WO2012066754A1 - Substrat de filtre de couleur et panneau d'affichage - Google Patents

Substrat de filtre de couleur et panneau d'affichage Download PDF

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Publication number
WO2012066754A1
WO2012066754A1 PCT/JP2011/006291 JP2011006291W WO2012066754A1 WO 2012066754 A1 WO2012066754 A1 WO 2012066754A1 JP 2011006291 W JP2011006291 W JP 2011006291W WO 2012066754 A1 WO2012066754 A1 WO 2012066754A1
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Prior art keywords
black matrix
ink
layer
color filter
filter substrate
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PCT/JP2011/006291
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English (en)
Japanese (ja)
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亮輔 高橋
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シャープ株式会社
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • 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
    • G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]

Definitions

  • the present invention relates to a color filter substrate and a display panel, and more particularly to a color filter substrate and a display panel manufactured using an ink jet method.
  • the color filter substrate constituting the liquid crystal display panel is, for example, a transparent substrate such as a glass substrate, a black matrix provided in a lattice shape on the transparent substrate, and between each lattice of the black matrix, that is, in a minimum pixel unit.
  • a plurality of colored layers such as a red layer, a green layer, and a blue layer provided so as to correspond to each subpixel, and a common electrode provided so as to cover the black matrix and each colored layer are provided.
  • the plurality of colored layers are formed by applying a photosensitive resin colored red, green, or blue to the entire substrate on which the black matrix is formed, for example, by spin coating, and then exposing and developing the coated film.
  • a colored layer for example, a red layer
  • the same process is repeated for the other two colors, and the other two colored layers (for example, a green layer and a blue layer) ) Is formed.
  • Patent Document 1 discloses that a method of manufacturing a color filter substrate by forming only a black matrix using photolithography and applying other colors using an ink jet method or the like, multiple times.
  • a manufacturing method is disclosed in which a black matrix is formed by exposing portions to form an optimal shape and liquid repellency.
  • a black colored photosensitive resin is applied to the surface of a glass substrate by spin coating, and then the applied film is exposed and developed to form a black matrix in a lattice shape.
  • oxygen plasma treatment and fluorine plasma treatment are performed on the substrate surface on which the black matrix is formed, thereby making the surface of the black matrix lyophobic and making the surface of the glass substrate lyophilic.
  • a red layer, a green layer and a blue layer are formed by performing a drying process and a baking process, respectively.
  • a transparent conductive film is formed by sputtering, for example, so as to cover the black matrix, the red layer, the green layer, and the blue layer, thereby forming a common electrode.
  • each subpixel is separated from the black matrix.
  • the film thickness of the colored layer is relatively large at the center, and the film thickness of the colored layer is relatively small at the edge contacting the black matrix. It gets smaller.
  • the thickness of the colored layer at the four corners of each subpixel even if the amount of ink ejected to each subpixel is increased, the thickness of the colored layer at the center of each subpixel is It has been experimentally obtained that only the increase is not reflected in the thickness of the colored layer at the four corners of each subpixel. In such a case, even if the average thickness of the colored layer is the same as that formed using photolithography in each subpixel, the minimum thickness of the colored layer is small, so that a predetermined chromaticity may not be obtained. There is.
  • the present invention has been made in view of such points, and an object thereof is to increase the minimum film thickness of the colored layer as much as possible.
  • a black matrix is provided so as to reduce the influence of the liquid repellency of the black matrix on the ink.
  • the color filter substrate according to the present invention includes a transparent substrate, a black matrix provided on the transparent substrate, in which a plurality of openings are arranged, and ink application to each opening of the black matrix.
  • a plurality of colored layers respectively provided on the surface of the black matrix, the surface of the black matrix having liquid repellency to the ink, and the surface of the transparent substrate exposed from the black matrix having lyophilicity to the ink.
  • the black matrix is provided so as to reduce the influence of the liquid repellency on the ink.
  • the surface of the black matrix has liquid repellency to the ink applied by the inkjet method, and the surface of the transparent substrate exposed from the black matrix through each opening has lyophilicity to the ink. Since the film thickness is relatively large at the center of the ink separated from the black matrix, and the film thickness is relatively small at the edge of the ink contacting the black matrix, the coloring is separated from the black matrix. Although the film thickness is relatively large at the center of the layer and the film thickness is relatively small at the edge of the colored layer in contact with the black matrix, the influence of the liquid repellency of the black matrix on the ink is alleviated. Thus, since the black matrix is provided, the amount of ink that contacts the black matrix increases. As a result, the film thickness at the edge portion of the ink to be each colored layer is increased, so that the minimum film thickness of the colored layer is as large as possible.
  • the black matrix may be provided so as to reduce the influence of the liquid repellency on the ink depending on the height of the black matrix.
  • the black matrix is provided so as to reduce the influence of the liquid repellency on the ink due to its height, the amount of ink that contacts the black matrix is specifically increased, and each colored layer The film thickness at the edge of the ink becomes larger.
  • the cross-sectional shape of each colored layer may be a bowl shape.
  • each colored layer since the cross-sectional shape of each colored layer is a bowl shape, it is inferred that each colored layer was formed using an inkjet method.
  • a common electrode may be provided so as to cover each colored layer.
  • the common electrode is provided so as to cover each colored layer, for example, the counter substrate constituting the active matrix drive type display panel is specifically configured by the color filter substrate.
  • the black matrix may be provided in a lattice shape.
  • the black matrix is provided in a lattice shape, for example, a color filter substrate having a stripe arrangement, a mosaic arrangement, a quad (square) arrangement, or the like is specifically configured.
  • the display panel according to the present invention is a display panel including a pair of substrates provided to face each other and a display medium layer provided between the pair of substrates, the pair of substrates
  • One of the above is a transparent substrate, a black matrix provided on the transparent substrate, in which a plurality of openings are arranged, and a plurality of colorings provided by ink application to each opening of the black matrix.
  • the surface of the black matrix has liquid repellency to the ink
  • the surface of the transparent substrate exposed from the black matrix has lyophilicity to the ink
  • the black matrix has the liquid repellency. It is characterized in that it is provided so as to reduce the influence of liquidity on the ink.
  • the surface of the black matrix has liquid repellency with respect to the ink applied by the inkjet method, and is exposed from the black matrix through each opening. Since the surface of the transparent substrate is lyophilic with respect to the ink, the film thickness is relatively large at the center of the ink separated from the black matrix, and the film thickness is relatively at the edge of the ink that contacts the black matrix. Although the film thickness is relatively large at the center of the colored layer spaced from the black matrix and the film thickness is relatively small at the edge of the colored layer in contact with the black matrix, the black matrix The black matrix is provided so as to alleviate the effect of the liquid repellency on the ink. So that the amount of ink in contact with the scan increases. Thereby, in one substrate of the display panel, the film thickness at the edge portion of the ink to be each colored layer is increased, so that the minimum film thickness of the colored layer is increased as much as possible.
  • the black matrix is provided so as to reduce the influence of the liquid repellency of the black matrix on the ink, the minimum thickness of the colored layer can be increased as much as possible.
  • FIG. 1 is a plan view of the color filter substrate according to the first embodiment.
  • FIG. 2 is a cross-sectional view of the color filter substrate and the liquid crystal display panel including the color filter substrate along the line II-II in FIG.
  • FIG. 3 is a cross-sectional view illustrating a part of the manufacturing process of the color filter substrate according to the first embodiment.
  • FIG. 4 is a graph showing the relationship between the thickness of the colored layer and the distribution ratio in Example 1.
  • FIG. 5 is a graph showing the cross-sectional shape of the colored layer in Example 1.
  • FIG. 6 is a graph showing the relationship between the thickness of the colored layer and its distribution rate in Example 2.
  • FIG. 7 is a graph showing the cross-sectional shape of the colored layer in Example 2.
  • FIG. 8 is a plan view of the color filter substrate according to the second embodiment.
  • FIG. 9 is a cross-sectional view of a color filter substrate and a liquid crystal display panel including the same along the line IX-IX in FIG.
  • FIG. 10 is a plan view of a color filter substrate according to the third embodiment.
  • FIG. 11 is a graph showing the relationship between the thickness of the colored layer and the distribution ratio in the comparative example.
  • FIG. 12 is a graph showing the cross-sectional shape of the colored layer in the comparative example.
  • Embodiment 1 of the Invention 1 to 7 show Embodiment 1 of a color filter substrate and a display panel according to the present invention.
  • FIG. 1 is a plan view of the color filter substrate 20a of the present embodiment.
  • 2 is a cross-sectional view of the color filter substrate 20a and the liquid crystal display panel 50a including the color filter substrate 20a along the line II-II in FIG.
  • the liquid crystal display panel 50a includes a color filter substrate 20a and an active matrix substrate 30 provided as a pair of substrates facing each other, and a display medium layer between the color filter substrate 20a and the active matrix substrate 30.
  • the provided liquid crystal layer 40, the color filter substrate 20a and the active matrix substrate 30 are bonded to each other, and a seal provided in a frame shape to enclose the liquid crystal layer 40 between the color filter substrate 20a and the active matrix substrate 30 Material (not shown).
  • the color filter substrate 20a includes a transparent substrate 10, a black matrix 11a provided in a lattice shape on the transparent substrate 10, and a lattice between the black matrix 11a, that is, each of which will be described later.
  • a common electrode provided so as to cover the red layer 12r, the green layer 12g, and the blue layer 12b provided as a plurality of colored layers in the opening 11h, and the black matrix 11a, the red layer 12r, the green layer 12g, and the blue layer 12b, respectively.
  • 13 and a photo spacer 14 provided in a column shape on the common electrode 13 so as to overlap the black matrix 11a.
  • the red layer 12r, the green layer 12g, and the blue layer 12b are provided by applying the red ink 12ri, the green ink 12gi, and the blue ink 12bi (see FIG. 3) by an inkjet method, respectively.
  • the cross-sectional shapes of the red layer 12r, the green layer 12g, and the blue layer 12b are bowl-shaped as shown in FIG.
  • the surface of the black matrix 11a is subjected to fluorine plasma treatment and has liquid repellency with respect to the red ink 12ri, the green ink 12gi, and the blue ink 12bi. Further, the surface of the transparent substrate 10 exposed from the black matrix 11a is subjected to oxygen plasma treatment and has lyophilicity with respect to the red ink 12ri, the green ink 12gi, and the blue ink 12bi.
  • a plurality of openings 11h are provided in a matrix corresponding to each sub-pixel.
  • the black matrix 11a has a height of about 2.2 ⁇ m to 2.5 ⁇ m, for example, and is provided so as to reduce the influence of the liquid repellency on the red ink 12ri, the green ink 12gi, and the blue ink 12bi. Yes.
  • the active matrix substrate 30 includes a transparent substrate (not shown), a plurality of gate lines (not shown) provided on the transparent substrate so as to extend in parallel with each other, and extends in parallel with each other in a direction perpendicular to the gate lines.
  • a plurality of source lines (not shown) provided, a plurality of TFTs (not shown) provided for each gate line and each intersection of the source lines, that is, for each subpixel, and so as to cover each TFT.
  • a plurality of pixel electrodes (not shown) provided in a matrix on the interlayer insulating film and connected to each TFT.
  • the liquid crystal layer 40 is made of a nematic liquid crystal material having electro-optical characteristics, and the thickness thereof is set by the photo spacer 14.
  • the liquid crystal display panel 50a having the above-described configuration is predetermined for each sub-pixel in a liquid crystal layer 40 provided via an alignment film between each pixel electrode on the active matrix substrate 30 and the common electrode 13 on the color filter substrate 20a.
  • the transmittance of light transmitted through the panel is adjusted for each sub-pixel to display an image.
  • the manufacturing method of the color filter substrate 20a of the present embodiment includes a black matrix forming process, a plasma processing process, an ink jet process, a common electrode forming process, and a photo spacer forming process.
  • FIG. 3 is a cross-sectional view showing a part of the manufacturing process (ink jet process) of the color filter substrate 20a.
  • the transferred film is exposed and developed to form a lattice of the black matrix 11a.
  • Black matrix forming step the method of forming the black matrix 11a using the dry film laminating method is exemplified, but the black matrix 11a may be formed using a spin coating method or a slit coating method.
  • the surface of the black matrix 11a is made liquid repellent and the surface of the transparent substrate 10 exposed from the black matrix 11a. Is made lyophilic (plasma treatment step).
  • the drying process for example, about 80 ° C.
  • the baking are performed.
  • the treatment for example, about 240 ° C.
  • the red layer 12r, the green layer 12g, and the blue layer 12b are formed (inkjet process).
  • a transparent conductive film such as an ITO (Indium Tin Oxide) film is used to cover the black matrix 11a, the red layer 12r, the green layer 12g, and the blue layer 12b by using a mask with a thickness of about 140 nm.
  • ITO Indium Tin Oxide
  • the photo spacer 14 has a thickness of about 3 ⁇ m. Form (photo spacer formation process).
  • the color filter substrate 20a of the present embodiment can be manufactured.
  • FIG. 4, FIG. 6, and FIG. 11 are graphs showing the relationship between the thickness of the colored layer and the distribution ratio in Example 1, Example 2, and Comparative Example of the present embodiment, respectively.
  • FIG. 7 and FIG. 12 are graphs showing the cross-sectional shapes of the colored layers in Example 1, Example 2 and Comparative Example of this embodiment, respectively. 4 to 7, 11, and 12, (a), (b), and (c) show the results of the red layer, the green layer, and the blue layer, respectively.
  • 4, 6, and 11 correspond to histograms in which the width of the section is 0.03 ⁇ m.
  • FIGS. 5, 7 and 12 respectively show the heights of the colored layers in the vertical direction with the upper surface of the black matrix as a reference (0 ⁇ m).
  • Example 1 In the same manner as the manufacturing method described above, specifically, using Transer K43 manufactured by Fuji Film Co., Ltd., the height is 2.43 ⁇ m, the width is 0.018 mm, and the size of the opening is 0.47 mm in length ⁇ 0 in width. After forming a black matrix of 15 mm, the red layer, green layer and blue layer were respectively formed using EBU-R34A2 red ink, EBU-G28H3 green ink and EBU-B26I3 blue ink manufactured by DNP Fine Chemical Co., Ltd.
  • Example 2 In the same manner as in Example 1, a black matrix having a height of 2.20 ⁇ m, a width of 0.031 mm, and an opening size of 0.46 mm in length and 0.15 mm in width is formed using Transer KU4 manufactured by FUJIFILM Corporation. After that, a red layer, a green layer, and a blue layer are formed using a red ink of EBU-R30A1 manufactured by DNP Fine Chemical Co., Ltd., a green ink of EBU-G28A2, and a blue ink of EBU-B26H1, respectively. Each film thickness of the layer and the blue layer and each chromaticity (x, y) with a CCFL (Cold Cathode Fluorescent Lamp) light source were measured (see FIGS. 6 and 7 and the left column of Table 2 below).
  • CCFL Cold Cathode Fluorescent Lamp
  • a black matrix having a height of 2.00 ⁇ m, a width of 0.018 mm, and an opening size of 0.47 mm ⁇ width 0.15 mm was formed using Transer K43 manufactured by FUJIFILM Corporation.
  • a red layer, a green layer, and a blue layer are formed using a red ink of EBU-R34A2 manufactured by DNP Fine Chemical Co., Ltd., a green ink of EBU-G28H3, and a blue ink of EBU-B26I3, respectively.
  • Each film thickness of the layer and the blue layer and each chromaticity (x, y) with an LED light source or a CCFL light source were measured (see FIGS. 11 and 12, the right column of Table 1 and the right column of Table 2).
  • the minimum thickness of the red layer is about 0.55 ⁇ m (Comparative Example 1) to 0.70 ⁇ m.
  • the minimum thickness of the green layer is about 1.00 ⁇ m (Comparative Example 1) to about 1.40 ⁇ m (Example 1) and about 0.95 ⁇ m (Example 2).
  • the minimum film thickness of the blue layer is about 1.00 ⁇ m (Comparative Example 1) to about 1.40 ⁇ m (Example 1) and about 1.15 ⁇ m (Example 2), and the minimum film thickness of each colored layer is raised. The tendency to be confirmed was confirmed.
  • the height difference of the red layer is about 1.80 ⁇ m (Comparative Example 1) to about 1.80 ⁇ m. (Example 1) and about 1.40 ⁇ m (Example 2)
  • the height difference of the green layer is about 1.05 ⁇ m (Comparative Example 1) to about 0.40 ⁇ m (Example 1) and about 1.00 ⁇ m (implementation).
  • Example 2 the height difference of the blue layer is about 1.30 ⁇ m (Comparative Example 1) to about 0.90 ⁇ m (Example 1) and about 1.05 ⁇ m (Example 2). The tendency to become smaller was confirmed.
  • Example 2 using a CCFL light source as shown in Table 2, although the change of chromaticity was not confirmed so much with respect to the comparative example, in Example 1 using an LED light source, it is shown in Table 1. As described above, the x value increased in the red layer (R), and a change in the direction of deeper chromaticity was confirmed with respect to the comparative example.
  • the red ink to which the surface of the black matrix 11a is applied by the inkjet method. 12ri, the green ink 12gi, and the blue ink 12bi are lyophobic, and the surface of the transparent substrate 10 exposed from the black matrix 11a through the openings 11h is a lyophilic solution for the red ink 12ri, the green ink 12gi, and the blue ink 12bi.
  • the thickness of the red ink 12ri, the green ink 12gi, and the blue ink 12bi that are separated from the black matrix 11a is relatively large at the center, and the red ink 12ri and the green ink 12g that are in contact with the black matrix 11a.
  • the film thickness is relatively small at the edge of the blue ink 12bi, the film thickness is relatively large at the center of the red layer 12r, the green layer 12g, and the blue layer 12b separated from the black matrix 11a.
  • the black matrix 11a has liquid repellency depending on the height of the red ink 12ri and the green ink. Since it is provided so as to alleviate the influence on 12gi and blue ink 12bi, the amount of red ink 12ri, green ink 12gi and blue ink 12bi in contact with the black matrix 11a increases.
  • the film thicknesses at the edge portions of the red ink 12ri, the green ink 12gi, and the blue ink 12bi that become the red layer 12r, the green layer 12g, and the blue layer 12b are increased.
  • the minimum film thickness of the red layer 12r, the green layer 12g, and the blue layer 12b can be increased as much as possible, and the predetermined chromaticity can be easily expressed in the red layer 12r, the green layer 12g, and the blue layer 12b. Can do.
  • Embodiment 2 of the Invention 8 and 9 show Embodiment 1 of the color filter substrate and the display panel according to the present invention.
  • FIG. 8 is a plan view of the color filter substrate 20b of the present embodiment.
  • FIG. 9 is a cross-sectional view of the color filter substrate 20b and the liquid crystal display panel 50b including the same along the line IX-IX in FIG.
  • the same parts as those in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description thereof will be omitted.
  • the liquid crystal display panel 50a including the three color filter substrates 20a of R (red), G (green), and B (blue) is illustrated.
  • Y yellow
  • the liquid crystal display panel 50b provided with the added four color filter substrate 20b is illustrated.
  • the liquid crystal display panel 50b includes a color filter substrate 20b and an active matrix substrate 30 provided as a pair of substrates facing each other, and a display medium layer between the color filter substrate 20b and the active matrix substrate 30.
  • the provided liquid crystal layer 40, the color filter substrate 20b and the active matrix substrate 30 are bonded to each other, and a seal provided in a frame shape to enclose the liquid crystal layer 40 between the color filter substrate 20b and the active matrix substrate 30 Material (not shown).
  • the color filter substrate 20b includes a transparent substrate 10, a black matrix 11b provided in a lattice shape on the transparent substrate 10, and a lattice between the black matrix 11b, that is, each of which will be described later.
  • a red layer 12r, a green layer 12g, a blue layer 12b and a yellow layer 12y provided as a plurality of colored layers in the opening 11h, and a black matrix 11b, a red layer 12r, a green layer 12g, a blue layer 12b and a yellow layer 12y, respectively.
  • a common electrode 13 provided so as to be covered, and a photo spacer 14 provided in a column shape on the common electrode 13 so as to overlap the black matrix 11b are provided.
  • the yellow layer 12y is provided by applying yellow ink by an ink jet method, and its cross-sectional shape is a bowl shape as shown in FIG.
  • the surface of the black matrix 11b is subjected to fluorine plasma treatment and has liquid repellency with respect to the red ink 12ri, the green ink 12gi, the blue ink 12bi (see FIG. 3), and the yellow ink. Further, the surface of the transparent substrate 10 exposed from the black matrix 11b is subjected to oxygen plasma treatment and has lyophilicity with respect to the red ink 12ri, the green ink 12gi, the blue ink 12bi, and the yellow ink.
  • a plurality of openings 11h are provided in a matrix corresponding to each sub-pixel.
  • the black matrix 11b has a height of about 2.2 ⁇ m to 2.5 ⁇ m, for example, so as to reduce the influence of the liquid repellency on the red ink 12ri, the green ink 12gi, the blue ink 12bi, and the yellow ink. Is provided.
  • the liquid crystal display panel 50b having the above-described configuration is predetermined for each sub-pixel in a liquid crystal layer 40 provided via an alignment film between each pixel electrode on the active matrix substrate 30 and the common electrode 13 on the color filter substrate 20b.
  • the transmittance of light transmitted through the panel is adjusted for each sub-pixel, and an image is displayed.
  • the color filter substrate 20b of the present embodiment is manufactured by simultaneously forming the yellow layer 12y when forming the red layer 12r, the green layer 12g, and the blue layer 12b in the manufacturing method described in the first embodiment. be able to.
  • the influence of the liquid repellency on the ink is reduced by the height of the black matrix 11b as in the first embodiment. Therefore, the minimum film thickness of the red layer 12r, the green layer 12g, the blue layer 12b, and the yellow layer 12y can be increased as much as possible by increasing the amount of ink that contacts the black matrix 11b. In the red layer 12r, the green layer 12g, the blue layer 12b, and the yellow layer 12y, predetermined chromaticity can be easily developed.
  • FIG. 10 is a plan view of the color filter substrate 20c of the present embodiment.
  • the color filter substrates 20a and 20b having the stripe arrangement are illustrated, but in this embodiment, the color filter substrate 20c having the delta arrangement is illustrated.
  • the color filter substrate 20c includes a transparent substrate (10, see FIG. 2), a black matrix 11c provided on the transparent substrate 10, and a plurality of openings 11h described later of the black matrix 11c.
  • the red layer 12r, the green layer 12g, and the blue layer 12b provided as the coloring layers, and the common electrode (13, FIG. 2) provided to cover the black matrix 11c, the red layer 12r, the green layer 12g, and the blue layer 12b, respectively.
  • a photo spacer (14, see FIG. 2) provided in a column shape on the common electrode 13 so as to overlap the black matrix 11c.
  • the surface of the black matrix 11c is subjected to a fluorine plasma treatment and has liquid repellency with respect to the red ink 12ri, the green ink 12gi, and the blue ink 12bi (see FIG. 3). Further, the surface of the transparent substrate 10 exposed from the black matrix 11c is subjected to oxygen plasma treatment and has lyophilicity with respect to the red ink 12ri, the green ink 12gi, and the blue ink 12bi.
  • the black matrix 11c is provided with a plurality of openings 11h arranged in a delta arrangement corresponding to each sub-pixel.
  • the black matrix 11c has a height of about 2.2 ⁇ m to 2.5 ⁇ m, for example, and is provided so as to reduce the influence of the liquid repellency on the red ink 12ri, the green ink 12gi, and the blue ink 12bi. Yes.
  • the color filter substrate 20c having the above configuration constitutes a liquid crystal display panel together with an active matrix substrate arranged opposite to each other and a liquid crystal layer sealed between the two substrates.
  • the color filter substrate 20c of this embodiment can be manufactured by changing the planar shape of the black matrix 11a to the planar shape of the black matrix 11c in the manufacturing method described in the first embodiment.
  • the black matrix 11c is provided so as to reduce the influence of the liquid repellency on the ink due to its height. Therefore, by increasing the amount of ink in contact with the black matrix 11c, the minimum thicknesses of the red layer 12r, the green layer 12g, and the blue layer 12b can be increased as much as possible, and the red layer 12r and the green layer 12g. In the blue layer 12b, a predetermined chromaticity can be easily developed.
  • the counter substrate is exemplified as the color filter substrate provided with each colored layer and the black matrix.
  • the present invention is a color filter in which each colored layer and the black matrix are provided on the active matrix substrate side.
  • the present invention can also be applied to an active matrix substrate having an on-array structure.
  • a color filter substrate having a stripe arrangement or a delta arrangement has been exemplified.
  • the present invention can also be applied to a color filter substrate having another arrangement such as a mosaic arrangement or a quad (square) arrangement. .
  • the color filter substrate of three colors of RGB or four colors of RGBY is exemplified.
  • the present invention provides four colors of C (cyan), M (magenta), Y (yellow), and other combinations.
  • the present invention can also be applied to color filter substrates of colors or more.
  • a liquid crystal display panel is exemplified as the display panel.
  • the present invention can also be applied to other display panels such as an organic EL (Electro Luminescence) panel.
  • the present invention can increase the minimum film thickness of the material layer formed by applying ink into the partition wall, so that not only the color filter substrate manufactured using the inkjet method, It is useful also about the organic EL element manufactured using the inkjet method.
  • Transparent substrates 11a to 11c Black matrix 11h Opening 12ri Red ink 12gi Green ink 12bi Blue ink 12r Red layer (colored layer) 12g Green layer (colored layer) 12b Blue layer (colored layer) 12y yellow layer (colored layer) 13

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  • Liquid Crystal (AREA)

Abstract

L'invention porte sur un substrat de filtre de couleur (20a), lequel substrat comprend : un substrat transparent (10) ; une matrice noire (11a) disposée sur le substrat transparent (10) et comportant une pluralité d'ouvertures (11h) ; et une pluralité de couches colorées (12r, 12b, 12v) dont chacune est disposée sur chaque ouverture (11h) de la matrice noire (11a) par de l'encre appliquée par un procédé à jet d'encre. La surface de la matrice noire (11a) est lyophobe vis-à-vis de l'encre, et la surface du substrat transparent (10) exposée à partir de la matrice noire (11a) est lyophile vis-à-vis de l'encre. La matrice noire (11a) est réalisée de sorte que l'impact de la propriété lyophobe vis-à-vis de l'encre puisse être réduit.
PCT/JP2011/006291 2010-11-15 2011-11-10 Substrat de filtre de couleur et panneau d'affichage WO2012066754A1 (fr)

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JP2010254549 2010-11-15
JP2010-254549 2010-11-15

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WO2012066754A1 true WO2012066754A1 (fr) 2012-05-24

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999048339A1 (fr) * 1998-03-17 1999-09-23 Seiko Epson Corporation Substrat de formation de motifs sur film mince et son traitement de surface
JP2006084852A (ja) * 2004-09-16 2006-03-30 Sharp Corp カラーフィルタ、カラーフィルタを備えた液晶表示装置およびカラーフィルタの製造方法
JP2007122042A (ja) * 2005-09-30 2007-05-17 Dainippon Printing Co Ltd カラーフィルター用インクジェットインク、カラーフィルター、カラーフィルターの製造方法、及び液晶表示装置
JP2008165092A (ja) * 2006-12-29 2008-07-17 Toray Ind Inc カラーフィルタおよびその製造方法
JP2008242004A (ja) * 2007-03-27 2008-10-09 Toppan Printing Co Ltd インキジェット法カラーフィルタの製造方法およびインキジェット法カラーフィルタ
JP2010185938A (ja) * 2009-02-10 2010-08-26 Asahi Glass Co Ltd 光学素子の製造方法
JP2010244006A (ja) * 2009-03-18 2010-10-28 Toppan Printing Co Ltd インキジェット法カラーフィルタの製造方法、およびインキジェット法カラーフィルタ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999048339A1 (fr) * 1998-03-17 1999-09-23 Seiko Epson Corporation Substrat de formation de motifs sur film mince et son traitement de surface
JP2006084852A (ja) * 2004-09-16 2006-03-30 Sharp Corp カラーフィルタ、カラーフィルタを備えた液晶表示装置およびカラーフィルタの製造方法
JP2007122042A (ja) * 2005-09-30 2007-05-17 Dainippon Printing Co Ltd カラーフィルター用インクジェットインク、カラーフィルター、カラーフィルターの製造方法、及び液晶表示装置
JP2008165092A (ja) * 2006-12-29 2008-07-17 Toray Ind Inc カラーフィルタおよびその製造方法
JP2008242004A (ja) * 2007-03-27 2008-10-09 Toppan Printing Co Ltd インキジェット法カラーフィルタの製造方法およびインキジェット法カラーフィルタ
JP2010185938A (ja) * 2009-02-10 2010-08-26 Asahi Glass Co Ltd 光学素子の製造方法
JP2010244006A (ja) * 2009-03-18 2010-10-28 Toppan Printing Co Ltd インキジェット法カラーフィルタの製造方法、およびインキジェット法カラーフィルタ

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