate are provided.
- the head of the first photospacer 23a of the counter substrate 30a falls into the through hole 16a of the active matrix substrate 20a in the first pixel column La due to a shift when the 30a is bonded, the second In the pixel column Lb, the head of the first photo spacer 23a of the counter substrate 30a is connected to the through hole of the active matrix substrate 20a. It will not depress the inside of the hole 16a. In this case, the head of the first photospacer 23a of the counter substrate 30a in each pixel P of the second pixel row Lb contacts the pixel electrode 17 outside the through hole 16a of the active matrix substrate 20a, so that the cell thickness Therefore, the stability of the cell thickness control by the first photo spacer 23a is maintained.
- the first photo spacer 23a is arranged so as to overlap one end or the other end of the through hole 16a, there is no need for a margin for misalignment or the like, and the first photo spacer 23a and the through hole 16a in a plan view are eliminated. Can be narrowed. Thereby, since it can suppress that the 1st photo-spacer 23a or the through hole 16a protrudes in a transmissive area
- the head of the first photo spacer 23a is normally at the active matrix substrate 20a.
- the cell thickness can be maintained by contacting the surface of the substrate, and when the panel surface is pressed, the head of the second photo spacer 23b can contact the surface of the active matrix substrate 20a to maintain the cell thickness.
- the liquid crystal display panel manufactured by the liquid crystal dropping injection method there is a difference in elastic characteristics between each photo spacer and the second transparent substrate 10b as compared with the case where all the photo spacers are the first photo spacers 23a. Even if a low temperature impact is applied to the panel surface, each photo follows the bending of the second transparent substrate 10b. By also flex pacer, such as the minute space is hardly formed between the two, it is possible to suppress the generation of bubbles.
- the first photo spacers 23a, the second photo spacers 23b, and the through holes 16a are arranged so as to overlap the capacitor lines 13b along the source lines 15a.
- the intervals between the source lines 15a are set narrow, it is possible to suppress a decrease in pixel aperture ratio.
- liquid crystal display panel 50a of the present embodiment it is possible to prevent the portion where the orientation of the liquid crystal layer 40 is easily disturbed in the vicinity of each first photo spacer 23a and each through hole 16a from protruding into the transmission region.
- the occurrence of light leakage and the decrease in contrast can be suppressed.
- FIG. 5 is a plan view schematically showing the liquid crystal display panel 50b of the present embodiment.
- the same portions as those in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.
- each second photospacer 23b is arranged so as to overlap a part of each through hole 16a.
- liquid crystal display panel 50b of the present embodiment similarly to the first embodiment, it is possible to maintain the stability of the cell thickness control by the photo spacer and suppress the decrease in the aperture ratio of the pixel.
- FIG. 6 is a plan view schematically showing the liquid crystal display panel 50c of the present embodiment.
- each through hole 16a is formed along the source line 15a with respect to each first photo spacer 23a.
- the liquid crystal display panel 50c according to the present embodiment is arranged in a shifted state (in the vertical direction in the drawing), as shown in FIG. 6, each through hole 16a is connected to each first photospacer 23a as a gate line. It is arranged in a state shifted along 13a (laterally in the figure).
- the liquid crystal display panel 50 c includes a first pixel row La arranged so that each first photo spacer 23 a overlaps one end (left side in the drawing) of the through hole 16 a, Adjacent to the pixel column La, each first photo spacer 23a is provided with a second pixel column Lb arranged so as to overlap the other end (right side in the figure) of the through hole 16a.
- liquid crystal display panel 50c of the present embodiment as in the first and second embodiments, it is possible to maintain the stability of the cell thickness control by the photo spacer and suppress the decrease in the aperture ratio of the pixel.
- the distance between the first photo spacers 23a and the through holes 16a in a plan view can be narrowed, so that the distance between each source line and each drain connection electrode is designed to be wide. And leakage failure between the same layers can be suppressed.
- FIG. 7 is a plan view schematically showing the liquid crystal display panel 50d of the present embodiment.
- each second photospacer 23b is disposed so as to overlap a part of each through hole 16a.
- liquid crystal display panel 50d of the present embodiment as in the first to third embodiments, it is possible to maintain the stability of cell thickness control by the photo spacer and suppress the decrease in the aperture ratio of the pixel.
- FIG. 8 is a plan view of an active matrix substrate 20e constituting the liquid crystal display panel of the present embodiment
- FIG. 9 is an active matrix substrate 20e along the line IX-IX in FIG. 8 and a liquid crystal display including the active matrix substrate 20e. It is sectional drawing of the panel 50e.
- a transmissive liquid crystal display panel is exemplified, but in this embodiment, a transflective liquid crystal display panel 50e will be described.
- the liquid crystal display panel 50e includes an active matrix substrate 20e and a counter substrate 30e arranged to face each other, a liquid crystal layer 40 provided between the substrates 20e and 30e, A sealing material (not shown) for adhering the substrates 20e and 30e to each other and enclosing the liquid crystal layer 40 between the substrates 20e and 30e is provided.
- the active matrix substrate 20e has a configuration in which a reflective electrode 18 is provided on each pixel electrode 17 of the active matrix 20a of the first embodiment.
- the reflection electrode 18 is provided between each gate line 13a and one capacitor line 13b adjacent to the gate line 13a on each pixel electrode 17, and constitutes a reflection region for displaying a reflection mode. is doing.
- the pixel electrode 17 exposed from the reflective electrode 18 constitutes a transmissive region in which a transmissive mode is displayed.
- the active matrix substrate 20e is formed by, for example, a molybdenum film by sputtering on the entire substrate on which the pixel electrode 17 is formed after the pixel electrode 17 is formed in the active matrix substrate manufacturing process described in the first embodiment. Then, an aluminum film can be sequentially formed and patterned by photolithography to form the reflective electrode 18.
- the counter substrate 30 e has a configuration in which a white layer 21 c is provided between the color filter layer 21 b and the common electrode 22 in the counter substrate 30 a of the first embodiment.
- the white layer 21c is provided so as to overlap the reflective region 18 of the active matrix substrate 20e, and is configured such that the cell thickness in the reflective region is 1 ⁇ 2 of the cell thickness in the transmissive region.
- the counter substrate 30e is formed of a colorless photosensitive resist material on the entire substrate on which the color filter layer 21b is formed after the color filter layer 21b is formed in the counter substrate manufacturing process described in the first embodiment. After the film is formed, it can be manufactured by patterning by photolithography to form the white layer 21c.
- the stability of cell thickness control by the photo spacer can be maintained, the distance between each source line and each drain connection electrode can be designed wide, and leakage between the same layers can be prevented. Etc. can be suppressed.
- the positional relationship between each photo spacer and the through hole is set by moving the position of the through hole 16a while the positions of the first photo spacers 23a and the second photo spacers 23b are fixed.
- the positional relationship between each photo spacer and the through hole may be set by moving the position of each photo spacer in a state where the position of the through hole is fixed. May be combined.
- the first photo spacers 23a are arranged so as to overlap inside the pair of through holes 16a adjacent to each other.
- the first photo spacers may be arranged so as to overlap the outside of a pair of through holes adjacent to each other.
- the first pixel column La and the second pixel column Lb are adjacent to each other.
- the first pixel column La and the second pixel column Lb may be separated from each other. That is, one or more pixel columns in which no special positional relationship is set between the photo spacers and the through holes are arranged between the first pixel column La and the second pixel column Lb, and these pixel columns are repeated. It may be.
- FIG. 10 is a plan view schematically showing the liquid crystal display panel 50f of the present embodiment.
- each first photospacer 23a is arranged so that each first photospacer 23a overlaps one end of each throughhole 16a, and each first photospacer 23a is provided in each throughhole 16a.
- the second pixel row Lb arranged to overlap the other end is defined, in the liquid crystal display panel 50f of the present embodiment, the first photo spacer 23a is provided so as not to overlap the through hole 16a, and the second A photo spacer 23b is provided so as to overlap the through hole 16a.
- the cell thickness can be reliably maintained. Can do.
- the second photo spacers 23b that are formed lower than the first photo spacers 23b and come into contact with the surface of the active matrix substrate when the panel surface is pressed are provided so as to overlap the through holes 16a, A decrease in the aperture ratio can be suppressed. Therefore, the stability of the cell thickness control by the photo spacer can be maintained, and the decrease in the aperture ratio of the pixel can be suppressed.
- each photo spacer of each of the above embodiments is aligned with the alignment center of the liquid crystal layer. It is good.
- the first photo spacer and the second photo spacer are exemplified as the photo spacers.
- the present invention may be only the photo spacers that are in contact with the surface of the active matrix substrate in a normal state.
- the configuration in which the photo spacer is arranged at the approximate center of each pixel (in the transflective type, the approximate center of the reflection region) is exemplified.
- the photo spacer is arranged anywhere within each pixel. It may be.
- the liquid crystal display panel including the TFT is exemplified as the switching element.
- the present invention can be applied to a liquid crystal display panel including other switching elements such as MIM (Metal Insulator Metal). it can.
- the present invention can maintain the stability of the cell thickness control by the photo spacer and suppress the decrease in the aperture ratio of the pixel. Therefore, the entire liquid crystal display panel in which the photo spacer is arranged in the pixel is used. Useful for.
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Abstract
Description
Lb 第2画素列
P 画素
5 TFT(スイッチング素子)
10a 第1の透明基板
10b 第2の透明基板
13a ゲート線
13b 容量線
15a ソース線
16 樹脂膜(絶縁膜)
16a スルーホール
17 画素電極
20a,20e アクティブマトリクス基板
23a 第1フォトスペーサ
23b 第2フォトスペーサ
30a,30e 対向基板
40 液晶層
50a~50f 液晶表示パネル
図1~図4は、本発明に係る液晶表示パネルの実施形態1を示している。具体的に図1は、本実施形態1の液晶表示パネルを構成するアクティブマトリクス基板20aの平面図である。そして、図2は、図1中のII-II線に沿ったアクティブマトリクス基板20a及びそれを備えた液晶表示パネル50aの断面図であり、図3は、図1中のIII-III線に沿ったアクティブマトリクス基板20aの断面図である。なお、図1では、後述するように、アクティブマトリクス基板20aにおいて最上層に配置される各画素電極17を太線で示している。
まず、ガラス基板などの第1の透明基板10aの基板全体に、例えば、原料ガスとしてジシランなどを用いて、プラズマCVD(Chemical Vapor Deposition)法により、アモルファスシリコン膜(厚さ50nm程度)を成膜した後、レーザ光の照射などによる加熱処理を行ってポリシリコン膜に変成する。その後、そのポリシリコン膜をフォトリソグラフィによりパターニングして、半導体層11を形成する。なお、第1の透明基板10a及び半導体層11の間に、プラズマCVD法により酸化シリコン膜などを成膜して、ベースコート膜を形成してもよい。
まず、ガラス基板などの第2の透明基板10bの基板全体に、例えば、黒に着色した感光性レジスト材料を膜厚2μm程度で成膜した後、フォトリソグラフィによりパターン形成して、ブラックマトリクス21aを形成する。
まず、例えば、ディスペンサを用いて、上記対向基板作製工程で作製された対向基板30aに、紫外線硬化及び熱硬化併用型樹脂などにより構成されたシール材を枠状に描画する。
図5は、本実施形態の液晶表示パネル50bを模式的に示した平面図である。なお、以下の各実施形態において、図1~図4と同じ部分については同じ符号を付して、その詳細な説明を省略する。
図6は、本実施形態の液晶表示パネル50cを模式的に示した平面図である。
図7は、本実施形態の液晶表示パネル50dを模式的に示した平面図である。
図8は、本実施形態の液晶表示パネルを構成するアクティブマトリクス基板20eの平面図であり、図9は、図8中のIX-IX線に沿ったアクティブマトリクス基板20e及びそれを備えた液晶表示パネル50eの断面図である。
図10は、本実施形態の液晶表示パネル50fを模式的に示した平面図である。
Claims (8)
- アクティブマトリクス基板と、
上記アクティブマトリクス基板に対向して配置された対向基板と、
上記アクティブマトリクス基板及び対向基板の間に設けられた液晶層とを備え、
上記アクティブマトリクス基板が、第1の透明基板に設けられた複数のスイッチング素子と、該各スイッチング素子を覆うように設けられた絶縁膜と、該絶縁膜上にマトリクス状に設けられ、該絶縁膜に上記各スイッチング素子毎に形成されたスルーホールを介して該各スイッチング素子にそれぞれ接続された複数の画素電極とを備え、
上記対向基板が、第2の透明基板に起立するように設けられ上記液晶層の厚さを保持するためのフォトスペーサを備え、
上記各画素電極に対応して複数の画素がマトリクス状に規定された液晶表示パネルであって、
上記フォトスペーサが上記スルーホールの一方端に重なるように配置された複数の画素を配列してなる第1画素列と、
上記フォトスペーサが上記スルーホールの他方端に重なるように配置された複数の画素を配列してなる第2画素列とを備えていることを特徴とする液晶表示パネル。 - 請求項1に記載された液晶表示パネルにおいて、
上記第1画素列及び第2画素列は、互いに隣り合っていることを特徴とする液晶表示パネル。 - 請求項1又は2に記載された液晶表示パネルにおいて、
上記絶縁膜は、樹脂膜であることを特徴とする液晶表示パネル。 - 請求項1乃至3の何れか1つに記載された液晶表示パネルにおいて、
上記フォトスペーサは、第1フォトスペーサと、該第1フォトスペーサよりも低く形成された第2フォトスペーサとを有していることを特徴とする液晶表示パネル。 - 請求項1乃至4の何れか1つに記載された液晶表示パネルにおいて、
上記フォトスペーサは、上記液晶層の配向中心となるように構成されていることを特徴とする液晶表示パネル。 - 請求項1乃至5の何れか1つに記載された液晶表示パネルにおいて、
上記アクティブマトリクス基板は、互いに平行に延びるように設けられた複数のゲート線と、該各ゲート線に交差する方向に互いに平行に延びるように設けられた複数のソース線と、上記各ゲート線に沿って互いに平行に延びるように設けられた複数の容量線とを有し、
上記フォトスペーサ及びスルーホールは、上記各ソース線に沿って各容量線に重なるように配置されていることを特徴とする液晶表示パネル。 - 請求項1乃至6の何れか1つに記載された液晶表示パネルにおいて、
上記アクティブマトリクス基板は、互いに平行に延びるように設けられた複数のゲート線と、該各ゲート線に交差する方向に互いに平行に延びるように設けられた複数のソース線と、上記各ゲート線に沿って互いに平行に延びるように設けられた複数の容量線とを有し、
上記フォトスペーサ及びスルーホールは、上記各ゲート線に沿って各容量線に重なるように配置されていることを特徴とする液晶表示パネル。 - アクティブマトリクス基板と、
上記アクティブマトリクス基板に対向して配置された対向基板と、
上記アクティブマトリクス基板及び対向基板の間に設けられた液晶層とを備え、
上記アクティブマトリクス基板が、第1の透明基板に設けられた複数のスイッチング素子と、該各スイッチング素子を覆うように設けられた絶縁膜と、該絶縁膜にマトリクス状に設けられ、該絶縁膜に上記各スイッチング素子毎に形成されたスルーホールを介して該各スイッチング素子にそれぞれ接続された複数の画素電極とを備え、
上記対向基板が、第2の透明基板に起立するようにそれぞれ設けられ上記液晶層の厚さを保持するための第1フォトスペーサ及び該第1フォトスペーサよりも低い第2フォトスペーサを備えた液晶表示パネルであって、
上記第1フォトスペーサは、上記スルーホールに重ならないように設けられ、
上記第2フォトスペーサは、上記スルーホールに重なるように設けられていることを特徴とする液晶表示パネル。
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| Application Number | Priority Date | Filing Date | Title |
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| JP2010508040A JP5108091B2 (ja) | 2008-04-14 | 2008-12-17 | 液晶表示パネル |
| EP08873915A EP2267522A4 (en) | 2008-04-14 | 2008-12-17 | LIQUID CRYSTAL DISPLAY PANEL |
| CN200880125911XA CN101952771A (zh) | 2008-04-14 | 2008-12-17 | 液晶显示面板 |
| US12/866,101 US20110141425A1 (en) | 2008-04-14 | 2008-12-17 | Liquid crystal display panel |
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| JP2008-104575 | 2008-04-14 | ||
| JP2008104575 | 2008-04-14 |
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| EP (1) | EP2267522A4 (ja) |
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| US20130177700A1 (en) * | 2012-01-05 | 2013-07-11 | Samsung Display Co., Ltd. | Method for dropping liquid crystal and method for manufacturing liquid crystal display using the same |
| JP2014240853A (ja) * | 2013-06-11 | 2014-12-25 | 三菱電機株式会社 | 液晶表示装置 |
| KR101602635B1 (ko) * | 2009-11-30 | 2016-03-22 | 삼성디스플레이 주식회사 | 표시 장치, 박막 트랜지스터 기판 및 이의 제조 방법 |
| JP2017097152A (ja) * | 2015-11-24 | 2017-06-01 | 株式会社ジャパンディスプレイ | 液晶表示装置 |
| DE102018208518A1 (de) | 2017-06-07 | 2018-12-13 | Mitsubishi Electric Corporation | Flüssigkristallanzeigefeld |
| WO2025192313A1 (ja) * | 2024-03-13 | 2025-09-18 | スタンレー電気株式会社 | 薄膜トランジスタ、電子デバイス |
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| CN109001946A (zh) * | 2017-06-07 | 2018-12-14 | 三菱电机株式会社 | 液晶显示面板 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2009128123A1 (ja) | 2011-08-04 |
| US20110141425A1 (en) | 2011-06-16 |
| RU2467367C2 (ru) | 2012-11-20 |
| EP2267522A4 (en) | 2012-03-07 |
| EP2267522A1 (en) | 2010-12-29 |
| CN101952771A (zh) | 2011-01-19 |
| JP5108091B2 (ja) | 2012-12-26 |
| RU2010130674A (ru) | 2012-05-20 |
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