WO2020133816A1 - 显示面板及其制备方法 - Google Patents

显示面板及其制备方法 Download PDF

Info

Publication number
WO2020133816A1
WO2020133816A1 PCT/CN2019/083025 CN2019083025W WO2020133816A1 WO 2020133816 A1 WO2020133816 A1 WO 2020133816A1 CN 2019083025 W CN2019083025 W CN 2019083025W WO 2020133816 A1 WO2020133816 A1 WO 2020133816A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
light
target
excitation light
target light
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/083025
Other languages
English (en)
French (fr)
Inventor
张桂洋
查国伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
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 Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US16/475,135 priority Critical patent/US10978509B2/en
Publication of WO2020133816A1 publication Critical patent/WO2020133816A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses
    • H10H20/856—Reflecting means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
    • H10H29/10—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00
    • H10H29/14—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00 comprising multiple light-emitting semiconductor components
    • H10H29/142—Two-dimensional arrangements, e.g. asymmetric LED layout
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/01—Manufacture or treatment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/84—Coatings, e.g. passivation layers or antireflective coatings
    • H10H20/841—Reflective coatings, e.g. dielectric Bragg reflectors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/01—Manufacture or treatment
    • H10H20/036—Manufacture or treatment of packages
    • H10H20/0361—Manufacture or treatment of packages of wavelength conversion means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations

Definitions

  • the present application relates to the field of display technology, in particular to a display panel and a preparation method thereof.
  • LCD Liquid Crystal Display
  • OLED Organic Light Emitting Diode Display
  • LCD light utilization rate is low, resolution is not high, OLED life is short, brightness is low, all, need to develop a more comprehensive effect Display devices, such as QLED (quantum dot light emitting diode), mini-LED (mini light emitting diode), and the ultimate micro display technology, such as micro LED (miniature light emitting diode), QLED display.
  • QLED quantum dot light emitting diode
  • mini-LED mini light emitting diode
  • micro LED miniature light emitting diode
  • Micro LED has the advantages of high light efficiency, low power consumption, high color gamut, long life, good stability and so on.
  • Micro LEDs are roughly divided into two types, one is micro using RGB (red, green and blue) three colors LED is used as a sub-pixel, but when it is transferred to the driving substrate, the transfer efficiency is low; while the other is shown in Figure 1, by using a near ultraviolet micro light-emitting diode, a light conversion layer is provided on the light source to reduce the near ultraviolet light Converting to red, green, and blue light is easier to achieve, but the red, green, and blue light is mixed with near-ultraviolet light, resulting in low color saturation, and a large angle of light output from the sub-pixel units, which is easy between sub-pixel units. Color crosstalk occurs.
  • RGB red, green and blue
  • the present application provides a display panel and a preparation method thereof to solve the technical problems of the existing micro display technology.
  • An embodiment of the present application provides a display panel, which includes a sub-pixel unit, and at least part of the sub-pixel unit includes:
  • Excitation light source for generating excitation light
  • the target light conversion layer is provided in the light exit direction of the excitation light source, and is used to convert the excitation light into target light;
  • the target light transmission layer is provided in the light exit direction of the target light conversion layer, is used to transmit the target light generated by the light conversion layer, and reflect the excitation light passing through the target light conversion layer.
  • the target light transmission layer is formed on the light exit surface of the target light conversion layer, and the excitation light passing through the target light conversion layer is reflected to the target light conversion layer.
  • the display panel provided by the present application further includes an excitation light transmission layer, and the excitation light transmission layer is disposed in the light exit direction of the excitation light source and is located between the excitation light source and the target light conversion layer.
  • the excitation light transmission layer is formed on the light exit surface of the excitation light source.
  • the target light conversion layer is formed on the light exit surface of the excitation light transmission layer.
  • the total thickness of the excitation light transmission layer, the target light conversion layer, and the target light transmission layer is 200 nm to 500 nm.
  • the display panel provided by the present application further includes a photopolymerization layer, disposed between adjacent sub-pixel units, and configured to aggregate target light emitted by the sub-pixel units.
  • the photopolymerization layer is disposed around the side of the sub-pixel unit.
  • the photopolymerization layer is disposed around the sides of the target light conversion layer and the target light transmission layer.
  • the photopolymerization layer is disposed around the sides of the excitation light transmission layer, the target light conversion layer, and the target light transmission layer.
  • An embodiment of the present application also provides a method for preparing a display panel, which includes:
  • An excitation light source is fixed in the fixing member, and the light source is used to generate excitation light;
  • the target light conversion layer is used to convert the excitation light into target light
  • a target light transmission layer is formed in the light exit direction of the target light conversion layer, and the target light transmission layer is used to transmit the target light generated by the light conversion layer and reflect the light passing through the target light conversion layer Excitation light;
  • a protective layer is formed on the target light transmission layer to obtain the display panel.
  • the step of forming a target light transmission layer in the light exit direction of the target light conversion layer includes forming a target light transmission layer on the light exit surface of the target light conversion layer.
  • it further includes forming an excitation light transmission layer in the light emitting direction of the excitation light source.
  • the step of forming an excitation light transmission layer in the light exit direction of the excitation light source includes forming an excitation light transmission layer on the light exit surface of the excitation light source.
  • a target light conversion layer on the light exit surface of the excitation light transmission layer.
  • the step of forming an excitation light transmission layer in the light exit direction of the excitation light source includes vapor-depositing an inorganic material on the light exit surface of the excitation light source to form an excitation light transmission layer.
  • a display panel of the present application further includes forming a photopolymerization layer between adjacent sub-pixel units, and the photo-polymerization layer is used to polymerize the light emitted by the sub-pixel units.
  • the step of forming a photopolymerization layer between adjacent sub-pixel units includes forming the photopolymerization layer around the side of the sub-pixel unit.
  • the step of forming a photopolymerization layer between adjacent sub-pixel units includes forming the photopolymerization around sides of the target light conversion layer and the target light transmission layer Floor.
  • the step of forming a photopolymerization layer between adjacent sub-pixel units includes surrounding the excitation light transmission layer, the target light conversion layer, and the target light transmission layer Forming the photopolymerization layer.
  • the present application provides a display panel and a method for manufacturing the same.
  • the display panel includes a sub-pixel unit. At least part of the sub-pixel unit includes an excitation light source, a target light conversion layer, and a target light transmission layer.
  • the excitation light source is used to generate excitation light.
  • the target light conversion layer is provided in the light exit direction of the excitation light source for converting the excitation light into target light
  • the target light transmission layer is provided in the light exit direction of the target light conversion layer for Target light generated through the light conversion layer and reflecting the excitation light passing through the target light conversion layer; by providing the target light transmission layer on the target light conversion layer, by setting the target on the target light conversion layer
  • the light transmission layer only passes the target light of the target light conversion layer, and reflects the excitation light, which enhances the target light purity emitted by the sub-pixel unit, thereby alleviating the low color saturation existing in the existing micro display technology to a certain extent defect.
  • FIG. 1 is a schematic structural diagram of a display panel provided by the prior art.
  • FIG. 2 is a first schematic structural diagram of a display panel provided by an embodiment of the present application.
  • FIG. 3 is a second schematic structural diagram of a display panel provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present application.
  • FIG. 5 is a first schematic diagram of a display panel preparation process provided by an embodiment of the present application.
  • FIG. 6 is a second schematic diagram of a preparation process of a display panel provided by an embodiment of the present application.
  • This application is directed to the technical problem that the existing micro display technology has defects, and the embodiments of this application can solve this problem.
  • the sub-pixel unit in the existing display panel includes an excitation light source 11 and a light conversion layer.
  • the light conversion layer includes a red light conversion layer 121, a green light conversion layer 122, and a blue light conversion layer 123. It is a blue miniature light-emitting diode.
  • the excitation light from the excitation light source is converted into light of the corresponding color through the light conversion layer, but part of the excitation light will pass through the light conversion layer, resulting in the mixed light of red light and blue light 131 ,
  • the mixed color light 132 of green light and blue light, and blue light 133 due to the impure red and green light during display, the color saturation of the display is not enough, and the different color lights between adjacent sub-pixel units will crosstalk, further increasing Problem, therefore, the existing micro display technology has defects.
  • an embodiment of the present application provides a display panel.
  • the display panel includes a sub-pixel unit, and the sub-pixel unit includes:
  • Excitation light source 21 for generating excitation light
  • a target light conversion layer 24 (including 241 and 242 in FIG. 2) is provided in the light exit direction of the excitation light source, and is used to convert the excitation light into target light;
  • the target light transmission layer 25 (including 251 and 252 in FIG. 2) is disposed in the light exit direction of the target light conversion layer, and is used to transmit the target light generated by the light conversion layer and reflect through the Excitation light of the target light conversion layer.
  • the target light transmission layer is formed on the light exit surface of the target light conversion layer and reflects the excitation light passing through the target light conversion layer to the target light conversion layer.
  • the display panel further includes an excitation light transmission layer, and the excitation light transmission layer is disposed in the light exit direction of the excitation light source, between the excitation light source and the target light conversion layer.
  • the excitation light transmission layer is formed on the light exit surface of the excitation light source.
  • the target light conversion layer is formed on the light exit surface of the excitation light transmission layer.
  • the total thickness of the excitation light transmission layer, the target light conversion layer, and the target light transmission layer is 200 nm to 500 nm.
  • the display panel further includes a photopolymerization layer, disposed between adjacent sub-pixel units, and configured to aggregate target light emitted by the sub-pixel units.
  • the photopolymerization layer is disposed around the side of the sub-pixel unit.
  • the photopolymerization layer is disposed around the sides of the target light conversion layer and the target light transmission layer.
  • the photopolymerization layer is disposed around the sides of the excitation light transmission layer, the target light conversion layer, and the target light transmission layer.
  • This embodiment provides a display panel including a sub-pixel unit. At least a part of the sub-pixel unit includes an excitation light source, a target light conversion layer, and a target light transmission layer.
  • the excitation light source is used to generate excitation light.
  • the target light conversion layer is provided in the light exit direction of the excitation light source for converting the excitation light into target light
  • the target light transmission layer is provided in the light exit direction of the target light conversion layer for transmission
  • the target light generated through the light conversion layer and reflecting the excitation light passing through the target light conversion layer; by setting the target light transmission layer on the target light conversion layer, by setting the target light transmission on the target light conversion layer Over-layer, only the target light that passes through the target light conversion layer, and the reflected excitation light enhances the target light purity emitted by the sub-pixel unit, thereby alleviating the defects of low color saturation existing in the existing micro display technology to a certain extent.
  • the excitation light generated by the excitation light source 21 is also one of the target light colors (red, green, blue, white, etc.) of the sub-pixels.
  • the sub-pixels of the display panel are formed as shown in FIG. 2 Specifically, taking the excitation light source 21 as a blue LED for example, the sub-pixel unit includes: an excitation light source 21, an excitation light transmission layer 22, a photopolymerization layer 23, and a target light conversion layer 24 (including 241 and 242 in FIG. 2) And the target light transmission layer 25 (including 251 and 252 in FIG.
  • the excitation light source is a blue excitation light source 21
  • the excitation light transmission layer is a blue light transmission layer 22
  • the target light conversion layer includes The red light conversion layer 241 and the green light conversion layer 242, the target light transmission layer includes a red light transmission layer 251 and a green light transmission layer 252.
  • the blue light transmissive layer 22 is provided on the light exit surface of the blue excitation light source 21, and a corresponding red light conversion layer 241 is provided on the light exit surface of the blue light transmissive layer 22
  • a red light transmission layer 251 is provided on the light output surface of the red light conversion layer 241
  • a green light transmission layer 252 is provided on the light output surface of the green light conversion layer 242, the blue excitation
  • the blue excitation light emitted by the light source passes through the target light conversion layer and the target light transmission layer to obtain red light 261, green light 262, and blue light 263.
  • the excitation light source 21 may be any one of a blue LED, a red LED, a green LED, and a white LED.
  • the excitation light generated by the excitation light source is not one of the target light colors (red, green, blue, white, etc.) of the sub-pixels.
  • the sub-pixels of the display panel are formed as shown in FIG. 3, Specifically, taking the excitation light source as a violet LED as an example, the sub-pixel unit includes: an excitation light source 31, an excitation light transmission layer 32, a photopolymerization layer 33, a target light conversion layer and a target light transmission layer, the excitation light source is near An ultraviolet excitation light source 31, the excitation light transmission layer is a near ultraviolet light transmission layer 32, the target light conversion layer includes a red light conversion layer 341, a green light conversion layer 342, and a blue light conversion layer 343, the target light transmission The overlayer includes a red light transmission layer 351, a green light transmission layer 352, and a blue light transmission layer 353.
  • a near-ultraviolet light transmission layer 32 is provided on the light exit surface of the near-ultraviolet excitation light source 31, and a red light conversion layer 341 is provided on the light exit surface of the near-ultraviolet light transmission layer 32 ,
  • the over layer 352 is provided with a blue light transmission layer 353 on the light exit surface of the blue light conversion layer 343.
  • the near ultraviolet excitation light passes through the near ultraviolet light transmission layer, the target light conversion layer and the target light transmission layer to obtain red Light 361, green light 362 and blue light 363.
  • an excitation light transmission layer is provided on the excitation light source to increase the transmittance of the excitation light.
  • a target light transmission layer is provided on the target light conversion layer. The excitation light emitted by the excitation light source passes through the target light conversion layer After being converted into mixed light of target light and excitation light, when passing through the target light transmission layer, the target light exits, and the excitation light will be reflected, so that the obtained target light is mixed with less excitation light or even no excitation Light, so that the target light obtained is relatively pure, thereby improving the color saturation of the display and alleviating the defects of the micro display technology.
  • the excitation light is reflected when passing through the target light transmission layer, so that the target light conversion layer is excited again to be converted into the target light exit, and the excitation light transmission layer will effectively prevent the reflected back excitation light After being converted into target light, it is mixed with the excitation light emitted by the excitation light source, thereby affecting the purity of the excitation light, and because the excitation light will again excite the target light conversion layer to emit the target light, the thickness of the target light conversion layer can be reduced, for example, the excitation light
  • the total thickness of the transmission layer, the target light conversion layer, and the target light transmission layer is 200 nm to 500 nm, which reduces the thickness and can reduce the cost.
  • the target light is transmitted through the transmittance of the target light transmission layer and the reflected excitation light is transmitted, for example, the red light transmission layer is adjusted to have a transmission wavelength band of red light wavelength, thereby exciting blue light Light reflection makes the emitted target light more pure, improving color saturation and display quality.
  • a photopolymerization layer is provided around the sub-pixel unit, and target light between adjacent sub-pixel units will crosstalk. Adding a photopolymerization layer will effectively prevent the exit angle of the target light from being too large, thereby No crosstalk occurs between the target lights, and the purity of the target lights is improved.
  • the photopolymerization layer is disposed around the sides of the target light conversion layer and the target light transmission layer.
  • the photopolymerization layer is disposed around the sides of the excitation light transmission layer, the target light conversion layer and the target light transmission layer, and by providing the photopolymerization layer, it can be prevented from appearing between adjacent sub-pixel units Crosstalk, and the excitation light emitted by the target light transmission layer can be aggregated to the target light conversion layer to further reduce the thickness of the target light conversion layer.
  • adjacent sub-pixel units may use the same photo-polymerization layer, or each sub-pixel unit is provided with a photo-polymerization layer.
  • the height of the photo-polymerization layer can be increased to different degrees to prevent crosstalk from occurring in adjacent sub-pixel units, thereby improving the purity of the target light and alleviating the defects of the existing micro display technology.
  • an embodiment of the present application further provides a method for manufacturing a display panel. As shown in FIG. 4, the embodiment provides a method for manufacturing a display panel including the following steps:
  • an excitation light source is fixed in the fixing member, and the light source is used to generate excitation light;
  • a target light conversion layer is formed in at least a part of the light emitting direction of the excitation light source, and the target light conversion layer is used to convert the excitation light into target light;
  • S406 Form a target light transmission layer in the light exit direction of the target light conversion layer, the target light transmission layer is used to transmit the target light generated by the light conversion layer and reflect through the target light conversion Excitation light of the layer;
  • the step of forming a target light transmission layer in the light exit direction of the target light conversion layer includes forming a target light transmission layer on the light exit surface of the target light conversion layer.
  • the method for manufacturing the display panel shown in FIG. 4 further includes: forming an excitation light transmission layer in the light emitting direction of the excitation light source.
  • the step of forming an excitation light transmission layer in the light exit direction of the excitation light source includes: forming an excitation light transmission layer on the light exit surface of the excitation light source.
  • the method for manufacturing the display panel shown in FIG. 4 further includes: forming a target light conversion layer on the light exit surface of the excitation light transmission layer.
  • the step of forming an excitation light transmission layer in the light exit direction of the excitation light source includes vapor-depositing an inorganic material on the light exit surface of the excitation light source to form an excitation light transmission layer.
  • the method for manufacturing the display panel shown in FIG. 4 further includes: forming a photopolymerization layer between adjacent sub-pixel units, and the photo-polymerization layer is used to polymerize the light emitted by the sub-pixel units.
  • the step of forming a photopolymerization layer between adjacent sub-pixel units includes: forming the photopolymerization layer around the side of the sub-pixel unit.
  • the step of forming a photopolymerization layer between adjacent sub-pixel units includes: forming the photopolymerization layer around sides of the target light conversion layer and the target light transmission layer.
  • the step of forming a photopolymerization layer between adjacent sub-pixel units includes: surrounding sides of the excitation light transmission layer, the target light conversion layer, and the target light transmission layer Forming the photopolymerization layer.
  • This embodiment provides a method for manufacturing a display panel.
  • the display panel obtained by the method includes a sub-pixel unit. At least part of the sub-pixel unit includes an excitation light source, a target light conversion layer, and a target light transmission layer.
  • the excitation light source is used to generate Excitation light
  • the target light conversion layer is provided in the light exit direction of the excitation light source for converting the excitation light into target light
  • the target light transmission layer is provided in the light exit direction of the target light conversion layer
  • On for transmitting the target light generated by the light conversion layer and reflecting the excitation light passing through the target light conversion layer; by setting the target light transmission layer on the target light conversion layer, by passing the target light conversion layer
  • the target light transmission layer is set on the target light only to pass through the target light conversion layer, and the excitation light is reflected to enhance the target light purity emitted by the sub-pixel unit, thereby alleviating the color saturation existing in the existing micro display technology to a certain extent Defects such as low degree.
  • An embodiment of the present application provides a method for preparing a display panel, including:
  • Step 51 a fixing groove is formed at the corresponding position of the sub-pixel on the substrate for fixing the blue LED as the excitation light source, and the fixing structure is shown as (1) in FIG. 5;
  • Step 52 Fix the blue LED in the fixing groove as the excitation light source at the corresponding positions of all the sub-pixels on the substrate, as shown in (2) of FIG. 5;
  • Step 53 Use a mask or the like to form an excitation light transmission layer on the corresponding position of the sub-pixel on the substrate, that is, form a blue transmission layer on the light exit surface of the blue excitation light source, and form a blue transmission on the corresponding position of the blue sub-pixel
  • the thickness of the layer is greater than the corresponding position of the red photo subpixel and the corresponding position of the green photo subpixel, and the effect is shown in (3) in FIG. 5 at this time;
  • Step 54 Form a target light conversion layer on the corresponding position of the target sub-pixel, that is, form a red light conversion layer on the light-emitting surface of the blue transmission layer corresponding to the position of the red photo-subpixel, and form a light-emitting surface of the blue transmission layer corresponding to the position of the green sub-pixel
  • the green light conversion layer is formed, and the effect is as shown in (4) in Figure 5;
  • Step 55 a target light transmission layer is formed at the corresponding position of the target subpixel, that is, a red light transmission layer is formed on the light emitting surface of the red light conversion layer corresponding to the red light subpixel, and light is emitted at the green light conversion layer corresponding to the green light subpixel A green light-transmitting layer is formed on the surface, and the effect is shown in (5) in Figure 5;
  • Step 56 a photopolymerization layer is formed on the sides of all sub-pixels, that is, a photopolymerization layer is formed around the sides of the sub-pixel units, and the effect is as shown in (6) in FIG. 5;
  • Step 57 forming a protective layer on the substrate, that is, forming a protective layer on the target light transmission layer to obtain the display panel, and the effect is shown in (7) in FIG. 5 at this time.
  • An embodiment of the present application provides a method for preparing a display panel, including:
  • Step 61 forming a fixing groove at a corresponding position of the sub-pixel on the substrate for fixing the violet LED as an excitation light source, the fixing structure is shown in (1) in FIG. 6;
  • Step 62 Fix the corresponding position of all sub-pixels on the substrate, that is, fix the violet LED in the fixing groove as the excitation light source, and the fixing structure is shown in (2) in FIG. 6;
  • Step 63 Use a mask or the like to form an excitation light transmission layer on the corresponding position of all sub-pixels on the substrate, that is, a violet light transmission layer is formed on the light-emitting surfaces of all purple excitation light sources, and the effect is as shown in Figure 6 (3) Shown
  • Step 64 a target light conversion layer is formed at the corresponding position of the target subpixel, that is, a red light conversion layer is formed on the light emitting surface of the purple light transmission layer corresponding to the position of the red light subpixel, and a light emitting surface of the purple light transmission layer corresponding to the position of the green light subpixel A green light conversion layer is formed, and a blue light conversion layer is formed on the light exit surface of the purple light transmission layer at the corresponding position of the blue sub-pixel, and the effect is shown in (4) in FIG. 6;
  • Step 65 a target light transmission layer is formed at the corresponding position of the target subpixel, that is, a red light transmission layer is formed on the light emitting surface of the red light conversion layer corresponding to the red light subpixel, and light is emitted at the green light conversion layer corresponding to the green light subpixel A green light-transmitting layer is formed on the surface, and a blue light-transmitting layer is formed on the blue-light conversion output surface at the corresponding position of the blue sub-pixel.
  • Step 66 a photopolymerization layer is formed on the sides of all the sub-pixels, that is, a photopolymerization layer is formed around the sides of the sub-pixel units, and the effect is shown in (6) in FIG. 6;
  • step 67 a protective layer is formed on the substrate, that is, a protective layer is formed on the target light transmission layer to obtain the display panel, and the effect at this time is shown in (7) in FIG. 6.
  • a blue excitation light source, a green excitation light source, and a red excitation light source can be provided.
  • the corresponding sub-pixel unit does not need to prepare a target light conversion layer, and a transparent material can be used to fill It will be flat, and it will get the target light without mixing with other colors.
  • the other target light can also get pure target light or even pure color target light;
  • a near-ultraviolet excitation light source can be used, and only by correspondingly changing the excitation light transmission layer, the target light conversion layer, and adding the corresponding target light transmission layer can obtain pure target light or even pure color target light.
  • a groove may be formed by digging holes to set up sub-pixels, and a photopolymerization layer is prepared around each sub-pixel, thereby preventing the target light from being emitted at an excessive angle, beam-forming the target light, and preventing adjacent sub-pixels There is crosstalk between them to improve the display quality; and by preparing a photopolymerization layer between adjacent subpixels, the adjacent subpixel units share the photopolymerization layer, and by increasing the height of the photopolymerization layer, it can effectively prevent the subpixels Crosstalk occurs, which improves target optical purity and improves display quality.
  • the excitation light transmissive layer can be made on the light exit surface of the excitation light source by evaporation or magnetron sputtering inorganic material, or the excitation light transmissive layer can be made of hot-pressed organic material Is made on the light exit surface of the excitation light source;
  • the inorganic materials include titanium dioxide, aluminum oxide, silicon dioxide, zinc sulfide, etc.
  • the organic materials include PET (polyethylene terephthalate), PMMA ( Polymethyl methacrylate) and resin;
  • the target light conversion layer can be made by vapor deposition of quantum dots or phosphors, and the photopolymerization layer can be made of resin, silica gel or other conductive media .
  • Embodiments of the present application provide a display panel and a method for manufacturing the same.
  • the display panel includes a sub-pixel unit. At least part of the sub-pixel unit includes an excitation light source, a target light conversion layer, and a target light transmission layer.
  • the excitation light source is used to generate an excitation.
  • the target light conversion layer is provided in the light exit direction of the excitation light source for converting the excitation light into target light
  • the target light transmission layer is provided in the light exit direction of the target light conversion layer ,
  • the target light is transmitted, and the excitation light passing through the target light conversion layer is reflected, so that the emitted target light is mixed with a small amount of excitation light or no excitation light, so that the target light emitted by the sub-pixel unit is pure, which solves the problem
  • the existing micro display technology has the technical problems of defects; and because the excitation light will be reflected back to the target light conversion layer by the target light transmission layer, and then converted into the target light again, the thickness of the color conversion layer is reduced, and the cost can be saved; and Setting a photopolymerization layer around the sub-pixel units will

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

一种显示面板及其制备方法，显示面板通过在目标光转换层上设置目标光透过层，使得穿过目标光转换层的目标光透过，而穿过目标光转换层的激发光被反射，使得出射的目标光少量混有激发光甚至不混有激发光，使得子像素单元出射的目标光较纯，从而解决了现有微显示技术存在缺陷的技术问题。

Description

显示面板及其制备方法 技术领域
本申请涉及一种显示技术领域，尤其是涉及一种显示面板及其制备方法。
 背景技术
LCD（液晶显示器）和OLED(有机发光二极管显示器)作为主流显示设备，各有优劣：LCD光利用率低、分辨率不高，OLED寿命短、亮度低，所有，需要开发综合效果更优的显示设备，如QLED（量子点发光二极管）、mini-LED（迷你发光二极管）以及终极微显示技术，如micro LED（微型发光二极管）、QLED显示。
Micro LED具有光效高、低功耗、高色域、寿命长、稳定性好等优点，目前Micro LED大体分为两种类型，一种是采用RGB（红绿蓝）三种颜色的micro LED作为子像素，但在将其转移到驱动基板上时，转移效率较低；而另一种如图1所示，通过使用近紫外微型发光二极管，在光源上设置光转换层，将近紫外光转换为红绿蓝三色光，这种方式较容易实现，但会出现红绿蓝三色光中混有近紫外光，导致色饱和度低，且子像素单元出光角度大，子像素单元之间易发生颜色串扰。
所有，现有的微显示技术存在缺陷，需要改进。
 技术问题
本申请提供一种显示面板及其制备方法，用以解决现有微显示技术存在缺陷的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种显示面板，其包括子像素单元，至少部分子像素单元包括：
激发光源，用于产生激发光；
目标光转换层，设置于所述激发光源的出光方向上，用于将所述激发光转换为目标光；
目标光透过层，设置于所述目标光转换层的出光方向上，用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光。
在本申请提供的显示面板中，所述目标光透过层形成于所述目标光转换层的出光面上，将穿过所述目标光转换层的激发光反射至所述目标光转换层。
在本申请提供的显示面板中，还包括激发光透过层，所述激发光透光层设置于所述激发光源的出光方向上，位于所述激发光源与所述目标光转换层之间。
在本申请提供的显示面板中，所述激发光透过层形成于所述激发光源的出光面上。
在本申请提供的显示面板中，所述目标光转换层形成于所述激发光透过层的出光面上。
在本申请提供的显示面板中，所述激发光透过层、目标光转换层、目标光透过层的总厚度为200纳米至500纳米。
在本申请提供的显示面板中，还包括光聚合层，设置于相邻子像素单元之间，用于将子像素单元发出的目标光聚合。
在本申请提供的显示面板中，所述光聚合层围绕子像素单元的侧边设置。
在本申请提供的显示面板中，所述光聚合层围绕目标光转换层和目标光透过层的侧边设置。
在本申请提供的显示面板中，所述光聚合层围绕激发光透过层、目标光转换层和目标光透过层的侧边设置。
本申请实施例还提供了一种显示面板制备方法，其包括：
提供基板；
在所述基板上形成子像素单元驱动电路层；
在所述驱动电路层上形成子像素单元固定构件；
在所述固定构件内固定激发光源，所述光源用于产生激发光；
在至少部分激发光源的出光方向上形成目标光转换层，所述目标光转换层用于将所述激发光转换为目标光；
在所述目标光转换层的出光方向上形成目标光透过层，所述目标光透过层用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光；
在所述目标光透过层上形成保护层，得到所述显示面板。
在本申请的显示面板制备方法中，所述在所述目标光转换层的出光方向上形成目标光透过层的步骤包括在所述目标光转换层的出光面上形成目标光透过层。
在本申请的显示面板制备方法中，还包括在所述激发光源的出光方向上形成激发光透过层。
在本申请的显示面板制备方法中，所述在所述激发光源的出光方向上形成激发光透过层的步骤包括在所述激发光源的出光面上形成激发光透过层。
在本申请的显示面板制备方法中，还包括在所述激发光透过层的出光面上形成目标光转换层。
在本申请的显示面板制备方法中，所述在所述激发光源的出光方向上形成激发光透过层的步骤包括在所述激发光源的出光面上蒸镀无机材料形成激发光透过层。
在本申请的显示面板制备方法中，还包括在相邻子像素单元之间形成光聚合层，所述光聚合层用于将子像素单元发出的光聚合。
在本申请的显示面板制备方法中，所述在相邻子像素单元之间形成光聚合层的步骤包括围绕所述子像素单元的侧边形成所述光聚合层。
在本申请的显示面板制备方法中，所述在相邻子像素单元之间形成光聚合层的步骤包括围绕所述目标光转换层和所述目标光透过层的侧边形成所述光聚合层。
在本申请的显示面板制备方法中，所述在相邻子像素单元之间形成光聚合层的步骤包括围绕所述激发光透过层、所述目标光转换层和所述目标光透过层的侧边形成所述光聚合层。
 有益效果
本申请提供一种显示面板及其制备方法，该显示面板包括子像素单元，至少部分子像素单元包括激发光源、目标光转换层和目标光透过层，所述激发光源用于产生激发光，所述目标光转换层设置于所述激发光源的出光方向上，用于将所述激发光转换为目标光，所述目标光透过层设置于所述目标光转换层的出光方向上，用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光；通过在目标光转换层上设置目标光透过层，通过在目标光转换层上设置目标光透过层，仅穿过目标光转换层的目标光，而反射激发光，增强了子像素单元出射的目标光纯度，从而一定程度了缓解了现有微显示技术存在的色饱和度低等缺陷。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术提供的显示面板的结构示意图。
图2为本申请实施例提供的显示面板的第一种结构示意图。
图3为本申请实施例提供的显示面板的第二种结构示意图。
图4为本申请实施例提供的显示面板制备方法的流程图。
图5为本申请实施例提供的显示面板制备过程的第一种示意图。
图6为本申请实施例提供的显示面板制备过程的第二种示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请针对现有微显示技术存在缺陷的技术问题，本申请实施例可以解决该问题。
如图1所示，现有显示面板中子像素单元包括激发光源11和光转换层，所述光转换层包括红光转换层121，绿光转换层122和蓝光转换层123，设所述激发光源为蓝色微型发光二极管，激发光源发出的激发光经过光转换层转换为相应颜色的光，但由于部分激发光会穿过光转换层，造成出射的光分别为红光与蓝光的混色光131，绿光与蓝光的混色光132，以及蓝光133，则在显示时由于红绿光不纯，造成显示的色饱和度不够，且相邻的子像素单元之间不同色光会串扰，进一步加大问题，所以，现有微显示技术存在缺陷。
如图2或图3所示，本申请实施例提供一种显示面板，该显示面板包括子像素单元，所述子像素单元包括：
激发光源21，用于产生激发光；
目标光转换层24（包括图2中的241和242），设置于所述激发光源的出光方向上，用于将所述激发光转换为目标光；
目标光透过层25（包括图2中的251和252），设置于所述目标光转换层的出光方向上，用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光。
在一种实施例中，所述目标光透过层形成于所述目标光转换层的出光面上，将穿过所述目标光转换层的激发光反射至所述目标光转换层。
在一种实施例中，显示面板还包括激发光透过层，所述激发光透光层设置于所述激发光源的出光方向上，位于所述激发光源与所述目标光转换层之间。
在一种实施例中，所述激发光透过层形成于所述激发光源的出光面上。
在一种实施例中，所述目标光转换层形成于所述激发光透过层的出光面上。
在一种实施例中，所述激发光透过层、目标光转换层、目标光透过层的总厚度为200纳米至500纳米。
在一种实施例中，显示面板还包括光聚合层，设置于相邻子像素单元之间，用于将子像素单元发出的目标光聚合。
在一种实施例中，所述光聚合层围绕子像素单元的侧边设置。
在一种实施例中，所述光聚合层围绕目标光转换层和目标光透过层的侧边设置。
在一种实施例中，所述光聚合层围绕激发光透过层、目标光转换层和目标光透过层的侧边设置。
本实施例提供了一种显示面板，该显示面板包括子像素单元，至少部分子像素单元包括激发光源、目标光转换层和目标光透过层，所述激发光源用于产生激发光，所述目标光转换层设置于所述激发光源的出光方向上，用于将所述激发光转换为目标光，所述目标光透过层设置于所述目标光转换层的出光方向上，用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光；通过在目标光转换层上设置目标光透过层，通过在目标光转换层上设置目标光透过层，仅穿过目标光转换层的目标光，而反射激发光，增强了子像素单元出射的目标光纯度，从而一定程度了缓解了现有微显示技术存在的色饱和度低等缺陷。
在一种实施例中，激发光源21所产生的激发光也是子像素的目标光色（红、绿、蓝、白等）中一种，此时，显示面板的子像素形成如图2所示，具体的，以激发光源21为蓝光LED为例，子像素单元包括：激发光源21，激发光透过层22，光聚合层23，目标光转换层24（包括图2中的241和242）和目标光透过层25（包括图2中的251和252），所述激发光源为蓝色激发光源21，所述激发光透过层为蓝光透过层22，所述目标光转换层包括红光转换层241和绿光转换层242，所述目标光透过层包括红光透过层251和绿光透过层252。
在一种实施例中，在所述蓝色激发光源21的出光面上设置有所述蓝光透过层22，在所述蓝光透光层22的出光面上设置有相应的红光转换层241和绿光转换层242，在红光转换层241的出光面上设置有红光透过层251，在绿光转换层242的出光面上设置有绿光透过层252，所述蓝色激发光源发出的蓝色激发光穿过目标光转换层和目标光透过层得到红光261、绿光262和蓝光263。
在一种实施例中，激发光源21可以为蓝光LED、红光LED、绿光LED、白光LED中的任意一种。
在一种实施例中，激发光源所产生的激发光不是子像素的目标光色（红、绿、蓝、白等）中一种，此时，显示面板的子像素形成如图3所示，具体的，以激发光源为紫光LED为例，子像素单元包括：激发光源31，激发光透过层32，光聚合层33，目标光转换层和目标光透过层，所述激发光源为近紫外激发光源31，所述激发光透过层为近紫外光透过层32，所述目标光转换层包括红光转换层341、绿光转换层342和蓝光转换层343，所述目标光透过层包括红光透过层351、绿光透过层352和蓝光透过层353。
在一种实施例中，在所述近紫外激发光源31的出光面上设置有近紫外光透过层32，在所述近紫外光透过层32的出光面上设置有红光转换层341、绿光转换层342和蓝光转换层343，在所述红光转换层341的出光面上设置有红光透过层351，在所述绿光转换层342的出光面上设置有绿光透过层352，在所述蓝光转换层343的出光面上设置有蓝光透过层353，所述近紫外激发光穿过近紫外光透过层、目标光转换层和目标光透过层得到红光361、绿光362和蓝光363。
在本实施例中，在激发光源上设置激发光透过层，提高激发光的透过率，目标光转换层上设置有目标光透过层，激发光源发出的激发光在通过目标光转换层转换为目标光与激发光的混色光后，在穿过目标光透过层时，目标光出射，而激发光将被反射，使得得到的目标光混有较少的激发光甚至不混有激发光，使得得到的目标光较纯，从而提高显示的色饱和度，缓解微显示技术的缺陷。
在一种实施例中，激发光在穿过目标光透过层时会被反射，从而再次激发目标光转换层转换为目标光射出，而激发光透过层将有效的防止反射回的激发光转换为目标光后与激发光源射出的激发光混色，从而影响激发光的纯度，且由于激发光会再次激发目标光转换层射出目标光，使得目标光转换层的厚度可以降低，例如，激发光透过层、目标光转换层、目标光透过层的总厚度为200纳米至500纳米，降低厚度且可以降低成本。
在一种实施例中，通过调节目标光透过层的透过率来透过目标光以及反射激发光，例如，调节红光透过层使其透射波段为红光波长，从而将蓝色激发光反射，使得出射的目标光较纯，提高色饱和度和显示质量。
在一种实施例中，围绕所述子像素单元设置有光聚合层，针对相邻子像素单元之间的目标光会串扰，增加光聚合层将有效的防止目标光的出射角度过大，从而使目标光之间不出现串扰，提高目标光的纯度。
在一种实施例中，所述光聚合层围绕目标光转换层和目标光透过层的侧边设置。
在一种实施例中，所述光聚合层围绕激发光透过层、目标光转换层和目标光透过层的侧边设置，通过设置光聚合层，可以防止相邻子像素单元之间出现串扰，且可将目标光透过层发射的激发光聚合到目标光转换层，进一步的降低目标光转换层的厚度。
在一种实施例中，相邻子像素单元可以采用同一光聚合层，或者各个子像素单元侧边均设有光聚合层，针对不同的设置方法，可以通过不同程度的提高光聚合层的高度来防止相邻子像素单元出现串扰，从而提高目标光的纯度，缓解现有微显示技术的缺陷。
为了制备上述的显示面板，本申请实施例还提供了一种显示面板制备方法，如图4所示，本实施例提供一种显示面板制备方法包括以下步骤：
S401,提供基板；
S402，在所述基板上形成子像素单元驱动电路层；
S403，在所述驱动电路层上形成子像素单元固定构件，如凹槽等；
S404，在所述固定构件内固定激发光源，所述光源用于产生激发光；
S405，在至少部分激发光源的出光方向上形成目标光转换层，所述目标光转换层用于将所述激发光转换为目标光；
S406，在所述目标光转换层的出光方向上形成目标光透过层，所述目标光透过层用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光；
S407，在所述目标光透过层上形成保护层，得到所述显示面板。
在一种实施例中，所述在所述目标光转换层的出光方向上形成目标光透过层的步骤：包括在所述目标光转换层的出光面上形成目标光透过层。
在一种实施例中，图4所示的显示面板制备方法还包括：在所述激发光源的出光方向上形成激发光透过层。
在一种实施例中，所述在所述激发光源的出光方向上形成激发光透过层的步骤包括：在所述激发光源的出光面上形成激发光透过层。
在一种实施例中，图4所示的显示面板制备方法还包括：在所述激发光透过层的出光面上形成目标光转换层。
在一种实施例中，所述在所述激发光源的出光方向上形成激发光透过层的步骤包括在所述激发光源的出光面上蒸镀无机材料形成激发光透过层。
在一种实施例中，图4所示的显示面板制备方法还包括：在相邻子像素单元之间形成光聚合层，所述光聚合层用于将子像素单元发出的光聚合。
在一种实施例中，所述在相邻子像素单元之间形成光聚合层的步骤包括：围绕所述子像素单元的侧边形成所述光聚合层。
在一种实施例中，所述在相邻子像素单元之间形成光聚合层的步骤包括：围绕所述目标光转换层和所述目标光透过层的侧边形成所述光聚合层。
在一种实施例中，所述在相邻子像素单元之间形成光聚合层的步骤包括：围绕所述激发光透过层、所述目标光转换层和所述目标光透过层的侧边形成所述光聚合层。
本实施例提供了一种显示面板制备方法，该方法得到的显示面板包括子像素单元，至少部分子像素单元包括激发光源、目标光转换层和目标光透过层，所述激发光源用于产生激发光，所述目标光转换层设置于所述激发光源的出光方向上，用于将所述激发光转换为目标光，所述目标光透过层设置于所述目标光转换层的出光方向上，用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光；通过在目标光转换层上设置目标光透过层，通过在目标光转换层上设置目标光透过层，仅穿过目标光转换层的目标光，而反射激发光，增强了子像素单元出射的目标光纯度，从而一定程度了缓解了现有微显示技术存在的色饱和度低等缺陷。
现以激发光源为蓝光LED为例对本申请的制备方法进行说明。本申请实施例提供一种显示面板制备方法包括：
步骤51，在基板上子像素对应位置形成固定凹槽，用于固定蓝光LED作为激发光源，固定结构如图5中（1）所示；
步骤52，在基板上所有子像素对应位置，即固定凹槽内固定蓝光LED作为激发光源，固定结构如图5中（2）所示；
步骤53，使用掩膜板等，在基板上子像素对应位置形成激发光透过层，即在蓝色激发光源的出光面上形成蓝光透过层，在蓝色子像素对应位置形成蓝光透过层的厚度大于红光子像素对应位置和绿光子像素对应位置，此时效果如图5中（3）所示；
步骤54，在目标子像素对应位置形成目标光转换层，即在红光子像素对应位置的蓝光透过层出光面上形成红光转换层，在绿光子像素对应位置的蓝光透过层出光面上形成绿光转换层，此时效果如图5中（4）所示；
步骤55，在目标子像素对应位置形成目标光透过层，即在红光子像素对应位置的红光转换层出光面上形成红光透过层，在绿光子像素对应位置的绿光转换层出光面上形成绿光透过层，此时效果如图5中（5）所示；
步骤56，在所有子像素的侧边形成光聚合层，即分别围绕子像素单元的侧边形成光聚合层，此时效果如图5中（6）所示；
步骤57，在基板上形成保护层，即在所述目标光透过层上形成保护层，得到所述显示面板，此时效果如图5中（7）所示。
现以激发光源为紫光LED为例对本申请的制备方法进行说明。本申请实施例提供一种显示面板制备方法包括：
步骤61，在基板上子像素对应位置形成固定凹槽，用于固定紫光LED作为激发光源，固定结构如图6中（1）所示；
步骤62，在基板上所有子像素对应位置，即固定凹槽内固定紫光LED作为激发光源，固定结构如图6中（2）所示；
步骤63，使用掩膜板等，在基板上所有子像素对应位置形成激发光透过层，即在所有紫色激发光源的出光面上形成紫光透过层，此时效果如图6中（3）所示；
步骤64，在目标子像素对应位置形成目标光转换层，即在红光子像素对应位置的紫光透过层出光面上形成红光转换层，在绿光子像素对应位置的紫光透过层出光面上形成绿光转换层，在蓝光子像素对应位置的紫光透过层出光面上形成蓝光转换层，此时效果如图6中（4）所示；
步骤65，在目标子像素对应位置形成目标光透过层，即在红光子像素对应位置的红光转换层出光面上形成红光透过层，在绿光子像素对应位置的绿光转换层出光面上形成绿光透过层，在蓝光子像素对应位置的蓝光转换出光面上形成蓝光透过层，此时效果如图6中（5）所示；
步骤66，在所有子像素的侧边形成光聚合层，即分别围绕子像素单元的侧边形成光聚合层，此时效果如图6中（6）所示；
步骤67，在基板上形成保护层，即在所述目标光透过层上形成保护层，得到所述显示面板，此时效果如图6中（7）所示。
在一种实施例中，在提供激发光源时，可以提供蓝色激发光源、绿色激发光源、红色激发光源，对不同激发光源，相应的子像素单元无需制备目标光转换层，可采用透明材料填平，且会得到不混有其他颜色的目标光，而其他的目标光在通过相应的目标光转换层和目标光透光层后，也能得到较纯的目标光甚至纯色的目标光；还可以采用近紫外激发光源，只需相应的改变激发光透光层、目标光转换层以及增加相应的目标光透光层即可得到较纯的目标光甚至纯色的目标光。
在一种实施例中，可以通过挖孔形成凹槽，以设置子像素，围绕每个子像素制备光聚合层，从而防止目标光出射角度过大，对目标光进行束型，防止相邻子像素之间出现串扰，提高显示质量；且可以通过在相邻子像素之间制备光聚合层，使相邻子像素单元共用光聚合层，通过提高光聚合层的高度，可以有效防止子像素之间出现串扰，提高目标光纯度，提高显示质量。
在一种实施例中，所述激发光透光层可以采用蒸镀或者磁控溅射无机材料的方式制成在激发光源的出光面上，或者所述激发光透光层采用热压有机材料的方式制成在激发光源的出光面上；所述无机材料包括二氧化钛、氧化铝、二氧化硅、硫化锌等，所述有机材料包括PET（聚对苯二甲酸乙二醇酯）、PMMA（聚甲基丙烯酸甲酯）以及树脂等；在本申请实施例中，目标光转换层可通过蒸镀量子点或者荧光粉的方式制成，光聚合层可以采用树脂、硅胶或者其他导电介质制成。
根据以上实施例可知：
本申请实施例提供一种显示面板及其制备方法，该显示面板包括子像素单元，至少部分子像素单元包括激发光源、目标光转换层和目标光透过层，所述激发光源用于产生激发光，所述目标光转换层设置于所述激发光源的出光方向上，用于将所述激发光转换为目标光，所述目标光透过层设置于所述目标光转换层的出光方向上，用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光；通过在目标光转换层上设置目标光透过层，使得穿过目标光转换层的目标光透过，而穿过目标光转换层的激发光被反射，使得出射的目标光少量混有激发光甚至不混有激发光，使得子像素单元出射的目标光较纯，从而解决了现有微显示技术存在缺陷的技术问题；且由于激发光会被目标光透过层反射回目标光转换层，从而再次转换为目标光，使得色转换层的厚度降低，且可以节省成本；而围绕子像素单元设置光聚合层，将有效的防止子像素单元之间出现串扰，且有助于降低目标光转换层的厚度。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种显示面板，其包括子像素单元，至少部分子像素单元包括：
    激发光源，用于产生激发光；
    目标光转换层，设置于所述激发光源的出光方向上，用于将所述激发光转换为目标光；
    目标光透过层，设置于所述目标光转换层的出光方向上，用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光。
  2. 如权利要求1所述的显示面板，其中，所述目标光透过层形成于所述目标光转换层的出光面上，将穿过所述目标光转换层的激发光反射至所述目标光转换层。
  3. 如权利要求1所述的显示面板，其中，还包括激发光透过层，所述激发光透光层设置于所述激发光源的出光方向上，位于所述激发光源与所述目标光转换层之间。
  4. 如权利要求3所述的显示面板，其中，所述激发光透过层形成于所述激发光源的出光面上。
  5. 如权利要求3所述的显示面板，其中，所述目标光转换层形成于所述激发光透过层的出光面上。
  6. 如权利要求1所述的显示面板，其中，所述激发光透过层、目标光转换层、目标光透过层的总厚度为200纳米至500纳米。
  7. 如权利要求3所述的显示面板，其中，还包括光聚合层，设置于相邻子像素单元之间，用于将子像素单元发出的目标光聚合。
  8. 如权利要求7所述的显示面板，其中，所述光聚合层围绕子像素单元的侧边设置。
  9. 如权利要求7所述的显示面板，其中，所述光聚合层围绕目标光转换层和目标光透过层的侧边设置。
  10. 如权利要求7所述的显示面板，其中，所述光聚合层围绕激发光透过层、目标光转换层和目标光透过层的侧边设置。
  11. 一种显示面板制备方法，其包括：
    提供基板；
    在所述基板上形成子像素单元驱动电路层；
    在所述驱动电路层上形成子像素单元固定构件；
    在所述固定构件内固定激发光源，所述光源用于产生激发光；
    在至少部分激发光源的出光方向上形成目标光转换层，所述目标光转换层用于将所述激发光转换为目标光；
    在所述目标光转换层的出光方向上形成目标光透过层，所述目标光透过层用于透过所述光转换层生成的目标光，并反射穿过所述目标光转换层的激发光；
    在所述目标光透过层上形成保护层，得到所述显示面板。
  12. 如权利要求11所述的显示面板制备方法，其中，所述在所述目标光转换层的出光方向上形成目标光透过层的步骤包括在所述目标光转换层的出光面上形成目标光透过层。
  13. 如权利要求11所述的显示面板制备方法，其中，还包括在所述激发光源的出光方向上形成激发光透过层。
  14. 如权利要求13所述的显示面板制备方法，其中，所述在所述激发光源的出光方向上形成激发光透过层的步骤包括在所述激发光源的出光面上形成激发光透过层。
  15. 如权利要求13所述的显示面板制备方法，其中，还包括在所述激发光透过层的出光面上形成目标光转换层。
  16. 如权利要求13所述的显示面板制备方法，其中，所述在所述激发光源的出光方向上形成激发光透过层的步骤包括在所述激发光源的出光面上蒸镀无机材料形成激发光透过层。
  17. 如权利要求13所述的显示面板制备方法，其中，还包括在相邻子像素单元之间形成光聚合层，所述光聚合层用于将子像素单元发出的光聚合。
  18. 如权利要求17所述的显示面板制备方法，其中，所述在相邻子像素单元之间形成光聚合层的步骤包括围绕所述子像素单元的侧边形成所述光聚合层。
  19. 如权利要求17所述的显示面板制备方法，其中，所述在相邻子像素单元之间形成光聚合层的步骤包括围绕所述目标光转换层和所述目标光透过层的侧边形成所述光聚合层。
  20. 如权利要求17所述的显示面板制备方法，其中，所述在相邻子像素单元之间形成光聚合层的步骤包括围绕所述激发光透过层、所述目标光转换层和所述目标光透过层的侧边形成所述光聚合层。
PCT/CN2019/083025 2018-12-29 2019-04-17 显示面板及其制备方法 Ceased WO2020133816A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/475,135 US10978509B2 (en) 2018-12-29 2019-04-17 Display panel and manufacturing method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811644935.8 2018-12-29
CN201811644935.8A CN109599037B (zh) 2018-12-29 2018-12-29 显示面板及其制备方法

Publications (1)

Publication Number Publication Date
WO2020133816A1 true WO2020133816A1 (zh) 2020-07-02

Family

ID=65965693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/083025 Ceased WO2020133816A1 (zh) 2018-12-29 2019-04-17 显示面板及其制备方法

Country Status (3)

Country Link
US (1) US10978509B2 (zh)
CN (1) CN109599037B (zh)
WO (1) WO2020133816A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109599037B (zh) * 2018-12-29 2020-07-10 武汉华星光电技术有限公司 显示面板及其制备方法
CN113066830B (zh) * 2021-03-16 2022-07-01 京东方科技集团股份有限公司 一种显示面板及其制备方法、显示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106773287A (zh) * 2016-12-06 2017-05-31 青岛海信电器股份有限公司 一种封装量子点材料显示面板以及包含该面板的背光模组
CN106941108A (zh) * 2017-05-23 2017-07-11 深圳市华星光电技术有限公司 微发光二极管显示面板及其制作方法
US20180097033A1 (en) * 2016-09-30 2018-04-05 Khaled Ahmed Micro-led displays
CN107993583A (zh) * 2017-11-27 2018-05-04 武汉华星光电技术有限公司 微型发光二极管显示装置及其制作方法
CN108766273A (zh) * 2018-08-15 2018-11-06 南方科技大学 一种微型发光二极管显示面板及显示装置
CN109599037A (zh) * 2018-12-29 2019-04-09 武汉华星光电技术有限公司 显示面板及其制备方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201185179Y (zh) * 2007-01-19 2009-01-21 金益世股份有限公司 背光模组
CN100504543C (zh) * 2007-03-06 2009-06-24 孙润光 显示装置以及含有该显示装置的手机、计算机和电视机
CN203275836U (zh) * 2013-06-25 2013-11-06 京东方科技集团股份有限公司 显示装置
CN104752620A (zh) * 2013-12-26 2015-07-01 业鑫科技顾问股份有限公司 颜色转换层、有机电致发光显示面板及液晶显示面板
US11024492B2 (en) * 2015-07-07 2021-06-01 Institute For Systems Biology Method to obtain unbiased identification of interaction of test compounds with the proteome
CN105044975A (zh) * 2015-08-31 2015-11-11 京东方科技集团股份有限公司 一种液晶显示装置
CN105589250A (zh) * 2016-02-05 2016-05-18 京东方科技集团股份有限公司 一种显示基板、显示面板、显示装置及制作方法
US10620478B2 (en) * 2016-05-30 2020-04-14 Maven Optronics Co., Ltd. Photoluminescent display device and method for manufacturing the same
CN106526965A (zh) * 2016-12-06 2017-03-22 青岛海信电器股份有限公司 一种封装量子点材料显示面板以及包含该面板的背光模组
CN108257949B (zh) * 2018-01-24 2020-02-07 福州大学 可实现光效提取和色彩转换微米级led显示装置及制造方法
US10468635B2 (en) 2018-01-31 2019-11-05 Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Organic light-emitting device having high contrast ratio
CN108172608A (zh) * 2018-01-31 2018-06-15 武汉华星光电半导体显示技术有限公司 高对比度的有机发光显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180097033A1 (en) * 2016-09-30 2018-04-05 Khaled Ahmed Micro-led displays
CN106773287A (zh) * 2016-12-06 2017-05-31 青岛海信电器股份有限公司 一种封装量子点材料显示面板以及包含该面板的背光模组
CN106941108A (zh) * 2017-05-23 2017-07-11 深圳市华星光电技术有限公司 微发光二极管显示面板及其制作方法
CN107993583A (zh) * 2017-11-27 2018-05-04 武汉华星光电技术有限公司 微型发光二极管显示装置及其制作方法
CN108766273A (zh) * 2018-08-15 2018-11-06 南方科技大学 一种微型发光二极管显示面板及显示装置
CN109599037A (zh) * 2018-12-29 2019-04-09 武汉华星光电技术有限公司 显示面板及其制备方法

Also Published As

Publication number Publication date
US10978509B2 (en) 2021-04-13
US20200251523A1 (en) 2020-08-06
CN109599037B (zh) 2020-07-10
CN109599037A (zh) 2019-04-09

Similar Documents

Publication Publication Date Title
US11832495B2 (en) Display apparatus and manufacturing method therefor
US11480822B2 (en) Display substrate comprising a light-reflecting wall having a light-transmissive wall and a light-reflecting layer covering a top surface and side surfaces of the light-transmissive wall, method for manufacturing the same, and display device
TWI544620B (zh) 顯示面板
CN111509025A (zh) 基于量子点的显示面板及其制备方法、显示装置
WO2020037907A1 (zh) 有机发光显示面板及其制造方法
CN111710690B (zh) 一种基于量子点的led显示器及其制备方法
CN109979982A (zh) 有机发光显示面板及制备方法、显示装置
CN105467670A (zh) 一种阵列基板、显示面板及液晶显示器
US10690834B2 (en) Backlight device and manufacturing method thereof
WO2014176818A1 (zh) 液晶显示装置
WO2018120502A1 (zh) 背光模块及显示装置
WO2016086416A1 (zh) 一种量子点背光模组以及显示装置
WO2016026148A1 (zh) 背光模块及液晶显示装置
CN104776362B (zh) 背光模组和液晶显示器
CN104456191B (zh) 背光模块及液晶显示装置
US20220158109A1 (en) Flexible display panel, flexible display device and method of forming flexible display panel
WO2020025054A1 (zh) 一种发光装置及其制备方法
CN108845448B (zh) 一种改善量子点彩膜出光纯度的基板结构
CN110061045A (zh) 一种白光有机发光二极管显示面板
WO2020024839A1 (zh) 一种量子点三色led显示屏及其制备方法
CN112310143A (zh) 量子点微led显示器件及其制备方法
CN105911748A (zh) 一种彩膜基板及显示装置
CN108919558B (zh) 一种楔形基板的量子点彩膜结构
CN110473892B (zh) 显示装置
WO2020133816A1 (zh) 显示面板及其制备方法

Legal Events

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

Ref document number: 19904335

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19904335

Country of ref document: EP

Kind code of ref document: A1