WO2016143674A1 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
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- WO2016143674A1 WO2016143674A1 PCT/JP2016/056660 JP2016056660W WO2016143674A1 WO 2016143674 A1 WO2016143674 A1 WO 2016143674A1 JP 2016056660 W JP2016056660 W JP 2016056660W WO 2016143674 A1 WO2016143674 A1 WO 2016143674A1
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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
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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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
- G02F1/134336—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
- G02F1/1343—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
- G02F1/136—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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
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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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
Definitions
- the present invention relates to a liquid crystal display device.
- a spacer that separates a pair of substrates by a predetermined interval (gap) is provided on the surface of the substrate on the liquid crystal layer side.
- the spacer is directly formed on the substrate using, for example, a photosensitive resin.
- An alignment film is formed on the substrate having spacers formed on the opposing surfaces of the substrate, and a rubbing process is performed.
- a configuration of a liquid crystal display device provided with such a spacer is described in Patent Document 1.
- Patent Document 1 Since the spacer described in Patent Document 1 is formed before the rubbing treatment, a rubbing failure may occur downstream of the spacer in the rubbing direction during the rubbing treatment. For this reason, the density of the spacers is reduced to suppress the occurrence of alignment defects due to such rubbing defects.
- Patent Document 1 in the direction in which sub-pixels of different colors are arranged, one or less spacers are arranged in one pixel, and one spacer is arranged in at least three pixels or four pixels. However, the spacer is not continuously arranged at the maximum of 3 pixels or 4 pixels or more.
- the spacer may be extended across sub-pixels of different colors.
- the dimension (width) in the extending direction of the spacer becomes long, it becomes difficult for foreign matters such as dust to be caught by the spacer and removed during the cleaning process of the substrate surface after the spacer is formed. turn into. If there is a foreign substance on the substrate, there is a problem that the alignment of the liquid crystal is disturbed and minute bright spots are generated.
- One aspect of the present invention has been made in view of the above-described problems of the prior art, and is a liquid crystal display device in which foreign matter hardly remains at the time of cleaning and a sufficient holding strength of the liquid crystal cell thickness can be secured.
- the purpose is to provide.
- the liquid crystal display device includes an element substrate, a counter substrate facing the element substrate, a liquid crystal layer sandwiched between the element substrate and the counter substrate, the element substrate, and the counter substrate. And a first portion that is provided on the surface of the counter substrate on the element substrate side and extends in the row direction to separate the plurality of sub-pixels arranged in the column direction.
- the spacers arranged in odd rows , And the spacer are arranged in even rows, but has a configuration which not adjacent to each other in the column direction.
- the plurality of spacers include a main spacer that is in contact with both the element substrate and the counter substrate, a sub-spacer that is in contact with either the element substrate or the counter substrate, It is good also as a structure containing.
- the sub-spacer is lower in height than the main spacer, and the liquid crystal layer exists between the sub-spacer and the element substrate. It is good also as a structure provided in the surface.
- the main spacer may be arranged between a blue sub-pixel and a red sub-pixel with low visibility.
- the first portion further includes a third region having a larger area than the first region, and the sub-spacer is disposed in the first region,
- the main spacer may be arranged in three regions.
- the dimension of the spacer in the row direction is a dimension corresponding to the two sub-pixels arranged in the row direction, and the second portion extending in the column direction. It is good also as a structure made into the dimension below combining the said dimension of the said row direction.
- the dimension of the spacer in the column direction may be equal to or less than the dimension of the second portion in the column direction.
- the spacer may be provided in the center of the first region of the black matrix, and the first region may exist around the spacer.
- the planar shape of the spacer viewed from the normal direction of the counter substrate may be any one of an elliptical shape, a trapezoidal shape, a polygonal shape, and a semicircular shape. Good.
- the spacer may have a configuration in which the height of the central portion and the height of the peripheral portion are substantially equal.
- liquid crystal display device in which foreign matter hardly remains at the time of cleaning, and a sufficient holding strength of the liquid crystal cell thickness can be secured.
- FIG. 1 is an exploded perspective view showing a schematic configuration of a liquid crystal display device according to an embodiment.
- the top view which shows a part of display area of a TFT array substrate seen from the counter substrate side.
- FIG. 3 is a cross-sectional view showing a schematic configuration of a sub-spacer and its surroundings of a liquid crystal display device in one embodiment.
- FIG. 3 is a cross-sectional view showing a schematic configuration of a main spacer and its surroundings of a liquid crystal display device in one embodiment.
- the top view which shows the position of the main spacer of the opposing board
- the top view which shows schematic structure of the opposing board
- FIG. 6 is a plan view showing the arrangement of sub-spacers in the configuration of Comparative Example 1.
- the top view which shows the shape of a subspacer and a black matrix.
- the side view which shows the shape of the sub-spacer or main spacer which has length.
- the top view which shows the positional relationship of the sub-spacer and through-hole in one Embodiment.
- the top view which shows the positional relationship of the subspacer in the structure of the comparative example 2, and a through hole.
- FIG. 4A and 4B illustrate a step in manufacturing a liquid crystal display device according to one embodiment of the present invention.
- FIG. The figure for demonstrating the mode of washing
- FIG. The figure which shortened the length of the sub-spacer among the structures of the comparative example 1.
- FIG. The figure which shows the structure of one Embodiment.
- the 1st figure which shows the example of a shape of a subspacer.
- the 2nd figure which shows the example of a shape of a subspacer.
- the liquid crystal display device includes a pair of electrodes on one of a pair of substrates sandwiching a liquid crystal layer, and a liquid crystal of a lateral electric field type that drives the liquid crystal with an electric field applied between the pair of electrodes. It is a display device.
- an active matrix liquid crystal display device using the FFS method will be described as an example.
- FIG. 1 is an exploded perspective view showing a schematic configuration of a liquid crystal display device 1 according to an embodiment.
- the scale of dimensions may be different depending on the component.
- the liquid crystal display device 1 of the present embodiment includes a backlight 2, a polarizing plate 3, a liquid crystal cell 4, and a polarizing plate 5 from the back as viewed from the observer. .
- the liquid crystal display device 1 of the present embodiment is a transmissive liquid crystal display device, and performs display by controlling the transmittance of light emitted from the backlight 2 by the liquid crystal cell 4.
- the liquid crystal cell 4 has a thin film transistor (hereinafter, abbreviated as TFT) array substrate 6 and a counter substrate 7 which are disposed to face each other, and is disposed between the TFT array substrate (element substrate) 6 and the counter substrate 7.
- a liquid crystal layer 8 is sandwiched.
- a positive type liquid crystal material is used for the liquid crystal layer 8, but a negative type liquid crystal material may be used.
- the TFT array substrate 6 has a plurality of sub-pixels 10 arranged in a matrix on a substrate 9, and a display region (screen) is configured by the plurality of sub-pixels 10.
- the counter substrate 7 includes a color filter 12 on a substrate 11.
- the display area includes a plurality of source bus lines (signal lines) arranged in parallel to each other and a plurality of gate bus lines (scanning lines) arranged in parallel to each other. ing.
- the plurality of source bus lines and the plurality of gate bus lines are arranged to cross each other.
- the display area is partitioned in a lattice pattern by a plurality of source bus lines and a plurality of gate bus lines, and each partitioned substantially rectangular area is a sub-pixel 10.
- any one coloring pattern of red (R), green (G), and blue (B) of the color filter 12 corresponds to one sub-pixel 10.
- the “coloring pattern” in this specification is a minimum unit region of a specific color of the color filter 12 corresponding to one subpixel 10.
- FIG. 2 is a plan view showing a part of the display area of the TFT array substrate 6 as viewed from the counter substrate 7 side.
- the sub-spacer (spacer) SP ⁇ b> 1 and the black matrix BM constituting the counter substrate 7 are illustrated, and the positional relationship with the sub-pixel 10 is illustrated.
- the TFT array substrate 6 crosses a plurality of source bus lines (SL1 to SLm) and a plurality of source bus lines (SL1 to SLm) arranged adjacent to each other in parallel.
- a plurality of gate bus lines (GL1 to GLn) and a plurality of pixel electrodes 20 arranged adjacent to each other in parallel are provided.
- source bus lines may be collectively referred to as source bus lines SL.
- Gate bus lines may be collectively referred to as gate bus lines GL.
- a portion of the source bus line SL that overlaps the gate bus line GL in a plan view has a linear shape orthogonal to the extending direction of the gate bus line GL.
- a TFT 21 is provided in the vicinity of the intersection where the source bus line SL and the gate bus line GL intersect.
- the TFT 21 is electrically connected to a gate electrode (not shown) electrically connected to the gate bus line GL, a base coat 13, a semiconductor layer (not shown) disposed on the base coat 13, and a source bus line SL.
- a connected source electrode 16 and a drain electrode electrically connected to the pixel electrode 20 are provided.
- the semiconductor layer is made of, for example, amorphous silicon, polycrystalline silicon, or an oxide semiconductor (such as InGaZnOx).
- the pixel electrode 20 and the drain electrode of the TFT 21 are connected via the through hole TH.
- the semiconductor layer and the source electrode 16 are connected through a through hole AC.
- Scan signals are sequentially supplied to a plurality of gate bus lines (GL1 to GLn) in the order of GL1, GL2, GL3,.
- the TFT is driven in units of horizontal lines.
- An image signal for one horizontal line is supplied to the plurality of source bus lines (SL1 to SLm) for each horizontal period in which a scan signal is supplied to the gate bus line GL from a source driver (not shown).
- a plurality of source bus lines (SL1 to SLm) and a plurality of gate bus lines (GL1 to GLn) are arranged so as to cross each other.
- a region surrounded by two adjacent source bus lines SL and two adjacent gate bus lines is one sub-pixel 10.
- the black matrix BM is formed in a region overlapping the plurality of source bus lines (SL1 to SLm) and the plurality of gate bus lines (GL1 to GLn) in plan view.
- the opening area of the opening BMh of the black matrix BM is defined to be smaller than the area of the sub-pixel 10.
- sub-pixels 10 that are the minimum unit of display are arranged in a matrix.
- the width of the source bus line SL and the width of the gate bus line GL are each smaller than the width of the black matrix BM.
- the sizes of the sub-pixels 10 are, for example, a horizontal width W1 of about 20 ⁇ m and a vertical width W2 of about 60 ⁇ m.
- the horizontal width W1 is the length of the sub-pixel 10 in the row direction V1.
- the vertical width W2 is the length of the sub-pixel 10 in the column direction V2.
- the “row direction V1” is a direction along the extending direction of the gate bus line GL
- the “column direction V2” is a direction along the extending direction of the source bus line SL.
- FIG. 3 is a cross-sectional view showing a schematic configuration of a sub-spacer of the liquid crystal display device and its surroundings in one embodiment.
- FIG. 4 is a cross-sectional view showing a schematic configuration of a main spacer and its surroundings of a liquid crystal display device according to an embodiment. 3 and 4, illustration of the backlight 2, the polarizing plate 3, the polarizing plate 5, and the like shown in FIG. 1 is omitted for the sake of convenience.
- the TFT array substrate 6 includes a substrate 9 made of a transparent substrate such as a glass substrate.
- a base coat 13 is formed on the substrate 9.
- an inorganic insulating material such as a silicon nitride film, a silicon oxide film, a silicon nitride oxide film, or a stacked film thereof can be used.
- a gate electrode (not shown) is formed on the gate insulating film 14.
- a material for forming the gate electrode for example, a laminated film of W (tungsten) / TaN (tantalum nitride), Mo (molybdenum), Ti (titanium), Al (aluminum), or the like can be used.
- the gate electrode is constituted by a part of the gate bus line GL.
- a gate insulating film 14 is formed on the gate electrode.
- a material for forming the gate insulating film 14 an inorganic insulating material similar to that of the base coat 13 described above can be used.
- An interlayer insulating film 15 is formed on the gate insulating film 14.
- a material for forming the interlayer insulating film 15 an inorganic insulating material similar to that of the base coat 13 described above can be used.
- a source electrode 16 is formed on the interlayer insulating film 15.
- a material for forming the source electrode 16 a conductive material similar to that of the gate electrode described above can be used.
- An organic insulating film 17 is formed on the interlayer insulating film 15 so as to cover the source electrode 16.
- an organic insulating material such as polyimide, polyamide, acrylic, polyimide amide, benzocyclobutene, or the like can be used.
- a common electrode 18 is formed on the organic insulating film 17.
- a transparent conductive material such as ITO (Indium (Tin Oxide) or IZO (Indium ZincOxide) can be used.
- a protective film 25 is formed on the common electrode 18.
- the same inorganic insulating material as that of the base coat 13 described above can be used.
- the protective film 25 is formed so as to cover the common electrode 18 and insulates the common electrode 18 and the pixel electrode 20.
- the pixel electrode 20 is formed on the protective film 25.
- a material for forming the pixel electrode 20 the same transparent conductive material as that for the common electrode 18 described above can be used.
- An alignment film (not shown) is formed on the outermost surface (the liquid crystal layer 8 side) of the TFT array substrate 6. The alignment film has an alignment regulating force that horizontally aligns the liquid crystal molecules constituting the liquid crystal layer 8.
- the counter substrate 7 is a color filter substrate in which a color filter 12 and a black matrix BM are formed on a substrate 11. On the substrate 11, a black matrix BM and a color filter 12 are formed in this order. An overcoat 22 is formed on the liquid crystal layer 8 side of the color filter 12.
- a plurality of sub-spacers (spacers) SP1 are formed on the overcoat 22 on the liquid crystal layer 8 side.
- the sub-spacer SP1 has a predetermined height, is formed on the counter substrate 7 side, and does not contact the TFT array substrate 6.
- the sub-spacer SP1 is a spacer for improving the strength against the pressing force when the liquid crystal display device 1 is pressed from the counter substrate 7 side.
- An alignment film (not shown) is formed on the outermost surface (the liquid crystal layer 8 side) of the counter substrate 7.
- the main spacer SP2 is a columnar spacer that maintains the cell thickness of the liquid crystal cell 4 uniformly.
- FIG. 5 is a plan view showing the position of the main spacer of the counter substrate in one embodiment.
- a red sub-pixel 10R that emits R (red) light
- a green sub-pixel 10G that outputs G (green) light
- a blue sub-pixel that outputs B (blue) light.
- the pixel 10B and the three sub-pixels constitute one pixel P.
- the red subpixel 10R, the green subpixel 10G, and the blue subpixel 10B are arranged in this order along the row direction V1.
- a plurality of sub-spacers SP1 and a plurality of main spacers SP2 are provided on the counter substrate 7 side.
- the sub-spacer SP1 is lower than the main spacer SP2, and is provided on the surface of the counter substrate 7 on the TFT array substrate 6 side so that the liquid crystal layer 8 exists between the sub-spacer SP1.
- the main spacer SP2 is provided at a predetermined position so that the cell thickness can be uniformly maintained in the display area, and the number of the spacers to be installed is also arbitrary.
- the main spacer SP2 is disposed between the blue sub-pixel 10B and the red sub-pixel 10R, which are low-visibility colors, due to the problem of color visibility such that the green visibility is high. is doing.
- the planar shape of the sub-spacer SP1 is elliptical, and the planar shape of the main spacer SP2 is circular.
- the sub-spacer SP1 has an elliptical shape having a dimension in the row direction V1 rather than the column direction V2.
- the planar shapes of the sub-spacer SP1 and the main spacer SP2 are not limited to the shapes described above.
- the planar shape of the sub-spacer SP1 may be trapezoidal, polygonal, or semicircular.
- the main spacer SP2 may have the same shape as the sub-spacer SP1.
- FIG. 6A is a plan view illustrating a schematic configuration of a counter substrate according to an embodiment.
- the sub-spacer SP1 is provided at a ratio of every four sub-pixels 10 in the column direction (column direction V2) and the row direction (row direction V1) of the pixel array.
- Each of the two sub-pixels 10 is arranged. That is, the sub-spacers SP11 arranged in the odd rows and the sub-spacers SP12 arranged in the even rows are not adjacent to each other in the column direction.
- sub-spacer SP11 and SP12 are simply referred to as sub-spacer SP1.
- the plurality of sub-pixels 10 are partitioned by a black matrix BM provided on the counter substrate 7 side.
- the black matrix BM has a plurality of first portions BM1 and a plurality of second portions BM2.
- Each first portion BM1 extends along the row direction (row direction) V1 and exists between sub-pixels 10 of the same color that are adjacent in the column direction (column direction) V2.
- Each second portion BM2 extends along the column direction V2 and exists between sub-pixels 10 of different colors adjacent in the row direction V1.
- the first portion BM1 has an enlarged portion (first region) 23 and a reduced portion (second region) 24, which alternately exist in the extending direction.
- the sub-spacer SP ⁇ b> 1 is disposed at a position overlapping the enlarged portion 23 in plan view.
- the enlarged portion (third region) where the main spacer SP2 is arranged ) 33 is provided in any one of the plurality of first portions BM1, in addition to the enlarged portion 23 and the reduced portion 24 where the sub-spacer SP1 is arranged.
- the enlarged portion 33 has a larger area than the enlarged portion 23.
- the second portion BM2 prevents color mixture between the sub-pixels 10R, 10G, and 10B, and has a shape narrower than that of the reduction unit 24.
- the sub-spacer SP1 is disposed in the enlarged portion 23 and the main spacer SP2 is disposed in the enlarged portion 33.
- the sub-spacer SP1 or the main spacer SP2 is disposed in each of the enlarged portions 23 and 33. May not be arranged. There may be enlarged portions 23 and 33 where the sub-spacer SP1 or the main spacer SP2 is not disposed.
- FIG. 6B is a plan view showing the arrangement of sub-spacers in the configuration of Comparative Example 1.
- FIG. 6B the sub-spacer SP1 is provided at a ratio of one for every six sub-pixels 10, so that the shape of the three sub-pixels 10 constituting one pixel P is the same. It was a layout.
- the shape of the two sub-pixels 10 out of the three sub-pixels 10 constituting one pixel P is the same layout. That is, the remaining one sub-pixel 10 has the same layout as one sub-pixel 10 in another adjacent pixel. Therefore, the two sub-pixels 10 have the same layout in the pixel array arranged in the row direction V1.
- the aperture ratio of the black matrix BM of the present embodiment shown in FIG. 6A is maintained substantially equal to the aperture ratio of the black matrix BM of the conventional configuration shown in FIG. 6B.
- FIG. 7 is a plan view showing the shapes of the sub-spacer and the black matrix.
- FIG. 5 is also referred to as appropriate.
- the configuration of the black matrix BM and the sub-spacer SP1 will be described in detail with reference to FIGS.
- the width W1 of the second portion BM2 extending in the column direction V2 in the black matrix BM is approximately 4 to 6 ⁇ m.
- the width W1 of the second part BM2 corresponds to the interval between the sub-pixels 10 of different colors.
- the width W2 of the reduced portion 24 of the first portion BM1 extending in the row direction V1 is approximately 12 to 16 ⁇ m.
- the width W2 of the reduction unit 24 corresponds to the interval between the sub-pixels 10 of the same color where the sub-spacer SP1 is not disposed.
- the width W3 of the enlarged portion 23 of the first portion BM1 is approximately 15 to 21 ⁇ m.
- the width W3 of the enlarged portion 23 corresponds to the interval between the sub-pixels 10 of the same color where the sub-spacer SP1 is disposed.
- the sub-spacer SP1 has an elliptical shape in plan view, and the dimension in the row direction V1 is longer than the dimension in the column direction V2. More specifically, the side surfaces on both sides in the column direction V2 are flat, and the side surfaces on both sides in the row direction V1 are semicircular.
- the length (horizontal width) L1 of the sub-spacer SP1 in the row direction V1 includes a dimension M corresponding to the two sub-pixels 10 arranged in the row direction V1, and a width dimension W1 of the second portion BM2 of the black matrix BM. It is the dimension below the combined length.
- the main spacer SP2 may be formed with the same dimensions as the sub-spacer SP1.
- the vertical width L2 in the column direction V2 of the sub-spacer SP1 is not more than the dimension in the row direction V1 of the enlarged portion 23 of the black matrix BM, and is about 8 to 12 ⁇ m in this embodiment.
- the sub-spacer SP1 is provided at the center of the enlarged portion 23 of the black matrix BM, and the enlarged portion 23 is present (exposed) around the sub-spacer SP1. As a result, even if the liquid crystal alignment is disturbed by the sub-spacer SP1, the region can be shielded from light by the enlarged portion 23.
- the main spacer SP2 shown in FIG. 5 has a height higher than that of the sub-spacer SP1, the alignment disorder of the liquid crystal tends to occur around the main spacer SP2. Therefore, the area of the enlarged portion 33 of the black matrix BM that overlaps the main spacer SP2 in plan view is made larger than the area of the enlarged portion 23 that overlaps the sub-spacer SP1 in plan view. As a result, even if the alignment of the liquid crystal is disturbed by the main spacer SP2, the area can be shielded from light by the enlarged portion 33.
- FIG. 8 is a side view showing the shape of the sub-spacer or main spacer.
- the sub-spacer SP1 of the present embodiment has a shape in which the height of the central portion in the cross section and the height of the peripheral portion are substantially equal (see FIG. 3).
- the photosensitive resin swells to the periphery at the time of manufacturing the sub-spacer SP1, and the center The part is recessed. For this reason, the shorter the length L1 of the sub-spacer SP1, the more the depression of the central portion can be suppressed.
- the height of the central part in the cross section and the height of the peripheral part are substantially equal (see FIG. 4). Even when the main spacer SP2 has the same shape as the sub-spacer SP1, as shown in FIG. 8, if the extension length L1 of the main spacer SP2 in the row direction V1 is increased, the main spacer SP2 is manufactured. At times, the photosensitive resin swells to the periphery, and the central portion is recessed. For this reason, the shorter the length L1 of the main spacer SP2, the more the depression of the central portion can be suppressed.
- the pressing strength becomes weak.
- a dent condition range shown with the arrow in a figure
- FIG. 9 is a plan view showing the positional relationship between the sub-spacer and the through hole.
- one sub-spacer SP1 is arranged for every four sub-pixels 10.
- Each sub-spacer SP1 overlaps with a through hole TH of the TFT 21 provided on the TFT array substrate 6 side in a plan view.
- the sub-spacer SP1 of this embodiment is formed across two sub-pixels 10 adjacent in the row direction V1. Therefore, one sub-spacer SP1 overlaps with the through holes TH of the two sub-pixels 10, and the central portion of the sub-spacer SP1 is located between the two through-holes TH.
- main spacer SP2 has the same shape as the sub-spacer SP1 and any one of the plurality of sub-spacers SP1 shown in the figure is the main spacer SP2, a single main spacer SP2 is formed in the same manner as the sub-spacer SP1 described above. Overlaps with the through holes TH of the two sub-pixels 10.
- one sub-spacer SP overlaps the through hole TH in one sub-pixel 10.
- the shape of the sub-spacer SP in plan view is close to a circle, and the area overlapping the through hole TH is larger than that of the configuration of the present embodiment.
- the cross-sectional shape of the through hole TH is concave.
- FIG. 11 is a diagram illustrating a process for manufacturing a liquid crystal display device according to one embodiment of the present invention.
- the liquid crystal display device according to one embodiment of the present invention can be obtained by collectively manufacturing a plurality of panels from a large mother glass.
- a plurality of liquid crystal panels 44 set on the mother glass are shown in a simplified manner, and the outer shape of the liquid crystal panel 44 and the sub-spacer SP1 are shown.
- arrow E in the figure indicates the direction in which the mother glass is cleaned in the cleaning process.
- the extending direction of the sub-spacer SP1 provided in each liquid crystal panel 44 intersects the direction in which the cleaning liquid flows during the cleaning process of the large mother glass 70.
- the reason for this setting is to increase the number of liquid crystal panels 44 from the mother glass 70 as much as possible.
- the extension direction of the sub-spacer SP1 is formed so as to be along the cleaning direction of the mother glass 70, the number of liquid crystal panels 44 that can be manufactured from one mother glass 70 is reduced.
- FIG. 12A is a diagram for explaining a state of cleaning in manufacturing the liquid crystal display device of the present embodiment.
- FIG. 12B is a diagram for explaining a state of cleaning in manufacturing the liquid crystal display device of Comparative Example 1.
- a part of the liquid crystal panel 44 formed on the mother glass substrate (on the opposite substrate side) is shown in an enlarged manner.
- the sub-spacer SP has a length that extends over the three sub-pixels 10, so that the foreign matter G is easily caught during cleaning.
- the extension length of the sub-spacer SP1 is as short as extending over the two sub-pixels 10, so that it is more effective at the time of cleaning than the configuration of Comparative Example 1. Foreign matter G is not easily caught.
- an angle connecting one end in the row direction V1 and the end portion p on the V1 side between the sub-spacers SP1 closest to each other in the cleaning direction is defined as ⁇ 2.
- the angle between one end in the row direction V1 and the end q on the V1 side between the sub-spacers SP1 closest in the cleaning direction is defined as ⁇ 1.
- the relationship between the angle ⁇ 1 of the arrangement of the sub-spacers SP1 with respect to the cleaning direction in the configuration of the comparative example 1 and the angle ⁇ 2 of the arrangement of the sub-spacers SP1 in the configuration of the present embodiment is ⁇ 2> ⁇ 1.
- the angle ⁇ of the arrangement of the sub spacers SP1 with respect to the cleaning direction is larger, so that the flow of the cleaning liquid flowing between the sub spacers SP1 approaches the cleaning direction indicated by the arrow E.
- the foreign matter G is less likely to be caught on the sub-spacer SP1 than the configuration of the comparative example 1, and it is easy to flow together with the cleaning liquid. Therefore, foreign matters are unlikely to remain on the substrate during cleaning, and the performance of the liquid crystal display device can be improved.
- FIG. 13A is a diagram in which the lateral width of the columnar spacer is shortened in the configuration of Comparative Example 1
- FIG. 13B is a diagram illustrating the configuration of the present embodiment.
- the lateral width (extending length in the row direction V1) of the sub-spacer SP is shortened as shown in FIG. 13A.
- the length (shape) is the same as that of the sub-spacer SP1 of the present embodiment. For this reason, foreign matters are less likely to be caught on the sub-spacer SP during cleaning.
- the shape of the black matrix BM remains the same as that of the comparative example 1.
- the enlargement portion 53 exists over the three subpixels 10 arranged in the row direction V1
- the reduction portion 54 exists over the three subpixels 10 adjacent in the same direction. It is configured.
- the black matrix BM is also present in the region of the enlarged portion 53 where the sub-spacer SP is not present, and the sub-spacer SP shields light from the region where the liquid crystal alignment is not disturbed, resulting in an inefficient aperture ratio. It has become.
- one sub-spacer SP1 is arranged for two sub-pixels 10 arranged in the row direction V1, and therefore the configuration of Comparative Example 1 shown in FIG. 13A. More sub spacers SP1 are provided. Therefore, even if the lateral width (extending length in the row direction V1) of the sub-spacer SP1 is short, the holding strength of the cell thickness is ensured.
- the enlarged portion 23 of the black matrix BM in the present embodiment has a size corresponding to the two sub-pixels 10 in the same manner as the sub-spacer SP1. For this reason, only the region where the alignment disorder of the liquid crystal occurs is efficiently shielded by the sub-spacer SP1. Therefore, according to the present embodiment, not only is foreign matter hardly caught during cleaning, but also the black matrix BM can be efficiently used for shielding the sub-spacer SP1.
- one sub-spacer SP is provided between the sub-pixels 50 as in the configuration shown in FIG. 16A.
- the distance between adjacent sub-spacers SP is close, one sub-spacer SP cannot be formed between the sub-pixels 50. Therefore, as shown in FIG. 16B, a horizontally long sub-spacer SP in which two sub-spacers SP corresponding to two sub-pixels 50 are merged is provided. As the definition becomes higher, the sub-spacer SP is arranged so as to overlap the TFT element on the TFT array substrate 6 side.
- a contact portion (hereinafter referred to as a through hole TH) between the TFT 21 and the pixel electrode 20 has a concave surface shape.
- the ratio of the area of the portion where the sub-spacer SP disposed between the sub-pixels 50 is formed so as to overlap the through hole TH increases.
- the through hole TH has a recessed shape, the force for maintaining the liquid crystal cell thickness by the sub-spacer SP is weakened. In order to avoid this, it is necessary to increase the formation area of the sub-spacer SP.
- the sub-spacer SP When one sub-spacer SP is arranged in six sub-pixels 50 as shown in FIG. 16C, the sub-spacer SP extends across the three sub-pixels 50R, 50G, and 50B constituting one pixel P. It has a shape with.
- the lateral width of the sub-spacer SP becomes long, foreign matters such as dust are caught by the sub-spacer SP during the cleaning process performed after the sub-spacer SP is formed, and it becomes difficult to remove. If foreign substances are present on the substrate, the liquid crystal alignment may be disturbed, and fine bright spots may be generated.
- the configuration of the present embodiment by arranging the sub-spacer SP at a rate of one for every four pixels, it is difficult for foreign matters to remain during cleaning, and the holding strength (pressing pressure strength) of the liquid crystal cell thickness is increased.
- a liquid crystal display device that can be sufficiently secured can be provided.
- the overlapping area between the sub-spacer SP and the through hole TH can be reduced even with high definition.
- the shape of the sub-spacer SP (the length in the row direction V1) to the above-described dimensions, the foreign matters can be efficiently removed when the cleaning liquid is passed in the cleaning process, and the foreign matters remain on the substrate. Can be prevented. Thereby, in the manufactured liquid crystal display device, the disorder of the alignment of the liquid crystal due to the foreign matter is suppressed, and the generation of minute bright spots can be suppressed.
- the sub-spacer SP1 having an elliptical shape in plan view is provided.
- the shape of the sub-spacer SP1 in plan view is not limited to the shape described above.
- the planar shape of the sub-spacer SP1 as viewed from the normal direction of the counter substrate 7 may be a dimension in which the upstream side surface is shorter than the downstream side surface in the direction in which the cleaning liquid flows.
- a sub-spacer SP13 having a trapezoidal shape in plan view may be used.
- the sub-spacer SP13 has a shorter dimensional shape on the side surface 13a on the upstream side than the side surface 13b on the downstream side in the flow direction (column direction V2) indicated by the arrow E in the drawing. Therefore, inclined surfaces 13c and 13c that connect the side surface 13a and the side surface 13b are provided on both sides in the extending direction of the sub-spacer.
- a sub-spacer SP14 having a polygonal shape in plan view may be used.
- the sub-spacer SP14 has inclined surfaces 14c and 14d that are inclined at a predetermined angle with respect to the direction (column direction V2) in which the cleaning liquid flows indicated by an arrow E in the drawing on both sides in the extending direction.
- the common electrode 18 and the pixel electrode are disposed on one of the substrates (the TFT array substrate 6 in the present embodiment) among the pair of substrates sandwiching the liquid crystal layer 8. 20, and an electric field in a substantially lateral direction (a direction substantially parallel to the substrate) is applied to the liquid crystal layer 8.
- an electric field in a substantially lateral direction (a direction substantially parallel to the substrate) is applied to the liquid crystal layer 8.
- the director of the liquid crystal molecules does not rise in the direction perpendicular to the substrate, there is an advantage that the viewing angle is widened.
- the horizontal electric field type liquid crystal display device includes an IPS (In-Plane Switching) type liquid crystal display device and an FFS (Fringe Field Switching) type liquid crystal display device, depending on the difference in electrode configuration.
- IPS In-Plane Switching
- FFS Frringe Field Switching
- a pixel electrode including a plurality of strip electrodes is formed in a sub-pixel, and the alignment of the liquid crystal layer is controlled in the arrangement direction of the plurality of strip electrodes.
- the configuration of this embodiment can also be applied to a liquid crystal display device in which pixels are multi-domained to improve the viewing angle as shown in FIG.
- the multi-domain liquid crystal display device has a configuration in which the inclination direction of the pixel electrode 20A and the inclination direction of the pixel electrode 20B are different from each other in the sub-pixels 40 adjacent to each other in the column direction V2.
- the main spacer has the same shape as the sub-spacer, and any of the plurality of sub-spacers shown in FIGS. 6A to 15 is used as the main spacer, the description of the sub-spacer is the same as described above.
- One embodiment of the present invention can be applied to a liquid crystal display device or the like in which foreign matters are unlikely to remain during cleaning and a sufficient holding strength of the liquid crystal cell thickness can be secured.
- SYMBOLS 1 Liquid crystal display device, 6 ... TFT array substrate (element substrate), 7 ... Opposite substrate, 8 ... Liquid crystal layer, 9, 11 ... Substrate, G ... Foreign substance, P ... Pixel, 10 (10R, 10G, 10B) ... Sub Pixel, 13a, 13b ... Side, 13c, 14c ... Inclined surface, 23 ... Enlarged portion (first region), 24 ... Reduced portion (second region), BM ... Black matrix, L1, L2 ... Length, SP1 (SP11) , SP12, SP13, SP14) ... sub spacer, SP2 ... main spacer, V1 ... row direction, V2 ... column direction, W1 ... horizontal width, W2 ... vertical width
Abstract
Description
本願は、2015年3月6日に、日本に出願された特願2015-045182号に基づき優先権を主張し、その内容をここに援用する。
しかしながら、最大でも3画素あるいは4画素以上に連続してスペーサーは配置されていない。
この場合、スペーサーの延在方向の寸法(横幅)が長くなることで、スペーサーを形成した後に行われる基板表面の洗浄工程の際に、ダストなどの異物がスペーサーに引っかかって除去することが困難になってしまう。基板上に異物が存在していると、液晶の配向乱れが生じて微小輝点が発生するという問題が生じる。
以下、本発明の一実施形態の液晶表示装置について説明する。
本実施形態の液晶表示装置は、液晶層を挟持する一対の基板のうち、一方の基板上に一対の電極を備え、これら一対の電極間に印加する電界で液晶を駆動する横電界方式の液晶表示装置である。本実施形態では、一例として、FFS方式を用いたアクティブマトリクス方式の液晶表示装置を挙げて説明する。
なお、以下の各図面においては、各構成要素を見やすくするため、構成要素によって寸法の縮尺を異ならせて示すことがある。
ソースバスラインSLとゲートバスラインGLとが交差する交差部の近傍にはTFT21が設けられている。
複数のソースバスライン(SL1~SLm)には、図示略のソースドライバーから、ゲートバスラインGLにスキャン信号が供給される1水平期間ごとに、1水平ライン分の画像信号が供給される。
本実施形態では、ブラックマトリクスBMの開口部BMhの開口面積が、サブ画素10の面積よりも小さくなるように規定されている。TFTアレイ基板6には、表示の最小単位であるサブ画素10がマトリクス状に配置されている。
図3は、一実施形態における液晶表示装置のサブスペーサーおよびその周囲の概略構成を示す断面図である。図4は、一実施形態における液晶表示装置のメインスペーサーおよびその周囲の概略構成を示す断面図である。なお、図3及び図4において、便宜上、図1で示したバックライト2、偏光板3及び偏光板5等の図示を省略している。
先ず、TFTアレイ基板6の構成について説明する。
図3に示すように、TFTアレイ基板6は、ガラス基板等の透明基板からなる基板9を備えている。基板9上には、ベースコート13が形成されている。ベースコート13としては、例えば窒化シリコン膜、酸化シリコン膜、窒化酸化シリコン膜またはこれらの積層膜等の無機絶縁性材料を用いることができる。
基板11としては、ガラス基板等の透明基板を用いることができる。対向基板7は、基板11にカラーフィルター12とブラックマトリクスBMとが形成された、カラーフィルター基板である。基板11上には、ブラックマトリクスBM及びカラーフィルター12がこの順で形成されている。カラーフィルター12の液晶層8側には、オーバーコート22が形成されている。
図5に示すように、本実施形態では、R(赤)色光を射出する赤色サブ画素10Rと、G(緑)色光を出力する緑色サブ画素10Gと、B(青)色光を出力する青色サブ画素10Bと、の3個のサブ画素で、1個の画素Pを構成している。赤色サブ画素10R、緑色サブ画素10G及び青色サブ画素10Bは、行方向V1に沿ってこの順に配置されている。
サブスペーサーSP1は、図6A中の破線で囲む領域で示すように4つのサブ画素10ごとに一つの割合で設けられ、画素配列の列方向(列方向V2)及び行方向(行方向V1)にそれぞれ2つのサブ画素10おきに配置されている。つまり、奇数行に配列されたサブスペーサーSP11と、偶数行に配列されたサブスペーサーSP12と、が、列方向では互いに隣り合わない配置となっている。
第2部分BM2は、サブ画素10R,10G,10Bどうしの混色を防止するもので、縮小部24よりも狭い形状とされている。
比較例1の構成においては、図6Bに示すように、サブスペーサーSP1が6つのサブ画素10ごとに一つの割合で設けられていたため、1画素Pを構成する3つのサブ画素10の形状が同じレイアウトとなっていた。
図5及び図7を用いて、ブラックマトリクスBM及びサブスペーサーSP1の構成について詳述する。
図5及び図7に示すように、ブラックマトリクスBMのうち列方向V2に延在する第2部分BM2の幅W1は、およそ4~6μmである。第2部分BM2の幅W1は、異なる色のサブ画素10どうしの間隔に相当する。
図7に示すように、サブスペーサーSP1は、平面視楕円形状を呈し、列方向V2の寸法よりも行方向V1の寸法の方が長い。より具体的には、列方向V2の両側の側面が平面であり、行方向V1の両側の側面が半円状となっている。サブスペーサーSP1の行方向V1における長さ(横幅)L1は、行方向V1に配列された2つのサブ画素10に相当する寸法Mと、ブラックマトリクスBMの第2部分BM2の幅寸法W1と、を併せた長さ以下の寸法とする。
なお、メインスペーサーSP2をサブスペーサーSP1と同じ寸法で形成してもよい。
サブスペーサーSP1の列方向V2における縦幅L2は、ブラックマトリクスBMの拡大部23の行方向V1の寸法以下とし、本実施形態では、およそ8~12μmである。
本実施形態のサブスペーサーSP1は、断面における中央部位の高さと、周縁部位の高さとが略等しい形状とされている(図3参照)。
これに対して、図8に示すように、サブスペーサーSP1の行方向V1における延在長さL1が長い場合には、サブスペーサーSP1の製造時において、感光性樹脂が周辺に盛り上がってしまい、中央部分が凹んでしまう。そのため、サブスペーサーSP1の長さL1は短い方が中央部分の凹みを抑制することができる。
本実施形態では、図9に示すように4つのサブ画素10ごと一つのサブスペーサーSP1を配置している。各サブスペーサーSP1は、TFTアレイ基板6側に設けられたTFT21のスルーホールTHと平面視で重なっている。本実施形態のサブスペーサーSP1は、行方向V1で隣り合う2つのサブ画素10に亘って形成される。そのため、一つのサブスペーサーSP1は、2つのサブ画素10のスルーホールTHと重なっており、双方のスルーホールTHの間にサブスペーサーSP1の中央部分が位置している。
図11に示すように、本発明の一態様による液晶表示装置は、大判のマザーガラスから複数個のパネルを一括して作製することによって得られる。図中では、マザーガラス上に設定された複数の液晶パネル44を簡略化して示しており、液晶パネル44の外形とサブスペーサーSP1を図示している。また、図中における矢印Eは、洗浄工程においてマザーガラスを洗浄する方向を示している。
ここでは、マザーガラス基板に形成した液晶パネル44の一部(対向基板側)を拡大して示している。
洗浄工程時に異物を流れやすくするために、図13Aに示すようにサブスペーサーSPの横幅(行方向V1への延在長さ)を短くした。ここでは、本実施形態のサブスペーサーSP1と同じ長さ(形状)とした。そのため、洗浄時に異物がサブスペーサーSPに引っかかりにくくなった。
例えば、対向基板7の法線方向から見たサブスペーサーSP1の平面形状が、洗浄液が流れる方向の下流側の側面よりも上流側の側面の方が短い寸法形状とされていてもよい。
Claims (10)
- 素子基板と、
前記素子基板に対向する対向基板と、
前記素子基板と前記対向基板との間に挟持された液晶層と、
前記素子基板と前記対向基板との間に配置された複数のスペーサーと、
前記対向基板の前記素子基板側の面に設けられ、列方向に配列された複数のサブ画素を分離すべく行方向に延在する第1部分と、行方向へ配置された複数のサブ画素を分離すべく列方向に延在する第2部分と、を有するブラックマトリクスと、を備え、
前記第1部分は、第1領域と、前記第1領域よりも面積の狭い第2領域と、が、前記行方向へ配列された2つのサブ画素毎にそれぞれ交互に配置されてなり、
複数の前記第1領域のうちのいずれかに前記スペーサーが配置され、
奇数行に配列された前記スペーサーと、偶数行に配列された前記スペーサーと、が、
列方向では互いに隣り合わない配置となっている液晶表示装置。 - 前記複数のスペーサーは、前記素子基板及び前記対向基板の双方に接するメインスペーサーと、前記素子基板と前記対向基板とのいずれか一方に接するサブスペーサーと、を含む
請求項1に記載の液晶表示装置。 - 前記サブスペーサーは、前記メインスペーサーよりも高さが低く、前記素子基板との間に前記液晶層が存在するように前記対向基板の前記素子基板側の面に設けられている
請求項2に記載の液晶表示装置。 - 前記メインスペーサーは、視認性の低い青色のサブ画素と赤色のサブ画素との画素間に配置されている請求項2または3に記載の液晶表示装置。
- 前記第1部分は、前記第1領域よりも広い面積とされた第3領域をさらに有し、
前記第1領域に前記サブスペーサーが配置され、
前記第3領域に前記メインスペーサーが配置されている
請求項2から4のいずれか一項に記載の液晶表示装置。 - 前記スペーサーの前記行方向の寸法は、前記行方向に配列された2つの前記サブ画素に相当する寸法と、前記列方向に延在する前記第2部分の前記行方向の寸法と、を併せた寸法以下とする
請求項1から5のいずれか一項に記載の液晶表示装置。 - 前記スペーサーの前記列方向の寸法は、前記第2部分の前記列方向の寸法以下とする
請求項1から6のいずれか一項に記載の液晶表示装置。 - 前記ブラックマトリクスの前記第1領域の中央に前記スペーサーが設けられ、前記スペーサーの周囲に前記第1領域が存在している
請求項1から7のいずれか一項に記載の液晶表示装置。 - 前記対向基板の法線方向から見た前記スペーサーの平面形状が、楕円形状、台形状、多角形状、半円形状のうちのいずれかである
請求項1から8のいずれか一項に記載の液晶表示装置。 - 前記スペーサーは、中央部位の高さと、周縁部位の高さと、が略等しい形状とされている
請求項1から9のいずれか一項に記載の液晶表示装置。
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US15/555,769 US10203562B2 (en) | 2015-03-06 | 2016-03-03 | Liquid crystal display device |
CN201680013746.3A CN107407843B (zh) | 2015-03-06 | 2016-03-03 | 液晶显示装置 |
JP2017505287A JP6422196B2 (ja) | 2015-03-06 | 2016-03-03 | 液晶表示装置 |
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CN104880879A (zh) * | 2015-06-19 | 2015-09-02 | 京东方科技集团股份有限公司 | Coa阵列基板及其制造方法、显示装置 |
CN108181765A (zh) * | 2018-01-30 | 2018-06-19 | 厦门天马微电子有限公司 | 一种显示面板和显示装置 |
JP2020173352A (ja) * | 2019-04-11 | 2020-10-22 | シャープ株式会社 | 表示パネル及び表示装置 |
CN112782892A (zh) * | 2019-11-06 | 2021-05-11 | 群创光电股份有限公司 | 显示装置 |
US11415838B2 (en) * | 2019-11-06 | 2022-08-16 | Innolux Corporation | Display device |
CN111190311A (zh) * | 2020-01-07 | 2020-05-22 | Tcl华星光电技术有限公司 | 显示面板 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004061904A (ja) * | 2002-07-30 | 2004-02-26 | Sharp Corp | カラーフィルタ基板および表示装置 |
JP2010210676A (ja) * | 2009-03-06 | 2010-09-24 | Toshiba Mobile Display Co Ltd | 液晶表示装置 |
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JP4839889B2 (ja) | 2006-02-28 | 2011-12-21 | カシオ計算機株式会社 | 液晶表示装置 |
KR101325916B1 (ko) * | 2010-07-21 | 2013-11-07 | 엘지디스플레이 주식회사 | 액정표시장치 |
CN203054412U (zh) * | 2013-01-30 | 2013-07-10 | 合肥京东方光电科技有限公司 | 一种阵列基板、显示面板及显示装置 |
JP2014186135A (ja) * | 2013-03-22 | 2014-10-02 | Japan Display Inc | 液晶表示装置 |
US9507222B2 (en) * | 2014-03-14 | 2016-11-29 | Innolux Corporation | Display device |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004061904A (ja) * | 2002-07-30 | 2004-02-26 | Sharp Corp | カラーフィルタ基板および表示装置 |
JP2010210676A (ja) * | 2009-03-06 | 2010-09-24 | Toshiba Mobile Display Co Ltd | 液晶表示装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018008454A1 (ja) * | 2016-07-04 | 2018-01-11 | シャープ株式会社 | 表示装置及びヘッドマウントディスプレイ |
US10890810B2 (en) | 2016-07-04 | 2021-01-12 | Sharp Kabushiki Kaisha | Display device and head-mounted display |
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CN107407843A (zh) | 2017-11-28 |
JPWO2016143674A1 (ja) | 2017-12-21 |
US10203562B2 (en) | 2019-02-12 |
JP6422196B2 (ja) | 2018-11-14 |
CN107407843B (zh) | 2020-11-17 |
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