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 PDFInfo
- 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
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- Prior art keywords
- filter layer
- color filter
- pixel unit
- color
- pixel
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 70
- 229920002120 photoresistant polymer Polymers 0.000 description 67
- 239000003086 colorant Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 25
- 239000000758 substrate Substances 0.000 description 18
- 239000011159 matrix material Substances 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 238000000059 patterning Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002096 quantum dot Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- 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
-
- 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
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
-
- 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]
-
- 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
- G02F2201/52—RGB 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.
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Abstract
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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 |
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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 |
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