WO2023108633A1 - Écran d'affichage et procédé de fabrication d'écran d'affichage - Google Patents

Écran d'affichage et procédé de fabrication d'écran d'affichage Download PDF

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Publication number
WO2023108633A1
WO2023108633A1 PCT/CN2021/139265 CN2021139265W WO2023108633A1 WO 2023108633 A1 WO2023108633 A1 WO 2023108633A1 CN 2021139265 W CN2021139265 W CN 2021139265W WO 2023108633 A1 WO2023108633 A1 WO 2023108633A1
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Prior art keywords
blue light
layer
emitting element
sub
pixel area
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PCT/CN2021/139265
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English (en)
Chinese (zh)
Inventor
樊勇
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厦门市芯颖显示科技有限公司
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Priority to PCT/CN2021/139265 priority Critical patent/WO2023108633A1/fr
Publication of WO2023108633A1 publication Critical patent/WO2023108633A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

Definitions

  • the present invention relates to the technical field of light emission and display, and in particular to a display panel and a manufacturing method of the display panel.
  • Quantum dot Quantum Dot, QD
  • Quantum dot materials can effectively improve the color gamut of the display screen by absorbing part of the blue light and excite part of the band of green and red light to meet the needs of high-quality display applications.
  • the Micro-LED (Microlight-emitting diode, micron light-emitting diode) color conversion display in the prior art has a high water and oxygen permeability, and water vapor easily enters the quantum dots, resulting in the failure of the quantum dots at the edge pixels and affecting the color conversion display. display quality of the screen.
  • embodiments of the present invention provide a display panel and a method for manufacturing the display panel.
  • an embodiment of the present invention provides a display panel, including: a driving substrate; a cover plate disposed opposite to the driving substrate; a retaining wall structure disposed on a side of the cover plate close to the driving substrate On the side and extending toward the driving substrate to form a plurality of spacing regions on the side of the cover plate close to the driving substrate, the plurality of spacing regions include red sub-pixel regions, green sub-pixel regions and blue sub-pixels Area: a plurality of blue light-emitting elements, arranged on the side of the drive substrate close to the cover plate, the plurality of blue light-emitting elements include a first blue light-emitting element, a second blue light-emitting element and a third blue light-emitting element color light-emitting elements, and the first blue light-emitting element, the second blue light-emitting element and the third blue light-emitting element are respectively arranged in the red sub-pixel area, the green sub-pixel area and the In the blue sub-pixel area
  • the reflective layer of the retaining wall is a metal layer, or a composite layer of a metal layer and a transparent medium layer.
  • the light reflection layer is a metal layer, or a composite layer of a metal layer and a transparent medium layer.
  • the display panel further includes: a blue light reflective layer disposed on the light-emitting side of the red sub-pixel region and the light-emitting side of the green sub-pixel region.
  • the blue light reflecting layer is a composite material layer
  • the composite material layer is a composite layer of a metal layer, a transparent medium layer and a distributed Bragg reflector structure layer, or a metal layer, a transparent medium A composite layer of layer and metal layer.
  • the display panel further includes: a color shift compensation film disposed on the light emitting side of the blue sub-pixel region.
  • the display panel further includes: a flat layer disposed between the plurality of blue light emitting elements and the driving substrate.
  • an embodiment of the present invention also provides a method for manufacturing a display panel, including: providing a first display substrate, including: providing a driving substrate; forming a light reflection layer on the driving substrate; A plurality of blue light-emitting elements are arranged at intervals, wherein the plurality of blue light-emitting elements are located on the side of the light reflection layer away from the driving substrate, and include a first blue light-emitting element, a second blue light-emitting element and The third blue light-emitting element; providing a second display substrate, including: providing a cover plate; forming a wall structure on the cover plate to form a plurality of spaced areas on the cover plate, wherein the multiple spaced areas include A red sub-pixel area, a green sub-pixel area and a blue sub-pixel area; a barrier wall reflective layer is formed on the surface of the barrier wall structure; a dot layer; and forming a green quantum dot layer on a side close to the cover plate in the green sub-pixel area; and
  • the barrier wall reflective layer on the surface of the barrier wall structure after forming the barrier wall reflective layer on the surface of the barrier wall structure, it further includes: forming a blue light reflective layer on the cover plate, and the blue light reflective layer is located in the red sub-pixel The light-emitting side of the region and the light-emitting side of the green sub-pixel region, but not located on the light-emitting side of the blue sub-pixel region.
  • the barrier wall reflective layer on the surface of the barrier wall structure, it further includes: forming a color shift compensation film on the cover plate, the color shift compensation film is located on the blue The light-emitting side of the color sub-pixel area.
  • the method further includes: forming a flat layer on the driving substrate.
  • an embodiment of the present invention also provides a method for manufacturing a display panel, including: providing a first display substrate, including: providing a driving substrate; and arranging a plurality of blue light-emitting elements at intervals on the driving substrate, wherein The plurality of blue light-emitting elements include a first blue light-emitting element, a second blue light-emitting element, and a third blue light-emitting element; providing a second display substrate includes: providing a cover plate; forming light on the cover plate A reflective layer; forming a barrier structure on the cover plate to form a plurality of spaced areas on the cover plate, wherein the multiple spaced areas include red sub-pixel areas, green sub-pixel areas and blue sub-pixel areas; A barrier reflective layer is formed on the surface of the barrier structure; a red quantum dot layer is formed in the red sub-pixel region, wherein the red quantum dot layer is located on the side of the light reflective layer away from the cover plate and forming a green quantum dot layer in the green sub
  • the driving substrate after the providing the driving substrate, it further includes: forming a blue light reflecting layer on the driving substrate, the blue light reflecting layer is located on the light emitting side of the red sub-pixel area and the green The light-emitting side of the sub-pixel area, but not located on the light-emitting side of the blue sub-pixel area.
  • the driving substrate after providing the driving substrate, further comprising: forming a color shift compensation film on the driving substrate, the color shift compensation film being located on the light emitting side of the blue sub-pixel region.
  • an embodiment of the present invention also provides a method for manufacturing a display panel, including: providing a first display substrate, including: providing a driving substrate; and arranging a plurality of blue light-emitting elements at intervals on the driving substrate, wherein The plurality of blue light-emitting elements include a first blue light-emitting element, a second blue light-emitting element, and a third blue light-emitting element; providing a second display substrate includes: providing a cover plate; forming a barrier on the cover plate A wall structure is used to form a plurality of interval regions on the cover plate, wherein the plurality of interval regions include red sub-pixel regions, green sub-pixel regions and blue sub-pixel regions; A wall reflective layer and a light reflective layer formed on the cover plate; a red quantum dot layer is formed in the red sub-pixel area, wherein the red quantum dot layer is located on the side of the light reflective layer away from the cover plate and forming a green quantum dot layer in the green sub-pixel area, where
  • the embodiments of the present invention set the barrier wall reflective layer on the barrier wall structure of the display panel, which narrows the channel for water vapor to enter the quantum dot layer, solves the problem of failure of the quantum dot layer of edge pixels, and improves the quality of the quantum dot layer.
  • the reliability of the layer through the setting of the light reflection layer, the unused blue light can be fully utilized, the utilization rate of blue light is improved, the light efficiency is improved, and the power consumption is reduced.
  • the unutilized blue light can be further fully utilized, the utilization rate of the blue light is improved, and the light efficiency is further improved.
  • blue light can pass through and a small amount of yellow light can be reflected, which can prevent the side of the light-emitting surface from reflecting blue light due to the blue light reflection layer in the red sub-pixel area and the green sub-pixel area in the dark state. Appears to be bluish.
  • FIG. 1 is a schematic structural diagram of a display panel provided in a first embodiment of the present application
  • FIG. 2 is another structural schematic diagram of the display panel provided by the first embodiment of the present application.
  • FIG. 3 is another structural schematic diagram of the display panel provided by the first embodiment of the present application.
  • FIG. 4 , FIG. 5A and FIG. 5B are schematic flow charts of the manufacturing method of the display panel provided by the first embodiment of the present application;
  • 6A and 6B are schematic diagrams of the manufacturing process of the display panel provided by the first embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a display panel provided in a second embodiment of the present application.
  • FIG. 8 is another schematic structural view of the display panel provided by the second embodiment of the present application.
  • FIG. 9 is another structural schematic diagram of the display panel provided by the second embodiment of the present application.
  • FIG. 10 is another schematic structural diagram of the display panel provided by the second embodiment of the present application.
  • FIG. 11 , FIG. 12A and FIG. 12B are schematic flowcharts of a method for manufacturing a display panel provided in the second embodiment of the present application;
  • FIGS. 13A and 13B are schematic diagrams of the manufacturing process of the display panel provided by the second embodiment of the present application.
  • FIG. 14 is a schematic flowchart of another manufacturing method of a display panel provided in the second embodiment of the present application.
  • FIG. 15 is a schematic diagram of the manufacturing process of the display panel provided in FIG. 14 with another manufacturing method.
  • a display panel 10 provided by the first embodiment of the present invention includes a driving substrate 600 , a cover plate 100 , a plurality of blue light-emitting elements 500 , a barrier structure 200 , a barrier reflective layer 310 , and a light reflective layer 320 , a red quantum dot layer 401 and a green quantum dot layer 402.
  • the driving substrate 600 may be, for example, a TFT array substrate, and the cover 100 and the driving substrate 600 are disposed opposite to each other.
  • the cover 100 may be, for example, a transparent cover, specifically, for example, a PI (Polyimide, polyimide) substrate.
  • the retaining wall structure 200 is disposed on the side of the cover plate 100 close to the drive substrate 600 and extends toward the drive substrate 600 to form a plurality of spacing regions 110 on the side of the cover plate 100 close to the drive substrate 600.
  • the plurality of spacing regions 110 include red A sub-pixel area 101 , a green sub-pixel area 102 and a blue sub-pixel area 103 .
  • a plurality of blue light-emitting elements 500 are arranged at intervals on the side of the drive substrate 600 close to the cover plate 100. Only six blue light-emitting elements 500 are shown in FIG. color Micro-LED, a plurality of blue light emitting elements 500 may include, for example, a first blue light emitting element 501, a second blue light emitting element 502 and a third blue light emitting element 503, the first blue light emitting element 501, the second blue light emitting element
  • the blue light-emitting element 502 and the third blue light-emitting element 503 are respectively arranged in the red sub-pixel area 101, the green sub-pixel area 102 and the blue sub-pixel area 103, and a plurality of blue light-emitting elements 500 can emit light in three blue colors, for example.
  • the elements 500 are taken as a group, and each group of blue light emitting elements 500 includes a first blue light emitting element 501 , a second blue light emitting element 502 and a third blue light emitting element 50
  • the wall reflective layer 310 is covered on the surface of the wall structure 200.
  • the wall structure 200 can be, for example, a black light-shielding wall (or black matrix), and of course it can also be other light-shielding walls.
  • the retaining wall structure 200 may, for example, include a first surface 210 covering the cover plate 100 and a second surface 220 close to the driving substrate 600
  • the retaining wall reflective layer 310 may, for example, cover the second surface of the retaining wall structure 200
  • the second surface 220 may, for example, include a first subsurface 202 close to the driving substrate 600, and a second subsurface 201 and a third subsurface 203 connecting the first subsurface 202 and the first surface 210, that is, a retaining wall.
  • the first sub-surface 202, the second sub-surface 201 and the third sub-surface 203 of the structure 200 are all covered with a wall reflective layer 310, and the wall reflective layer 310 can be, for example, a metal layer, or a composite layer of a metal layer and a transparent medium layer Specifically, it can be, for example, a metal layer/transparent medium layer/metal layer, or it can be, for example, a transparent medium layer/metal layer.
  • the transparent medium layer can be, for example, an organic material layer or a metal oxide layer or a metal nitride layer.
  • the wall reflective layer 310 is set as a composite layer of a metal layer and a transparent medium layer, which can further improve the adhesion of the retaining wall reflective layer 310 .
  • the light reflection layer 320 is arranged on the side of the driving substrate 600 close to the cover plate 100 and between the driving substrate 600 and the first blue light emitting element 501, the second blue light emitting element 502 and the third blue light emitting element 503, and the light reflection Specifically, the layer 320 can be disposed, for example, in the area directly below the red sub-pixel area 101 , the green sub-pixel area 102 and the blue sub-pixel area 103 .
  • the light reflective layer 320 can be, for example, a metal reflective layer with a patterned full visible light band, specifically a metal layer, or a composite material layer, specifically a composite layer of a transparent medium layer and a metal layer, or for example It is a composite layer of a metal layer, a transparent medium layer and a metal layer, and the transparent medium layer may be, for example, an organic layer, a metal oxide layer or a metal nitride layer.
  • the light reflection layer 320 can also be disposed on the entire area between the plurality of blue light emitting elements 500 and the driving substrate 600 , for example covering the entire surface of the driving substrate 600 on the side close to the blue light emitting elements 500 .
  • the display panel 10 may, for example, further include a flat layer 700, the flat layer 700 is arranged on the area of the driving substrate 600 that does not cover the light reflecting layer 320, so as to form a flat surface on the side close to the blue light emitting element 500, and a plurality of blue light emitting elements 500 are connected to the driving substrate through the light reflecting layer 320 600 are electrically connected, specifically, the light reflective layer 320 may also include multiple guide holes, and the multiple blue light emitting elements 500 may be electrically connected to the driving substrate 600 through the multiple guide holes on the light reflective layer 320, Certainly, the embodiments of the present invention are not limited thereto.
  • the red quantum dot layer 401 is disposed in the red sub-pixel area 101 and is located on the side of the first blue light-emitting element 501 close to the cover plate 100
  • the green quantum dot layer 402 is disposed in the green sub-pixel area 102 and is located on the second blue light-emitting element. 502 is close to the side of the cover plate 100 .
  • the display panel 10 may also include, for example, a blue light reflective layer 610, and the blue light reflective layer 610 may, for example, only be disposed on the light exit side of the red sub-pixel region 101 and the green sub-pixel region 102 on the light-emitting side of the blue sub-pixel region 103, but not on the light-emitting side of the blue sub-pixel region 103.
  • the light emitting sides of the red sub-pixel region 101 and the green sub-pixel region 102 can be, for example, the side close to the cover plate 100, and the blue light reflection layer 610 is arranged on the red sub-pixel region 101 and the green sub-pixel region 102 close to the cover plate 100.
  • the blue light reflective layer 610 can be, for example, a patterned blue light reflective layer, can be, for example, a composite material layer, specifically can be, for example, a composite layer of a metal layer, a transparent medium layer and a DBR (distributed Bragg reflection, distributed Bragg reflector) structural layer, or It can be, for example, a composite layer of a metal layer, a transparent medium layer and a metal layer.
  • a patterned blue light reflective layer can be, for example, a composite material layer, specifically can be, for example, a composite layer of a metal layer, a transparent medium layer and a DBR (distributed Bragg reflection, distributed Bragg reflector) structural layer, or It can be, for example, a composite layer of a metal layer, a transparent medium layer and a metal layer.
  • the unused blue light can be fully utilized, and the light efficiency is further improved.
  • the display panel 10 may further include a color shift compensation film 620, for example, the color shift compensation film 620 may be disposed on the light exit side of the blue sub-pixel region 103, and the blue sub-pixel region 103 may
  • the light exit side of the pixel area 103 can be, for example, the side close to the cover plate 100, and the color shift compensation film 620 can be set, for example, on the side of the blue sub-pixel area 103 close to the cover plate 100, that is, on the side of the blue sub-pixel area 103.
  • the color shift compensation film 620 can pass blue light and reflect a small amount of yellow light, which can avoid the reflection of blue light from the red sub-pixel and green sub-pixel on the side of the light-emitting surface in a dark state.
  • the layer reflects blue light and presents a bluish phenomenon.
  • the color shift compensation film 620 can be arranged only on the light emitting side of the blue sub-pixel area 103 but not on the light emitting side of the red sub-pixel area 101 and the light emitting side of the green sub-pixel area 102, for example, but this The embodiments of the invention are not limited thereto.
  • the first embodiment of the present invention provides a method for manufacturing a display panel to manufacture the display panel provided above.
  • the manufacturing method may, for example, include the following steps:
  • step S10 provides a first display substrate, which specifically includes:
  • step S20 provides a second display substrate, which specifically includes:
  • step S10 is before step S20, and in other embodiments, step S20 may also be before step S10, or step S10 and step S20 are performed synchronously, which is not limited in this embodiment of the present invention .
  • FIG. 6A shows the first display substrate 11, providing a driving substrate 600, and then forming a light reflection layer 320 on the driving substrate 600, and setting a plurality of blue light-emitting elements 500 at intervals on the driving substrate 600, and a plurality of The blue light emitting element 500 is located on the side of the light reflection layer 320 away from the driving substrate 600 , and includes a first blue element 501 , a second blue element 502 and a third blue element 503 .
  • the driving substrate 600 can be, for example, a TFT array substrate
  • the light reflective layer 320 can be, for example, a patterned metal reflective layer in the full visible light band
  • the plurality of blue light emitting elements 500 can be, for example, top-emitting blue Micro-LEDs.
  • the light reflective layer 320 may be disposed only on a partial area between the blue light emitting elements 500 and the driving substrate 600 , or may be disposed on the entire area between the blue light emitting elements 500 and the driving substrate 600 .
  • FIG. 6B is a second display substrate 12, and a cover plate 100 is provided.
  • the cover plate 100 can be, for example, a PI (Polyimide, polyimide) substrate, and of course it can also be other substrates. limit.
  • a wall structure 200 is formed on the cover plate 100 to form a plurality of spaced areas 110 on the cover plate 100.
  • the wall structure 200 can be, for example, a black light-shielding wall (or black matrix).
  • the spaced areas 110 formed by the wall structure 200 It can be, for example, a trapezoidal structure with a narrow top and a wide bottom.
  • the retaining wall structure 200 can also be a light-shielding retaining wall made of other materials, which is not limited in this embodiment.
  • the wall structure 200 may, for example, include a first surface 210 covering the cover plate 100 and a second surface 220 close to the drive substrate 600.
  • the wall reflective layer 310 may be, for example, Covering on the second surface 220 of the retaining wall structure 200, the second surface 220 may, for example, include a first subsurface 202 close to the driving substrate 600, a second subsurface 201 and a second subsurface connecting the first subsurface 202 and the first surface 210.
  • the three sub-surfaces 203 that is, the first sub-surface 202, the second sub-surface 201 and the third sub-surface 203 of the retaining wall structure 200 are all covered with a retaining wall reflective layer 310, and the retaining wall reflective layer 310 can be, for example, a metal layer or a metal layer.
  • a composite layer of a layer and a transparent medium layer can specifically be, for example, a metal layer/transparent medium layer/metal layer, or can be, for example, a transparent medium layer/metal layer, and the transparent medium layer can be, for example, an organic material layer or a metal oxide layer or metal nitride layer.
  • a red quantum dot layer is formed on the side near the cover plate 100 in the red sub-pixel region 101; and a green quantum dot layer is formed on the side near the cover plate 100 in the green sub-pixel region 102, for example, red quantum dots and green quantum dots can be made in advance.
  • quantum dots for example, prepare a red quantum dot layer solution and a green quantum dot layer solution by a solution method, and then perform surface treatment on the positions of the red sub-pixel area and the green sub-pixel area of the cover plate 100, specifically, for example, according to the red quantum dot layer
  • the characteristics of the solution and the green quantum dot layer solution are processed accordingly, and then the corresponding red quantum dot layer solution and the green quantum dot layer solution are sprayed on the positions of the corresponding red sub-pixel area and the green sub-pixel area.
  • An encapsulation protective layer is fabricated on the red quantum dot layer and the green quantum dot layer.
  • this is only for illustration, and this embodiment is not limited thereto.
  • Step S30 bonding the first display panel 11 and the second display panel 12 so that the first blue light-emitting element 501 is located in the red sub-pixel area 101, the second blue light-emitting element 502 is located in the green sub-pixel area 102, and the third The blue sub-pixel area 503 is located in the blue sub-pixel area 103, and the red quantum dot layer 401 and the green quantum dot layer 402 are respectively located on the side of the first blue light-emitting element 501 and the second blue light-emitting element 502 close to the cover plate 100 .
  • a barrier wall reflective layer on the surface of the barrier wall structure may further include: forming a blue light reflective layer on the cover plate, and the blue light reflective The layer is only located on the light exit side of the red sub-pixel area and the light exit side of the green sub-pixel area, but not on the light exit side of the blue sub-pixel area 103 .
  • the barrier wall reflection layer may further include: forming a color shift compensation film on the cover plate, the color The polarization compensation film is located on the light exit side of the blue sub-pixel area.
  • forming a light reflection layer on the driving substrate may further include: forming a flat layer on the driving substrate.
  • the embodiment of the present invention sets the barrier reflective layer on the barrier structure of the display panel, which narrows the channel for water vapor to enter the quantum dot layer, solves the problem of failure of the quantum dot layer of edge pixels, and improves the quantum dot layer.
  • the reliability of the layer through the setting of the light reflection layer, the unused blue light can be fully utilized, the utilization rate of blue light is improved, the light efficiency is improved, and the power consumption is reduced.
  • the unutilized blue light can be further fully utilized, the utilization rate of the blue light is improved, and the light efficiency is further improved.
  • blue light can pass through and a small amount of yellow light can be reflected, which can prevent the side of the light-emitting surface from reflecting blue light due to the blue light reflection layer in the red sub-pixel area and the green sub-pixel area in the dark state. Appears to be bluish.
  • a display panel 10 provided by the second embodiment of the present invention includes a driving substrate 600 , a cover plate 100 , a plurality of blue light emitting elements 500 , a barrier structure 200 , a barrier reflective layer 310 , and a light reflective layer 320 , a red quantum dot layer 401 and a green quantum dot layer 402.
  • the driving substrate 600 may be, for example, a TFT array substrate, and the cover 100 and the driving substrate 600 are disposed opposite to each other.
  • the cover 100 may be, for example, a transparent cover, specifically, for example, a PI (Polyimide, polyimide) substrate.
  • the retaining wall structure 200 is disposed on the side of the cover plate 100 close to the drive substrate 600 and extends toward the drive substrate 600 to form a plurality of spacing regions 110 on the side of the cover plate 100 close to the drive substrate 600.
  • the plurality of spacing regions 110 include red A sub-pixel area 101 , a green sub-pixel area 102 and a blue sub-pixel area 103 .
  • a plurality of blue light-emitting elements 500 are arranged at intervals on the side of the drive substrate 600 close to the cover plate 100. Only six blue light-emitting elements 500 are shown in FIG. 7 as an example.
  • the plurality of blue light-emitting elements 500 can be blue
  • the multiple blue light-emitting elements 500 may, for example, include a first blue light-emitting element 501, a second blue light-emitting element 502, and a third blue light-emitting element 503, and the multiple blue light-emitting elements 500 may, for example,
  • the blue light-emitting elements 500 are regarded as a group, and each group of blue light-emitting elements 500 includes a first blue light-emitting element 501 , a second blue light-emitting element 502 and a third blue light-emitting element 503 .
  • the wall reflective layer 310 is covered on the surface of the wall structure 200.
  • the wall structure 200 can be, for example, a black light-shielding wall (or black matrix), and of course it can also be other light-shielding walls.
  • the retaining wall structure 200 may, for example, include a first surface 210 covering the cover plate 100 and a second surface 220 close to the driving substrate 600
  • the retaining wall reflective layer 310 may, for example, cover the second surface of the retaining wall structure 200
  • the second surface 220 may, for example, include a first subsurface 202 close to the driving substrate 600, a second subsurface 201 and a third subsurface 203 connecting the first subsurface 202 and the first surface 210, that is, a retaining wall structure
  • the first sub-surface 202, the second sub-surface 201, and the third sub-surface 203 of the 200 are all covered with a wall reflective layer 310, and the wall reflective layer
  • the transparent medium layer can be, for example, an organic material layer or a metal oxide layer or a metal nitride layer.
  • the reflective layer 310 is set as a composite layer of a metal layer and a transparent medium layer, which can further improve the adhesion of the reflective layer 310 of the retaining wall.
  • the light reflection layer 320 is arranged on the side of the cover plate 100 close to the driving substrate 600 and between the cover plate 100 and the first blue light emitting element 501, the second blue light emitting element 502 and the third blue light emitting element 503, and the light reflection Layer 320 can be, for example, a metal reflective layer with a patterned full visible light band, specifically a metal layer, or a composite material layer, specifically a composite layer of a transparent medium layer and a metal layer, or a metal layer.
  • Layer, a composite layer of a transparent medium layer and a metal layer, the transparent medium layer may be, for example, an organic layer, a metal oxide layer or a metal nitride layer.
  • the red quantum dot layer 401 is disposed in the red sub-pixel region 101 and is located on the side of the first blue light-emitting element 501 close to the cover plate 100, for example, it can be disposed between the light reflection layer 320 and the first blue light-emitting element 501 and close to
  • the green quantum dot layer 402 is disposed on the green sub-pixel region 102 and on the side of the second blue light-emitting element 502 close to the cover plate 100, for example, it can be disposed on the light reflection layer 320 and the second blue One side of the light-emitting elements 502 is close to the light-reflecting layer 320 .
  • the barrier wall reflective layer 310 By setting the barrier wall reflective layer 310 on the barrier wall structure 200, the channel for water vapor to enter the quantum dot layer is narrowed, the problem of failure of the quantum dot layer at the edge pixels is solved, and the reliability of the quantum dot layer is improved.
  • the setting of 320 can reflect the blue light irradiated on the light reflection layer 320, make full use of the unused blue light, and further improve the light effect.
  • the light reflective layer 320 may, for example, be disposed on the entire surface of the cover plate 100 on the side close to the driving substrate 600 , specifically, it may include, for example, disposed on the cover plate 100 and the first blue light-emitting element 501 , the second blue
  • the first part between the blue light-emitting element 502 and the third blue light-emitting element 503, and the second part arranged between the cover plate 100 and the retaining wall structure 200, the first part and the second part can be, for example, integrated Forming, of course, the embodiments of the present invention are not limited thereto.
  • the display panel 10 may also include, for example, a blue light reflective layer 610 , and the blue light reflective layer 610 may, for example, only be disposed on the light exit side of the red sub-pixel region 101 and the green sub-pixel region 102 on the light-emitting side of the blue sub-pixel region 103, but not on the light-emitting side of the blue sub-pixel region 103.
  • the light emitting side of the red sub-pixel region 101 and the green sub-pixel region 102 can be, for example, the side close to the driving substrate 600, and the blue light reflection layer 610 is arranged on the red sub-pixel region 101 and the green sub-pixel region 102 close to the driving substrate 600.
  • the blue light reflective layer 610 can be, for example, a composite material layer, specifically, for example, a composite layer of a metal layer, a transparent medium layer, and a DBR (distributed Bragg reflection, distributed Bragg reflector) structural layer, and can also be, for example, a metal layer, a transparent medium layer Composite layer with metal layer.
  • a composite material layer specifically, for example, a composite layer of a metal layer, a transparent medium layer, and a DBR (distributed Bragg reflection, distributed Bragg reflector) structural layer, and can also be, for example, a metal layer, a transparent medium layer Composite layer with metal layer.
  • the unused blue light can be fully utilized, and the light efficiency is further improved.
  • the display panel 10 may also include, for example, a flat layer 700 disposed between the plurality of blue light emitting elements 500 and the driving substrate 600, thereby forming a flat surface on the side close to the blue light emitting elements 500, and the plurality of blue light emitting elements 500
  • the blue light reflective layer 610 is electrically connected to the driving substrate 600.
  • the blue light reflective layer 610 may also include multiple guide holes, and multiple blue light emitting elements 500 may pass through the multiple guide holes on the blue light reflective layer 610, for example. It is electrically connected with the driving substrate 600 , of course, the embodiment of the present invention is not limited thereto.
  • the display panel 10 may also include a color shift compensation film 620, for example, the color shift compensation film 620 may be disposed on the light exit side of the blue sub-pixel region 103, and the blue sub-pixel region
  • the light output side of the pixel area 103 can be, for example, the side close to the driving substrate 600, and the color shift compensation film 620 is arranged between the third blue light-emitting element 503 and the driving substrate 600, and the color shift compensation film 620 can pass blue light and reflect
  • a small amount of yellow light can avoid the phenomenon that the side of the light-emitting surface in the dark state appears bluish due to the blue light reflection layer of the red sub-pixel and the green sub-pixel reflecting blue light.
  • the color shift compensation film 620 can be arranged only on the light emitting side of the blue sub-pixel region 103 but not on the light emitting side of the red sub-pixel region 101 and the light-emitting side of the green sub-pixel region 102, for example.
  • the embodiments of the invention are not limited thereto.
  • the display panel 10 may also include, for example, a flat layer 700 disposed between the plurality of blue light emitting elements 500 and the driving substrate 600, thereby forming a flat surface on the side close to the blue light emitting elements 500, and the plurality of blue light emitting elements 500
  • the blue light reflective layer 610 or the color shift compensation film 620 is electrically connected to the driving substrate 600.
  • the blue light reflective layer 610 and the color shift compensation film 620 may also include a plurality of guide holes, and the plurality of blue light emitting elements 500 may be
  • the blue light reflection layer 610 and the color shift compensation film 620 are electrically connected to the driving substrate 600 through a plurality of guide holes.
  • the embodiment of the present invention is not limited thereto.
  • the second embodiment of the present invention provides a method for manufacturing a display panel to manufacture the display panel provided above.
  • the manufacturing method may, for example, include the following steps:
  • step S40 provides a first display substrate, which specifically includes:
  • step S50 provides a second display substrate, which specifically includes:
  • step S10 is before step S20, and in other embodiments, step S20 may also be before step S10, or step S10 and step S20 are performed at the same time, and this embodiment of the present invention is not limited here .
  • FIGS. 13A and 13B FIG. 13A shows the first display substrate 11.
  • a driving substrate 600 is provided, and then a plurality of blue light-emitting elements 500 are arranged at intervals on the driving substrate 600.
  • the driving substrate 600 can be, for example, a TFT array substrate.
  • the plurality of blue light-emitting elements 500 can be, for example, bottom-emitting blue Micro-LEDs, and the plurality of blue light-emitting elements 500 can be, for example, three blue light-emitting elements as a group, and the plurality of blue light-emitting elements 500 include the first blue A light emitting element 501 , a second blue light emitting element 502 and a third blue light emitting element 503 .
  • FIG. 13B is the second display substrate 12.
  • the cover plate 100 can be, for example, a PI (Polyimide, polyimide) substrate, and of course it can also be other substrates, which is not the case in this embodiment. limit.
  • a light reflection layer 320 is formed on the cover plate 100, and a retaining wall structure 200 is formed on the cover plate 100 to form a plurality of spaced areas 110 on the cover plate 100.
  • the multiple spaced areas 110 include red sub-pixel areas 101 and green sub-pixel areas.
  • the barrier structure 200 can be, for example, a black light-shielding barrier (or called a black matrix), and the interval area 110 formed by the barrier structure 200 can be, for example, a trapezoidal structure with a narrow top and a wide bottom.
  • the wall can also be a light-shielding retaining wall made of other materials. This embodiment is not limited thereto. Then, a retaining wall reflective layer 310 is formed on the retaining wall structure 200.
  • the retaining wall structure 200 can include, for example, a first The surface 210 and the second surface 220 close to the driving substrate 600, the wall reflective layer 310 may for example cover the second surface 220 of the wall structure 200, the second surface 220 may for example include the first sub-surface 202 close to the driving substrate 600 , the second subsurface 201 and the third subsurface 203 connecting the first subsurface 202 and the first surface 210, that is, the first subsurface 202, the second subsurface 201 and the third subsurface 203 of the retaining wall structure 200 all cover
  • the barrier reflective layer 310 can be, for example, a metal layer, or a composite layer of a metal layer and a transparent medium layer, specifically, it can be, for example, a metal layer/transparent medium layer/metal layer, or it can be, for example, a transparent medium layer /metal layer, the transparent medium layer can be, for example, an organic material layer or a metal oxide layer or a metal nitride layer.
  • a red quantum dot layer 401 is formed in the red sub-pixel region 101, wherein the red quantum dot layer 401 is located on the side of the light reflection layer 320 away from the cover plate 100, and a green quantum dot layer 402 is formed in the green sub-pixel region 102, wherein the green quantum dot layer 402
  • the dot layer 402 is located on a side of the light reflection layer 320 away from the cover plate 100 .
  • red quantum dots and green quantum dots can be prepared in advance, for example, the red quantum dot layer solution and the green quantum dot layer solution are prepared respectively by a solution method, and then the positions of the red sub-pixel area 101 and the green sub-pixel area 102 of the cover plate 100 can be adjusted.
  • Perform surface treatment specifically, for example, perform corresponding treatment according to the characteristics of the red quantum dot layer solution and the green quantum dot layer solution, and then spray the corresponding red quantum dots on the positions of the corresponding red sub-pixel regions 101 and green sub-pixel regions 102 layer solution and the green quantum dot layer solution, for example, an encapsulation protection layer can also be made on the red quantum dot layer 401 and the green quantum dot layer 402.
  • this is only an example, and this embodiment is not limited thereto.
  • Step S60 bonding the first display panel 11 and the second display panel 12 so that the first blue light-emitting element 501 is located in the red sub-pixel area 101, the second blue light-emitting element 502 is located in the green sub-pixel area 102, and the third The blue sub-pixel area 503 is located in the blue sub-pixel area 103, and the red quantum dot layer 401 and the green quantum dot layer 402 are respectively located on the side of the first blue light-emitting element 501 and the second blue light-emitting element 502 close to the cover plate 100 .
  • step S50 of this embodiment provides a second display substrate, which may also include:
  • FIG. 15 is a second display substrate 12.
  • a cover plate 100 is provided.
  • the cover plate 100 can be, for example, a PI (Polyimide, polyimide) substrate, and of course it can also be other substrates, which is not the case in this embodiment. limit.
  • a wall structure 200 is formed on the cover plate 100 to form a plurality of interval regions 110 on the cover plate 100.
  • the plurality of interval regions 110 include a red sub-pixel area 101, a green sub-pixel area 102 and a blue sub-pixel area 103, and the retaining wall
  • the structure 200 can be, for example, a black light-shielding barrier (or black matrix), and the interval area 110 formed by the barrier structure 200 can be, for example, a trapezoidal structure with a narrow top and a wide bottom.
  • the barrier can also be a light-shielding barrier of other materials.
  • the present embodiment is not limited thereto, and then the barrier wall reflective layer 310 is formed on the barrier wall structure 200 and the light reflection layer 320 is formed on the side of the spacer region 110 close to the cover plate 100.
  • the barrier wall structure 200 may, for example, include The first surface 210 of the cover plate 100 and the second surface 220 close to the driving substrate 600, the barrier wall reflective layer 310 can be covered on the second surface 220 of the barrier wall structure 200, for example, the second surface 220 can include, for example, a surface close to the driving substrate 600
  • the three sub-surfaces 203 are all covered with a wall reflective layer 310, and the wall reflective layer 310 can be, for example, a metal layer, or a composite layer of a metal layer and a transparent medium layer, specifically, it can be, for example, a metal layer/transparent medium layer/metal layer, or It may be, for example, a transparent medium layer/metal layer, and the transparent medium
  • a barrier wall reflective layer can be formed on the surface of the barrier wall structure first, and then a light reflective layer can be formed on the side of the spacer area close to the cover plate;
  • a light reflection layer is formed on the side of the area close to the cover plate, and then a wall reflection layer is formed on the surface of the wall structure, or a wall reflection layer is formed on the surface of the wall structure and a wall reflection layer is formed on the spaced area near the cover.
  • a light reflective layer is formed on one side of the board, that is, the barrier wall reflective layer and the light reflective layer are formed through the same manufacturing process. Taking FIG. The process forms a barrier reflective layer 310 on the surface of the barrier structure 200 and a light reflective layer 320 on the side of the spacer region 110 close to the cover plate 100 , and the barrier reflective layer 310 and the light reflective layer 320 are formed simultaneously.
  • a red quantum dot layer 401 is formed in the red sub-pixel region 101, wherein the red quantum dot layer 401 is located on the side of the light reflection layer 320 away from the cover plate 100, and a green quantum dot layer 402 is formed in the green sub-pixel region 102, wherein the green quantum dot layer 402
  • the dot layer 402 is located on a side of the light reflection layer 320 away from the cover plate 100 .
  • red quantum dots and green quantum dots can be prepared in advance, for example, a red quantum dot layer solution and a green quantum dot layer solution are prepared respectively by a solution method, and then the positions of the red sub-pixel area 101 and the green sub-pixel area 102 of the cover plate 100 can be adjusted.
  • Perform surface treatment specifically, for example, perform corresponding treatment according to the characteristics of the red quantum dot layer solution and the green quantum dot layer solution, and then spray the corresponding red quantum dots on the positions of the corresponding red sub-pixel regions 101 and green sub-pixel regions 102 layer solution and the green quantum dot layer solution, for example, an encapsulation protection layer can also be made on the red quantum dot layer 401 and the green quantum dot layer 402.
  • this is only an example, and this embodiment is not limited thereto.
  • Step S60 bonding the first display panel 11 and the second display panel 12 so that the first blue light-emitting element 501 is located in the red sub-pixel area 101, the second blue light-emitting element 502 is located in the green sub-pixel area 102, and the third The blue sub-pixel area 503 is located in the blue sub-pixel area 103, and the red quantum dot layer 401 and the green quantum dot layer 402 are respectively located on the side of the first blue light-emitting element 501 and the second blue light-emitting element 502 close to the cover plate 100 .
  • the embodiment of the present invention provides a barrier wall reflection layer on the barrier wall structure of the display panel, which narrows the channel for water vapor to enter the quantum dot layer, solves the problem of failure of the quantum dot layer of edge pixels, and improves the quantum dot layer.
  • the reliability of the dot layer through the setting of the light reflection layer, the unused blue light can be fully utilized, which improves the utilization rate of blue light, improves light efficiency and reduces power consumption.
  • the unutilized blue light can be further fully utilized, the utilization rate of the blue light is improved, and the light efficiency is further improved.
  • blue light can pass through and a small amount of yellow light can be reflected, which can prevent the side of the light-emitting surface from reflecting blue light due to the blue light reflection layer in the red sub-pixel area and the green sub-pixel area in the dark state. Appears to be bluish.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Des modes de réalisation de l'invention concernent un écran d'affichage et un procédé de fabrication d'un écran d'affichage. L'écran d'affichage comprend : un substrat d'excitation ; une plaque de recouvrement disposée à l'opposé du substrat d'excitation ; une structure de paroi barrière qui est disposée sur un côté de la plaque de recouvrement à proximité du substrat d'excitation et s'étend vers le substrat d'excitation pour former une pluralité de régions séparées, la pluralité de régions séparées comprenant une région de sous-pixels rouges, une région de sous-pixels verts et une région de sous-pixels bleus ; une pluralité d'éléments électroluminescents bleus qui sont disposés sur un côté du substrat d'excitation à proximité de la plaque de recouvrement et comprennent un premier élément électroluminescent bleu, un deuxième élément électroluminescent bleu et un troisième élément électroluminescent bleu ; une couche de réflexion de paroi barrière recouvrant la surface de la structure de paroi barrière ; une couche de réflexion de lumière qui est disposée sur le côté de la plaque de recouvrement à proximité du substrat d'excitation ou disposée sur le côté du substrat d'excitation à proximité de la plaque de recouvrement ; une couche de points quantiques rouges qui est disposée dans la région de sous-pixels rouges et située sur un côté du premier élément électroluminescent bleu à proximité de la plaque de recouvrement ; et une couche de points quantiques verts qui est disposée dans la région de sous-pixels verts et située sur un côté du deuxième élément électroluminescent bleu à proximité de la plaque de recouvrement.
PCT/CN2021/139265 2021-12-17 2021-12-17 Écran d'affichage et procédé de fabrication d'écran d'affichage WO2023108633A1 (fr)

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PCT/CN2021/139265 WO2023108633A1 (fr) 2021-12-17 2021-12-17 Écran d'affichage et procédé de fabrication d'écran d'affichage

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109671735A (zh) * 2019-01-02 2019-04-23 京东方科技集团股份有限公司 量子点显示基板及其制作方法、显示装置
US20200035770A1 (en) * 2018-07-26 2020-01-30 Boe Technology Group Co., Ltd. Display substrate and manufacturing method thereof, and display device
CN111736388A (zh) * 2020-07-14 2020-10-02 上海天马微电子有限公司 量子点彩膜基板及其制备方法、显示面板及显示装置
CN112233567A (zh) * 2019-06-27 2021-01-15 成都辰显光电有限公司 色彩转化组件及其制作方法、显示面板
CN112631020A (zh) * 2020-12-25 2021-04-09 舟山扑浪实业有限公司 一种量子点显示面板、制备方法及显示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200035770A1 (en) * 2018-07-26 2020-01-30 Boe Technology Group Co., Ltd. Display substrate and manufacturing method thereof, and display device
CN109671735A (zh) * 2019-01-02 2019-04-23 京东方科技集团股份有限公司 量子点显示基板及其制作方法、显示装置
CN112233567A (zh) * 2019-06-27 2021-01-15 成都辰显光电有限公司 色彩转化组件及其制作方法、显示面板
CN111736388A (zh) * 2020-07-14 2020-10-02 上海天马微电子有限公司 量子点彩膜基板及其制备方法、显示面板及显示装置
CN112631020A (zh) * 2020-12-25 2021-04-09 舟山扑浪实业有限公司 一种量子点显示面板、制备方法及显示装置

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