WO2015090029A1 - 彩色滤光片及其制作方法、显示装置 - Google Patents

彩色滤光片及其制作方法、显示装置 Download PDF

Info

Publication number
WO2015090029A1
WO2015090029A1 PCT/CN2014/081135 CN2014081135W WO2015090029A1 WO 2015090029 A1 WO2015090029 A1 WO 2015090029A1 CN 2014081135 W CN2014081135 W CN 2014081135W WO 2015090029 A1 WO2015090029 A1 WO 2015090029A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter layer
color filter
pixel unit
color
pixel
Prior art date
Application number
PCT/CN2014/081135
Other languages
English (en)
French (fr)
Inventor
陈长堤
陆相晚
骆意勇
杨涛
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 合肥京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/430,024 priority Critical patent/US20160018575A1/en
Publication of WO2015090029A1 publication Critical patent/WO2015090029A1/zh

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/20Filters
    • G02B5/201Filters in the form of arrays
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133514Colour filters
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/35Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/351Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/38Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/52RGB geometrical arrangements

Definitions

  • Color filter manufacturing method thereof, and display device
  • Embodiments of the present invention relate to the field of display technologies, and in particular, to a color filter, a method of fabricating the same, and a display device. Background technique
  • the display device is an output device of a color image, and its ability to reproduce color - the color gamut is its main performance indicator.
  • the pursuit of high color gamut display devices is the goal pursued by every manufacturer.
  • the color gamut is the range of color representation.
  • the color gamut of a color display device is the area of the primary color triangle formed by the three primary colors in the chromaticity diagram.
  • the color gamut of the existing display device is mainly determined by a color filter. As shown in FIG. 1, one pixel region 100 of the existing color filter includes pixel regions R, G, and B corresponding to three primary colors (red, green, and blue). Each pixel area corresponds to a color filter layer of one color.
  • the color gamut of the display device is mainly determined by the area of the triangle formed by the coordinates of the red, green and blue primary colors, and the color gamut is small.
  • the prior art improves the color gamut of the display device in the following manner:
  • One embodiment is: ⁇ using a quantum dot material to fabricate a color filter, but the quantum dot material has a higher cost than a commonly used photoresist material, which is disadvantageous for achieving A low-cost high-performance display device;
  • Another embodiment is:
  • the backlight uses three backlight diodes (LEDs) of red, green, and blue, but this design method increases the cost of the backlight, which is also disadvantageous for achieving low Cost high performance display device. Summary of the invention
  • the embodiment of the present invention provides a color filter, a manufacturing method thereof, and a display device.
  • the color filter provided by the embodiment of the present invention can realize a display device with a large color gamut.
  • Embodiments of the present invention provide a color filter, each pixel region of the color filter includes at least four pixel units, each pixel unit includes a color filter layer, and the at least four pixel units include a first a pixel unit, a second pixel unit, a third pixel unit, and a fourth pixel unit, the first image a first color filter layer is formed in the element unit, a second color filter layer is formed in the second pixel unit, a third color filter layer is formed in the third pixel unit, and a fourth color is formed in the fourth pixel unit.
  • the filter layer, the fourth color filter layer is formed by superposing any two materials of the first color filter layer, the second color filter layer and the third color filter layer.
  • the thickness of the two materials in the fourth color filter layer can be the same. In at least one embodiment, the thickness of the fourth color filter layer may be the same as the thickness of at least one of the first color filter layer, the second color filter layer, and the third color filter layer.
  • the fourth color filter layer may be a cyan filter layer
  • the first color filter layer may be a red filter layer
  • the second color filter layer may be a green filter layer
  • the third color filter The light layer may be a blue filter layer
  • the cyan filter layer may be formed by superposing a green filter layer material and a blue filter layer material.
  • the fourth color filter layer may be a yellow filter layer
  • the first color filter layer may be a red filter layer
  • the second color filter layer may be a green filter layer
  • the third color filter Light is superimposed.
  • the fourth color filter layer may be a magenta filter layer
  • the first color filter layer may be a red filter layer
  • the second color filter layer may be a green filter layer
  • the filter layer may be a blue filter layer
  • the magenta filter layer may be formed by superposing a red filter layer material and a blue filter layer material.
  • Embodiments of the present invention also provide a display device including any of the above color filters.
  • An embodiment of the present invention further provides a method for fabricating a color filter, each pixel region of the color filter includes at least four pixel units, each of which includes a color filter layer, the at least four pixels
  • the unit includes a first pixel unit, a second pixel unit, a third pixel unit, and a fourth pixel unit
  • the manufacturing method may include: fabricating the first pixel unit, the second pixel unit, the third pixel unit, and the fourth pixel unit respectively a first color filter layer, a second color filter layer, a third color filter layer, and a fourth color filter layer, wherein the fourth color filter layer is formed by the first color filter layer and the second color filter layer A film layer formed by any two of the layers and the third color filter layer is superposed.
  • the fourth color filter layer may be superposed by a film layer of the same thickness formed by any two of the first color filter layer, the second color filter layer, and the third color filter layer. to make.
  • the thickness of the fourth color filter layer may be the same as the thickness of at least one of the first color filter layer, the second color filter layer, and the third color filter layer.
  • forming the first color filter layer, the second color filter layer, the third color filter layer, and the fourth color filter layer may include: forming a red filter in a region corresponding to the first pixel unit Forming a green filter layer in a region corresponding to the second pixel unit and the fourth pixel unit; forming a blue filter layer in a region corresponding to the third pixel unit and the fourth pixel unit, such that a region corresponding to the fourth pixel unit is The green filter layer and the blue filter layer are superposed.
  • forming the first color filter layer, the second color filter layer, the third color filter layer, and the fourth color filter layer may include: corresponding to the first pixel unit and the fourth pixel unit Forming a red filter layer in the region; forming a green filter layer in a region corresponding to the second pixel unit and the fourth pixel unit, such that a region corresponding to the fourth pixel unit is formed by superposing a green filter layer and a red filter layer; The area corresponding to the three pixel unit forms a blue filter layer.
  • forming the first color filter layer, the second color filter layer, the third color filter layer, and the fourth color filter layer may include: corresponding to the first pixel unit and the fourth pixel unit Forming a red filter layer in the region; forming a green filter layer in a region corresponding to the second pixel unit; forming a blue filter layer in a region corresponding to the third pixel unit and the fourth pixel unit, such that the region corresponding to the fourth pixel unit is The blue filter layer and the red filter layer are superposed.
  • the first to third color filter layers may be formed by a full-tone area of the mask, and the fourth color filter layer may be formed by a halftone area of the mask.
  • an embodiment of the present invention provides a color filter including at least four pixel units per pixel area, each pixel unit includes a color filter layer, and the four pixel units are respectively a first pixel.
  • a first color filter layer is formed in the first pixel unit, and a second color filter layer is formed in the first pixel unit, and the third pixel unit is formed in the third pixel unit Forming a third color filter layer, a fourth color filter layer is formed in the fourth pixel unit, and the fourth color filter layer is formed by the first color filter layer, the second color filter layer, and the third color filter layer Any two of the materials are superposed.
  • the embodiment of the present invention can effectively improve the color gamut of the display device as compared with the conventional pixel region composed of three primary color pixels.
  • 1 is a schematic structural view of a color filter layer of one pixel region of a conventional color filter
  • 2 is a schematic structural diagram of a pixel area according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a color filter layer disposed in a pixel region provided in FIG. 2;
  • FIG. 4 is a schematic structural view of a color filter layer disposed in a pixel region according to another embodiment of the present invention
  • FIG. 5 is a schematic structural view of a color filter layer disposed in a pixel region according to another embodiment of the present invention
  • a schematic structural view of a color filter substrate of an intermediate process step in the manufacturing method of the embodiment
  • Figure 7 is a schematic view showing the structure of a color filter substrate in an intermediate process step in a fabrication method according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a color filter, a manufacturing method thereof, and a display device.
  • the color filter provided by the embodiment of the present invention can realize a display device with a large color gamut.
  • each pixel unit is provided with a color filter layer of one color, which is effectively improved compared with the existing color filter composed of the three primary color pixel units.
  • the color gamut of the display device by providing pixel units including at least four colors, each pixel unit is provided with a color filter layer of one color, which is effectively improved compared with the existing color filter composed of the three primary color pixel units.
  • a pixel in which the color obtained by filtering the white light is red is defined as a red pixel unit
  • a pixel in which the color obtained by filtering is green is defined as a green pixel unit
  • a pixel in which the color obtained by filtering is blue is defined as a blue pixel.
  • the pixel unit defines a pixel with a cyan color as a cyan pixel unit, and a pixel with a yellow color obtained by filtering as a yellow pixel unit, and defines a magenta color obtained by filtering as a magenta pixel. Pixel unit. And display device.
  • a color filter provided by an embodiment of the present invention may include at least four pixel units 111 on a substrate substrate 1, each of which includes a color filter layer 112.
  • the four pixel units are respectively a first pixel unit, a second pixel unit, a third pixel unit, and a fourth pixel unit.
  • the first pixel unit is formed with a first color filter layer
  • the second pixel unit is formed with a second color.
  • a third color filter layer is formed in the third pixel unit
  • a fourth color filter layer is formed in the fourth pixel unit, wherein the fourth color filter layer is formed by the first color filter layer and the second color filter layer. Any two materials of the color filter layer and the third color filter layer are stacked.
  • FIG. 2 shows only four pixel units 111 on the base substrate 1.
  • each of the pixel regions may include four pixel units on the substrate substrate 1.
  • 111 wherein the first pixel unit is a red pixel unit (R), the second pixel unit is a green pixel unit (G), the third pixel unit is a blue pixel unit (B), and the fourth pixel unit is a magenta pixel unit ( Y).
  • the fourth pixel unit may not be limited to a magenta pixel unit ( ⁇ ), and may alternatively be a yellow pixel unit or a cyan pixel unit or the like.
  • FIG. 3 only shows the color filter layer located in each pixel unit. Specifically, FIG. 3 shows: a red filter layer located in the red pixel unit (R), a green filter layer located in the green pixel unit (G), and a blue filter located in the blue pixel unit ( ⁇ ) a light layer, and a film layer formed by superposing a red filter layer material and a blue filter layer material in the magenta pixel unit ( ⁇ ).
  • each pixel region may be provided with a color filter layer of at least four colors, and the color gamut of the formed display device may be determined by at least an area composed of four color chromaticity coordinates. Since the area composed of the four color chromaticity coordinates is larger than the area of the triangle composed of the red, green and blue primary color chromaticity coordinates, the color gamut of the display device can be improved.
  • each of the pixel regions may include a color filter layer of four colors, a color filter layer of five colors, a color filter layer of six colors, or more.
  • Color filter layer of color It is emphasized again that the color filter layer of the four colors of the above or below, the color filter layer of five colors or the color filter layer of six colors means that the color obtained by filtering the white light is four colors. , five or six color filter layers, each color corresponding to a color filter layer.
  • the thickness of the two materials in the fourth color filter layer may be the same.
  • the thickness of the fourth color filter layer may be the same as the thickness of at least one of the first color filter layer, the second color filter layer, and the third color filter layer.
  • the first color filter layer of the color filter layers of the four colors may be a red filter layer (R), and the second color filter layer may be a green filter layer (G), the third color The filter layer may be a blue filter layer ( ⁇ ), and the fourth color filter layer may be a cyan filter layer (C).
  • R red filter layer
  • G green filter layer
  • blue filter layer
  • C cyan filter layer
  • the fourth color filter layer may not be limited to the cyan filter layer (C).
  • the fourth color filter layer may be a magenta filter layer (M) or a yellow filter layer (Y).
  • the first color filter layer, the second color filter layer, and the third color filter layer are respectively a red filter layer (R), a green filter layer (G), and a blue filter layer (B), red A color filter layer formed by superposing any two materials of the filter layer (R), the green filter layer (G), and the blue filter layer (B).
  • red A color filter layer formed by superposing any two materials of the filter layer (R), the green filter layer (G), and the blue filter layer (B).
  • the thickness of the two materials is the same, it is closer to the cyan filter.
  • the color that is filtered also belongs to the primary color, and the color image achieved is better.
  • the thickness of the fourth color filter layer is the same as the thickness of at least one of the first color filter layer, the second color filter layer, and the third color filter layer, the effect of displaying the color image and the transmittance of the light are displayed. More consistent, further improving the quality of the image.
  • Each of the pixel regions 11 shown in FIG. 3 may include a red filter layer (R), a green filter layer (G), a blue filter layer (B), and a yellow filter layer (Y), and a red filter layer (R), the green filter layer (G), the blue filter layer (B), and the yellow filter layer (Y) may not be limited to those shown in FIG. Figure 3 is only intended to illustrate an embodiment of the invention and is not intended to limit the invention.
  • the red filter layer, the green filter layer and the blue filter layer can be respectively formed by a red photoresist material, a green photoresist material and a blue photoresist material. These three photoresist materials are also commonly used photoresist materials, and the cost is low. Lower, the implementation process is easier.
  • the cyan filter layer (C), the yellow filter layer (Y), and the magenta filter layer (M) are formed in at least two ways.
  • the cyan filter layer (C) is formed of a blue photoresist material and a green photoresist material
  • the yellow filter layer (Y) is formed of a red photoresist material and a green photoresist material
  • the magenta filter layer (M) is formed of a red photoresist material and a blue photoresist material.
  • a cyan filter layer (C) is formed of a cyan photoresist material
  • a yellow filter layer (Y) is formed of a yellow photoresist material
  • a magenta filter layer (M) is formed of a magenta photoresist material .
  • the fourth color filter layer may be a cyan filter layer
  • the first color filter layer may be a red filter layer
  • the second color filter layer may be a green filter layer
  • the third color filter layer may be As a blue filter layer
  • the cyan filter layer may be formed by superposing a green filter layer material and a blue filter layer material.
  • the fourth color filter layer may be a yellow filter layer
  • the first color filter layer may be a red filter layer
  • the second color filter layer may be a green filter layer
  • the third color filter layer may be blue.
  • the color filter layer, the yellow filter layer may be formed by superposing a red filter layer material and a green filter layer material.
  • the fourth color filter layer may be a magenta filter layer
  • the first color filter layer may be a red filter layer
  • the second color filter layer may be a green filter layer
  • the third color filter layer may be The blue filter layer
  • the magenta filter layer may be formed by superposing a red filter layer material and a blue filter layer material.
  • each color filter layer is formed by a common red photoresist material, a green photoresist material, and a blue photoresist material, and the color gamut of the display device is improved, and the color filter is not added.
  • the cost of the light film is not added.
  • B+G represents a cyan filter formed by a combination of a blue photoresist material and a green photoresist material.
  • R+G represents a yellow filter layer (Y) formed by a combination of a red photoresist material and a green photoresist material;
  • R+B represents a combination of a red photoresist material and a blue photoresist material.
  • each of the pixel regions may include a color filter layer 112 of six colors.
  • each pixel region may include a red filter film (R), a green filter film (G), a blue filter film (B), a cyan filter film (C), and a yellow filter.
  • R red filter film
  • G green filter film
  • B blue filter film
  • C cyan filter film
  • M magenta filter
  • red filter film (R), green filter film (G), blue filter film (B), cyan filter film (C), yellow filter film (Y) and magenta filter film (M) The position may not be limited to that shown in the drawings.
  • the pixel regions corresponding to the color filter layers of the above four colors or the six colors may be illuminated by a backlight that emits white light, and the white light is filtered to realize the light-emitting display of the corresponding color.
  • a white-emitting backlight is more mature and less expensive than a red, green or blue-based backlight.
  • the image has higher display quality
  • cyan (C), yellow (Y), or magenta ( M) A pixel region composed of a color filter layer, when white light illuminates the pixel region, the white light is divided into four colors or six colors of light, and the color gamut of the display device is higher than the pixels composed of the three primary colors.
  • the cost of the 1, G and B photoresists and the cyan (C), yellow (Y) and magenta (M) photoresists constituting the color filter layer are more expensive than the color filters made of the existing quantum materials. Low, it is more advantageous to realize a low-cost and high-performance color filter and a display device including the color filter.
  • Embodiments of the present invention also provide a display device including the above color filter.
  • the display device may be a liquid crystal display panel, an organic light emitting display panel, a display, or the like.
  • the color filter may be disposed on the color film substrate or the array substrate of the display device.
  • the display device may further include a black matrix, and the black matrix may be located in a non-display area between adjacent color filter layers.
  • each color filter layer in the color filter may be located in a region surrounded by the black matrix, and the black matrix may be located between the color filter layers.
  • the method for manufacturing the color filter may generally include the following steps: Forming a first color filter layer, a second color filter layer, a third color filter layer, and a fourth color filter layer respectively located in the first pixel unit, the second pixel unit, the third pixel unit, and the fourth pixel unit.
  • the process of the fourth color filter layer may be formed by superposing a film layer formed of any two materials of the first color filter layer, the second color filter layer and the third color filter layer.
  • the fourth color filter layer may be formed by stacking film layers of the same thickness formed by any two of the first color filter layer, the second color filter layer and the third color filter layer.
  • the thickness of the fourth color filter layer may be the same as the thickness of at least one of the first color filter layer, the second color filter layer, and the third color filter layer.
  • Forming the first color filter layer, the second color filter layer, the third color filter layer, and the fourth color filter layer may include:
  • a blue filter layer is formed in a region corresponding to the third pixel unit and the fourth pixel unit, such that a region corresponding to the fourth pixel unit is formed by stacking a green filter layer and a blue filter layer.
  • first color filter layer may include:
  • a blue filter layer is formed in a region corresponding to the third pixel unit.
  • first color filter layer may include:
  • a blue filter layer is formed in a region corresponding to the third pixel unit and the fourth pixel unit, such that a region corresponding to the fourth pixel unit is formed by superposing a blue filter layer and a red filter layer.
  • the red filter layer, the green filter layer, and the blue filter layer may be respectively formed of a red photoresist material, a green photoresist material, and a blue photoresist material, and the cyan filter layer (C) may be composed of a blue photoresist material and green light.
  • the resistive material is formed; the yellow filter layer (Y) may be formed of a red photoresist material and a green photoresist material; the magenta filter layer (M) may be formed of a red photoresist material and a blue photoresist material.
  • the film formed by the red photoresist material in the red pixel region and the yellow pixel region is the same Completed in one patterning process; the film formed by the red photoresist material of the red pixel region and the magenta pixel region is completed in the same patterning process;
  • a full-tone mask is used in the red pixel region
  • a halftone mask is used in the yellow pixel region and the magenta pixel region, so that the thickness of the photoresist layer corresponding to the full-tone mask is the photoresist layer corresponding to the halftone mask. Double the thickness;
  • a red photoresist layer covering the entire substrate is formed on the base substrate, and the red photoresist layer is exposed through the BGR mask.
  • the light rent of the color filter i.e., the color tree
  • the area irradiated with light remains, and the unirradiated area is removed by the etching liquid.
  • the mask should satisfy the following conditions:
  • the mask area corresponding to the red pixel area is a full-tone mask
  • the mask area corresponding to the yellow pixel area and the magenta pixel area is a halftone mask.
  • the transmittance of the full-tone mask light is 100%
  • the light transmittance of the halftone mask is 50%
  • the transmittance is twice as large
  • the thickness of the photoresist film formed in the corresponding region is twice as large.
  • the green photoresist layer in the green pixel region and the cyan pixel region is completed in the same patterning process, and the green photoresist layer in the green pixel region and the yellow pixel region is completed in the same patterning process, wherein, in the green pixel region Applying a full-tone mask, using a halftone mask in the cyan pixel region and the yellow pixel region, so that the thickness of the photoresist layer corresponding to the full-tone mask is twice the thickness of the photoresist layer corresponding to the halftone mask; Specifically, on the basis of forming the red photoresist layer, a green photoresist layer is formed in the green pixel region, the cyan pixel region, and the yellow pixel region; the formation process is similar to the above process of forming the red photoresist layer, and the mask layer at this time Satisfaction:
  • the mask area corresponding to the green pixel area is a full-tone mask
  • the mask area corresponding to the cyan pixel area and the yellow pixel area
  • the blue photoresist layer in the blue pixel region, the cyan pixel region, and the magenta pixel region is completed in the same patterning process, in which the full-tone mask is used in the blue pixel region, and the cyan pixel region and the magenta pixel region are used.
  • a halftone mask such that the thickness of the photoresist layer corresponding to the full-tone mask is twice the thickness of the photoresist layer corresponding to the halftone mask;
  • a blue photoresist layer is formed in the blue pixel region, the cyan pixel region, and the magenta pixel region;
  • the formation process is similar to the above process of forming a green photoresist layer, and the mask is satisfied at this time: the mask region corresponding to the blue pixel region is a full-tone mask, and the cyan pixel region and the magenta pixel region are The corresponding mask area is a halftone mask. At this time, the photoresist layers of the blue pixel region, the cyan pixel region, and the magenta pixel region have been completely formed.
  • the order of forming the color filter layers of the respective colors in the above three steps is not limited thereto.
  • the above embodiments are merely one of the embodiments, which are merely illustrative of the embodiments of the present invention and are not intended to limit the present invention.
  • the method for fabricating the color filter substrate may include: a process of fabricating a black matrix and a process of fabricating a color filter layer.
  • the order of fabrication of the black matrix and the color filter layer can be unlimited.
  • a black matrix 3 is first formed on the base substrate 1 by an exposure process; then, a color filter layer 11 of a different color is formed on the base substrate 1 on which the black matrix 3 is formed.
  • the cyan filter layer, the yellow filter layer and the magenta filter layer may be made of two kinds of photoresist materials, and any of the two kinds of photoresists may be red, green or blue photoresist.
  • full color (100% transmittance mask grid) and halftone (50% transmittance mask grid) are used for the pixels of each color.
  • the BGR three color photoresist layers are formed by an exposure process. Since the halftone mask has half the transmittance of the full-tone mask, the BGR film thickness is half that of the full-tone design. Thus, the film thicknesses of the three combinations (B+R), (B+G), and (R+G) formed can be the same as those of the BGR film in full color.
  • a film layer formed by double exposure on a halftone region on the reticle is shown in FIG. 7 as a green photoresist having a thickness h2 formed on a region of thickness h2, and the color filter layer formed by the region is yellow. Filter layer Y. The formation of other color filter layers is not - introduced.
  • the manufacturing process may further include: forming a planar layer (OC), a spacer (PS) on the color filter substrate by an exposure process to planarize the BGR color resist layer and maintaining the cell thickness.
  • OC planar layer
  • PS spacer
  • Embodiments of the present invention do not require additional cost, and when white light passes through a color filter layer composed of (B+R), (B+G), and (R+G), magenta M, cyan C, and yellow are respectively displayed. Y.
  • a color filter layer composed of (B+R), (B+G), and (R+G)
  • magenta M, cyan C, and yellow are respectively displayed.
  • Y This is equivalent to each pixel area being composed of six types of pixel units, thereby increasing the color gamut of the display device.
  • the embodiment of the present invention effectively improves the display device by providing a color filter layer including at least four colors in each pixel region, compared with the color filter layer corresponding to the existing three primary colors. Color gamut.
  • the spirit and scope of the invention are not departed.
  • the present invention cover the modifications and modifications of the embodiments of the invention.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Filters (AREA)

Abstract

一种彩色滤光片及其制作方法、显示装置,所述彩色滤光片包括:至少四个像素单元(111),每个像素单元(111)包括彩色滤光层(112),所述四个像素单元(111)分别为第一像素单元、第二像素单元、第三像素单元和第四像素单元,第一像素单元内形成有第一彩色滤光层,第二像素单元内形成有第二彩色滤光层,第三像素单元内形成有第三彩色滤光层,第四像素单元内形成有第四彩色滤光层,所述第四彩色滤光层为第一彩色滤光层、第二彩色滤光层和第三彩色滤光层中的任意两种材料叠加形成。

Description

彩色滤光片及其制作方法、 显示装置 技术领域
本发明的实施例涉及显示技术领域, 具体地, 涉及一种彩色滤光片及其 制作方法、 显示装置。 背景技术
显示装置作为一种彩色图像的输出设备,其再现色彩的能力 -色域是其主 要的性能指标。 显示装置的色域越高, 显示装置再现色彩的能力越高, 否则 显示装置再现色彩的能力越低。 目前, 追求高色域显示装置是每一厂家追求 的目标。
色域是颜色的表现范围, 一般地, 彩色显示设备的色域是其三基色在色 品图中所构成基色三角形的面积。
现有显示装置的色域高低主要由彩色滤光片决定, 如图 1所示, 现有彩 色滤光片的一个像素区 100包括三基色(红绿蓝)对应的像素区 R、 G、 B , 每一个像素区对应一种颜色的彩色滤光层。 该显示装置的色域主要由红绿蓝 三基色色品坐标构成的三角形的面积决定, 色域较小。
现有技术通过以下方式提高显示装置的色域: 一种实施方式为: 釆用量 子点材料制作彩色滤光片, 但是量子点材料相比较通常釆用的光阻材料成本 较高, 不利于实现低成本高性能显示装置; 另一种实施方式为: 背光源釆用 红色、 绿色和蓝色的三种背光二极管 (LED ) , 但是这种设计方式会增加背 光源的成本, 同样不利于实现低成本高性能显示装置。 发明内容
本发明的实施例提供了一种彩色滤光片及其制作方法、 显示装置, 釆用 本发明实施例提供的彩色滤光片可以实现色域较大的显示装置。
本发明的实施例提供一种彩色滤光片, 该彩色滤光片的每个像素区包括 至少四个像素单元, 每个像素单元内包括彩色滤光层, 该至少四个像素单元 包括第一像素单元、 第二像素单元、 第三像素单元和第四像素单元, 第一像 素单元内形成有第一彩色滤光层, 第二像素单元内形成有第二彩色滤光层, 第三像素单元内形成有第三彩色滤光层, 第四像素单元内形成有第四彩色滤 光层, 第四彩色滤光层由第一彩色滤光层、 第二彩色滤光层和第三彩色滤光 层中的任意两种材料叠加形成。
在至少一个实施例中, 第四彩色滤光层中的两种材料的厚度可以相同。 在至少一个实施例中, 第四彩色滤光层的厚度可以与第一彩色滤光层、 第二彩色滤光层和第三彩色滤光层中的至少一个的厚度相同。
在至少一个实施例中, 第四彩色滤光层可以为青色滤光层, 第一彩色滤 光层可以为红色滤光层, 第二彩色滤光层可以为绿色滤光层, 第三彩色滤光 层可以为蓝色滤光层, 青色滤光层可以由绿色滤光层材料和蓝色滤光层材料 叠加形成。
在至少一个实施例中, 第四彩色滤光层可以为黄色滤光层, 第一彩色滤 光层可以为红色滤光层, 第二彩色滤光层可以为绿色滤光层, 第三彩色滤光 叠加形成。
在至少一个实施例中, 第四彩色滤光层可以为洋红色滤光层, 第一彩色 滤光层可以为红色滤光层, 第二彩色滤光层可以为绿色滤光层, 第三彩色滤 光层可以为蓝色滤光层, 洋红色滤光层可以由红色滤光层材料和蓝色滤光层 材料叠加形成。
本发明的实施例还提供一种显示装置, 包括上述任一种彩色滤光片。 本发明的实施例还提供一种彩色滤光片的制作方法, 该彩色滤光片的每 个像素区包括至少四个像素单元, 每个像素单元内包括彩色滤光层, 该至少 四个像素单元包括第一像素单元、 第二像素单元、 第三像素单元和第四像素 单元, 该制作方法可以包括: 制作分别位于第一像素单元、 第二像素单元、 第三像素单元和第四像素单元内的第一彩色滤光层、 第二彩色滤光层、 第三 彩色滤光层和第四彩色滤光层, 其中第四彩色滤光层由第一彩色滤光层、 第 二彩色滤光层和第三彩色滤光层中的任意两种材料形成的膜层叠加而成。
在至少一个实施例中, 第四彩色滤光层可以由第一彩色滤光层、 第二彩 色滤光层和第三彩色滤光层中的任意两种材料形成的厚度相同的膜层叠加而 成。 在至少一个实施例中, 第四彩色滤光层的厚度可以与第一彩色滤光层、 第二彩色滤光层和第三彩色滤光层中的至少一个的厚度相同。
在至少一个实施例中, 形成第一彩色滤光层、 第二彩色滤光层、 第三彩 色滤光层和第四彩色滤光层可以包括: 在第一像素单元对应的区域形成红色 滤光层; 在第二像素单元和第四像素单元对应的区域形成绿色滤光层; 在第 三像素单元和第四像素单元对应的区域形成蓝色滤光层, 使得第四像素单元 对应的区域由绿色滤光层和蓝色滤光层叠加而成。
在至少一个实施例中, 形成第一彩色滤光层、 第二彩色滤光层、 第三彩 色滤光层和第四彩色滤光层可以包括: 在第一像素单元和第四像素单元对应 的区域形成红色滤光层; 在第二像素单元和第四像素单元对应的区域形成绿 色滤光层, 使得第四像素单元对应的区域由绿色滤光层和红色滤光层叠加而 成; 在第三像素单元对应的区域形成蓝色滤光层。
在至少一个实施例中, 形成第一彩色滤光层、 第二彩色滤光层、 第三彩 色滤光层和第四彩色滤光层可以包括: 在第一像素单元和第四像素单元对应 的区域形成红色滤光层; 在第二像素单元对应的区域形成绿色滤光层; 在第 三像素单元和第四像素单元对应的区域形成蓝色滤光层, 使得第四像素单元 对应的区域由蓝色滤光层和红色滤光层叠加而成。
在至少一个实施例中, 第一至第三彩色滤光层可以通过掩模板的全色调 区域形成, 第四彩色滤光层可以通过掩模板的半色调区域形成。
综上所述, 本发明的实施例提供了一种每个像素区包括至少四个像素单 元的彩色滤光片, 每个像素单元包括彩色滤光层, 该四个像素单元分别为第 一像素单元、 第二像素单元、 第三像素单元和第四像素单元, 第一像素单元 内形成有第一彩色滤光层, 第二像素单元内形成有第二彩色滤光层, 第三像 素单元内形成有第三彩色滤光层, 第四像素单元内形成有第四彩色滤光层, 第四彩色滤光层由第一彩色滤光层、 第二彩色滤光层和第三彩色滤光层中的 任意两种材料叠加形成。 与现有的釆用三基色像素构成的像素区相比, 本发 明的实施例可以有效提高显示装置的色域。 附图说明
图 1为现有彩色滤光片的一个像素区的彩色滤光层的结构示意图; 图 2为本发明实施例提供的像素区的结构示意图;
图 3为图 2提供的像素区设置彩色滤光层的结构示意图;
图 4为根据本发明另一实施例的像素区设置彩色滤光层的结构示意图; 图 5为根据本发明另一实施例的像素区设置彩色滤光层的结构示意图; 图 6为根据本发明实施例的制作方法中的中间工艺步骤的彩膜基板的结 构示意图; 以及
图 7为根据本发明实施例的制作方法中的中间工艺步骤的彩膜基板的结 构示意图。 具体实施方式
本发明的实施例提供了一种彩色滤光片及其制作方法、 显示装置, 釆用 本发明实施例提供的彩色滤光片可以实现色域较大的显示装置。
本发明实施例通过设置包括至少四种颜色的像素单元, 每一像素单元设 置一种颜色的彩色滤光层, 与现有釆用三基色像素单元构成的彩色滤光片相 比, 有效提高了显示装置的色域。
这里, 将白光过滤后得到的颜色为红色的像素定义为红色像素单元, 将 过滤后得到的颜色为绿色的像素定义为绿色像素单元, 将过滤后得到的颜色 为蓝色的像素定义为蓝色像素单元, 将过滤后得到的颜色为青色的像素定义 为青色像素单元, 将过滤后得到的颜色为黄色的像素定义为黄色像素单元, 将过滤后得到的颜色为洋红色的像素定义为洋红色像素单元。 和显示装置。
参见图 2和图 3 , 本发明的实施例提供的一种彩色滤光片可以包括位于 衬底基板 1上的至少四个像素单元 111 , 每个像素单元 111 包括彩色滤光层 112。 四个像素单元分别为第一像素单元、 第二像素单元、 第三像素单元和第 四像素单元, 第一像素单元内形成有第一彩色滤光层, 第二像素单元内形成 有第二彩色滤光层, 第三像素单元内形成有第三彩色滤光层, 第四像素单元 内形成有第四彩色滤光层, 其中第四彩色滤光层可以由第一彩色滤光层、 第 二彩色滤光层和第三彩色滤光层中的任意两种材料叠加形成。
图 2仅体现了衬底基板 1上的四个像素单元 111。 图 2仅体现了上述实 施例中的一种实施例, 每个像素区可以包括衬底基板 1 上的四个像素单元 111, 其中第一像素单元为红色像素单元(R), 第二像素单元为绿色像素单 元(G), 第三像素单元为蓝色像素单元(B), 第四像素单元为洋红色像素单 元(Y)。 第四像素单元可以不限于为洋红色像素单元(Υ), 可选地, 可以为 黄色像素单元或青色像素单元等。
图 3仅体现位于每一像素单元中的彩色滤光层。 具体地, 图 3中示出: 位于红色像素单元(R) 内的红色滤光层、 位于绿色像素单元(G) 内的绿色 滤光层、 位于蓝色像素单元(Β) 内的蓝色滤光层、 以及位于洋红色像素单 元(Υ) 内由红色滤光层材料和蓝色滤光层材料叠加形成的膜层。
在上述实施例提供的彩色滤光片中, 每一像素区可以设置有至少四种颜 色的彩色滤光层, 构成的显示装置的色域可以至少由四种颜色色品坐标构成 的面积决定, 由于四种颜色色品坐标构成的面积大于由红绿蓝三基色色品坐 标构成的三角形的面积, 所以可以提高显示装置的色域。
在上述实施例提供的彩色滤光片中, 每一像素区可以包括四种颜色的彩 色滤光层、 五种颜色的彩色滤光层或六种颜色的彩色滤光层层、 或者更多种 颜色的彩色滤光层。 再次强调, 本发明的上述或下述的四种颜色的彩色滤光 层、 五种颜色的彩色滤光层或六种颜色的彩色滤光层指的是白光经过滤后得 到的颜色为四种、 五种或六种的彩色滤光层, 每一种颜色对应一个彩色滤光 层。
可选地, 第四彩色滤光层中的两种材料的厚度可以相同。
进一步地, 第四彩色滤光层的厚度可以与第一彩色滤光层、 第二彩色滤 光层和第三彩色滤光层中的至少一个的厚度相同。
在实施例中, 四种颜色的彩色滤光层中的第一彩色滤光层可以为红色滤 光层(R), 第二彩色滤光层可以为绿色滤光层(G), 第三彩色滤光层可以为 蓝色滤光层(Β), 第四彩色滤光层可以为青色滤光层(C)。
第四彩色滤光层可以不限于为青色滤光层(C)。 可选地, 第四彩色滤光 层可以为洋红色滤光层(M)或黄色滤光层(Y)。
当第一彩色滤光层、 第二彩色滤光层和第三彩色滤光层分别为红色滤光 层(R)、 绿色滤光层(G)、 蓝色滤光层(B)时, 红色滤光层(R)、 绿色滤 光层(G)、 蓝色滤光层(B) 中任意两种材料叠加形成的彩色滤光层, 两种 材料的厚度相同时, 更接近于青色滤光层(C)、 洋红色滤光层(M)或黄色 滤光层(Y); 由于青色滤光层(C)、 洋红色滤光层(M)或黄色滤光层(Y) 过滤得到的颜色也属于基色, 实现的彩色图像效果更好。 如果第四彩色滤光 层的厚度与第一彩色滤光层、 第二彩色滤光层和第三彩色滤光层中的至少一 个的厚度相同, 则显示彩色图像的效果和光线的透过率较一致, 进一步提高 了图像的品质。
图 3所示的每一像素区 11可以包括红色滤光层(R )、 绿色滤光层(G )、 蓝色滤光层(B )和黄色滤光层(Y ), 红色滤光层(R )、 绿色滤光层(G )、 蓝色滤光层(B )和黄色滤光层(Y ) 的相对位置可以不限于图 3中所示的。 图 3仅是用于解释说明本发明的实施例, 不旨在限制本发明。
红色滤光层、 绿色滤光层、 蓝色滤光层可以分别由红色光阻材料、 绿色 光阻材料和蓝色光阻材料形成, 这三种光阻材料也为较常用的光阻材料, 成 本较低, 实施过程较容易。
青色滤光层(C )、 黄色滤光层(Y )和洋红色滤光层(M ) 的形成方式 至少有两种。
一种实施方式为: 如图 4所示, 青色滤光层(C ) 由蓝色光阻材料和绿 色光阻材料形成; 黄色滤光层(Y ) 由红色光阻材料和绿色光阻材料形成; 洋红色滤光层(M ) 由红色光阻材料和蓝色光阻材料形成。
另一种实施方式为: 青色滤光层(C ) 由青色光阻材料形成; 黄色滤光 层(Y ) 由黄色光阻材料形成; 洋红色滤光层(M ) 由洋红色光阻材料形成。
换句话说, 第四彩色滤光层可以为青色滤光层, 第一彩色滤光层可以为 红色滤光层, 第二彩色滤光层可以为绿色滤光层, 第三彩色滤光层可以为蓝 色滤光层, 青色滤光层可以由绿色滤光层材料和蓝色滤光层材料叠加形成。
或者, 第四彩色滤光层可以为黄色滤光层, 第一彩色滤光层可以为红色 滤光层, 第二彩色滤光层可以为绿色滤光层, 第三彩色滤光层可以为蓝色滤 光层, 黄色滤光层可以由红色滤光层材料和绿色滤光层材料叠加形成。
或者, 第四彩色滤光层可以为洋红色滤光层, 第一彩色滤光层可以为红 色滤光层, 第二彩色滤光层可以为绿色滤光层, 第三彩色滤光层可以为蓝色 滤光层, 洋红色滤光层可以由红色滤光层材料和蓝色滤光层材料叠加形成。
如图 4所示的彩色滤光层, 各彩色滤光层, 由常用的红色光阻材料、 绿 色光阻材料和蓝色光阻材料形成, 在提高显示装置色域的同时, 还不增加彩 色滤光片的成本。
在图 4中, "B+G"表示蓝色光阻材料和绿色光阻材料组合形成的青色滤 光层(C); "R+G" 表示红色光阻材料和绿色光阻材料组合形成的黄色滤光 层(Y); "R+B" 表示红色光阻材料和蓝色光阻材料组合形成的洋红色滤光 层(M)。
上述实施例针对每一像素区包括四种颜色的彩色滤光层进行说明, 当然
4所示, 每一像素区可以包括六种颜色的彩色滤光层 112。
参见图 5, 可选地, 每一像素区可以包括红色滤光膜(R)、 绿色滤光膜 (G)、 蓝色滤光膜(B)、 青色滤光膜(C)、 黄色滤光膜 (Y)和洋红色滤光 膜(M)。
红色滤光膜(R)、绿色滤光膜(G)、蓝色滤光膜(B)、青色滤光膜(C)、 黄色滤光膜 (Y)和洋红色滤光膜(M)的相对位置可以不限于附图所示的。
具体实施时, 上述四种颜色或六种颜色的彩色滤光层对应的像素区可以 釆用发白光的背光源照射, 对白光进行过滤, 实现对应颜色的发光显示。 一 方面, 发白光的背光源, 与发射红、 绿或蓝色的背光源相比, 技术较成熟且 成本更低。 另一方面, 釆用包括色饱和度较高的三基色 R、 G和 B对应的彩 色滤光层, 图像的显示品质更高, 同时釆用青色(C)、 黄色(Y)或洋红色 (M)彩色滤光层构成的像素区, 当白光照射该像素区时, 白光被分成四种 颜色或六种颜色的光, 显示装置的色域较三基色构成的像素更高。 此外, 构 成彩色滤光层的1、 G和 B光阻以及青色(C)、 黄色(Y)和洋红色 (M) 光阻的成本相比较现有釆用量子材料制成的彩色滤光片更低, 更有利于实现 低成本高性能的彩色滤光片以及包括该彩色滤光片的显示装置。
本发明的实施例还提供一种显示装置, 包括上述彩色滤光片。
显示装置可以为液晶显示面板、 有机发光显示面板、 显示器等。 彩色滤 光片可以设置在显示装置的彩膜基板或阵列基板上。
当彩色滤光片适用于显示面板中的彩膜基板时, 显示装置还可以包括黑 矩阵, 黑矩阵可以位于相邻彩色滤光层之间的非显示区域。
具体地, 当彩色滤光片适用于显示面板中的彩膜基板时, 彩色滤光片中 的各彩色滤光层可以位于黑矩阵围设的区域, 黑矩阵可以位于彩色滤光层之 间的非显示区域。 彩色滤光片的制作方法总体可以包括以下步骤: 制作分别位于第一像素单元、 第二像素单元、 第三像素单元和第四像素 单元的第一彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四彩色滤光 层的过程, 其中第四彩色滤光层可以由第一彩色滤光层、 第二彩色滤光层和 第三彩色滤光层中的任意两种材料形成的膜层叠加而成。
可选地, 第四彩色滤光层可以由第一彩色滤光层、 第二彩色滤光层和第 三彩色滤光层中的任意两种材料形成的厚度相同的膜层叠加而成。
可选地, 第四彩色滤光层的厚度可以与第一彩色滤光层、 第二彩色滤光 层和第三彩色滤光层中的至少一个的厚度相同。
这里以形成四种颜色的彩色滤光层为例进行说明。形成第一彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四彩色滤光层可以包括:
在第一像素单元对应的区域形成红色滤光层;
在第二像素单元和第四像素单元对应的区域形成绿色滤光层;
在第三像素单元和第四像素单元对应的区域形成蓝色滤光层, 使得第四 像素单元对应的区域由绿色滤光层和蓝色滤光层叠加而成。
或者, 形成第一彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四 彩色滤光层可以包括:
在第一像素单元和第四像素单元对应的区域形成红色滤光层;
在第二像素单元和第四像素单元对应的区域形成绿色滤光层, 使得第四 像素单元对应的区域由绿色滤光层和红色滤光层叠加而成;
在第三像素单元对应的区域形成蓝色滤光层。
或者, 形成第一彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四 彩色滤光层可以包括:
在第一像素单元和第四像素单元对应的区域形成红色滤光层;
在第二像素单元对应的区域形成绿色滤光层;
在第三像素单元和第四像素单元对应的区域形成蓝色滤光层, 使得第四 像素单元对应的区域由蓝色滤光层和红色滤光层叠加而成。
红色滤光层、 绿色滤光层、 蓝色滤光层可以分别由红色光阻材料、 绿色 光阻材料和蓝色光阻材料形成, 青色滤光层(C ) 可以由蓝色光阻材料和绿 色光阻材料形成; 黄色滤光层(Y ) 可以由红色光阻材料和绿色光阻材料形 成; 洋红色滤光层(M )可以由红色光阻材料和蓝色光阻材料形成。
进一步地, 在红色像素区和黄色像素区的红色光阻材料形成的膜层在同 一次构图工艺中完成; 红色像素区和洋红色像素区的红色光阻材料形成的膜 层在同一次构图工艺中完成;
其中, 在红色像素区釆用全色调掩模板, 在黄色像素区和洋红色像素区 釆用半色调掩模板, 使得全色调掩模板对应的光阻层的厚度为半色调掩模板 对应的光阻层的厚度的两倍;
具体地, 在衬底基板上形成覆盖整个衬底基板的红色光阻层, 通过 BGR 掩模板对红色光阻层进行曝光。 一般地, 制作彩色滤光片的光租(即彩色树 月旨)为负性光刻胶,被光照射过的区域保留, 未被照射的区域被刻蚀液去除。 要想实现全色调掩模板对应的光阻层的厚度为半色调掩模板对应的光阻层的 厚度的两倍, 掩模板应该满足如下条件:
与红色像素区对应的掩模板区域为全色调掩模板, 与黄色像素区和洋红 色像素区对应的掩模板区域为半色调掩模板。 全色调掩模板光线的透过率为 100%, 半色调掩模板的光透过率为 50%, 透过率相差二倍, 对应区域形成的 光阻膜层的厚度相差二倍。
在绿色像素区和青色像素区中的绿色光阻层在同一次构图工艺中完成, 在绿色像素区和黄色像素区中的绿色光阻层在同一次构图工艺中完成,其中, 在绿色像素区釆用全色调掩模板, 在青色像素区和黄色像素区釆用半色调掩 模板, 使得全色调掩模板对应的光阻层的厚度为半色调掩模板对应的光阻层 的厚度的两倍; 具体地, 在上述形成红色光阻层的基础上, 在绿色像素区、 青色像素区和黄色像素区形成绿色光阻层; 形成过程与上述形成红色光阻层 的过程类似, 此时的掩模板满足: 在绿色像素区对应的掩模板区域为全色调 掩模板, 在青色像素区和黄色像素区对应的掩模板区域为半色调掩模板。 此 时, 红色像素区、 绿色像素区和黄色像素区的光阻层已经完全形成。
在蓝色像素区、 青色像素区和洋红色像素区中的蓝色光阻层在同一次构 图工艺中完成, 其中在蓝色像素区釆用全色调掩模板, 在青色像素区和洋红 色像素区釆用半色调掩模板, 使得全色调掩模板对应的光阻层的厚度为半色 调掩模板对应的光阻层的厚度的两倍;
具体地, 在上述形成绿色光阻层的基础上, 在蓝色像素区、 青色像素区 和洋红色像素区形成蓝色光阻层;
形成过程与上述形成绿色光阻层的过程类似, 此时的掩模板满足: 在蓝 色像素区对应的掩模板区域为全色调掩模板, 在青色像素区和洋红色像素区 对应的掩模板区域为半色调掩模板。 此时, 蓝色像素区、 青色像素区和洋红 色像素区的光阻层已经完全形成。
上述三步骤形成各颜色彩色滤光层的形成先后顺序可以不限于此, 上述 实施方式仅是其中一种实施例, 仅用于说明本发明的实施例, 不旨在限制本 发明。
如果彩色滤光片适用于彩膜基板时, 彩膜基板的制作方法可以包括: 黑 矩阵的制作过程以及彩色滤光层的制作过程。
黑矩阵和彩色滤光层的制作过程的先后顺序可以不受限制。
可选地, 参见图 6, 先通过曝光工艺在衬底基板 1上形成黑矩阵 3; 接着 在形成有黑矩阵 3的衬底基板 1上形成不同颜色的彩色滤光层 11。
青色滤光层、黄色滤光层和洋红色滤光层可以由两种光阻材料制作而成, 这两种光阻中的任一种光阻可以为红、 绿或蓝色光阻。
在掩模板设计时,对每种颜色的像素间隔地釆用全色调 ( 100%透过率的 掩模格子)和半色调 ( 50%透过率的掩模格子)。
并在对应的半色调的像素区形成两种颜色的光阻叠加的膜层, 叠加方式 有三种组合(B+R )、 ( B+G )和(R+G )。
通过曝光工艺形成 BGR三种彩色光阻层, 因为半色调的掩模的透过率 为全色调的掩模的一半, 故所形成的 BGR膜厚为全色调设计的一半。 这样, 所形成的三种组合(B+R )、 ( B+G )和(R+G ) 的膜厚就可以和全色调时单 独的 BGR膜厚一样。
这里共需要通过三次曝光工艺形成六种颜色的彩色滤光层。
参见图 6, 每一次曝光可以形成与掩模板上的全色调区域对应的厚度为 hi的光阻层、 以及与掩模板上的半色调区域对应的厚度为 h2的光阻层, 其 中 hl=2h2。
在掩模板上的半色调区域经两次曝光形成的膜层如图 7所示为在厚度为 h2的一个区域上再形成厚度为 h2的绿色光阻, 该区域构成的彩色滤光层为 黄色滤光层 Y。 其他颜色的滤光层的形成就不——介绍。
进一步地, 制作过程还可以包括: 通过曝光工艺形成在彩膜基板上的平 坦层(OC )、 隔垫物(PS ) 以平坦化 BGR色阻层及维持单元盒厚。
本发明的实施例无需增加额外的成本, 当白光通过由 (B+R )、 ( B+G ) 和 (R+G )组成的彩色滤光层层时, 分别显示洋红 M、 青色 C和黄色 Y。 这相当于每个像素区由 6种像素单元构成, 从而提高了显示装置的色域。 综上所述, 本发明的实施例通过在每一个像素区设置包括至少四种颜色 的彩色滤光层, 与现有釆用三基色对应的彩色滤光层相比, 有效提高了显示 装置的色域。 不脱离本发明的精神和范围。 这样, 倘若本发明的实施例的这些修改和变型 属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改 动和变型在内。
本申请要求于 2013年 12月 17日递交的中国专利申请第 201310700382.4 号的优先权, 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。

Claims

权利要求书
1、一种彩色滤光片 ,该彩色滤光片的每个像素区包括至少四个像素单元, 每个像素单元内包括彩色滤光层 ,所述至少四个像素单元包括第一像素单元、 第二像素单元、 第三像素单元和第四像素单元, 第一像素单元内形成有第一 彩色滤光层, 第二像素单元内形成有第二彩色滤光层, 第三像素单元内形成 有第三彩色滤光层, 第四像素单元内形成有第四彩色滤光层, 所述第四彩色 滤光层由所述第一彩色滤光层、 所述第二彩色滤光层和所述第三彩色滤光层 中的任意两种材料叠加形成。
2、根据权利要求 1所述的彩色滤光片,其中所述第四彩色滤光层中的两 种材料的厚度相同。
3、根据权利要求 2所述的彩色滤光片,其中所述第四彩色滤光层的厚度 与第一彩色滤光层、 第二彩色滤光层和第三彩色滤光层中的至少一个的厚度 相同。
4、根据权利要求 1至 3中任一项所述的彩色滤光片,其中所述第四彩色 滤光层为青色滤光层, 所述第一彩色滤光层为红色滤光层, 所述第二彩色滤 光层为绿色滤光层, 所述第三彩色滤光层为蓝色滤光层, 所述青色滤光层由 绿色滤光层材料和蓝色滤光层材料叠加形成。
5、根据权利要求 1至 3中任一项所述的彩色滤光片,其中所述第四彩色 滤光层为黄色滤光层, 所述第一彩色滤光层为红色滤光层, 所述第二彩色滤 光层为绿色滤光层, 所述第三彩色滤光层为蓝色滤光层, 所述黄色滤光层由 红色滤光层材料和绿色滤光层材料叠加形成。
6、根据权利要求 1至 3中任一项所述的彩色滤光片,其中所述第四彩色 滤光层为洋红色滤光层, 所述第一彩色滤光层为红色滤光层, 所述第二彩色 滤光层为绿色滤光层, 所述第三彩色滤光层为蓝色滤光层, 所述洋红色滤光 层由红色滤光层材料和蓝色滤光层材料叠加形成。
7、 一种显示装置, 包括权利要求 1至 6中任一项所述的彩色滤光片。
8、一种彩色滤光片的制作方法,该彩色滤光片的每个像素区包括至少四 个像素单元, 每个像素单元内包括彩色滤光层, 所述至少四个像素单元包括 第一像素单元、 第二像素单元、 第三像素单元和第四像素单元, 所述制作方 法包括: 制作分别位于第一像素单元、 第二像素单元、 第三像素单元和第四像素 单元内的第一彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四彩色滤 光层, 其中所述第四彩色滤光层由所述第一彩色滤光层、 所述第二彩色滤光 层和所述第三彩色滤光层中的任意两种材料形成的膜层叠加而成。
9、根据权利要求 8所述的制作方法,其中所述第四彩色滤光层由所述第 一彩色滤光层、 所述第二彩色滤光层和所述第三彩色滤光层中的任意两种材 料形成的厚度相同的膜层叠加而成。
10、 根据权利要求 9所述的制作方法, 其中所述第四彩色滤光层的厚度 与所述第一彩色滤光层、 所述第二彩色滤光层和所述第三彩色滤光层中的至 少一个的厚度相同。
11、根据权利要求 8至 10中任一项所述的制作方法,其中形成所述第一 彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四彩色滤光层包括: 在所述第一像素单元对应的区域形成红色滤光层;
在所述第二像素单元和所述第四像素单元对应的区域形成绿色滤光层; 在所述第三像素单元和所述第四像素单元对应的区域形成蓝色滤光层, 使得所述第四像素单元对应的区域由绿色滤光层和蓝色滤光层叠加而成。
12、根据权利要求 8至 10中任一项所述的制作方法,其中形成所述第一 彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四彩色滤光层包括: 在所述第一像素单元和所述第四像素单元对应的区域形成红色滤光层; 在所述第二像素单元和所述第四像素单元对应的区域形成绿色滤光层, 使得所述第四像素单元对应的区域由绿色滤光层和红色滤光层叠加而成; 在所述第三像素单元对应的区域形成蓝色滤光层。
13、根据权利要求 8至 10中任一项所述的制作方法,其中形成所述第一 彩色滤光层、 第二彩色滤光层、 第三彩色滤光层和第四彩色滤光层包括: 在所述第一像素单元和所述第四像素单元对应的区域形成红色滤光层; 在所述第二像素单元对应的区域形成绿色滤光层;
在所述第三像素单元和所述第四像素单元对应的区域形成蓝色滤光层, 使得所述第四像素单元对应的区域由蓝色滤光层和红色滤光层叠加而成。
14、根据权利要求 8至 10中任一项所述的制作方法,其中所述第一至第 三彩色滤光层通过掩模板的全色调区域形成, 所述第四彩色滤光层通过所述 掩模板的半色调区域形成 c
PCT/CN2014/081135 2013-12-17 2014-06-30 彩色滤光片及其制作方法、显示装置 WO2015090029A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/430,024 US20160018575A1 (en) 2013-12-17 2014-06-30 Color filter and fabricating method thereof, and display apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310700382.4 2013-12-17
CN201310700382.4A CN103698832B (zh) 2013-12-17 2013-12-17 一种彩色滤光片及其制作方法、显示装置

Publications (1)

Publication Number Publication Date
WO2015090029A1 true WO2015090029A1 (zh) 2015-06-25

Family

ID=50360423

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/081135 WO2015090029A1 (zh) 2013-12-17 2014-06-30 彩色滤光片及其制作方法、显示装置

Country Status (3)

Country Link
US (1) US20160018575A1 (zh)
CN (1) CN103698832B (zh)
WO (1) WO2015090029A1 (zh)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103698832B (zh) * 2013-12-17 2017-01-25 合肥京东方光电科技有限公司 一种彩色滤光片及其制作方法、显示装置
CN104375315B (zh) * 2014-11-18 2017-06-16 深圳市华星光电技术有限公司 彩膜基板、彩色滤光片、显示面板及显示装置
CN104460158B (zh) * 2014-12-18 2018-02-13 合肥鑫晟光电科技有限公司 一种像素排列结构、显示面板及显示装置
KR102314795B1 (ko) * 2015-01-26 2021-10-19 삼성디스플레이 주식회사 액정 표시 장치
KR20160093188A (ko) * 2015-01-28 2016-08-08 삼성디스플레이 주식회사 액정 표시 장치
CN105988240B (zh) * 2015-02-16 2020-03-20 上海仪电显示材料有限公司 滤色片的制作方法、滤色片以及液晶显示装置
CN104865734B (zh) * 2015-06-08 2019-02-19 深圳市华星光电技术有限公司 彩膜基板及液晶面板
CN105353554A (zh) * 2015-12-04 2016-02-24 深圳市华星光电技术有限公司 彩膜基板的制作方法及液晶显示装置
CN105467664A (zh) * 2016-01-13 2016-04-06 深圳市华星光电技术有限公司 彩色滤光片的制造方法、彩色滤光片、显示面板及显示器
CN105739167B (zh) * 2016-05-06 2021-01-26 京东方科技集团股份有限公司 一种彩膜、基板及显示装置
CN106200105A (zh) * 2016-09-26 2016-12-07 合肥鑫晟光电科技有限公司 一种彩膜基板及其制备方法、显示面板、显示装置
CN107608125A (zh) * 2017-11-03 2018-01-19 惠科股份有限公司 显示面板及其制造方法
US10756148B2 (en) * 2018-01-09 2020-08-25 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Inkjet printing OLED display panel and manufacturing method for the same
CN110518052B (zh) * 2019-08-29 2022-02-25 京东方科技集团股份有限公司 一种显示面板和显示装置
TWI734213B (zh) * 2019-10-08 2021-07-21 勝智會科技顧問股份有限公司 無色差之影像掃描、顯示及照明系統
CN110729336A (zh) * 2019-10-28 2020-01-24 昆山国显光电有限公司 一种显示面板及显示装置
CN111818314A (zh) * 2020-06-23 2020-10-23 北京迈格威科技有限公司 一种滤波器阵列及图像传感器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008165050A (ja) * 2006-12-28 2008-07-17 Dainippon Printing Co Ltd カラーフィルタの製造方法およびカラーフィルタ
JP2008176016A (ja) * 2007-01-18 2008-07-31 Dainippon Printing Co Ltd カラーフィルタの製造方法およびカラーフィルタ
US20100182549A1 (en) * 2009-01-20 2010-07-22 Casio Computer Co., Ltd. Lcd apparatus
CN103076696A (zh) * 2013-01-31 2013-05-01 京东方科技集团股份有限公司 一种显示装置、彩色滤光片及其制作方法
CN103376592A (zh) * 2012-04-27 2013-10-30 京东方科技集团股份有限公司 一种显示装置、彩色滤光片及其制作方法
CN103698832A (zh) * 2013-12-17 2014-04-02 合肥京东方光电科技有限公司 一种彩色滤光片及其制作方法、显示装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1770676B1 (en) * 2005-09-30 2017-05-03 Semiconductor Energy Laboratory Co., Ltd. Display device and electronic device
JP4648165B2 (ja) * 2005-11-22 2011-03-09 エルジー ディスプレイ カンパニー リミテッド 液晶表示素子用カラーフィルタ基板及びその製造方法
CN101038405A (zh) * 2006-03-15 2007-09-19 中华映管股份有限公司 多区域垂直配向型液晶显示器
CN100516998C (zh) * 2006-11-17 2009-07-22 群康科技(深圳)有限公司 液晶显示器及其驱动方法
JP2008203666A (ja) * 2007-02-21 2008-09-04 Dainippon Printing Co Ltd 半透過型液晶表示装置用カラーフィルタ
CN101551544B (zh) * 2008-04-03 2010-12-08 胜华科技股份有限公司 具触控功能的彩色滤光片及液晶显示装置
US8558976B2 (en) * 2009-10-15 2013-10-15 Sharp Kabushiki Kaisha Color filter substrate and liquid crystal display device
TWI465817B (zh) * 2011-11-23 2014-12-21 Au Optronics Corp 顯示面板
US9030767B2 (en) * 2012-05-11 2015-05-12 Shenzhen China Star Optoelectronics Technology Co Ltd. Color filter and manufacturing method thereof
CN103227189B (zh) * 2013-04-09 2015-12-02 北京京东方光电科技有限公司 一种量子点发光二极管显示器件及显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008165050A (ja) * 2006-12-28 2008-07-17 Dainippon Printing Co Ltd カラーフィルタの製造方法およびカラーフィルタ
JP2008176016A (ja) * 2007-01-18 2008-07-31 Dainippon Printing Co Ltd カラーフィルタの製造方法およびカラーフィルタ
US20100182549A1 (en) * 2009-01-20 2010-07-22 Casio Computer Co., Ltd. Lcd apparatus
CN103376592A (zh) * 2012-04-27 2013-10-30 京东方科技集团股份有限公司 一种显示装置、彩色滤光片及其制作方法
CN103076696A (zh) * 2013-01-31 2013-05-01 京东方科技集团股份有限公司 一种显示装置、彩色滤光片及其制作方法
CN103698832A (zh) * 2013-12-17 2014-04-02 合肥京东方光电科技有限公司 一种彩色滤光片及其制作方法、显示装置

Also Published As

Publication number Publication date
CN103698832B (zh) 2017-01-25
CN103698832A (zh) 2014-04-02
US20160018575A1 (en) 2016-01-21

Similar Documents

Publication Publication Date Title
WO2015090029A1 (zh) 彩色滤光片及其制作方法、显示装置
JP2007017973A5 (zh)
TWI378740B (en) Full-color organic light emitting diode display panel and method thereof
US9823567B2 (en) Manufacturing method of mask plate for shielding during sealant-curing
WO2013159527A1 (zh) 显示装置、彩色滤光片及其制作方法
JP2007140355A (ja) 液晶表示素子用カラーフィルタ基板及びその製造方法
WO2014153857A1 (zh) 彩膜基板、显示面板及显示装置
WO2018040144A1 (zh) 显示装置及其滤光片
US20070052354A1 (en) Organic electroluminescent display device with color
CN104166177A (zh) 光栅及其制作方法、显示基板和显示装置
WO2016106877A1 (zh) 像素结构及显示装置
WO2017012145A1 (zh) 彩色滤光片的制备方法
CN106896569B (zh) 一种彩色滤光基板
CN101517439B (zh) 彩色滤光片基板和液晶显示装置
JP5376393B2 (ja) カラーフィルターの製造方法、フォトマスクセット
CN202453608U (zh) 一种彩膜基板和液晶显示器
CN103592798A (zh) 一种具有设定高度的隔垫物及其制作方法
TW201322215A (zh) 彩色濾光片基板及應用其之液晶顯示面板
KR101783133B1 (ko) 높은 색재현성 플라즈모닉 컬러 필터
JP4984905B2 (ja) カラーフィルタの製造方法およびカラーフィルタ
JP2007178899A (ja) カラーフィルタとその製造方法及び液晶表示装置
JP2008165050A (ja) カラーフィルタの製造方法およびカラーフィルタ
JP2008039802A (ja) カラーフィルタ及びそれを用いた液晶表示装置
JP5162976B2 (ja) オンチップカラーフィルタ用フォトマスク及びそれを用いたオンチップカラーフィルタの製造方法
JP2020183995A (ja) カラーフィルタ及びその製造方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14430024

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14873028

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 08/11/2016)

122 Ep: pct application non-entry in european phase

Ref document number: 14873028

Country of ref document: EP

Kind code of ref document: A1