WO2019184069A1 - Oled面板及其制作方法及oled显示装置 - Google Patents

Oled面板及其制作方法及oled显示装置 Download PDF

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Publication number
WO2019184069A1
WO2019184069A1 PCT/CN2018/087739 CN2018087739W WO2019184069A1 WO 2019184069 A1 WO2019184069 A1 WO 2019184069A1 CN 2018087739 W CN2018087739 W CN 2018087739W WO 2019184069 A1 WO2019184069 A1 WO 2019184069A1
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WO
WIPO (PCT)
Prior art keywords
rgb
substrate
color sub
pixels
organic light
Prior art date
Application number
PCT/CN2018/087739
Other languages
English (en)
French (fr)
Inventor
沈海洋
Original Assignee
武汉华星光电半导体显示技术有限公司
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 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/111,218 priority Critical patent/US10581030B2/en
Publication of WO2019184069A1 publication Critical patent/WO2019184069A1/zh

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Classifications

    • 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
    • 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
    • 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
    • H10K71/10—Deposition of organic active material
    • H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating

Definitions

  • the present application relates to the field of display panel manufacturing, in particular to an OLED panel, a method of fabricating the same, and an OLED display device.
  • OLED Organic Light-Emitting diode
  • LCD liquid crystal display
  • Active OLED Active Matrix OLED
  • AMOLED Active Matrix OLED
  • AMOLED is driven by a method of integrating a thin film transistor (TFT) and a capacitor in each pixel and maintaining a voltage by a capacitor, thereby realizing a large-sized, high-resolution panel. The focus of current research and the future direction of display technology.
  • the technical problem to be solved by the present application is to provide an OLED panel, a manufacturing method thereof and an OLED display device, which improve the utilization ratio of the organic light-emitting paint forming the sub-pixel, simplify the production process and cycle, and improve the production efficiency.
  • the organic light emitting diode OLED display panel includes: a substrate and a plurality of sequentially arranged RGB three colors formed on the substrate a sub-pixel, wherein the plurality of sequentially arranged RGB three-color sub-pixels are obtained by speed-rotating printing in which a roller having a plurality of RGB liquid outlets is provided on the surface to follow the movement of the substrate; the plurality of RGB liquid discharges
  • the arrangement in the mouth is the same as the arrangement of the RGB three-color sub-pixels on the substrate at least one cycle.
  • the manufacturing method of the panel comprises: preparing a substrate; forming a plurality of sequentially arranged RGB three colors on the substrate by a roller having a plurality of RGB liquid outlets on the surface following the speed of the substrate moving and rotating the corresponding organic light-emitting paint a sub-pixel; the arrangement of the plurality of RGB liquid outlets is the same as the arrangement of the RGB three-color sub-pixels of the at least one period on the substrate.
  • an OLED panel manufacturing apparatus including: a drum, the outer wall of the drum is provided with a plurality of RGB liquid outlets, and the plurality of RGB liquid outlets Arranging in the same manner as RGB three-color sub-pixels on at least one period of the substrate of the OLED display panel, the drum rotating at a speed following the movement of the substrate to print a plurality of sequentially arranged RGB on the substrate Three-color sub-pixel.
  • the present application proposes an organic light emitting diode OLED display panel, wherein sub-pixels on the substrate are formed by rotary printing when the following substrate is moved by the roller, wherein the surface of the roller is provided with At least one cycle of sub-pixels on the substrate are arranged in the same liquid outlet, and the liquid outlet is used to form sub-pixels, and the RGB three-color sub-pixels can be printed at one time.
  • the application can improve the utilization rate of the organic light-emitting paint forming the sub-pixel, simplify the production process and cycle, and improve the production efficiency.
  • FIG. 1 is a schematic structural view of an embodiment of an OLED display panel of the present application.
  • Figure 2 is a schematic view showing the structure of a secondary pipe connecting the liquid outlet of the drum of Figure 1;
  • FIG. 3 is a schematic flow chart of an implementation method of a method for fabricating an OLED panel of the present application
  • FIG. 4 is a schematic structural view of an embodiment of an OLED panel manufacturing apparatus of the present application.
  • Figure 5 is a schematic view showing the structure of a secondary pipe connecting the liquid outlet of the drum of Figure 4;
  • OLEDs in the present application are abbreviated as an organic light emitting diode.
  • OLED display panel in the present application is simply referred to as an OLED display panel.
  • FIG. 1 is a schematic structural diagram of an embodiment of an OLED display panel of the present application.
  • the OLED display panel of this embodiment includes a substrate 101 for fabricating an OLED
  • the panel is provided with a plurality of RGB three-color sub-pixels (not labeled) arranged in sequence on the substrate 101.
  • the substrate 101 may be a glass substrate or a plastic film substrate and other substrates that can be used to form RGB three-color sub-pixels arranged in sequence, which is not limited herein.
  • the RGB three-color sub-pixel on the substrate 101 is formed by disposing the substrate 101 under the drum 102, and when the substrate 101 is moved, the drum 102 is rotated in the moving direction of the substrate 101 to form a relief printing.
  • the drum 102 is fixed at a certain position and rotates along the axis of the drum 102, and the two opposite sides of the substrate 101 are respectively aligned with the two sides of the drum 102.
  • the substrate 101 is moved in a direction perpendicular to the other two sides, and the substrate 101 is always present with at least a portion in contact with the drum 102.
  • the substrate 101 when the sub-pixels on the substrate 101 are formed, the substrate 101 may be fixed under the drum 102 without moving, and the roller 102 may form RGB on the substrate 101 in a direction perpendicular to a certain side of the substrate 101. Three-color sub-pixel.
  • a plurality of sequentially arranged RGB three-color sub-pixels on the substrate 101 are formed by an organic light-emitting paint, and the liquid organic light-emitting paint is sprayed onto the substrate 101 to form RGB three-color sub-pixels, and is disposed on the drum 102.
  • the drum 102 rotates, the liquid outlet is in contact with the substrate 101, and the organic light-emitting paint is sprayed onto the substrate 101.
  • a plurality of sequentially arranged RGB three-color sub-pixels are formed.
  • the arrangement of the RGB liquid outlets on the drum 102 is the same as that of the RGB three-color sub-pixels on the substrate at least one cycle.
  • an alignment device (not labeled) needs to be disposed.
  • the alignment device is configured to control the liquid outlet on the drum 102 to correspond to the position of the sub-pixel formed on the substrate 101 of the liquid outlet, so that the liquid outlet is sprayed with the organic light-emitting paint. It can fall at the position of the preset sub-pixel to form a preset sub-pixel.
  • the alignment device can be a high-precision alignment system such as a charge-coupled device (CCD) alignment system and a registration platform, as long as the alignment device can realize the organic light-emitting paint that controls the ejection of the liquid outlet
  • CCD charge-coupled device
  • the alignment device can realize the organic light-emitting paint that controls the ejection of the liquid outlet
  • the position of the corresponding preset sub-pixel on the substrate 101 is sufficient, and is not limited herein.
  • the RGB liquid outlet size on the drum 102 is adjusted according to the corresponding RGB three-color sub-pixel preset pixel size on the substrate 101.
  • the present application controls the size of the sub-pixel formed on the substrate 101 by controlling the flow rate of the liquid outlet by the cooperation of the flow meter and the pressure limiting valve.
  • the viscosity of the formed organic luminescent coating is also different. Under the same flow rate, the sub-pixel size formed by the organic luminescent coatings of different viscosities is also different. Therefore, it is necessary to control the liquid discharge.
  • the viscosity change curve corresponding to the organic luminescent paint sprayed by the different color outlets is obtained before the mouth flow.
  • a flow meter 104, a controller 105, a voltage limiter 106, and a red organic light-emitting paint are further disposed on the pipe 103 for conveying the organic light-emitting paint for forming the red sub-pixel.
  • Storage device 107 a flow meter 104, a controller 105, a voltage limiter 106, and a red organic light-emitting paint are further disposed on the pipe 103 for conveying the organic light-emitting paint for forming the red sub-pixel.
  • the pipe 103 conveys the red organic luminescent paint stored in the red organic luminescent paint storage device 107 to the red organic luminescent paint liquid outlet on the drum 102.
  • the valve 102 is provided with a valve (not shown).
  • the flowmeter 104 can be an anti-corrosion flowmeter, a differential pressure flowmeter, an ammonia flowmeter, a turbine flowmeter, an electromagnetic flowmeter, a vortex flowmeter in a fluid oscillation flowmeter, a mass flowmeter, and an SST plug-in flowmeter. Any one of the devices that can measure the flow rate of the organic luminescent paint in the pipe 103 is not limited herein.
  • the controller 105 acquires the flow rate data transmitted by the flow meter, and determines whether it is necessary to control the injection amount of the liquid outlet according to the red sub-pixel size corresponding to the liquid outlet connected to the pipe 103 and the viscosity change curve corresponding to the delivered organic light-emitting paint. . If so, the controller 105 sends a command to control the red organic light-emitting paint in the pipe 103 to the pressure limiting valve 106, and the pressure limiting valve 106 receives an instruction to adjust the pressure in the pipe 103 according to the command, thereby controlling the red organic light emission of the liquid outlet. Paint flow rate.
  • the flow meter 104, the controller 105 and the pressure limiting valve 106 may be jointly disposed in the same device, or may be divided into several different devices, and the three functions may be combined or split according to requirements. It is only necessary to be able to realize the flow rate of the organic luminescent paint in the detection pipe 103, and according to the flow rate and the preset viscosity change curve, the pressure in the pipe 103 is changed, thereby changing the injection amount of the organic luminescent paint at the liquid outlet, that is, the outlet flow rate. Yes, I won't go into details here.
  • the present application also provides a rotating shaft (not shown) on the drum 102, the two ends of which are connected to the pipe 103 and the drum 102, respectively, wherein one end connected to the pipe 103 is fixed and the other end is rotatable with the drum 102.
  • the rotating shaft serves to prevent the pipe 103 from being affected when the drum 102 rotates, causing the organic luminescent paint in the pipe 103 to leak.
  • the connecting pipe 103 and the drum 102 may be other devices that can prevent the pipe 103 from being affected by the rotation of the drum 102 and prevent the organic luminescent paint from leaking, which is not limited herein.
  • the organic light-emitting paint may also be four colors of RGBW. Therefore, the sub-pixels formed on the substrate 101 are four colors of RGBW, and the liquid outlets on the drum 102 are arranged corresponding to the arrangement of the sub-pixels on the substrate 101. It will not be described in detail here.
  • the drum 102 is provided with a plurality of liquid outlets for spraying the red organic light-emitting paint
  • the liquid outlets and the pipes 103 are used to better convey the organic light-emitting paint in the pipes to the liquid outlet, and only in the When the liquid outlet is in contact with the substrate 101, the liquid outlet sprays the organic light-emitting paint.
  • a plurality of secondary pipes (not shown) connecting the liquid outlet port and the pipe 103 are provided on the drum 102.
  • the present application proposes an organic light emitting diode OLED display panel, wherein sub-pixels on the substrate are formed by rotary printing when the following substrate is moved by the roller, wherein the surface of the roller is provided with At least one cycle of sub-pixels on the substrate are arranged in the same liquid outlet, and the liquid outlet is used to form sub-pixels, and the RGB three-color sub-pixels can be printed at one time.
  • the application can improve the utilization rate of the organic light-emitting paint forming the sub-pixel, simplify the production process and cycle, and improve the production efficiency.
  • FIG. 2 is a schematic structural view of an embodiment of the secondary pipe connecting the liquid outlet on the drum of FIG.
  • the end of one end of the secondary duct 201 is an arcuate structure 202 whose end is connected to the liquid outlet on the drum.
  • the connection line of the secondary pipe 201 connected through the curved structure is perpendicular to the cross section of the drum, and the connection manner is The liquid outlet connected to the secondary pipe 201 acquires and ejects the organic light-emitting paint at the same time.
  • the other end of the secondary pipe 201 is connected to the secondary pipes 203, 204 which also convey the red organic light-emitting paint, and is connected to the pipe 103 in common, wherein the secondary pipes 203, 204 are connected to the liquid outlet in the same manner and arranged. I will not repeat them here.
  • a valve for controlling the conduction of the secondary pipe is provided on the secondary pipe, and the valve is connected to the secondary pipe.
  • the secondary pipe is controlled to be electrically connected, so that the liquid outlet can communicate with the pipe 103 and spray the organic luminescent paint.
  • the secondary pipes 201, 203, 204 for conveying the red organic luminescent paint there are secondary pipes (not labeled) for conveying the green and blue organic luminescent paints, wherein the secondary pipes are transported.
  • the secondary pipes 201, 203, and 204 of the red organic luminescent paint are arranged in the same manner, and are not described herein.
  • the organic light-emitting paint may also be four colors of RGBW. Therefore, the sub-pixels formed on the substrate are four colors of RGBW, and the arrangement and connection manner of the secondary pipes on the drum are also correspondingly disposed, which will not be described in detail herein.
  • the present application also proposes an OLED display device comprising the OLED display panel as described above.
  • the OLED display device may be a smart terminal such as a computer, a mobile phone, or a wearable device, or may be a display device such as a car meter, a self-service terminal, a television, a billboard, etc., and the display device only has the above
  • the display device of the OLED display panel is not limited herein.
  • FIG. 3 is a schematic flow chart of an implementation method of the OLED panel of the present application.
  • the substrate may be a glass substrate or a plastic film substrate and the other may be used to fabricate an OLED.
  • a panel, and a plurality of substrates of RGB three-color sub-pixels arranged in sequence may be formed, which is not limited herein.
  • S302 forming, by a roller having a plurality of RGB liquid outlets on the surface, a plurality of sequentially arranged RGB three-color sub-pixels on the substrate by following a speed-rotating spray corresponding organic light-emitting paint that moves the substrate; the plurality of RGB The arrangement in the liquid outlet is the same as the arrangement of the RGB three-color sub-pixels on the substrate at least one cycle.
  • the substrate is disposed under the drum, wherein the two opposite sides of the substrate are aligned with the two sides of the drum, respectively.
  • the substrate is moved in a direction perpendicular to the other two sides, and the substrate is always present with at least a portion in contact with the roller.
  • the drum follows the substrate for rotational movement, and the direction in which the drum rotates is the direction in which the substrate moves.
  • a plurality of RGB liquid outlets are provided on the drum, and the liquid outlets are arranged in the same manner as the RGB three-color sub-pixels on the substrate at least one cycle.
  • the liquid outlet on the drum contacting the substrate sprays the organic light-emitting paint onto the corresponding sub-pixel on the substrate, thereby forming a plurality of sequentially arranged RGB three-color sub-pixels.
  • the RGB three-color sub-pixel on the substrate is formed by disposing a substrate under the drum 102.
  • the drum is formed by the printing of the substrate in a moving direction, wherein the roller is fixed at a certain position. Rotate along the axis of the drum.
  • the RGB three-color sub-pixels may be formed in a rolling manner in the direction in which the substrate extends along the substrate without moving the substrate under the drum.
  • an alignment device (not labeled) needs to be disposed.
  • the alignment device is configured to control the liquid outlet on the drum to correspond to the position of the sub-pixel formed on the substrate by the liquid outlet, so that the organic light-emitting paint can fall when the liquid outlet is sprayed with the organic light-emitting paint.
  • the preset sub-pixels are located to form preset sub-pixels.
  • the alignment device can be a high-precision alignment system such as a CCD alignment system and a registration platform, as long as the alignment device can realize a corresponding preset sub-pixel on which the organic light-emitting paint that controls the ejection of the liquid outlet falls on the substrate
  • the location is OK and is not limited here.
  • the size of the liquid outlet on the drum is adjusted according to the preset pixel size of the corresponding three-color sub-pixel on the substrate.
  • the present application controls the flow rate of the liquid outlet by the cooperation of the flow meter and the pressure limiting valve, thereby realizing the size of the sub-pixel formed on the substrate.
  • the viscosity of the formed organic luminescent coating is also different. Therefore, at the same flow rate, the flow rates of the organic luminescent coatings of different viscosities are correspondingly different, and it is necessary to control the flow rate of the liquid outlet.
  • the corresponding viscosity change curve of the organic light-emitting paint sprayed by the different color outlets is obtained before, wherein the viscosity change curve is a time-varying curve of the organic light-emitting paint.
  • a flow meter, a controller, a pressure limiter, and a red organic light-emitting paint storage device are further disposed on the pipe for conveying the organic light-emitting paint for forming the red sub-pixel.
  • the pipe conveys the red organic luminescent paint stored in the red organic luminescent paint storage device to the red organic luminescent paint liquid outlet on the drum.
  • the valve is provided with a valve (not shown).
  • the flow rate of the organic light-emitting paint of the liquid outlet is controlled by the flow meter, and the flow meter detects the flow rate of the red organic light-emitting paint in the pipeline, and transmits the data to the controller.
  • the flow meter can be an anti-corrosion flowmeter, a differential pressure flowmeter, an ammonia flowmeter, a turbine flowmeter, an electromagnetic flowmeter, a vortex flowmeter in a fluid oscillation flowmeter, a mass flowmeter, and an SST plug-in flowmeter. Any of the devices that can measure the flow rate of the organic light-emitting paint in the pipe is not limited herein.
  • the controller acquires the flow data transmitted by the flowmeter, and determines whether it is necessary to control the injection amount of the liquid outlet according to the red sub-pixel size corresponding to the liquid outlet connected to the pipeline and the viscosity change curve corresponding to the delivered organic light-emitting paint. If so, the controller sends a command to control the red organic luminescent paint in the conduit 103 to the pressure limiting valve, and the pressure limiting valve receives the command to adjust the pressure in the conduit according to the command to control the flow rate of the red organic luminescent paint at the outlet.
  • the flow meter, the controller and the pressure limiting valve can be jointly arranged in the same device, or can be divided into several different devices, and the three functions can be combined or split according to requirements, only need to be able to Realizing the flow rate of the organic luminescent paint in the detection pipeline, and changing the pressure in the pipeline according to the flow rate and the preset viscosity change curve, thereby changing the injection amount of the organic luminescent paint at the liquid outlet, that is, the outlet flow rate, Do not repeat them.
  • the application also has a rotating shaft (not shown) on the drum, the two ends of which are respectively connected to the pipe and the drum, wherein one end connected to the pipe is fixed and the other end can rotate with the drum.
  • the rotating shaft is used to prevent the pipe from being affected when the drum rotates, and the organic luminescent paint in the pipe is leaked.
  • the connecting pipe and the drum may be other devices that can prevent the pipe from being affected by the rotation of the drum and prevent the organic light-emitting paint from leaking, which is not limited herein.
  • the organic light-emitting paint may also be four colors of RGBW. Therefore, the sub-pixels formed on the substrate are four colors of RGBW, and the liquid outlet on the drum is disposed corresponding to the arrangement of the sub-pixels on the substrate, and is not provided here. Detailed.
  • the drum is provided with a plurality of liquid outlets for spraying red organic light-emitting paint
  • the liquid outlets and pipes are used to better convey the organic light-emitting paint in the pipeline to the liquid outlet, and only in the liquid outlet.
  • the liquid outlet sprays the organic light-emitting paint.
  • a plurality of secondary pipes connecting the liquid outlet and the pipeline are also disposed on the drum.
  • the end of one end of the secondary pipe is an arc structure, and the end of the arc structure is connected to the liquid outlet on the drum.
  • the connection line of the secondary pipe connected through the curved structure is perpendicular to the cross section of the drum, and the connection manner is such that The liquid outlet of the secondary pipe connection acquires and ejects the organic light-emitting paint at the same time.
  • the other end of the secondary pipe is connected to the secondary pipe which also conveys the red organic light-emitting paint, and is connected to the pipe.
  • the connection mode and arrangement of the secondary pipe and the liquid outlet are the same, and will not be described here.
  • a valve for controlling the conduction of the secondary pipe is also provided on the secondary pipe, and the valve is in contact with the substrate at the liquid outlet communicating with the secondary pipe.
  • the secondary pipe is controlled to conduct, so that the liquid outlet can communicate with the pipe and spray the organic luminescent paint.
  • the organic light-emitting paint may also be four colors of RGBW. Therefore, the sub-pixels formed on the substrate are four colors of RGBW, and the arrangement and connection manner of the secondary pipes on the drum are also correspondingly disposed, which will not be described in detail herein.
  • the application of the present application is different from the prior art.
  • the present application provides a method for fabricating an OLED display panel.
  • Sub-pixels on the substrate are formed by rotary printing when the substrate is moved by the roller, wherein the surface of the roller is disposed with the substrate.
  • the liquid discharge port having the same sub-pixel arrangement in at least one cycle is used to form a sub-pixel, and the RGB three-color sub-pixel can be printed at one time.
  • the application can improve the utilization rate of the organic light-emitting paint forming the sub-pixel, simplify the production process and cycle, and improve the production efficiency.
  • FIG. 4 is an OLED of the present application.
  • the manufacturing device includes a drum 402, a pipe 403, a flow meter 404, a controller 405, a pressure limiting valve 406, and an organic luminescent paint storage device 407.
  • the OLED The panel making apparatus is for ejecting the organic light-emitting paint onto the substrate 401 by letterpress printing while forming a plurality of sequentially arranged RGB three-color sub-pixels (not shown).
  • the substrate 401 may be a glass substrate or a plastic film substrate and other substrates that can be used to form RGB three-color sub-pixels arranged in sequence, which is not limited herein.
  • the RGB three-color sub-pixel on the substrate 401 is formed by placing the substrate 401 under the drum 402, and when the substrate 401 is moved, the drum 402 is rotated in the moving direction of the substrate 401 to form a relief printing.
  • the drum 402 is fixed at a certain position and rotates along the axis of the drum 402, and the two opposite sides of the substrate 401 are respectively aligned with the two sides of the drum 402.
  • the substrate 401 is moved in a direction perpendicular to the other two sides, and the substrate 401 is always present with at least a portion in contact with the drum 402.
  • the substrate 401 when the sub-pixels on the substrate 401 are formed, the substrate 401 may be fixed under the roller 402 without moving, and the roller 402 may be formed on the substrate 401 in a direction perpendicular to a certain side of the substrate 401.
  • RGB three-color sub-pixel when the sub-pixels on the substrate 401 are formed, the substrate 401 may be fixed under the roller 402 without moving, and the roller 402 may be formed on the substrate 401 in a direction perpendicular to a certain side of the substrate 401.
  • a plurality of sequentially arranged RGB three-color sub-pixels on the substrate 401 are formed by an organic light-emitting paint.
  • the drum 402 is disposed on the drum 402. There are three organic light-emitting paint outlets (not shown) of RGB protruding from the plane of the drum 402. When the drum 402 rotates, the liquid outlet is in contact with the substrate 401, and the organic light-emitting paint is sprayed onto the substrate 401.
  • a plurality of sequentially arranged RGB three-color sub-pixels are formed.
  • the arrangement of the RGB liquid outlets on the drum 402 is the same as the arrangement of the RGB three-color sub-pixels on the substrate at least one cycle.
  • the alignment device is configured to control the liquid outlet on the drum 402 to correspond to the position of the sub-pixel formed on the substrate 401 of the liquid outlet, so that the liquid outlet is sprayed with the organic light-emitting paint. It can fall at the position of the preset sub-pixel to form a preset sub-pixel.
  • the alignment device can be a high-precision alignment system such as a CCD alignment system and a registration platform, as long as the alignment device can realize a corresponding preset sub-pixel on which the organic light-emitting paint that controls the ejection of the liquid outlet falls on the substrate 401.
  • the location is OK and is not limited here.
  • the RGB liquid outlet size on the drum 402 is adjusted according to the corresponding RGB three-color sub-pixel preset pixel size on the substrate 401.
  • the present application controls the size of the sub-pixel formed on the substrate 401 by controlling the flow rate of the liquid outlet by the cooperation of the flow meter and the pressure limiting valve.
  • the viscosity of the formed organic luminescent coating is also different. Under the same flow rate, the sub-pixel size formed by the organic luminescent coatings of different viscosities is also different. Therefore, it is necessary to control the liquid discharge.
  • the viscosity change curve corresponding to the organic light-emitting paint sprayed by the different color outlets is preset before the mouth flow.
  • a flow meter 404 a controller 405, a voltage limiter 406, and a red organic light-emitting paint are further disposed on the pipe 403 for conveying the organic light-emitting paint for forming the red sub-pixel.
  • the conduit 403 delivers the red organic luminescent coating stored by the red organic luminescent coating storage device 407 to the red organic luminescent coating liquid outlet on the drum 402.
  • a valve (not labeled) is disposed on the drum 402.
  • the flow rate of the organic light-emitting paint of the liquid outlet is controlled by the flow meter 404, and the flow meter 404 detects the flow rate of the red organic light-emitting paint in the pipe 403, and transmits the data to the controller 405.
  • the flow meter 404 can be an anti-corrosion flowmeter, a differential pressure flowmeter, an ammonia flowmeter, a turbine flowmeter, an electromagnetic flowmeter, a vortex flowmeter in a fluid oscillation flowmeter, a mass flowmeter, and an SST plug-in flowmeter. Any one of the devices that can measure the flow rate of the organic luminescent paint in the pipe 403 is not limited herein.
  • the controller 405 acquires the flow data transmitted by the flowmeter, and determines whether it is necessary to control the injection amount of the liquid outlet according to the red sub-pixel size corresponding to the liquid outlet connected to the pipe 403 and the viscosity change curve corresponding to the delivered organic light-emitting paint. . If so, the controller 405 sends a command to control the red organic luminescent paint in the pipe 403 to the pressure limiting valve 406, and the pressure limiting valve 406 receives the command, and adjusts the pressure in the pipe 403 according to the command, thereby controlling the red organic light emission of the liquid outlet. Paint flow rate.
  • the flow meter 404, the controller 405 and the pressure limiting valve 406 may be jointly disposed in the same device, or may be divided into several different devices, and the three functions may be combined or split according to requirements. It is only necessary to realize the flow rate of the organic luminescent paint in the detection pipe 403, and according to the flow rate and the preset viscosity change curve, the pressure in the pipe 403 is changed, thereby changing the injection amount of the organic luminescent paint at the liquid outlet, that is, the outlet flow rate. Yes, I won't go into details here.
  • the present application also provides a rotating shaft (not shown) on the drum 402. Both ends of the rotating shaft are connected to the pipe 403 and the drum 402, respectively, wherein one end connected to the pipe 403 is fixed and the other end is rotatable with the drum 402.
  • the rotating shaft serves to prevent the pipe 403 from being affected when the drum 402 is rotated, causing the organic luminescent paint in the pipe 403 to leak.
  • the connecting pipe 403 and the drum 402 may also be other devices that can prevent the pipe 403 from being affected by the rotation of the drum 402 and prevent the organic luminescent paint from leaking, which is not limited herein.
  • the organic light-emitting paint may also be four colors of RGBW. Therefore, the sub-pixels formed on the substrate 401 are four colors of RGBW, and the liquid outlets on the drum 402 are arranged corresponding to the arrangement of the sub-pixels on the substrate 401. It will not be described in detail here.
  • the drum 402 is provided with a plurality of liquid outlets for spraying the red organic light-emitting paint
  • the liquid outlets and the pipes 403 are used to better convey the organic light-emitting paint in the pipes to the liquid outlet, and only in the When the liquid outlet is in contact with the substrate 401, the liquid outlet sprays the organic light-emitting paint.
  • a plurality of secondary ducts (not shown) connecting the liquid outlet and the duct 403 are also provided on the drum 402.
  • FIG. 5 is a schematic structural view of an embodiment of the secondary pipe connecting the liquid outlet on the drum of FIG.
  • the end of one end of the secondary duct 501 is an arcuate structure 502 whose end is connected to the liquid outlet on the drum.
  • the connection line of the secondary pipe 501 connected through the curved structure is perpendicular to the cross section of the drum, and the connection manner is The liquid outlet connected to the secondary pipe 501 acquires and ejects the organic light-emitting paint at the same time.
  • the other end of the secondary pipe 501 is connected to the secondary pipes 503, 504 which also convey the red organic luminescent paint, and is connected to the pipe 403 in common, wherein the secondary pipes 503, 504 are connected to the liquid outlet in the same manner and arranged. I will not repeat them here.
  • a valve for controlling the conduction of the secondary pipe is provided on the secondary pipe, and the valve is connected to the secondary pipe.
  • the secondary pipe is controlled to be electrically connected, so that the liquid outlet can communicate with the pipe 503, and the organic light-emitting paint is sprayed.
  • the organic light-emitting paint may also be four colors of RGBW. Therefore, the sub-pixels formed on the substrate are four colors of RGBW, and the arrangement and connection manner of the secondary pipes on the drum are also correspondingly disposed, which will not be described in detail herein.
  • the application of the present application is different from the prior art.
  • the present application provides an OLED display panel manufacturing apparatus.
  • Sub-pixels on a substrate are formed by rotary printing when the substrate is moved by the roller, wherein the surface of the roller is provided with a substrate.
  • the liquid discharge port having the same sub-pixel arrangement in at least one cycle is used to form a sub-pixel, and the RGB three-color sub-pixel can be printed at one time.
  • the application can improve the utilization rate of the organic light-emitting paint forming the sub-pixel, simplify the production process and cycle, and improve the production efficiency.

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  • Electroluminescent Light Sources (AREA)

Abstract

一种OLED面板及其制作方法及OLED显示装置。OLED面板包括：基板（101）以及形成在所述基板（101）上的多个依次排列的RGB三色子像素，其中，所述多个依次排列的RGB三色子像素是通过表面设置有多个RGB出液口的滚筒（102）跟随所述基板（101）移动的速度旋转印刷而得到的；所述多个RGB出液口中的排布方式与所述基板（101）上至少一个周期的RGB三色子像素的排布方式相同。通过以凸版印刷的方式将RGB三色子像素同时印刷在基板（101）上，最大限度提升形成子像素的有机发光涂料的利用率，简化生产流程及周期，提高了生产效率。

Description

OLED面板及其制作方法及OLED显示装置
【技术领域】
本申请涉及显示面板制造领域，特别是OLED面板及其制作方法及OLED显示装置。
【背景技术】
在平板显示技术中，有机发光二极管（Organic Light-Emitting Diode，OLED）显示器以其轻薄、主动发光、响应速度快、广视角、色彩丰富及高亮度、低功耗、耐高低温等众多优点而被业界公认为是继液晶显示器（LCD）之后的第三代显示技术。主动式OLED（Active Matrix OLED，AMOLED）也称为有源矩阵OLED，AMOLED因通过在每个像素中集成薄膜晶体管（TFT）和电容器并由电容器维持电压的方法进行驱动，因而可以实现大尺寸、高分辨率面板，是当前研究的重点及未来显示技术的发展方向。
在现有技术中，行业大部分采用通过蒸镀技术在OLED 面板上形成子像素。但是，蒸镀技术需要多道复杂工序才能形成合格面板，而且该技术需要配套设备用于制作网版，配套设备投入大，制作工艺相对复杂，网版品质难以控制，在蒸镀技术中还需要对面板进行清洗制成，这也需要一个专门的清洗机器，清洗制成也相当复杂。复杂的多道工序，网版品质难以控制，清洗制成复杂，这些问题造成了以蒸镀技术在基板上形成子像素得到的产品良品率低，形成子像素的有机发光涂料的利用率低，生产周期长，且生产效率无法提高，对OLED 面板大规模生产影响很大。
【发明内容】
本申请主要解决的技术问题是提供一种OLED面板及其制作方法及OLED显示装置，提升形成子像素的有机发光涂料的利用率，简化生产流程及周期，提高了生产效率。
为解决上述技术问题，本申请采用的一个技术方案是：提供一种有机发光二极管OLED显示面板，有机发光二极管OLED显示面板包括：基板以及形成在所述基板上的多个依次排列的RGB三色子像素，其中，所述多个依次排列的RGB三色子像素是通过表面设置有多个RGB出液口的滚筒跟随所述基板移动的速度旋转印刷而得到的；所述多个RGB出液口中的排布方式与所述基板上至少一个周期的RGB三色子像素的排布方式相同。
为解决上述技术问题，本申请采用的再一个技术方案是：提供一种OLED 面板的制作方法，包括：准备基板；通过表面设置有多个RGB出液口的滚筒跟随所述基板移动的速度旋转喷射对应的有机发光涂料在所述基板上形成多个依次排列的RGB三色子像素；所述多个RGB出液口中的排布方式与所述基板上至少一个周期的RGB三色子像素的排布方式相同。
为解决上述技术问题，本申请采用的又一个技术方案是：提供一种OLED面板制作装置，包括：滚筒，所述滚筒外壁设有多个RGB出液口，所述多个RGB出液口中的排布方式与OLED显示面板的基板上至少一个周期的RGB三色子像素的排布方式相同，所述滚筒跟随所述基板移动的速度旋转以在所述基板上印刷得到多个依次排列的RGB三色子像素。
本申请的有益效果是：区别于现有技术的情况，本申请提出一种有机发光二极管OLED显示面板，基板上的子像素通过滚筒在跟随基板移动时旋转印刷形成，其中，滚筒表面设置有与基板上至少一个周期的子像素排列方式相同的出液口，该出液口用于形成子像素，可以使RGB三色子像素一次印刷成型。本申请能够提升形成子像素的有机发光涂料的利用率，简化生产流程及周期，提高了生产效率。
【附图说明】
图1是本申请OLED显示面板一实施例的结构示意图；
图2是图1滚筒上连接出液口的次级管道一实施例的结构示意图；
图3是本申请OLED 面板的制作方法一实施的流程示意图；
图4是本申请OLED 面板制作装置一实施例的结构示意图；
图5是图4滚筒上连接出液口的次级管道一实施例的结构示意图。
【具体实施方式】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，均属于本申请保护的范围。
需要说明说的是，本申请中所有的OLED均为有机发光二极管的英文简写，为了描述方便，本申请中有机发光二极管OLED显示面板均简称为OLED显示面板。
请参阅图1，图1是本申请OLED显示面板一实施例的结构示意图。
本实施例的OLED显示面板包括基板101，该基板101用于制作OLED 面板，且基板101上设有多个依次排列的RGB三色子像素（未标示）。
在本实施例中，基板101可为玻璃基板或塑料薄膜基板以及其他可以用于形成依次排列的RGB三色子像素的基板，此处不予限定。
在本实施例中，基板101上的RGB三色子像素，是通过将基板101设置在滚筒102下方，基板101移动时，滚筒102随基板101移动方向旋转以凸版印刷的方式形成。其中，滚筒102固定于某个位置，沿滚筒102的轴心旋转，基板101的两条相对的边与滚筒102的的两个侧面分别对齐。基板101沿与另外两条边垂直的方向移动，并且保持基板101始终存在至少一部分与滚筒102接触。在其他方式中，形成基板101上的子像素时，也可以通过将基板101固定于滚筒102下方不移动，滚筒102在基板101上沿垂直于基板101某条边的方向以滚动的方式形成RGB三色子像素。
在本实施例中，基板101上多个依次排列的RGB三色子像素是通过有机发光涂料形成，为了将液态的有机发光涂料喷射到基板101上形成RGB三色子像素，在滚筒102上设有RGB三种有机发光涂料出液口（未标示），该出液口凸出于滚筒102平面，在滚筒102旋转时，出液口与基板101接触，并将有机发光涂料喷射到基板101上形成多个依次排列的RGB三色子像素。为了使基板101上形成预设的子像素排列方式，滚筒102上RGB出液口中的排布方式与基板上至少一个周期的RGB三色子像素的排布方式相同。
在本实施例中，在出液口将有机发光涂料喷射到基板101上形成子像素时，为了使有机发光涂料能够准确喷射到预设的子像素所在位置，需要设置对位器件（未标示），该对位器件用于控制滚筒102上的出液口与该出液口所要在基板101上形成的子像素所在位置对应，从而使该出液口在喷射有机发光涂料时，该有机发光涂料能够落在预设的子像素所在位置，形成预设的子像素。其中，该对位器件可为电荷耦合元件（Charge-coupledDevice，CCD）对位系统、对位平台等高精度对位系统，只要该对位器件可以实现控制出液口喷射的有机发光涂料落于基板101上的对应预设子像素所在位置即可，在此不做限定。
为了控制基板101上的RGB三色子像素大小，滚筒102上的RGB出液口大小根据基板101上对应的RGB三色子像素预设像素大小进行相应调节。
进一步的，为了更好的调节形成的子像素大小，本实施例中，本申请通过流量计与限压阀的配合来控制出液口流量的方式，实现调节基板101上形成的子像素大小。另外，因有机发光涂料使用的材料固含量以及材料不同，形成的有机发光涂料粘度也不同，在相同流量下，不同粘度的有机发光涂料形成的子像素大小也不同，因此，需要在控制出液口流量之前获取该不同颜色出液口喷射的有机发光涂料对应的粘度变化曲线。
以控制喷射红色有机发光涂料的出液口为例，对控制出液口流量的方式进行说明。为了控制出液口的流量，如图1所示，在输送用于形成红色子像素的有机发光涂料的管道103上还设有流量计104、控制器105、限压器106以及红色有机发光涂料储存装置107。
管道103的一端与红色有机发光涂料储存装置107连接，另一端与滚筒102上的红色有机发光涂料出液口连接。管道103将红色有机发光涂料储存装置107储存的红色有机发光涂料输送到滚筒102上的红色有机发光涂料出液口。且滚筒102上设有阀门（未标示），该阀门在滚筒102上的红色出液口与基板101接触时，控制管道103与该出液口连接或导通，该出液口喷射红色有机发光涂料。
在出液口喷射有机发光涂料时，通过流量计104控制出液口的有机发光涂料的喷射量，流量计104检测管道103内的红色有机发光涂料流量，并将该数据传输给控制器105。其中，流量计104可以为防腐蚀流量计、差压式流量计、氨水流量计、涡轮流量计、电磁流量计、流体振荡流量计中的涡街流量计、质量流量计和SST插入式流量计等可以测量管道103内的有机发光涂料的流量的设备中的任一种，在此不做限定。
控制器105获取流量计输送的流量数据，并根据与管道103相连的出液口对应的红色子像素大小，以及输送的有机发光涂料对应的粘度变化曲线，判断是否需要控制出液口的喷射量。若是，则控制器105发送控制管道103内的红色有机发光涂料的指令给限压阀106，限压阀106接收指令，根据该指令调节管道103内的压力，从而控制出液口的红色有机发光涂料流量。
在上述实施例中流量计104、控制器105和限压阀106可以共同设置在同一个设备中，也可以分开为几个不同的设备，还可以根据需求将三者功能进行组合或拆分，只需能够实现检测管道103内的有机发光涂料流量，并根据该流量以及预设的粘度变化曲线，改变管道103内的压力，从而改变出液口的有机发光涂料的喷射量即出液口流量即可，在此不做赘述。
进一步的，为了防止管道103受到滚筒102旋转的影响。本申请还在滚筒102上设置有转动轴（未标示），该转动轴的两端分别与管道103和滚筒102连接，其中，与管道103连接的一端固定，另一端可以随滚筒102旋转。该转动轴用于防止管道103在滚筒102旋转时受到影响，使管道103内的有机发光涂料泄露。在其他实施例中，连接管道103与滚筒102的也可以是其他能够防止管道103受到滚筒102旋转的影响，并防止有机发光涂料泄露的器件，在此不做限定。
在上述实施方式中，除了输送红色有机发光涂料的管道103外，还有输送绿色与蓝色有机发光涂料的管道（未标识）与有机发光涂料储存装置（未标示），这两个管道上也设有相应的流量计（未标示）、控制器（未标示）以及限压阀（未标示），这些装置的功能以及实现的效果与上述相同，在此不做赘述。
在其他实施例中，有机发光涂料还可以为RGBW四色，因此，基板101上形成的子像素为RGBW四色，滚筒102上的出液口与基板101上的子像素排列方式相对应设置，在此不作详述。
更进一步的，因滚筒102上设有多个喷射红色有机发光涂料的出液口，这些出液口与管道103，为了更好的将管道内的有机发光涂料输送到出液口，且仅在出液口与基板101接触时，该出液口喷射有机发光涂料。本申请在管道103将有机发光涂料通过转动轴输送到滚筒102上后，还在滚筒102上设有多个连接出液口与管道103的次级管道（未图示）。
本申请的有益效果是：区别于现有技术的情况，本申请提出一种有机发光二极管OLED显示面板，基板上的子像素通过滚筒在跟随基板移动时旋转印刷形成，其中，滚筒表面设置有与基板上至少一个周期的子像素排列方式相同的出液口，该出液口用于形成子像素，可以使RGB三色子像素一次印刷成型。本申请能够提升形成子像素的有机发光涂料的利用率，简化生产流程及周期，提高了生产效率。
为了对上述实施例中提到的滚筒中的次级管道做进一步的描述，请参阅图2，图2是图1滚筒上连接出液口的次级管道一实施例的结构示意图。
在本实施例中，以连接喷射红色有机发光涂料的次级管道201为例进行说明。
次级管道201一端的末端为弧形结构202，该弧形结构的末端与滚筒上的出液口连接。为了使滚筒上同时接触基板的喷射红色有机发光涂料的出液口能够同时喷射有机发光涂料，次级管道201通过该弧形结构连接的出液口连线垂直于滚筒截面，这种连接方式使得与次级管道201连接的出液口在同一时间获取并喷射有机发光涂料。
次级管道201的另一端与同样输送红色有机发光涂料的次级管道203、204连接，并共同连接管道103，其中，次级管道203、204与出液口的连接方式及排布方式相同，在此不做赘述。
为了控制仅有与基板接触的出液口喷射红色有机发光涂料，在次级管道上还设有控制次级管道导通的阀门（未图示），该阀门在与该次级管道连通的出液口与基板接触时控制次级管道导通，使出液口能够与管道103连通，并喷射有机发光涂料。
在上述实施方式中，除了输送红色有机发光涂料的次级管道201、203、204外，还有输送绿色与蓝色有机发光涂料的次级管道（未标识），其中，这些次级管道与输送红色有机发光涂料的次级管道201、203、204排布方式相同，在此不做赘述。
在其他实施例中，有机发光涂料还可以为RGBW四色，因此，基板上形成的子像素为RGBW四色，滚筒上的次级管道排列及连接方式也相对应设置，在此不作详述。
基于同样的发明构思，本申请还提出了一种OLED 显示装置，该显示装置包括如上所述的OLED显示面板。
在本实施例中，该OLED显示装置可以是电脑、手机、可穿戴设备等智能终端，也可以为汽车仪表、自助服务终端、电视、广告牌等显示装置，只需该显示装置具有如上所述的OLED显示面板的显示装置即可，在此不做限定。
请参阅图3，图3是本申请OLED 面板的制作方法一实施的流程示意图。
S301：准备基板。
在本实施例中，基板可为玻璃基板或塑料薄膜基板以及其他可以用于制作OLED 面板，且可形成多个依次排列的RGB三色子像素的基板，此处不予限定。
S302：通过表面设置有多个RGB出液口的滚筒跟随所述基板移动的速度旋转喷射对应的有机发光涂料在所述基板上形成多个依次排列的RGB三色子像素；所述多个RGB出液口中的排布方式与所述基板上至少一个周期的RGB三色子像素的排布方式相同。
在一个具体的实施场景中，将基板设置于滚筒下方，其中，基板的两条相对的边与滚筒的的两个侧面分别对齐。基板沿与另外两条边垂直的方向移动，并且保持基板始终存在至少一部分与滚筒接触。滚筒跟随基板作旋转运动，且滚筒旋转的方向为基板移动的方向。在滚筒上设有多个RGB出液口，这些出液口的排布方式与基板上至少一个周期的RGB三色子像素的排布方式相同。在滚筒跟随基板旋转时，滚筒上与基板接触的出液口将有机发光涂料喷射到基板上对应的子像素所在位置，从而形成多个依次排列的RGB三色子像素。
在本实施例中，基板上的RGB三色子像素，是通过在滚筒102下方设置基板，基板移动时，滚筒随基板移动方向旋转以凸版印刷的方式形成，其中，滚筒固定于某个位置，沿滚筒轴心旋转。在其他实施方式中，形成基板上的子像素时，也可以通过将基板固定于滚筒下方不移动，滚筒在基板上沿基板延伸的方向以滚动的方式形成RGB三色子像素。
在本实施例中，在出液口将有机发光涂料喷射到基板上形成子像素时，为了使有机发光涂料能够准确喷射到预设的子像素所在位置，需要设置对位器件（未标示），该对位器件用于控制滚筒上的出液口与该出液口所要在基板上形成的子像素所在位置对应，从而使该出液口在喷射有机发光涂料时，该有机发光涂料能够落在预设的子像素所在位置，形成预设的子像素。其中，该对位器件可为CCD对位系统、对位平台等高精度对位系统，只要该对位器件可以实现控制出液口喷射的有机发光涂料落于基板上的对应预设子像素所在位置即可，在此不做限定。
为了控制基板上的RGB三色子像素大小，滚筒上的出液口大小根据基板上对应的三色子像素预设像素大小进行相应调节。
进一步的，为了更好的控制形成的子像素大小，本实施例中，本申请通过流量计与限压阀的配合来控制出液口流量的方式，实现调节基板上形成的子像素大小。另外，因有机发光涂料使用的材料固含量以及材料不同，形成的有机发光涂料粘度也不同，因此，在相同流量下，不同粘度的有机发光涂料的流量相应也不同，需要在控制出液口流量之前获取该不同颜色出液口喷射的有机发光涂料对应的粘度变化曲线，其中该粘度变化曲线为有机发光涂料随时间变化曲线。
以控制喷射红色有机发光涂料的出液口为例，对控制出液口流量的方式进行说明。为了控制出液口的流量，在输送用于形成红色子像素的有机发光涂料的管道上还设有流量计、控制器、限压器以及红色有机发光涂料储存装置。
管道的一端与红色有机发光涂料储存装置连接，另一端与滚筒上的红色有机发光涂料出液口连接。管道将红色有机发光涂料储存装置储存的红色有机发光涂料输送到滚筒上的红色有机发光涂料出液口。且滚筒上设有阀门（未标示），该阀门在滚筒上的红色出液口与基板接触时，控制管道与该出液口连接或导通，该出液口喷射红色有机发光涂料。
在出液口喷射有机发光涂料时，通过流量计控制出液口的有机发光涂料的喷射量，流量计检测管道内的红色有机发光涂料流量，并将该数据传输给控制器。其中，流量计可以为防腐蚀流量计、差压式流量计、氨水流量计、涡轮流量计、电磁流量计、流体振荡流量计中的涡街流量计、质量流量计和SST插入式流量计等可以测量管道内的有机发光涂料的流量的设备中的任一种，在此不做限定。
控制器获取流量计输送的流量数据，并根据与管道相连的出液口对应的红色子像素大小，以及输送的有机发光涂料对应的粘度变化曲线，判断是否需要控制出液口的喷射量。若是，则控制器发送控制管道103内的红色有机发光涂料的指令给限压阀，限压阀接收指令，根据该指令调节管道内的压力，从而控制出液口的红色有机发光涂料流量。
在上述实施例中流量计、控制器和限压阀可以共同设置在同一个设备中，也可以分开为几个不同的设备，还可以根据需求将三者功能进行组合或拆分，只需能够实现检测管道内的有机发光涂料流量，并根据该流量以及预设的粘度变化曲线，改变管道内的压力，从而改变出液口的有机发光涂料的喷射量即出液口流量即可，在此不做赘述。
进一步的，为了防止管道受到滚筒旋转的影响。本申请还在滚筒上设置有转动轴（未标示），该转动轴的两端分别与管道和滚筒连接，其中，与管道连接的一端固定，另一端可以随滚筒旋转。该转动轴用于防止管道在滚筒旋转时受到影响，使管道内的有机发光涂料泄露。在其他实施例中，连接管道与滚筒的也可以是其他可以防止管道受到滚筒旋转的影响，并防止有机发光涂料泄露的器件，在此不做限定。
在上述实施方式中，除了输送红色有机发光涂料的管道外，还有输送绿色与蓝色有机发光涂料的管道（未标识）与有机发光涂料储存装置（未标示），这两个管道上也设有相应的流量计（未标示）、控制器（未标示）以及限压阀（未标示），这些装置的功能以及实现的效果与上述相同，在此不做赘述。
在其他实施例中，有机发光涂料还可以为RGBW四色，因此，基板上形成的子像素为RGBW四色，滚筒上的出液口与基板上的子像素排列方式相对应设置，在此不作详述。
更进一步的，因滚筒上设有多个喷射红色有机发光涂料的出液口，这些出液口与管道，为了更好的将管道内的有机发光涂料输送到出液口，且仅在出液口与基板接触时，该出液口喷射有机发光涂料。本申请在管道将有机发光涂料通过转动轴输送到滚筒上后，还在滚筒上设有多个连接出液口与管道的次级管道。
在本实施例中，以连接喷射红色有机发光涂料的次级管道为例进行说明。
次级管道一端的末端为弧形结构，该弧形结构的末端与滚筒上的出液口连接。为了使滚筒上同时接触基板的喷射红色有机发光涂料的出液口能够同时喷射有机发光涂料，次级管道通过该弧形结构连接的出液口连线垂直于滚筒截面，这种连接方式使得与次级管道连接的出液口在同一时间获取并喷射有机发光涂料。
次级管道的另一端与同样输送红色有机发光涂料的次级管道、连接，并共同连接管道，其中，次级管道与出液口的连接方式及排布方式相同，在此不做赘述。
为了控制仅有与基板接触的出液口喷射红色有机发光涂料，在次级管道上还设有控制次级管道导通的阀门，该阀门在与该次级管道连通的出液口与基板接触时控制次级管道导通，使出液口能够与管道连通，并喷射有机发光涂料。
在上述实施方式中，除了输送红色有机发光涂料的次级管道外，还有输送绿色与蓝色有机发光涂料的次级管道，其中，这些次级管道与输送红色有机发光涂料的次级管道排布方式相同，在此不做赘述。
在其他实施例中，有机发光涂料还可以为RGBW四色，因此，基板上形成的子像素为RGBW四色，滚筒上的次级管道排列及连接方式也相对应设置，在此不作详述。
本申请的有益效果是：区别于现有技术的情况，本申请提出一种OLED显示面板制作方法，基板上的子像素通过滚筒在跟随基板移动时旋转印刷形成，其中，滚筒表面设置有与基板上至少一个周期的子像素排列方式相同的出液口，该出液口用于形成子像素，可以使RGB三色子像素一次印刷成型。本申请能够提升形成子像素的有机发光涂料的利用率，简化生产流程及周期，提高了生产效率。
基于同样的发明构思，本申请还提出了一种OLED 面板制作装置。请参阅图4，图4是本申请OLED 面板制作装置一实施例的结构示意图。其中，该制作装置包括：滚筒402、管道403、流量计404、控制器405、限压阀406以及有机发光涂料储存装置407。
在本实施例中，OLED 面板制作装置用于以凸版印刷的方式将有机发光涂料喷射到基板401上，同时形成多个依次排列的RGB三色子像素（未标示）。
在本实施例中，基板401可为玻璃基板或塑料薄膜基板以及其他可以用于形成依次排列的RGB三色子像素的基板，此处不予限定。
在本实施例中，基板401上的RGB三色子像素，是通过将基板401设置于滚筒402下方，基板401移动时，滚筒402随基板401移动方向旋转以凸版印刷的方式形成。其中，滚筒402固定于某个位置，沿滚筒402的轴心旋转，基板401的两条相对的边与滚筒402的的两个侧面分别对齐。基板401沿与另外两条边垂直的方向移动，并且保持基板401始终存在至少一部分与滚筒402接触。在其他方式中，形成基板401上的子像素时，也可以通过将基板401固定于滚筒402下方不移动，滚筒402在基板401上沿垂直于基板401的某条边的方向以滚动的方式形成RGB三色子像素。
在本实施例中，基板401上多个依次排列的RGB三色子像素是通过有机发光涂料形成，为了将液态的有机发光涂料喷射到基板401上形成RGB三色子像素，在滚筒402上设有RGB三种有机发光涂料出液口（未标示），该出液口凸出于滚筒402平面，在滚筒402旋转时，出液口与基板401接触，并将有机发光涂料喷射到基板401上形成多个依次排列的RGB三色子像素。为了使基板401上形成预设的子像素排列方式，滚筒402上RGB出液口中的排布方式与基板上至少一个周期的RGB三色子像素的排布方式相同。
在本实施例中，在出液口将有机发光涂料喷射到基板401上形成子像素时，为了使有机发光涂料能够准确喷射到预设的子像素所在位置，需要设置对位器件（未标示），该对位器件用于控制滚筒402上的出液口与该出液口所要在基板401上形成的子像素所在位置对应，从而使该出液口在喷射有机发光涂料时，该有机发光涂料能够落在预设的子像素所在位置，形成预设的子像素。其中，该对位器件可为CCD对位系统、对位平台等高精度对位系统，只要该对位器件可以实现控制出液口喷射的有机发光涂料落于基板401上的对应预设子像素所在位置即可，在此不做限定。
为了控制基板401上的RGB三色子像素大小，滚筒402上的RGB出液口大小根据基板401上对应的RGB三色子像素预设像素大小进行相应调节。
进一步的，为了更好的调节形成的子像素大小，本实施例中，本申请通过流量计与限压阀的配合来控制出液口流量的方式，实现调节基板401上形成的子像素大小。另外，因有机发光涂料使用的材料固含量以及材料不同，形成的有机发光涂料粘度也不同，在相同流量下，不同粘度的有机发光涂料形成的子像素大小也不同，因此，需要在控制出液口流量之前预先设置该不同颜色出液口喷射的有机发光涂料对应的的粘度变化曲线。
以控制喷射红色有机发光涂料的出液口为例，对控制出液口流量的方式进行说明。为了控制出液口的流量，如图4所示，在输送用于形成红色子像素的有机发光涂料的管道403上还设有流量计404、控制器405、限压器406以及红色有机发光涂料储存装置407。
管道403的一端与红色有机发光涂料储存装置407连接，另一端与滚筒402上的红色有机发光涂料出液口连接。管道403将红色有机发光涂料储存装置407储存的红色有机发光涂料输送到滚筒402上的红色有机发光涂料出液口。且滚筒402上设有阀门（未标示），该阀门在滚筒402上的红色出液口与基板401接触时，控制管道403与该出液口连接或导通，该出液口喷射红色有机发光涂料。
在出液口喷射有机发光涂料时，通过流量计404控制出液口的有机发光涂料的喷射量，流量计404检测管道403内的红色有机发光涂料流量，并将该数据传输给控制器405。其中，流量计404可以为防腐蚀流量计、差压式流量计、氨水流量计、涡轮流量计、电磁流量计、流体振荡流量计中的涡街流量计、质量流量计和SST插入式流量计等可以测量管道403内的有机发光涂料的流量的设备中的任一种，在此不做限定。
控制器405获取流量计输送的流量数据，并根据与管道403相连的出液口对应的红色子像素大小，以及输送的有机发光涂料对应的粘度变化曲线，判断是否需要控制出液口的喷射量。若是，则控制器405发送控制管道403内的红色有机发光涂料的指令给限压阀406，限压阀406接收指令，根据该指令调节管道403内的压力，从而控制出液口的红色有机发光涂料流量。
在上述实施例中流量计404、控制器405和限压阀406可以共同设置在同一个设备中，也可以分开为几个不同的设备，还可以根据需求将三者功能进行组合或拆分，只需能够实现检测管道403内的有机发光涂料流量，并根据该流量以及预设的粘度变化曲线，改变管道403内的压力，从而改变出液口的有机发光涂料的喷射量即出液口流量即可，在此不做赘述。
进一步的，为了防止管道403受到滚筒402旋转的影响。本申请还在滚筒402上设置有转动轴（未标示），该转动轴的两端分别与管道403和滚筒402连接，其中，与管道403连接的一端固定，另一端可以随滚筒402旋转。该转动轴用于防止管道403在滚筒402旋转时受到影响，使管道403内的有机发光涂料泄露。在其他实施例中，连接管道403与滚筒402的也可以是其他可以防止管道403受到滚筒402旋转的影响，并防止有机发光涂料泄露的器件，在此不做限定。
在上述实施方式中，除了输送红色有机发光涂料的管道403外，还有输送绿色与蓝色有机发光涂料的管道（未标识）与有机发光涂料储存装置（未标示），这两个管道上也设有相应的流量计（未标示）、控制器（未标示）以及限压阀（未标示），这些装置的功能以及实现的效果与上述相同，在此不做赘述。
在其他实施例中，有机发光涂料还可以为RGBW四色，因此，基板401上形成的子像素为RGBW四色，滚筒402上的出液口与基板401上的子像素排列方式相对应设置，在此不作详述。
更进一步的，因滚筒402上设有多个喷射红色有机发光涂料的出液口，这些出液口与管道403，为了更好的将管道内的有机发光涂料输送到出液口，且仅在出液口与基板401接触时，该出液口喷射有机发光涂料。本申请在管道403将有机发光涂料通过转动轴输送到滚筒402上后，还在滚筒402上设有多个连接出液口与管道403的次级管道（未图示）。
为了对上述实施例中提到的滚筒中的次级管道做进一步的描述，请参阅图5，图5是图4滚筒上连接出液口的次级管道一实施例的结构示意图。
在本实施例中，以连接喷射红色有机发光涂料的次级管道501为例进行说明。
次级管道501一端的末端为弧形结构502，该弧形结构的末端与滚筒上的出液口连接。为了使滚筒上同时接触基板的喷射红色有机发光涂料的出液口能够同时喷射有机发光涂料，次级管道501通过该弧形结构连接的出液口连线垂直于滚筒截面，这种连接方式使得与次级管道501连接的出液口在同一时间获取并喷射有机发光涂料。
次级管道501的另一端与同样输送红色有机发光涂料的次级管道503、504连接，并共同连接管道403，其中，次级管道503、504与出液口的连接方式及排布方式相同，在此不做赘述。
为了控制仅有与基板接触的出液口喷射红色有机发光涂料，在次级管道上还设有控制次级管道导通的阀门（未图示），该阀门在与该次级管道连通的出液口与基板接触时控制次级管道导通，使出液口能够与管道503连通，并喷射有机发光涂料。
在上述实施方式中，除了输送红色有机发光涂料的次级管道501、503、504外，还有输送绿色与蓝色有机发光涂料的次级管道（未标识），其中，这些次级管道与输送红色有机发光涂料的次级管道501、503、504排布方式相同，在此不做赘述。
在其他实施例中，有机发光涂料还可以为RGBW四色，因此，基板上形成的子像素为RGBW四色，滚筒上的次级管道排列及连接方式也相对应设置，在此不作详述。
本申请的有益效果是：区别于现有技术的情况，本申请提出一种OLED显示面板制作装置，基板上的子像素通过滚筒在跟随基板移动时旋转印刷形成，其中，滚筒表面设置有与基板上至少一个周期的子像素排列方式相同的出液口，该出液口用于形成子像素，可以使RGB三色子像素一次印刷成型。本申请能够提升形成子像素的有机发光涂料的利用率，简化生产流程及周期，提高了生产效率。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请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，均同理包括在本申请的专利保护范围内。

Claims (16)

  1. 一种有机发光二极管OLED显示面板，其中，所述OLED显示面板包括：基板以及形成在所述基板上的多个依次排列的RGB三色子像素，其中，所述多个依次排列的RGB三色子像素是通过表面设置有多个RGB出液口的滚筒跟随所述基板移动的速度旋转印刷而得到的；所述多个RGB出液口中的排布方式与所述基板上至少一个周期的RGB三色子像素的排布方式相同。
  2. 根据权利要求1所述的有机发光二极管OLED显示面板，其中，所述基板的两条相对的边与所述滚筒的两个侧面分别对齐。
  3. 根据权利要求1所述的有机发光二极管OLED显示面板，其中，所述多个依次排列的RGB三色子像素是通过根据所述RGB三色子像素的预设像素大小以及预先设置的粘度变化曲线，控制所述多个RGB出液口的流量而得到的。
  4. 根据权利要求1所述的有机发光二极管OLED显示面板，其中，所述多个依次排列的RGB三色子像素是通过根据所述RGB三色子像素的预设像素大小以及预先设置的粘度变化曲线，控制所述多个RGB出液口对应的限压阀的压力以控制所述RGB有机发光涂料的喷射量而得到的。
  5. 根据权利要求3所述的有机发光二极管OLED显示面板，其中，所述多个依次排列的RGB三色子像素是通过根据所述RGB三色子像素的预设像素大小以及预先设置的粘度变化曲线，控制所述多个RGB出液口对应的限压阀的压力以控制所述RGB有机发光涂料的喷射量而得到的。
  6. 根据权利要求4所述的有机发光二极管OLED显示面板，其中，所述多个RGB出液口的喷射量是通过流量计控制的。
  7. 根据权利要求5所述的有机发光二极管OLED显示面板，其中，所述多个RGB出液口的喷射量是通过流量计控制的。
  8. 一种OLED面板的制作方法，其中，包括：
    准备基板；
    通过表面设置有多个RGB出液口的滚筒跟随所述基板移动的速度旋转喷射对应的有机发光涂料在所述基板上形成多个依次排列的RGB三色子像素；所述多个RGB出液口中的排布方式与所述基板上至少一个周期的RGB三色子像素的排布方式相同。
  9. 根据权利要求8所述的制作方法，其中，所述基板的两条相对的边与所述滚筒的两个侧面分别对齐。
  10. 根据权利要求8所述的制作方法，其中，所述通过表面设置有多个RGB出液口的滚筒跟随所述基板移动的速度旋转喷射对应的有机发光涂料在所述基板上形成多个依次排列的RGB三色子像素的步骤具体包括：
    确定所述基板的RGB三色子像素对应的有机发光涂料的粘度变化曲线；
    基于所述RGB三色子像素的像素大小以及所述粘度变化曲线确定所述多个RGB出液口的流量以形成所述多个依次排列的RGB三色子像素。
  11. 根据权利要求10所述的制作方法，其中，所述基于所述RGB三色子像素的像素大小以及所述粘度变化曲线确定所述多个RGB出液口的流量以形成所述多个依次排列的RGB三色子像素的步骤具体包括：
    基于所述RGB三色子像素的像素大小以及所述粘度变化曲线通过流量计控制所述多个RGB出液口的流量以形成所述多个依次排列的RGB三色子像素。
  12. 根据权利要求11所述的制作方法，其中，所述基于所述RGB三色子像素的像素大小以及所述粘度变化曲线通过流量计控制所述多个RGB出液口对应的限压阀的压力，从而控制多个RGB出液口的流量以形成所述多个依次排列的RGB三色子像素。
  13. 一种OLED面板制作装置，其中，包括：
    滚筒，所述滚筒外壁设有多个RGB出液口，所述多个RGB出液口中的排布方式与OLED显示面板的基板上至少一个周期的RGB三色子像素的排布方式相同，所述滚筒跟随所述基板移动的速度旋转以在所述基板上印刷得到多个依次排列的RGB三色子像素。
  14. 根据权利要求13所述的OLED面板制作装置，其中，所述滚筒的两个相对的侧面与所述基板的两个边分别对齐。
  15. 根据权利要求13所述的所述OLED面板制作装置还包括有机发光涂料出口，所述有机发光涂料出口包括RGB出液口，所述有机发光涂料出口用于在与所述基板接触时，将所述RGB有机发光涂料印刷在所述基板上形成所述多个依次排列的RGB三色子像素。
  16. 根据权利要求13所述的OLED面板制作装置，其中，所述OLED面板制作装置还包括流量计、限压阀、控制器以及RGB有机发光涂料，所述流量计以及所述限压阀设置在所述RGB有机发光涂料向对应的出液口流动的路径上，所述控制器分别与所述流量计以及所述限压阀连接，通过预先设置的所述RGB三色子像素的粘度变化曲线以及所述流量计采集的数量控制对应的所述限压阀的压力以控制所述RGB有机发光涂料出口的喷射量。
PCT/CN2018/087739 2018-03-30 2018-05-22 Oled面板及其制作方法及oled显示装置 WO2019184069A1 (zh)

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