WO2018028020A1 - 有机发光显示器及其制作方法 - Google Patents

有机发光显示器及其制作方法 Download PDF

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Publication number
WO2018028020A1
WO2018028020A1 PCT/CN2016/098944 CN2016098944W WO2018028020A1 WO 2018028020 A1 WO2018028020 A1 WO 2018028020A1 CN 2016098944 W CN2016098944 W CN 2016098944W WO 2018028020 A1 WO2018028020 A1 WO 2018028020A1
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Prior art keywords
sub
pixel
light
pixels
region
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PCT/CN2016/098944
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English (en)
French (fr)
Inventor
顾宇
徐湘伦
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/311,627 priority Critical patent/US10418422B2/en
Publication of WO2018028020A1 publication Critical patent/WO2018028020A1/zh
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    • 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
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • 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
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • 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]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • 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
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels

Definitions

  • the present invention relates to the field of display technology, and in particular to an organic light emitting display and a method of fabricating the same.
  • Organic electroluminescent devices are characterized by high efficiency, high brightness, wide viewing angle, low power consumption, self-illumination, low driving voltage, fast response, full color, light weight, flexibility and easy processing, suitable for field use. It meets the requirements of higher performance and greater information capacity of display devices in today's information age, and thus has become one of the major display technologies.
  • OLED displays are generally arranged with three sub-pixels of red, green and blue.
  • three sub-pixels of RGB are required to be simultaneously lit to be white, which is obviously more expensive than a simple white light device. Electricity increases the energy consumption of the display device.
  • the invention provides an organic light emitting display and a manufacturing method thereof, which solve the problems of high power consumption and high cost of the organic light emitting display in the prior art.
  • an organic light emitting display comprising: a substrate layer, a first electrode layer, a light emitting layer, and a second electrode layer which are sequentially stacked;
  • the display includes a plurality of pixels in the light emitting region, each pixel defining at least three sub-pixels, wherein one of the sub-pixels is a white light sub-pixel, and at least two of the remaining sub-pixels are necessary colors including synthetic white light.
  • a basic sub-pixel of the luminescent material at least two of the basic sub-pixels each include a natural color region and a light-combining region, and a luminescent material of a necessary color of the corresponding synthetic white light in the light combining region of the at least two of the basic sub-pixels is laminated or Mixing to form the white light sub-pixels; wherein functional layers other than the light-emitting layers of all of the sub-pixels are integrally formed without regions; the number of basic sub-pixels is three, respectively, blue sub-pixels, red sub-pixels a pixel, a green sub-pixel; the blue sub-pixel and the red sub-pixel each include a true color area and a light combining area, and the blue sub-pixel Hop regions of the same color area light emitting layers, blue light emitting layer are the luminescent material synthesized white light of the red sub-pixel corresponding to the required color is yellow light emitting material.
  • a filter layer for only passing red light is provided only corresponding to the red sub-pixel local color region.
  • an organic light emitting display comprising:
  • a substrate layer a first electrode layer, a light-emitting layer, and a second electrode layer which are sequentially stacked;
  • the display includes a plurality of main pixels in a display area, each of the main pixels defining at least three sub-pixels, wherein one of the sub-pixels is a white light sub-pixel, and at least one of the remaining sub-pixels comprises a synthetic white light
  • the basic sub-pixel includes a natural color region and a light-combining region, and a luminescent material of a corresponding color of the corresponding synthetic white light in the light combining region is laminated or mixed with another luminescent material of a color necessary for synthesizing white light to constitute the white photon. Pixel.
  • the functional layers other than the light-emitting layers of all of the sub-pixels are integrally formed without regions.
  • another luminescent material of a color necessary for synthesizing white light is formed in a region corresponding to the white sub-pixel and one of the basic sub-pixels.
  • the at least three sub-pixels include at least two of the basic sub-pixels, and the luminescent materials of the necessary colors of the corresponding synthetic white light in the light-combining regions of the at least two of the basic sub-pixels are stacked or mixed to form The white light sub-pixel.
  • the number of the basic sub-pixels is three, which are respectively a blue sub-pixel, a red sub-pixel, and a green sub-pixel; the blue sub-pixel and the red sub-pixel each include a true color area and a light combining area, and the blue sub-pixel
  • the natural color region and the light-emitting region are the same as the light-emitting layer, and both are blue light-emitting layers, and the light-emitting material of the corresponding color of the corresponding synthetic white light in the red sub-pixel is a yellow light-emitting material.
  • the filter layer for only passing the red light only corresponding to the red sub-pixel local color region is included.
  • an organic light emitting display comprising:
  • a substrate layer a first electrode layer, a light-emitting layer, and a second electrode layer which are sequentially stacked;
  • the display includes a plurality of pixels in the light emitting region, each pixel defining at least three sub-pixels, wherein one of the sub-pixels is a white light sub-pixel, and at least two of the remaining sub-pixels are necessary colors including synthetic white light
  • the basic sub-pixel of the luminescent material
  • At least two of the basic sub-pixels each include a natural color region and a light-combining region, and light-emitting materials of a corresponding color of the corresponding synthetic white light in the light combining regions of the at least two of the basic sub-pixels are laminated or mixed to constitute the white Photon pixels.
  • the functional layers other than the light-emitting layers of all of the sub-pixels are integrally formed without regions.
  • the number of the basic sub-pixels is three, which are respectively a blue sub-pixel, a red sub-pixel, and a green sub-pixel;
  • the blue sub-pixel and the red sub-pixel each include a local color region and a light-combining region, and the local color region of the blue sub-pixel and the light-emitting region of the light-emitting region are the same, both are blue light-emitting layers, and the corresponding composites in the red sub-pixels
  • the luminescent material of the color necessary for white light is a yellow luminescent material.
  • a filter layer for only passing red light is provided only corresponding to the red sub-pixel local color region.
  • another technical solution adopted by the present invention is to provide a method for fabricating an organic light emitting display, the method comprising:
  • each of the main pixels defines at least three sub-pixels, one of the sub-pixels is a white-light sub-pixel, and at least one of the remaining sub-pixels is a basic sub-pixel containing a luminescent material of a color necessary for synthesizing white light;
  • the basic sub-pixel includes a natural color region and a light-combining region, and a luminescent material of a corresponding color of the corresponding synthetic white light in the light combining region is laminated or mixed with another luminescent material of a color necessary for synthesizing white light to constitute the white photon. Pixel.
  • the forming the light emitting layer comprises:
  • one of the basic sub-pixels comprising a luminescent material of a color necessary for synthesizing white light using a precision mask having a first opening size, and forming the remaining basic sub-pixels using a precision mask having a second opening size, and Forming another luminescent material of a color necessary for synthesizing white light by using a precision mask having a third opening size, and forming the luminescent material corresponding to the white photo sub-pixel and the one basic sub-pixel;
  • the first opening and the third opening are larger than the second opening.
  • a functional layer other than the light emitting layer of all the sub-pixels is formed by using a precision mask having a fourth opening size, and the fourth opening area corresponds to an area of the main pixel.
  • the organic light emitting display of the present invention includes a plurality of main pixels in the display area, each of the main pixels defining at least three sub-pixels, wherein one sub-pixel is white a photonic pixel, at least one of the remaining sub-pixels is a basic sub-pixel comprising a luminescent material of a color necessary for synthesizing white light, the sub-pixel comprising a natural color region and a light-combining region, and a luminescent material of a corresponding color corresponding to the synthesized white light in the light-combining region and another A luminescent material of a color necessary for synthesizing white light is laminated or mixed to constitute the white sub-pixel.
  • the RGBW four-pixel method can not only improve the brightness and color of the picture, but also save energy and prolong the service life of the organic light-emitting display, and since the white-light sub-pixel is a light-emitting material of at least one color necessary for synthesizing white light.
  • the basic sub-pixel is formed by laminating or mixing with another luminescent material of the necessary color, and at least the production process is compared with the prior art method of forming four pixels by using four small-open precision masks. The use of a precision mask once again reduces costs.
  • FIG. 1 is a schematic structural view of an embodiment of an organic light emitting display according to the present invention.
  • FIG. 2A is a schematic structural view of an embodiment of a main pixel of a display area of an organic light emitting display according to the present invention.
  • 2B is a schematic structural diagram of another embodiment of a main pixel of a display area of an organic light emitting display according to the present invention.
  • 2C is a schematic structural diagram of another embodiment of a main pixel of a display area of an organic light emitting display according to the present invention.
  • FIG. 3 is a schematic flow chart of an embodiment of a method for fabricating an organic light emitting display according to the present invention.
  • FIG. 4 is a schematic flow chart of an embodiment of a method for fabricating an illuminating layer of an organic light emitting display according to the present invention
  • 5A is a schematic structural view of a specific embodiment of a method for fabricating an illuminating layer of the organic luminescent display of FIG. 4;
  • 5B is a schematic structural view of another embodiment of a method for fabricating an illuminating layer of the organic luminescent display of FIG. 4;
  • 5C is a schematic structural view of still another embodiment of a method for fabricating an illuminating layer of the organic luminescent display of FIG. 4;
  • FIG. 5D is a schematic structural view of a specific implementation manner of the method for fabricating the organic light emitting display of FIG. 3.
  • FIG. 5D is a schematic structural view of a specific implementation manner of the method for fabricating the organic light emitting display of FIG. 3.
  • FIG. 1 is a schematic structural view of an embodiment of an organic light emitting display according to the present invention.
  • the organic light emitting display of the present embodiment includes a substrate layer 101, a first electrode layer 102, a light emitting layer 103, and a second electrode layer 104 which are sequentially disposed.
  • the substrate layer 101 is a transparent substrate, and may be a glass substrate or a flexible substrate.
  • the flexible substrate is made of one or more materials of a polyester type or a polyimide type compound.
  • the first electrode layer 102 and the second electrode layer 104 are an anode layer and a cathode layer of the organic light emitting display, respectively.
  • the anode layer 102 may be an inorganic material or an organic conductive polymer, wherein the inorganic material is a metal or a metal oxide, the metal is a metal having a higher work function, including gold, copper, silver, etc., and the metal oxide is specifically indium tin oxide (ITO). ), zinc oxide, zinc tin oxide, etc.; the organic conductive polymer is a material of polythiophene, sodium polyvinylbenzenesulfonate, polyaniline.
  • the cathode layer 104 may be a metal or a metal alloy, wherein the metal is a metal having a lower work function, including lithium, magnesium, calcium, barium, aluminum, indium, etc., the metal alloy is a metal alloy having a lower work function or they are combined with gold and silver. Copper alloys, and other embodiments, use a cathode layer in which metal and metal fluoride are alternately formed, such as a cathode layer formed of lithium fluoride and metallic silver, lithium fluoride and metallic aluminum.
  • the luminescent layer 103 is made of a luminescent material and a phosphorescent dopant, which is not limited herein.
  • the display region of the organic light-emitting display formed by the substrate layer 101, the first electrode layer 102, the light-emitting layer 103, and the second electrode layer 401, that is, the light-emitting layer 103 includes a plurality of main pixels, each of which defines at least three sub-pixels. Is part of each subpixel.
  • One of the sub-pixels is a white photo sub-pixel, and at least one of the remaining sub-pixels is a basic sub-pixel containing a luminescent material of a color necessary for synthesizing white light.
  • the basic sub-pixel includes a natural color region and a light-combining region, and the light-emitting material of a color necessary for the corresponding synthetic white light in the light-combining region is laminated or mixed with another light-emitting material of a color necessary for synthesizing white light to constitute the white light sub-pixel.
  • FIG. 2A is a schematic structural diagram of an embodiment of a main pixel of a display area of an organic light emitting display according to the present invention.
  • the display area includes 4 sub-pixels, wherein the W sub-pixel 201 is a white photon pixel.
  • the number of basic sub-pixels is three, which are blue sub-pixel B sub-pixel 202, red sub-pixel R sub-pixel 203, and green sub-pixel G sub-pixel 204, wherein, in other embodiments, the white sub-pixel and
  • the three basic sub-pixels may also be in other presentation modes, as shown in the display form of FIG. 2B, only the B sub-pixel 202 and the R sub-pixel 203 and the W sub-pixel respectively.
  • 201 is adjacent, and is not limited herein.
  • the red sub-pixel R sub-pixel 203 includes a red region of the original color region and a light combining region, wherein the light combining region includes a yellow light-emitting material necessary for synthesizing white light, and specifically, the yellow light-emitting material is located at the same time.
  • W subpixel The luminescent materials of the adjacent blue sub-pixel B sub-pixels 202 are stacked or mixed, and since the blue luminescent material and the yellow luminescent material are complementary in color, white light can be emitted, and therefore, the W sub-pixel A region where 201 is laminated or mixed with the light-emitting material of the B sub-pixel 202 constitutes the W sub-pixel 201 to emit white light.
  • the blue sub-pixel B sub-pixel 202 is synthesized or mixed with a yellow light-emitting material or laminated to emit white light, and a region not mixed or laminated with the yellow light material is still a blue light-emitting material to emit blue light.
  • the luminescent material of the green sub-pixel G sub-pixel 204 is green to emit green light.
  • the true color area of the 203 of the red sub-pixel R sub-pixel includes a red area, that is, red light can be emitted. That is, by the arrangement of the mixed region and the blue sub-pixel B sub-pixel 202 being synthesized or mixed or laminated with the yellow light-emitting material, the display of the 4-pixel color can be realized without additional cost.
  • the luminescent material of the 203 light combining region of the red sub-pixel R sub-pixel includes a yellow luminescent material necessary for synthesizing white light, in order to make the emitted red light of the organic light-emitting display as much as possible.
  • the luminescent layer formed by the yellow luminescent material partially covers the red light region, and the OLED of the present embodiment is bonded to the 203 region of the red sub-pixel R sub-pixel corresponding to the glass cover, that is, the original region of the R sub-pixel.
  • the red color filter layer 2031 is as shown in FIG. 2C, wherein the red filter layer 2031 can only pass red light.
  • the blue sub-pixel also includes a natural color region and a light combining region, and the blue material of the light combining region and the yellow light material of the light combining region of the red sub-pixel are laminated or mixed to form the white light sub-pixel.
  • the natural color region of the blue sub-pixel and the light-emitting layer of the light-combining region are the same, that is, the luminescent materials are the same, and both are blue light-emitting layers.
  • one basic sub-pixel of the luminescent material of the color necessary for synthesizing white light of the organic light-emitting display is formed by a precision mask having a first opening size, to form a red sub-pixel, for example, first
  • the precision reticle of the opening size forms a yellow luminescent material necessary for synthesizing white light.
  • a red luminescent material and a luminescent layer forming a red sub-pixel display are formed while forming the yellow luminescent material.
  • the basic sub-pixel may also be a blue sub-pixel, which is not limited herein.
  • the green basic sub-pixel of the organic light emitting display is formed by a precision mask having a second opening size, wherein the second opening of the precision mask is smaller than the first opening.
  • Another basic sub-pixel of the luminescent material of the color necessary for synthesizing white light of the organic light-emitting display is formed by a precision mask having a third opening size, wherein when the precision mask of the first opening size forms a red sub-pixel, the first The precision mask of the three opening size forms a blue sub-pixel, and when the precision mask of the first opening size forms a blue sub-pixel, the precision mask of the third opening size forms a red sub-pixel, which is not limited herein. . Wherein the third opening is also larger than the second opening.
  • the filter layer of the red sub-pixel corresponding region that can only pass the red light can be inkjet printed or otherwise correspondingly formed on the cover corresponding to the red sub-pixel color region of the organic light emitting display. On the glass.
  • the order of forming the sub-pixels of the plexiglass display by the precision reticle having different opening sizes is not limited to the above manner.
  • the precision mask having the second opening size may also be adopted first.
  • the film plate forms a green basic sub-pixel, and then forms a red sub-pixel of a yellow luminescent material necessary for synthesizing white light and a precision mask plate having a third opening size to form a blue sub-pixel through a precision mask having a first opening size , not limited here.
  • At least one precision mask is used, which reduces the cost, compared with the prior art method of forming four pixels through four small openings of the precision mask.
  • the functional layers other than the light-emitting layer of the at least three sub-pixels of the organic light-emitting display such as a commonly used hole injection layer, hole transport layer, electron blocking layer, and hole blocking layer
  • the electron transport layer and a partial region of the electron injection layer are integrally formed.
  • the above functional layer is formed by a precision mask having a fourth opening size.
  • the area of the fourth opening corresponds to the area of the main pixel.
  • the organic light emitting display of the present embodiment includes a plurality of main pixels in a display area, and each of the main pixels defines at least three sub-pixels, wherein one sub-pixel is a white sub-pixel, and the remaining sub-pixels At least one of the basic sub-pixels comprising a luminescent material of a color necessary for synthesizing white light, the sub-pixel comprising a natural color region and a light-combining region, a corresponding luminescent material of a corresponding color of the synthetic white light and another color necessary for synthesizing the white light
  • the luminescent materials are laminated or mixed to form the white sub-pixels.
  • the RGBW four-pixel method can not only improve the brightness and color of the picture, but also save energy and prolong the service life of the organic light-emitting display, and since the white-light sub-pixel is a light-emitting material of at least one color necessary for synthesizing white light.
  • the basic sub-pixel is formed by laminating or mixing with another luminescent material of the necessary color, and at least the production process is compared with the prior art method of forming four pixels by using four small-open precision masks. The use of a precision mask once again reduces costs.
  • the influence of the luminescent material corresponding to the necessary color of the synthesized white light in the red sub-pixel on the display of red light can be eliminated. Make the red light of the illuminated organic display more precious.
  • FIG. 3 is a schematic flow chart of an embodiment of a method for fabricating an organic light emitting display according to the present invention.
  • the manufacturing method of this embodiment includes the following steps:
  • 301 Forming a laminated substrate layer, a first electrode layer, a light emitting layer, and a second electrode layer in order to form a display panel including a plurality of main pixels in the display region.
  • each of the main pixels defines at least three sub-pixels, one of the sub-pixels is a white-light sub-pixel, and at least one of the remaining sub-pixels is a basic sub-pixel containing a luminescent material of a color necessary for synthesizing white light;
  • the basic sub-pixel includes a natural color region and a light-combining region, and a luminescent material of a corresponding color of the corresponding synthetic white light in the light combining region is laminated or mixed with another luminescent material of a color necessary for synthesizing white light to constitute the white photon. Pixel.
  • the substrate layer is a transparent substrate, and may be a glass substrate or a flexible substrate, wherein the flexible substrate is made of one or more materials of a polyester type or a polyimide type compound.
  • the first electrode layer and the second electrode layer are respectively an anode layer and a cathode layer of the organic light emitting display.
  • the anode layer may be an inorganic material or an organic conductive polymer, wherein the inorganic material is a metal or a metal oxide, the metal is a metal having a higher work function, including gold, copper, silver, etc., and the metal oxide is specifically indium tin oxide (ITO). , zinc oxide, zinc tin oxide, etc.; the organic conductive polymer is a material of polythiophene, sodium polyvinylbenzenesulfonate, polyaniline.
  • the cathode layer may be a metal or a metal alloy, wherein the metal is a metal having a lower work function, including lithium, magnesium, calcium, barium, aluminum, indium, etc., the metal alloy is a metal alloy having a lower work function or they are combined with gold, silver, Copper alloys, as well as other embodiments, employ a cathode layer in which metal and metal fluoride are alternately formed, such as a cathode layer formed of lithium fluoride and metallic silver, lithium fluoride and metallic aluminum.
  • the luminescent layer is made of a luminescent material and a phosphorescent dopant, which is not limited herein.
  • FIG. 4 is a schematic flow chart of an embodiment of a method for fabricating an illuminating layer of an organic luminescent display according to the present invention.
  • the method for fabricating the luminescent layer comprises the following steps:
  • the display area composed of the light emitting layer includes four sub-pixels, wherein the W sub-pixel is a white light sub-pixel.
  • the number of basic sub-pixels is three, which are respectively a blue sub-pixel B sub-pixel, a red sub-pixel R sub-pixel, and a green sub-pixel G sub-pixel, wherein the presentation forms of the four sub-pixels are not limited.
  • the B sub-pixel and the R sub-pixel are respectively adjacent to the W sub-pixel, and are not limited herein.
  • the red sub-pixel R sub-pixel includes a red region of the original color region and a light combining region, wherein the light combining region includes a yellow light-emitting material necessary for synthesizing white light, and specifically, the yellow light-emitting material is also located at the same
  • the luminescent materials of the blue sub-pixel B sub-pixels adjacent to the sub-pixel are stacked or mixed, and since the blue luminescent material and the yellow luminescent material complement each other in color, white light can be emitted, and therefore, the W sub-pixel and the B sub-pixel
  • the luminescent material is laminated or mixed to form the W sub-pixel to emit white light.
  • a basic sub-pixel of the luminescent material of the color necessary for synthesizing white light of the organic light-emitting display is formed by a precision mask having a first opening size, as shown in FIG. 5A, wherein Y is a color illuminating necessary for synthesizing white light
  • the material is formed by forming a red sub-pixel as an example.
  • a yellow luminescent material necessary for synthesizing white light is formed by a precision mask having a first opening size.
  • a red luminescent material is formed while forming a yellow luminescent material.
  • the material forms a luminescent layer that is displayed in the true color of the red sub-pixel.
  • the basic sub-pixel may also be a blue sub-pixel, which is not limited herein.
  • the green basic sub-pixel of the organic light emitting display is formed by a precision mask having a second opening size, as shown in FIG. 5B, that is, a green sub-pixel G sub-pixel is formed to emit green light.
  • the second opening of the precision mask is smaller than the first opening.
  • Another basic sub-pixel of the luminescent material of the color necessary for synthesizing white light of the organic light-emitting display is formed by a precision mask having a third opening size, wherein when the precision mask of the first opening size forms a red sub-pixel, the first The precision mask of the three opening size forms a blue sub-pixel, and when the precision mask of the first opening size forms a blue sub-pixel, the precision mask of the third opening size forms a red sub-pixel, which is not limited herein. . Wherein the third opening is also larger than the second opening.
  • the blue sub-pixel sub-pixels are synthesized or mixed with a yellow light-emitting material or laminated to emit white light, and a region that is not mixed or laminated with the yellow light material is still a blue light-emitting material to emit blue light.
  • the luminescent layer exhibiting blue light is also formed by a precision mask having a third opening size.
  • the blue sub-pixel also includes a natural color region and a light combining region, and the blue material of the light combining region and the yellow light material of the light combining region of the red sub-pixel are laminated or mixed to form the white light sub-pixel.
  • the natural color region of the blue sub-pixel and the light-emitting layer of the light-combining region are the same, that is, the luminescent materials are the same, and both are blue light-emitting layers. Both the natural color region and the light combining region are formed by using a precision mask having a third opening size.
  • the luminescent material of the light combining region of the red sub-pixel R sub-pixel includes a yellow luminescent material necessary for synthesizing white light, in order to make the emitted red light of the organic light-emitting display as much as possible.
  • the illuminating layer formed by the yellow luminescent material partially covers the red light region, and the OLED display of the embodiment has a layer of a red sub-pixel R sub-pixel corresponding to the glass cover, that is, a true color region of the R sub-pixel.
  • a red filter layer that only passes red light.
  • the filter layer of the red sub-pixel corresponding region that can only pass the red light can be formed by inkjet printing or other correspondingly on the cover glass corresponding to the red sub-pixel color region of the organic light emitting display.
  • the order of forming the sub-pixels of the plexiglass display by the precision reticle having different opening sizes is not limited to the above manner.
  • the precision mask having the second opening size may also be adopted first.
  • the film plate forms a green basic sub-pixel, and then forms a red sub-pixel of a yellow luminescent material necessary for synthesizing white light and a precision mask plate having a third opening size to form a blue sub-pixel through a precision mask having a first opening size , not limited here.
  • At least one precision mask is used, which reduces the cost, compared with the prior art method of forming four pixels through four small openings of the precision mask.
  • the fourth opening area corresponds to the area of the main pixel, as shown in FIG. 5D.
  • the functional layers other than the light-emitting layer of the at least three sub-pixels of the organic light-emitting display such as a commonly used hole injection layer, hole transport layer, electron blocking layer, hole blocking layer, electron transport layer, and electron injection layer Part of the area is formed integrally.
  • the organic light emitting display of the present embodiment includes a plurality of main pixels in a display area, and each of the main pixels defines at least three sub-pixels, wherein one sub-pixel is a white sub-pixel, and the remaining sub-pixels At least one of the basic sub-pixels comprising a luminescent material of a color necessary for synthesizing white light, the sub-pixel comprising a natural color region and a light-combining region, a corresponding luminescent material of a corresponding color of the synthetic white light and another color necessary for synthesizing the white light
  • the luminescent materials are laminated or mixed to form the white sub-pixels.
  • the RGBW four-pixel method can not only improve the brightness and color of the picture, but also save energy and prolong the service life of the organic light-emitting display, and since the white-light sub-pixel is a light-emitting material of at least one color necessary for synthesizing white light.
  • the basic sub-pixel is formed by laminating or mixing with another luminescent material of the necessary color, and at least the production process is compared with the prior art method of forming four pixels by using four small-open precision masks. The use of a precision mask once again reduces costs.
  • the influence of the luminescent material corresponding to the necessary color of the synthesized white light in the red sub-pixel on the display of red light can be eliminated. Make the red light of the illuminated organic display more precious.

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Abstract

提供了一种有机发光显示器及其制作方法，有机发光显示器包括：依序层叠的基板层（101）、第一电极层（102）、发光层（103）、第二电极层（104）；有机发光显示器在显示区域中包括多个主像素，每个主像素定义有至少三个子像素，其中一个子像素是白光子像素，剩余子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素；基本子像素包括本色区域和合光区域，合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成白光子像素。所提供的有机发光显示器能够提升画面的亮度和色彩度，节省能耗，延长有机发光显示器的使用寿命。

Description

有机发光显示器及其制作方法
【技术领域】
本发明涉及显示技术领域，具体是指一种有机发光显示器及其制作方法。
【背景技术】
伴随着液晶显示技术的飞速发展，各色各样的液晶显示器都得到了很好的发展。有机电致发光器件由于其高效率、高亮度、宽视角、低功耗、自发光、驱动电压低、响应速度快、全彩色、材料轻便、有柔性及易加工、适用于野外使用等特能满足当今信息时代对显示设备提出的更高性能和更大信息容量的要求，因此，成为了现在主要的显示技术之一。
传统的OLED显示器的一般采用红绿蓝三基色的三个子像素进行排列，为了得到白色的背景颜色，需要RGB三个子像素同时点亮才能调和成白色，这种方式明显比单纯的白光器件更耗电，增大了显示设备的能耗。
而采用一个像素区域内设置4个白光的W子像素的方式，虽然不需要通过同时点亮RGB三色子像素的方式就能得到白光，但是如果要形成RGB三色，就必须在盖板上贴合响应的红色滤光膜、蓝色滤光膜以及绿色滤光膜，这种方法在RGB子像素发出的光经过了3个滤光片，不可避免的导致了大量的光能量的损失，也增大了显示设备的能耗。
为了不使用滤光片，现有技术中还有一种通过在一个像素区域分别制备对应的WRGB子像素，虽然，减小了光经过滤光片带来的损失，但是，由于在制备子像素的过程中，WRGB或多更多的子像素，每一个都需要独立的掩模版来完成发光层是制备，而掩模版在制作、运输、清洗以及维护上都需要非常高昂的成本，并不利于OLED技术的发展。
【发明内容】
本发明提供一种有机发光显示器及其制作方法，以解决现有技术中有机发光显示器功耗大以及成本高的问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种有机发光显示器，所述有机发光显示器包括：依序层叠的基板层、第一电极层、发光层、第二电极层；所述显示器在发光区域中包括多个像素，每个像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少两个是包含合成白光所必要颜色的发光材料的基本子像素；至少两个所述基本子像素均包括本色区域和合光区域，所述至少两个所述基本子像素的合光区域中对应的合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素；其中，所有所述子像素的发光层之外的功能层不分区域地一体形成；所述基本子像素数量是三，分别是蓝色子像素、红色子像素、绿色子像素；所述蓝色子像素、红色子像素均包括本色区域和合光区域，所述蓝色子像素的本色区域和合光区域发光层相同，均是蓝色发光层，所述红色子像素中对应的合成白光所必要颜色的发光材料是黄色发光材料。
其中，包括仅对应所述红色子像素本色区域设置的用于仅通过红光的滤光层。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种有机发光显示器，所述有机发光显示器包括：
依序层叠的基板层、第一电极层、发光层、第二电极层；
所述显示器在显示区域中包括多个主像素，每个所述主像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素；
所述基本子像素包括本色区域和合光区域，所述合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
其中，所有所述子像素的发光层之外的功能层不分区域地一体形成。
其中，所述另一种合成白光所必要颜色的发光材料形成于对应所述白光子像素和一个所述基本子像素的区域。
其中，所述至少三个子像素中包括至少两个所述基本子像素，所述至少两个所述基本子像素的合光区域中对应的合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
其中，所述基本子像素数量是三，分别是蓝色子像素、红色子像素、绿色子像素；所述蓝色子像素、红色子像素均包括本色区域和合光区域，所述蓝色子像素的本色区域和合光区域发光层相同，均是蓝色发光层，所述红色子像素中对应的合成白光所必要颜色的发光材料是黄色发光材料。
其中，包括仅对应所述红色子像素本色区域设置的用于仅通过红光的滤光层
为了解决上述技术问题，本发明采用的再一个技术方案是：提供一种有机发光显示器，所述有机发光显示器包括：
依序层叠的基板层、第一电极层、发光层、第二电极层；
所述显示器在发光区域中包括多个像素，每个像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少两个是包含合成白光所必要颜色的发光材料的基本子像素；
至少两个所述基本子像素均包括本色区域和合光区域，所述至少两个所述基本子像素的合光区域中对应的合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
其中，所有所述子像素的发光层之外的功能层不分区域地一体形成。
其中，所述基本子像素数量是三，分别是蓝色子像素、红色子像素、绿色子像素；
所述蓝色子像素、红色子像素均包括本色区域和合光区域，所述蓝色子像素的本色区域和合光区域发光层相同，均是蓝色发光层，所述红色子像素中对应的合成白光所必要颜色的发光材料是黄色发光材料。
其中，包括仅对应所述红色子像素本色区域设置的用于仅通过红光的滤光层。
为了解决上述技术问题，本发明采用的又再一个技术方案是：提供一种有机发光显示器的制作方法，所述制作方法包括：
依序形成层叠基板层、第一电极层、发光层、第二电极层，以形成显示区域中包括多个主像素的显示面板；
其中，每个所述主像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素；
所述基本子像素包括本色区域和合光区域，所述合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
其中，所述形成发光层包括：
采用具有第一开口大小的精密掩膜板形成包含合成白光所必要颜色的发光材料的一个所述基本子像素，以及采用具有第二开口大小的精密掩膜板形成其余所述基本子像素，以及采用具有第三开口大小的精密掩膜板形成所述另一种合成白光所必要颜色的发光材料，并使其形成于对应所述白光子像素和所述一个基本子像素的区域；
其中，所述第一开口、第三开口大于所述第二开口。
其中，采用具有第四开口大小的精密掩膜板形成所有所述子像素的发光层之外的功能层，所述第四开口面积对应所述主像素的面积。
本发明的有益效果是：区别于现有技术的情况，本发明的有机发光显示器在显示区域中包括多个主像素，每个所述主像素定义有至少三个子像素，其中一个子像素是白光子像素，剩余子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素，子像素包括本色区域和合光区域，合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。通过上述方式，RGBW四像素的方式不仅能够提升画面的亮度和色彩度，有效节省能耗，延长有机发光显示器的使用寿命，而且由于白光子像素是由至少一种合成白光所必要颜色的发光材料的基本子像素与另一种必要颜色的发光材料层叠或混合而形成，在其制作工艺上与现有技术中通过四个小开口的精密掩模板形成四个像素的方式相比较，至少节省了一次精密掩模板的使用，再次降低了成本。
【附图说明】
图1是本发明有机发光显示器一实施方式的结构示意图；
图2A是本发明有机发光显示器显示区域主像素一实施方式的结构示意图；
图2B是本发明有机发光显示器显示区域主像素另一实施方式的结构示意图；
图2C是本发明有机发光显示器显示区域主像素另一实施方式的结构示意图；
图3是本发明有机发光显示器的制作方法一实施方式的流程示意图；
图4是本发明有机发光显示器的发光层制作方法一实施方式的流程示意图；
图5A是图4有机发光显示器的发光层制作方法一具体实施方式的结构示意图；
图5B是图4有机发光显示器的发光层制作方法另一具体实施方式的结构示意图；
图5C是图4有机发光显示器的发光层制作方法再一具体实施方式的结构示意图；
图5D是图3有机发光显示器的制作方法一具体实施方式的结构示意图。
【具体实施方式】
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、接口、技术之类的具体细节，以便透彻理解本申请。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施方式中也可以实现本申请。在其它情况中，省略对众所周知的装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
参阅图1，图1是本发明有机发光显示器一实施方式的结构示意图。
如图1所示，本实施方式的有机发光显示器包括依次设置的基板层101、第一电极层102、发光层103以及第二电极层104。
其中，该基板层101为透明基板，可以是玻璃基板也可以是柔性基板，其中柔性基板采用聚酯类、聚酰亚胺类化合物中的一种或多种材料制成。
第一电极层102以及第二电极层104分别为有机发光显示器的阳极层以及阴极层。
阳极层102可以采用无机材料或有机导电聚合物，其中无机材料为金属或金属氧化物，金属为功函数较高的金属，包括金、铜、银等，金属氧化物具体为氧化铟锡（ITO）、氧化锌、氧化锡锌等；有机导电聚合物为聚噻吩、聚乙烯基苯磺酸钠、聚苯胺中的一种材料。
阴极层104可以采用金属或者金属合金，其中金属为功函数较低的金属，包括锂、镁、钙、锶、铝、铟等，金属合金为功函数较低的金属合金或它们与金、银、铜的合金，还有其他实施例，采用金属与金属氟化物交替形成的阴极层，如氟化锂与金属银、氟化锂与金属铝形成的阴极层。
发光层103由发光材料和磷光发光掺杂剂制成在此不做限定。
由该基板层101、第一电极层102、发光层103以及第二电极层401形成的有机发光显示器的显示区域即发光层103包括多个主像素，每个主像素定义有至少三个子像素。为各个子像素的一部分。其中一个子像素是白光子像素，剩余子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素。基本子像素包括本色区域和合光区域，合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
在一个具体的实施方式中，如图2A所示，图2A为本发明有机发光显示器显示区域主像素一实施方式的结构示意图。该显示区域包括4个子像素，其中，W子像素 201为白光子像素。基本子像素的数量为3个，分别为蓝色子像素B子像素202，红色子像素R子像素203，以及绿色子像素G子像素204，其中，在其他实施方式中，上述白光子像素与三个基本子像素还可以为其他的呈现方式，如图2B所示的呈现形式，只需B子像素202以及R子像素203分别与W子像素 201相邻即可，在此不做限定。
其中，该红色子像素R子像素203包括本色区域红色区域以及和合光区域，其中，该合光区域中包括合成白光所必需的黄色的发光材料，具体地，该黄光的发光材料与同样位于W子像素 201相邻的蓝色子像素B子像素202的发光材料层叠或混合，由于蓝色的发光材料与黄色的发光材料在颜色上形成互补，可发射白光，因此，该W子像素 201与B子像素202的发光材料层叠或混合的区域，构成了该W子像素 201，以发出白光。
另外，蓝色子像素B子像素202除了与黄光的发光材料合成混合或层叠构成以发出白光，未与该黄光材料混合或层叠的区域依然为蓝色的发光材料，以发出蓝光。
另外，绿色子像素G子像素204的发光材料为绿色，以发出绿光。
另外，红色子像素R子像素的203的本色区域包括红色区域，即能发出红光。即通过对混合区域的设置以及蓝色子像素B子像素202除了与黄光的发光材料合成混合或层叠，能够在不额外增加成本的前提下实现4像素颜色的显示。
在另一个实施方式中，由于红色子像素R子像素的203合光区域的发光材料中包括合成白光所必需的黄色发光材料，为了使有机发光显示器的发出的红光尽可能的存粹，以避免黄色发光材料构成的发光层会部分覆盖红色光区域，本实施方式的有机发光显示器在其玻璃盖板对应的红色子像素R子像素的203的区域，即R子像素的本色区域贴合一层红色的滤光层2031，如图2C所示，其中，该红色滤光层2031仅能通过红光。
在另一个实施方式中，蓝色子像素也包括本色区域和合光区域，通过其合光区域的蓝色材料与红色子像素的合光区域的黄光材料层叠或混合，以构成该白光子像素，以发出白光。需要说明的是，该蓝色子像素的本色区域和合光区域的发光层相同，即发光材料相同，均为蓝色发光层。
在上述任一实施方式中，该有机发光显示器合成白光所必要的颜色的发光材料的一个基本子像素通过具有第一开口大小的精密掩模板形成，以形成红色子像素为例，先通过第一开口大小的精密掩模板形成合成白光所必要的黄色发光材料，在另一个实施方式中，在形成黄光发光材料的同时还形成红光发光材料及形成红色子像素本色显示的发光层。在其他实施方式中，该基本子像素还可以是蓝色子像素，在此不做限定。
该有机发光显示器的绿色基本子像素是通过具有第二开口大小的精密掩膜板所形成，其中，该精密掩膜板的第二开口小于上述的第一开口。
该有机发光显示器合成白光所必要的颜色的发光材料的另一个基本子像素通过具有第三开口大小的精密掩模板形成，其中，当第一开口大小的精密掩模板形成红色子像素时，该第三开口大小的精密掩模板形成蓝色子像素，而当第一开口大小的精密掩模板形成蓝色子像素时，该第三开口大小的精密掩模板形成红色色子像素，在此不做限定。其中，该第三开口也大于第二开口。
另外，在上述任一实施方式中，红色子像素对应区域的仅能通过红光的滤光层可通过喷墨打印或者其他方式对应形成在有机发光显示器的红色子像素本色区域对应的的盖板玻璃上。
需要说明的是，通过开口大小不同的精密掩模板形成种该有机玻璃显示器的各个子像素的的顺序并不限于上述方式，在其他实施方式中，也可以先通过具有第二开口大小的精密掩膜板形成绿色基本子像素，再分别通过具有第一开口大小的精密掩膜板形成合成白光所必要的黄色发光材料的红色子像素以及具有第三开口大小的精密掩膜板形成蓝色子像素，在此不做限定。
通过上述方式，相对与现有技术中通过四个小开口的精密掩模板形成四个像素的方式至少节省了一次精密掩模板的使用，降低了成本。
另外，在上述任一实施方式中，该有机发光显示器的上述至少三个子像素的发光层之外的功能层如共同使用的空穴注入层、空穴传输层、电子阻挡层、空穴阻挡层、电子传输层以及电子注入层的部分区域地一体形成。
其中，上述功能层是通过具有第四开口大小的精密掩膜板所形成的。该第四开口的面积对应主像素的面积。
区别于现有技术，本实施方式的有机发光显示器在显示区域中包括多个主像素，每个所述主像素定义有至少三个子像素，其中一个子像素是白光子像素，剩余子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素，子像素包括本色区域和合光区域，合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。通过上述方式，RGBW四像素的方式不仅能够提升画面的亮度和色彩度，有效节省能耗，延长有机发光显示器的使用寿命，而且由于白光子像素是由至少一种合成白光所必要颜色的发光材料的基本子像素与另一种必要颜色的发光材料层叠或混合而形成，在其制作工艺上与现有技术中通过四个小开口的精密掩模板形成四个像素的方式相比较，至少节省了一次精密掩模板的使用，再次降低了成本。
另外，通过合理控制子像素的结构，且通过对应红色子像素本色区域设置一个仅通过红光的滤光层，消除红色子像素中对应合成白光必要颜色的发光材料对显示红光的影响，能够使发光有机显示器的红光更加存粹。
参阅图3，图3是本发明有机发光显示器的制作方法一实施方式的流程示意图。本实施方式的制作方法包括如下步骤：
301：依序形成层叠基板层、第一电极层、发光层、第二电极层，以形成显示区域中包括多个主像素的显示面板。
其中，每个所述主像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素；
所述基本子像素包括本色区域和合光区域，所述合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
具体的，该基板层为透明基板，可以是玻璃基板也可以是柔性基板，其中柔性基板采用聚酯类、聚酰亚胺类化合物中的一种或多种材料制成。
第一电极层以及第二电极层分别为有机发光显示器的阳极层以及阴极层。
阳极层可以采用无机材料或有机导电聚合物，其中无机材料为金属或金属氧化物，金属为功函数较高的金属，包括金、铜、银等，金属氧化物具体为氧化铟锡（ITO）、氧化锌、氧化锡锌等；有机导电聚合物为聚噻吩、聚乙烯基苯磺酸钠、聚苯胺中的一种材料。
阴极层可以采用金属或者金属合金，其中金属为功函数较低的金属，包括锂、镁、钙、锶、铝、铟等，金属合金为功函数较低的金属合金或它们与金、银、铜的合金，还有其他实施例，采用金属与金属氟化物交替形成的阴极层，如氟化锂与金属银、氟化锂与金属铝形成的阴极层。
发光层由发光材料和磷光发光掺杂剂制成在此不做限定。
在一个具体的实施方式中，如图4所示，图4为本发明有机发光显示器的发光层制作方法一实施方式的流程示意图。该发光层制作方法包括如下步骤：
401：采用具有第一开口大小的精密掩膜板形成包含合成白光所必要颜色的发光材料的一个所述基本子像素。
具体地，该发光层组成的显示区域包括4个子像素，其中，W子像素为白光子像素。基本子像素的数量为3个，分别为蓝色子像素B子像素，红色子像素R子像素，以及绿色子像素G子像素，其中，四个子像素的呈现形式不做限定。只需B子像素以及R子像素分别与W子像素相邻即可，在此不做限定。
其中，该红色子像素R子像素包括本色区域红色区域以及和合光区域，其中，该合光区域中包括合成白光所必需的黄色的发光材料，具体地，该黄光的发光材料与同样位于W子像素相邻的蓝色子像素B子像素的发光材料层叠或混合，由于蓝色的发光材料与黄色的发光材料在颜色上形成互补，可发射白光，因此，该W子像素与B子像素的发光材料层叠或混合的区域，构成了该W子像素，以发出白光。
其中，该有机发光显示器合成白光所必要的颜色的发光材料的一个基本子像素通过具有第一开口大小的精密掩模板形成，如图5A所示，其中，Y为合成白光所必要的颜色的发光材料，以形成红色子像素为例，先通过第一开口大小的精密掩模板形成合成白光所必要的黄色发光材料，在另一个实施方式中，在形成黄光发光材料的同时还形成红光发光材料即形成红色子像素本色显示的发光层。在其他实施方式中，该基本子像素还可以是蓝色子像素，在此不做限定。
402：采用具有第二开口大小的精密掩膜板形成其余所述基本子像素。
具体地，该有机发光显示器的绿色基本子像素是通过具有第二开口大小的精密掩膜板所形成，如图5B所示，即形成绿色子像素G子像素，以发出绿光。
其中，该精密掩膜板的第二开口小于上述的第一开口。
403：采用具有第三开口大小的精密掩膜板形成所述另一种合成白光所必要颜色的发光材料，并使其形成于对应所述白光子像素和所述一个基本子像素的区域，如图5C所示。其中，所述第一开口、第三开口大于所述第二开口。
该有机发光显示器合成白光所必要的颜色的发光材料的另一个基本子像素通过具有第三开口大小的精密掩模板形成，其中，当第一开口大小的精密掩模板形成红色子像素时，该第三开口大小的精密掩模板形成蓝色子像素，而当第一开口大小的精密掩模板形成蓝色子像素时，该第三开口大小的精密掩模板形成红色色子像素，在此不做限定。其中，该第三开口也大于第二开口。
另外，蓝色子像素子像素除了与黄光的发光材料合成混合或层叠构成以发出白光，未与该黄光材料混合或层叠的区域依然为蓝色的发光材料，以发出蓝光。该显示蓝光的发光层是也是通过具有第三开口大小的精密掩膜板形成。
在另一个实施方式中，蓝色子像素也包括本色区域和合光区域，通过其合光区域的蓝色材料与红色子像素的合光区域的黄光材料层叠或混合，以构成该白光子像素，以发出白光。需要说明的是，该蓝色子像素的本色区域和合光区域的发光层相同，即发光材料相同，均为蓝色发光层。而该本色区域和合光区域均采用具有第三开口大小的精密掩膜板形成。
在上述任一实施方式中，由于红色子像素R子像素的合光区域的发光材料中包括合成白光所必需的黄色发光材料，为了使有机发光显示器的发出的红光尽可能的存粹，以避免黄色发光材料构成的发光层会部分覆盖红色光区域，本实施方式的有机发光显示器在其玻璃盖板对应的红色子像素R子像素的的区域，即R子像素的本色区域贴合一层红色的滤光层，该红色滤光层仅能通过红光。
其中，该红色子像素对应区域的仅能通过红光的滤光层可通过喷墨打印或者其他方式对应形成在有机发光显示器的红色子像素本色区域对应的的盖板玻璃上。
需要说明的是，通过开口大小不同的精密掩模板形成种该有机玻璃显示器的各个子像素的的顺序并不限于上述方式，在其他实施方式中，也可以先通过具有第二开口大小的精密掩膜板形成绿色基本子像素，再分别通过具有第一开口大小的精密掩膜板形成合成白光所必要的黄色发光材料的红色子像素以及具有第三开口大小的精密掩膜板形成蓝色子像素，在此不做限定。
通过上述方式，相对与现有技术中通过四个小开口的精密掩模板形成四个像素的方式至少节省了一次精密掩模板的使用，降低了成本。
302：采用具有第四开口大小的精密掩膜板形成所有所述子像素的发光层之外的功能层。
其中，第四开口面积对应所述主像素的面积，如图5D所示。
其中，该有机发光显示器的上述至少三个子像素的发光层之外的功能层如共同使用的空穴注入层、空穴传输层、电子阻挡层、空穴阻挡层、电子传输层以及电子注入层的部分区域地一体形成。
区别于现有技术，本实施方式的有机发光显示器在显示区域中包括多个主像素，每个所述主像素定义有至少三个子像素，其中一个子像素是白光子像素，剩余子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素，子像素包括本色区域和合光区域，合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。通过上述方式，RGBW四像素的方式不仅能够提升画面的亮度和色彩度，有效节省能耗，延长有机发光显示器的使用寿命，而且由于白光子像素是由至少一种合成白光所必要颜色的发光材料的基本子像素与另一种必要颜色的发光材料层叠或混合而形成，在其制作工艺上与现有技术中通过四个小开口的精密掩模板形成四个像素的方式相比较，至少节省了一次精密掩模板的使用，再次降低了成本。
另外，通过合理控制子像素的结构，且通过对应红色子像素本色区域设置一个仅通过红光的滤光层，消除红色子像素中对应合成白光必要颜色的发光材料对显示红光的影响，能够使发光有机显示器的红光更加存粹。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (11)

  1. 一种有机发光显示器，其中，所述有机发光显示器包括：
    依序层叠的基板层、第一电极层、发光层、第二电极层；
    所述显示器在发光区域中包括多个像素，每个像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少两个是包含合成白光所必要颜色的发光材料的基本子像素；
    至少两个所述基本子像素均包括本色区域和合光区域，所述至少两个所述基本子像素的合光区域中对应的合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素；
    其中，所有所述子像素的发光层之外的功能层不分区域地一体形成；
    所述基本子像素数量是三，分别是蓝色子像素、红色子像素、绿色子像素；
    所述蓝色子像素、红色子像素均包括本色区域和合光区域，所述蓝色子像素的本色区域和合光区域发光层相同，均是蓝色发光层，所述红色子像素中对应的合成白光所必要颜色的发光材料是黄色发光材料。
  2. 根据权利要求1所述的有机发光显示器，其中，
    包括仅对应所述红色子像素本色区域设置的用于仅通过红光的滤光层。
  3. 一种有机发光显示器，其中，所述有机发光显示器包括：
    依序层叠的基板层、第一电极层、发光层、第二电极层；
    所述有机发光显示器在显示区域中包括多个主像素，每个所述主像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素；
    所述基本子像素包括本色区域和合光区域，所述合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
  4. 根据权利要求3所述的有机发光显示器，其中，
    所有所述子像素的发光层之外的功能层不分区域地一体形成。
  5. 根据权利要求3所述的有机发光显示器，其中，
    所述另一种合成白光所必要颜色的发光材料形成于对应所述白光子像素和一个所述基本子像素的区域。
  6. 根据权利要求3所述的有机发光显示器，其中，
    所述至少三个子像素中包括至少两个所述基本子像素，所述至少两个所述基本子像素的合光区域中对应的合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
  7. 根据权利要求6所述的有机发光显示器，其中，
    所述基本子像素数量是三，分别是蓝色子像素、红色子像素、绿色子像素；
    所述蓝色子像素、红色子像素均包括本色区域和合光区域，所述蓝色子像素的本色区域和合光区域发光层相同，均是蓝色发光层，所述红色子像素中对应的合成白光所必要颜色的发光材料是黄色发光材料。
  8. 根据权利要求7所述的有机发光显示器，其中，
    包括仅对应所述红色子像素本色区域设置的用于仅通过红光的滤光层。
  9. 一种有机发光显示器的制作方法，其中，所述制作方法包括：
    依序形成层叠基板层、第一电极层、发光层、第二电极层，以形成显示区域中包括多个主像素的显示面板；
    其中，每个所述主像素定义有至少三个子像素，其中一个所述子像素是白光子像素，剩余所述子像素中的至少一个是包含合成白光所必要颜色的发光材料的基本子像素；
    所述基本子像素包括本色区域和合光区域，所述合光区域中对应的合成白光所必要颜色的发光材料与另一种合成白光所必要颜色的发光材料层叠或混合，以构成所述白光子像素。
  10. 根据权利要求9所述的制作方法，其中，所述形成发光层包括：
    采用具有第一开口大小的精密掩膜板形成包含合成白光所必要颜色的发光材料的一个所述基本子像素，以及采用具有第二开口大小的精密掩膜板形成其余所述基本子像素，以及采用具有第三开口大小的精密掩膜板形成所述另一种合成白光所必要颜色的发光材料，并使其形成于对应所述白光子像素和所述一个基本子像素的区域；
    其中，所述第一开口、第三开口大于所述第二开口。
  11. 根据权利要求10所述的制作方法，其中，进一步包括：
    采用具有第四开口大小的精密掩膜板形成所有所述子像素的发光层之外的功能层，所述第四开口面积对应所述主像素的面积。
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