WO2023123283A1 - Écran d'affichage et son procédé de fabrication - Google Patents

Écran d'affichage et son procédé de fabrication Download PDF

Info

Publication number
WO2023123283A1
WO2023123283A1 PCT/CN2021/143368 CN2021143368W WO2023123283A1 WO 2023123283 A1 WO2023123283 A1 WO 2023123283A1 CN 2021143368 W CN2021143368 W CN 2021143368W WO 2023123283 A1 WO2023123283 A1 WO 2023123283A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
substrate
display panel
color
metal foil
Prior art date
Application number
PCT/CN2021/143368
Other languages
English (en)
Chinese (zh)
Inventor
徐宸科
樊勇
Original Assignee
厦门市芯颖显示科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 厦门市芯颖显示科技有限公司 filed Critical 厦门市芯颖显示科技有限公司
Priority to PCT/CN2021/143368 priority Critical patent/WO2023123283A1/fr
Publication of WO2023123283A1 publication Critical patent/WO2023123283A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements

Definitions

  • the present application relates to the field of display technology, in particular to a display panel and a manufacturing method thereof.
  • Micro-Light Emitting Diode (Micro-LED) display technology refers to the technology of realizing light-emitting display with high-density integrated micro-light-emitting diode arrays as pixels on the backplane.
  • Micro-LED display technology has gradually become a research hotspot, and the industry expects high-quality Micro-LED display products to enter the market.
  • High-quality Micro-LED display products will have a strong impact on existing products such as liquid crystal displays (Liquid Crystal Display, LCD), organic light-emitting diodes (Organic Display products such as Light-Emitting Diode (OLED) displays have had a huge impact.
  • the present application provides a display panel, a manufacturing method thereof, and a display device, so as to improve the light extraction efficiency of the Micro-LED display, thereby reducing the power consumption of the Micro-LED display.
  • an embodiment of the present application provides a display panel, the display panel includes: a color filter substrate, the color filter substrate includes a first substrate and a plurality of color filter substrates arranged on one side of the first substrate sheet, black matrix, metal foil layer and multiple color conversion layers, multiple hollow areas are arranged on the black matrix, multiple color filters are respectively located in multiple hollow areas, and the metal foil layer is arranged on the black matrix away from the first lining On one side of the bottom, the metal foil layer is provided with a plurality of through holes, and the plurality of through holes are respectively arranged corresponding to the plurality of color filters, and the plurality of color conversion layers are respectively located in the plurality of through holes; the display substrate, and the color The filter substrates are oppositely arranged, and the display substrate includes a driving substrate and a plurality of light-emitting devices arranged on one side of the driving substrate; wherein, the side on which the plurality of light-emitting devices are arranged on the display substrate faces to the side on which the metal
  • the material of the metal foil layer includes silver or aluminum.
  • the thickness range of the metal foil layer is 20-200 ⁇ m.
  • the material of the color conversion layer includes quantum dot material, phosphor material, phosphorescence photoluminescence material or organic photoluminescence material.
  • the cross-sectional area of the through hole is not larger than the cross-sectional area of the color filter.
  • the driving substrate includes a plurality of pixel regions arranged in rows and columns, and each row of pixel regions includes red pixel regions, green pixel regions, blue pixel regions and compensation color pixel regions periodically arranged in the row direction, and each column of pixel regions It includes red pixel areas, green pixel areas, blue pixel areas and compensation color pixel areas arranged periodically in the column direction.
  • the side on which multiple light-emitting devices are arranged on the display substrate and the side on which the metal foil layer is arranged on the color filter substrate are connected together through an adhesive glue layer.
  • the embodiment of the present application also provides a method for manufacturing a display panel, the method for manufacturing a display panel includes: providing a first substrate, and forming a plurality of color filters and black color filters on the first substrate Matrix, the black matrix is provided with multiple hollow areas, and multiple color filters are respectively located in multiple hollow areas; a metal foil layer is formed on the multiple color filters and the black matrix; multiple color filters are formed on the metal foil layer Through holes, a plurality of through holes are respectively arranged corresponding to a plurality of color filters; a plurality of color conversion layers are respectively formed in the plurality of through holes; a driving substrate is provided, and a plurality of light-emitting devices are formed on the driving substrate; the driving substrate It is fixed on the side of the metal foil layer away from the first substrate, and the plurality of light emitting devices are respectively located in the plurality of through holes, so that the plurality of color conversion layers respectively cover the surface of the side of the plurality of light emitting devices away from the driving substrate.
  • forming a plurality of color conversion layers in the plurality of through holes respectively includes: forming a plurality of color conversion layers in the plurality of through holes through a doctor blade coating process.
  • the step of forming the metal foil layer on the plurality of color filters and the black matrix specifically includes: providing the metal foil layer, and fixing the metal foil layer on the plurality of color filters and the black matrix through an adhesive layer away from the first on one side of a substrate.
  • the material of the metal foil layer includes silver or aluminum.
  • the thickness range of the metal foil layer is 20-200 ⁇ m.
  • the material of the color conversion layer includes quantum dot material, phosphor material, phosphorescence photoluminescence material or organic photoluminescence material.
  • the cross-sectional area of the through hole is not larger than the cross-sectional area of the color filter.
  • the driving substrate includes a plurality of pixel regions arranged in rows and columns, and each row of pixel regions includes red pixel regions, green pixel regions, blue pixel regions and compensation color pixel regions periodically arranged in the row direction, and each column of pixel regions It includes red pixel areas, green pixel areas, blue pixel areas and compensation color pixel areas arranged periodically in the column direction.
  • the beneficial effects of the present application are: different from the prior art, the display panel and the manufacturing method provided by the present application are provided by stacking multiple light-emitting devices and multiple color conversion layers in multiple through holes of the metal foil layer respectively, It can avoid the light crosstalk between the light emitting devices and the light crosstalk between the color conversion layers, and the inner wall reflectivity of the through hole on the metal foil layer is high, and the light absorption is low, which is beneficial to increase the emission of the light emitting device and the color conversion layer.
  • the reflection of light from the angle of view thereby increasing the light emitted from the light-emitting surface of the display panel, so as to improve the light-emitting efficiency, thereby reducing power consumption, and making it necessary to use only one light-emitting color light-emitting diode (for example, blue light Micro-LED with high luminous efficiency ) can realize full-color display, which can avoid the use of red light emitting diodes and green light emitting diodes with low luminous efficiency in the display panel, and thus can improve the light extraction efficiency of the micro light emitting diodes in the Micro-LED display panel to reduce Micro - Power consumption of the LED display panel.
  • one light-emitting color light-emitting diode for example, blue light Micro-LED with high luminous efficiency
  • FIG. 1 is a schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present application.
  • FIG. 2 is a schematic top view of a driving substrate provided by an embodiment of the present application.
  • FIG. 3 is another schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present application.
  • FIG. 4 is another schematic structural view of the top view of the driving substrate provided by the embodiment of the present application.
  • FIG. 5 is another schematic top view of the structure of the drive substrate provided by the embodiment of the present application.
  • FIG. 6 is another schematic top view of the driving substrate provided by the embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a method for manufacturing a display panel provided by an embodiment of the present application.
  • FIG. 8 is a schematic cross-sectional structure diagram after step S11 provided by the embodiment of the present application is completed.
  • FIG. 9 is a schematic cross-sectional structure diagram after step S12 provided by the embodiment of the present application is completed.
  • FIG. 10 is a schematic cross-sectional structure diagram after step S13 provided by the embodiment of the present application is completed.
  • FIG. 11 is a schematic cross-sectional structure diagram after step S14 provided by the embodiment of the present application is completed.
  • FIG. 12 is a schematic cross-sectional structure diagram after step S15 provided by the embodiment of the present application is completed.
  • FIG. 1 is a schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present application.
  • the display panel includes a display substrate 10 and a color filter substrate 20 oppositely arranged.
  • the color filter substrate 20 includes a first substrate 23 and a plurality of color filters 21, a black matrix 22, a metal foil layer 11, and a plurality of color conversion layers 12 arranged on one side of the first substrate 23.
  • On the black matrix 22 There are a plurality of hollow areas, and a plurality of color filters 21 are respectively located in the plurality of hollow areas.
  • the metal foil layer 11 is arranged on the side of the black matrix 22 away from the first substrate 23.
  • On the metal foil layer 11, there are a plurality of The through holes 111 and the plurality of through holes 111 are respectively arranged corresponding to the plurality of color filters 21 , and the plurality of color conversion layers 12 are respectively located in the plurality of through holes 111 .
  • the cross-sectional area of the above-mentioned through hole 111 is not larger than the cross-sectional area of the color filter 21, and the orthographic projection of the above-mentioned through hole 111 on the first substrate 23 can be located at the corresponding color filter 21 on the second substrate. Orthographic projection on a substrate 23 .
  • the display substrate 10 includes a driving substrate 14 and a plurality of light emitting devices 13 disposed on one side of the driving substrate 14 .
  • the side of the display substrate 10 on which the plurality of light-emitting devices 13 are disposed faces the side of the color filter substrate 20 on which the metal foil layer 11 is disposed.
  • one side of the plurality of light emitting devices 13 on the display substrate 10 and the side of the color filter substrate 20 on which the metal foil layer 11 is disposed may be connected together through an adhesive layer.
  • the adhesive adhesive layer may specifically be a light-transmitting adhesive layer.
  • one light emitting device 13 in the vertical direction, one light emitting device 13 , one color conversion layer 12 and one color filter 21 correspondingly arranged constitute one pixel.
  • the light emitted by the light-emitting device 13 in the pixel will first be converted into white light through the color conversion layer 12 in the pixel, and then pass through the color filter in the pixel.
  • Sheet 21 converts light to realize full-color display.
  • the above-mentioned metal foil layer 11 can be fixed on the side of the black matrix 22 away from the first substrate 23 through the adhesive layer 30 .
  • the above-mentioned through hole 111 may vertically penetrate the metal foil layer 11 , and its longitudinal cross-sectional shape may be a geometric shape such as a rectangle or an inverted trapezoid.
  • the light emitted by the plurality of light emitting devices 13 may have the same color, and the plurality of color conversion layers 12 can respectively convert the light emitted by the plurality of light emitting devices 13 into white light.
  • the plurality of color conversion layers 12 and the plurality of light emitting devices 13 may correspond one to one, that is, the number of color conversion layers 12 and the number of light emitting devices 13 in the display panel may be equal.
  • each color conversion layer 12 can cover the light-emitting side of its corresponding light-emitting device 13, so that when the light-emitting device 13 emits light, the light emitted by the light-emitting device 13 can be converted into white light.
  • the plurality of light emitting devices 13 and the plurality of through holes 111 may also correspond one to one, that is, the number of light emitting devices 13 and the number of through holes 111 in the display panel may also be equal.
  • each through hole 111 can have a color conversion layer 12 and a light emitting device 13 correspondingly, and the color conversion layer 12 and light emitting device 13 in the through hole 111 can be in the depth direction of the through hole 111 (that is, , the above-mentioned metal foil layer 11 in the thickness direction) is stacked and arranged.
  • the above-mentioned metal foil layer 11 having through holes 111 can not only separate each light emitting device 13 from other light emitting devices 13 located around it, so as to effectively avoid optical crosstalk between adjacent light emitting devices 13 and adjacent color conversion
  • the optical crosstalk between the layers 12 improves the display effect of the display panel.
  • the above-mentioned color conversion layer 12 can cover its corresponding light-emitting device 13, so that the light emitted from the light-emitting device 13 can enter its corresponding color conversion layer 12 as much as possible, thereby improving the performance of the light-emitting device. 13 Utilization of the emitted light.
  • the plurality of light-emitting devices 13 may be arranged in an array to form a light-emitting device array, and the plurality of color conversion layers 12 may be arranged in the same manner as the plurality of light-emitting devices 13, that is, the plurality of The color conversion layers 12 can also be arranged in an array to form a color conversion layer array.
  • the inner wall of the through hole 111 may be in contact with the surrounding surfaces of the light emitting device 13 , that is, there may be no gap between the inner wall of the through hole 111 and the light emitting device 13 . In other embodiments, there may also be a gap between the inner wall of the through hole 111 and the light emitting device 13 , and the color conversion layer 12 may fill the gap, so as to improve the performance of the display panel.
  • the light emitted by the plurality of light emitting devices 13 may be of the same color, and the color conversion layer 12 can convert the light emitted by the light emitting devices 13 into white light.
  • the light emitted by the above-mentioned light emitting device 13 may be primary color light (for example, blue light), or light of other colors such as purple light, colorless ultraviolet light, or the like.
  • the above-mentioned light emitting device 13 may be a light emitting diode (Light Emitting Diode, LED), for example, a blue LED.
  • the above-mentioned light-emitting device 13 can be specifically a micro-light-emitting diode (Micro-Light Emitting Diode, Micro-LED), for example, blue Micro-LED.
  • Micro-LED has the advantages of low power consumption, high brightness, long life, fast response time, etc., which is conducive to improving the display performance of the above-mentioned display panel.
  • the above-mentioned metal foil layer 11 has a high reflectivity, that is, the inner wall of the through hole 111 on the above-mentioned metal foil layer 11 has a high reflectivity to light, which is beneficial to increase the light-emitting device 13 and color in the through hole 111.
  • the reflection of the side viewing angle light emitted by the conversion layer 12 further increases the light emitted from the light-emitting device 13 into the above-mentioned color conversion layer 12 and the white light emitted from the color conversion layer 13 to the outside of the above-mentioned color conversion layer 12, thereby improving the above-mentioned
  • the light output efficiency of the display panel is conducive to reducing power consumption.
  • the material of the metal foil layer 11 may include, but is not limited to, metals with high reflectivity such as silver or aluminum.
  • the aforementioned metal foil layer 11 may specifically be a silver foil layer or an aluminum foil layer.
  • the retaining wall in this embodiment is formed by punching holes with high-reflectivity metal foil, and the reflectivity of the hole wall is high.
  • the light absorption is low, which can improve the utilization rate of the light emitted by the light emitting device 13, thereby improving the luminous efficiency and reducing power consumption.
  • the surface of the above-mentioned light-emitting device 13 away from the color conversion layer 12 and the surface of the above-mentioned color conversion layer 12 away from the light-emitting device 13 can be respectively connected to the above-mentioned metal foil layer 11 in the depth direction of the through hole 111. Align the opposite surfaces on the top. That is, the total thickness of the light emitting device 13 and the color conversion layer 12 stacked in the through hole 111 in the depth direction of the through hole 111 may be equal to the thickness of the metal foil layer 11 in the depth direction of the through hole 111 .
  • the total thickness of the light emitting device 13 and the color conversion layer 12 stacked in the through hole 111 in the depth direction of the through hole 111 may be smaller than the thickness of the metal foil layer 11 above.
  • the surface of the above-mentioned light-emitting device 13 away from the color conversion layer 12 may be aligned with an end surface of the above-mentioned through hole 111 close to the light-emitting device 13, and the height of the surface of the above-mentioned color conversion layer 12 away from the light-emitting device 13 relative to the end surface may be less than The depth of the above-mentioned through hole 111. In this way, it is beneficial to reduce the emission angle of the white light emitted by the color conversion layer 12 and increase the brightness of the display panel in the depth direction (ie, the vertical direction) of the through hole 111 to further improve the light extraction efficiency.
  • the thickness of the metal foil layer 11 may range from 20 ⁇ m to 200 ⁇ m, such as 20 ⁇ m, 50 ⁇ m, 80 ⁇ m, 110 ⁇ m, 140 ⁇ m, 170 ⁇ m, 200 ⁇ m and so on.
  • the retaining wall of this embodiment is formed by perforating metal foil, and the thickness can be larger, which is beneficial to broaden the selection range of the color conversion material used to form the color conversion layer 12, The color conversion efficiency of the color conversion layer 12 is improved, and the concentration of the color conversion material in the color conversion layer 12 is reduced.
  • the light for example, blue light
  • part of the light will be absorbed by the color conversion layer 12, and the remaining light will be combined with the color conversion layer 12.
  • the light emitted by 12 is mixed to obtain white light, so as to ensure that the light emitted from the color conversion layer 12 is white light.
  • the wavelength range of the emitted light may be 500nm to 660nm.
  • the light emitted by the above-mentioned color conversion layer 12 may be monochromatic light or multiple color light.
  • the light emitted by the color conversion layer 12 may be yellow light (Y), two-color light including green light and red light (G+R), Two-color light (Y+R) including yellow light and red light or two-color light (G+O) including green light and orange light, etc.
  • the material of the color conversion layer 12 may include photoluminescent materials such as quantum dot materials, phosphor materials, phosphorescent photoluminescent materials, or organic photoluminescent materials.
  • the quantum dot material may include but not limited to CdS/CdSe, InP, perovskite quantum dots and the like.
  • Phosphor materials may include, but are not limited to, yttrium aluminum garnet (YAG), silicate phosphor, nitride phosphor, and the like.
  • Phosphorescent photoluminescent materials may include, but are not limited to, fluoride phosphor (KSF).
  • Organic photoluminescent materials may include, but are not limited to, fluorescent pigments or dies.
  • the above-mentioned color conversion layer 12 may be formed by mixing photoluminescent materials and binders.
  • the photoluminescent material contained in the above-mentioned color conversion layer 12 can absorb the light (such as blue light) emitted by the above-mentioned light-emitting device 13, that is, can be effectively excited by the light emitted by the above-mentioned light-emitting device 13, and then emit White light can be obtained by mixing with the light emitted by the above-mentioned light emitting device 13 .
  • any other material with the same effect can also be used as the photoluminescent material in the color conversion layer 12 .
  • the above-mentioned light-emitting device 13 can be specifically a blue light Micro-LED, the above-mentioned color conversion layer 12 can be excited by blue light, and the light emitted after the excitation can be mixed with the blue light to obtain white light, thereby ensuring self-color conversion.
  • the light emitted by layer 12 is white light.
  • the display panel in this embodiment only needs to transfer the blue light Micro-LED chip, the transfer efficiency can be increased by three times, and the transfer cost is reduced. At the same time, since the usage of blue-light Micro-LED chips has increased by 3 times, and blue-light Micro-LED chips are easier to achieve scale efficiency, it is beneficial to reduce chip costs.
  • the driving substrate 14 may include a second substrate 141 and a TFT device layer 142 that are stacked, and the plurality of light emitting devices 13 may be disposed on the side of the TFT device layer 142 away from the second substrate 141, and The above-mentioned multiple light emitting devices 13 may all be electrically connected to the TFT device layer 142 .
  • the TFT device layer 142 can control the above-mentioned plurality of light emitting devices 13 .
  • the above-mentioned TFT device layer 142 may include a plurality of gate lines, a plurality of data lines disposed on the second substrate 141, and A plurality of pixel regions, wherein the plurality of pixel regions may include a red pixel region 31, a green pixel region 32, a blue pixel region 33, and the like.
  • the above-mentioned light emitting devices 13 can be fixed on the corresponding pixel regions in the driving substrate 14 by welding, and the plurality of light-emitting devices 13 can correspond to the above-mentioned plurality of pixel regions one by one.
  • the converted white light can be filtered after passing through the above-mentioned multiple color filters 21 respectively.
  • a variety of primary color light for example, red, green and blue light).
  • the pixel structure of the above-mentioned display panel can be designed with pixel structures such as RGB, RGBW, RGBC, RGBY, RGBC, RGBYC, RGBYM, RGBCM, RGBYC, and WYCM.
  • R is red
  • G is green
  • B is blue
  • W is white
  • M is magenta (including B and R)
  • Y is magenta (including G and R)
  • C is cyan (including B and G two colors).
  • the pixel structure of the display panel is RGBW
  • the white pixels can increase the brightness of the display screen, the luminous intensity of the RGB pixels can be appropriately reduced, thereby reducing power consumption.
  • the brightness of the white light emitted by the white pixel is basically equal to the brightness of the white light formed by mixing the light emitted by the three RGB pixels, then when the display panel displays a full white picture, the pixel structure of the RGBW MicroLED display panel The brightness is about 1.5 times the brightness of the MicroLED display panel whose pixel structure is RGB.
  • the above-mentioned plurality of color filters 21 may include red filters R (for forming red pixels), green filters G (for forming green pixels) and blue Color filter B (for forming blue pixels), wherein, after the white light emitted from the above-mentioned color conversion layer 12 passes through its corresponding red filter R, green filter G or blue filter B, Red light, green light or blue light can be filtered out accordingly, thereby realizing the full-color display of the above-mentioned display panel.
  • the above-mentioned plurality of color filters 21 not only include a red filter R, a green filter G, and a blue filter B, but also include compensation color filters Light sheet X.
  • the pixel structure of the above-mentioned display panel is RGBX, and, as shown in FIG. Pixel area 34 .
  • the plurality of pixel regions in the driving substrate 14 may be arranged in rows and columns, and each row of pixel regions may include red pixel regions 31, green pixel regions 32, blue pixel regions 33 and Compensation color pixel area 34 , and each pixel area in the same row of pixel areas can be the same type of pixel area, for example, all are red pixel area 31 , green pixel area 32 , blue pixel area 33 or compensation color pixel area 34 .
  • each row of pixel regions may include red pixel regions 31, green pixel regions 32, The blue pixel area 33 and the compensation color pixel area 34 .
  • the compensation color filter X can be white filter W (for forming white pixels), yellow filter Y (for forming yellow pixels), cyan filter C (for forming cyan pixels), quality Red filter M (for forming magenta pixels), etc. Moreover, after the white light emitted from the color conversion layer 12 passes through the compensation color filter X, the display brightness of the display panel can be effectively improved.
  • the above-mentioned plurality of color filters 21 may include a red filter R, a green filter G, a blue filter B and a white filter W, corresponding to the pixel structure of the above-mentioned display panel RGBW, and, as shown in FIG. 5 , the plurality of pixel areas in the driving substrate 14 may include a red pixel area 31 , a green pixel area 32 , a blue pixel area 33 and a white pixel area 34 .
  • the plurality of pixel regions in the driving substrate 14 may be arranged in rows and columns, and each row of pixel regions may include red pixel regions 31, green pixel regions 32, blue pixel regions 33 and white pixel area 34, and each column of pixel area may include red pixel area 31, green pixel area 32, blue pixel area 33 and white pixel area 34 arranged periodically in the column direction.
  • the plurality of color filters 21 may include a red filter R, a green filter G, a blue filter B, and a yellow filter Y, corresponding to the pixels of the above-mentioned display panel
  • the structure is RGBY, and, as shown in FIG. 6 , the plurality of pixel areas in the driving substrate 14 may include a red pixel area 31 , a green pixel area 32 , a blue pixel area 33 and a yellow pixel area 35 .
  • the plurality of pixel regions in the driving substrate 14 may be arranged in rows and columns, and each row of pixel regions may include red pixel regions 31, green pixel regions 32, blue pixel regions 33 and A yellow pixel area 35 , and each column of pixel areas may include a red pixel area 31 , a green pixel area 32 , a blue pixel area 33 and a yellow pixel area 35 arranged periodically in the column direction.
  • the display panel in this embodiment not only includes red pixels, green pixels, and blue pixels, but also includes compensation color pixels, which can reduce the luminous intensity of the RGB pixels in the display panel, And improve display brightness and luminous efficiency.
  • the display panel of this embodiment by stacking multiple light-emitting devices and multiple color conversion layers in multiple through holes of the metal foil layer, it is possible to avoid light crosstalk between light-emitting devices and light interference between color conversion layers.
  • Crosstalk, and the inner wall reflectivity of the through hole on the metal foil layer is high, and the light absorption is low, which is conducive to increasing the reflection of the side view light emitted by the light-emitting device and the color conversion layer, thereby increasing the light emitted from the light-emitting surface of the display panel.
  • Figure 7 is a schematic flow chart of the method for manufacturing the display panel provided by the embodiment of the present application. Please refer to Figures 1 to 6 at the same time. Schematic diagram of the structure. The specific process of the manufacturing method of the display panel provided in this embodiment may be as follows:
  • Step S11 providing a first substrate 23, and forming a plurality of color filters 21 and a black matrix 22 on the first substrate 23, the black matrix 22 is provided with a plurality of hollow areas, and the plurality of color filters 21 are respectively Located within multiple cutout areas.
  • step S11 the schematic cross-sectional structure after step S11 is completed may be shown in FIG. 8 .
  • the specific structure and formation method of the color filter 21 and the black matrix 22 can refer to the specific implementation manners of the color filter and the black matrix in the prior art, so details are not repeated here.
  • Step S12 forming the metal foil layer 11 on the plurality of color filters 21 and the black matrix 22 .
  • the schematic cross-sectional structure after the step S12 is completed may be as shown in FIG. 9 .
  • the above step S12 may specifically include: providing the metal foil layer 11, and fixing the metal foil layer 11 on the side of the plurality of color filters 21 and the black matrix 22 away from the first substrate 23 through the adhesive layer 30 .
  • the adhesive layer 30 may specifically be a transparent adhesive layer.
  • Step S13 forming a plurality of through holes 111 on the metal foil layer 11 , and the plurality of through holes 111 are respectively arranged corresponding to the plurality of color filters 21 .
  • step S13 the schematic cross-sectional structure after step S13 is completed may be shown in FIG. 10 .
  • a plurality of through holes 111 may be formed on the metal foil layer 11 by a through hole etching process or a laser drilling process.
  • Step S14 Forming a plurality of color conversion layers 12 in the plurality of through holes 111 .
  • step S14 a schematic cross-sectional structure after step S14 is completed may be shown in FIG. 11 .
  • a plurality of color conversion layers 12 may be respectively formed in a plurality of through holes 111 through a doctor blade coating process.
  • the color conversion layer 12 may not fill the through hole 111, that is, after the color conversion layer 12 is formed in the through hole 111, there will be a remaining space 111A at the end of the through hole 111 away from the above-mentioned color filter substrate 20, the remaining space 111A can be used to accommodate the corresponding light emitting device 13 in subsequent processes.
  • the color conversion layer material remaining on the surface of the metal foil layer 11 can also be wiped off to avoid contamination.
  • the color conversion layer in this embodiment is formed by using a low-cost scrape coating process. Formation reduces the production cost, and the glue used to form the color conversion layer has the advantages of a large selection range and low material cost.
  • the metal foil layer material and the color conversion layer material used in this embodiment have been produced in batches, so there is no need to develop new materials, and the material cost is low, which can further reduce the production cost.
  • Step S15 providing a driving substrate 14 , and forming a plurality of light emitting devices on the driving substrate 14 .
  • step S15 the schematic cross-sectional structure after step S15 can be shown in FIG. 12 .
  • mass transfer of a plurality of light emitting devices 13 onto the driving substrate 14 may be performed to form a plurality of light emitting devices 13 on the driving substrate 14 .
  • the above-mentioned light emitting device 13 may specifically be a Micro-LED (for example, a blue-light Micro-LED).
  • a Micro-LED for example, a blue-light Micro-LED
  • multiple Micro-LEDs can be formed on a single crystal silicon substrate, and then the multiple Micro-LEDs on the single crystal silicon substrate can be cut to obtain multiple independent Micro-LEDs, which can then be soldered Each Micro-LED is transferred to a corresponding area on the driving substrate 14 (that is, a corresponding pixel area) in a manner.
  • the structure obtained after performing the above step S11, step S12, step S13 and step S14 in sequence is the above-mentioned color filter substrate 20, and the structure obtained after performing the above step S15 in this embodiment is the above-mentioned structure.
  • a substrate 10 is shown.
  • steps S11 to S14 for preparing the color filter substrate 20 may be performed in parallel with step S15 for preparing the display substrate 10 , or may be performed before step S15 , or may be performed after step S15 .
  • Step S16 Fix the driving substrate 14 on the side of the metal foil layer 11 facing away from the first substrate 23, and make the plurality of light emitting devices 13 respectively located in the plurality of through holes 111, so that the plurality of color conversion layers 12 respectively cover the A plurality of light emitting devices 13 is away from one side surface of the driving substrate 14 .
  • FIG. 1 a schematic cross-sectional structure diagram after step S16 is completed may be shown in FIG. 1 .
  • the driving substrate 14 formed with a plurality of light emitting devices 13 can be fixed on a side of the metal foil layer 11 away from the color filter substrate 20 in the direction that the plurality of light emitting devices 13 are opposite to the plurality of through holes 111 one by one. side, and make the plurality of light emitting devices 13 respectively located in the plurality of through holes 111 .
  • the light-emitting side of each light-emitting device 13 faces its corresponding color conversion layer 12, so that the color conversion layer 12 can convert the light emitted by its corresponding light-emitting device 13 into white light.
  • the plurality of color filters 21 of the color filter substrate 20 can respectively convert the white light emitted by the plurality of color conversion layers 12 into a plurality of primary color lights, thereby realizing the full-color display of the display panel.
  • the manufacturing method of the display panel of this embodiment by providing a first substrate, and forming a plurality of color filters and a black matrix on the first substrate, the black matrix is provided with a plurality of hollow areas, a plurality of color filters The chips are respectively located in a plurality of hollow areas, and then a metal foil layer is formed on a plurality of color filters and a black matrix, and a plurality of through holes are formed on the metal foil layer, and a plurality of through holes are respectively connected with a plurality of color filters
  • a plurality of color conversion layers are respectively formed in a plurality of through holes, and then a driving substrate is provided, and a plurality of light-emitting devices are formed on the driving substrate, and then the driving substrate is fixed on a side of the metal foil layer away from the first substrate.
  • the light crosstalk between the conversion layers, and the inner wall reflectivity of the through hole on the metal foil layer is high, and the light absorption is low, which is conducive to increasing the reflection of the side view light emitted by the light-emitting device and the color conversion layer, thereby increasing the self-display panel.
  • the light emitted from the light-emitting surface improves the light-emitting efficiency, thereby reducing power consumption, and enables full-color display to be achieved only by using a light-emitting diode of one color (for example, a high-efficiency blue Micro-LED).
  • a light-emitting diode of one color for example, a high-efficiency blue Micro-LED.
  • Red light emitting diodes and green light emitting diodes with low luminous efficiency are used in the display panel, so the luminous efficiency of the micro light emitting diodes in the Micro-LED display panel can be improved to reduce the power consumption of the Micro-LED display panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Sont divulgués un écran d'affichage et son procédé de fabrication. Selon les modes de réalisation de l'écran d'affichage de la présente demande, une pluralité de dispositifs émetteurs de lumière et une pluralité de couches de conversion de couleur sont respectivement empilés dans une pluralité de trous traversants d'une couche de feuille métallique, de telle sorte que la diaphonie optique entre les dispositifs émetteurs de lumière et la diaphonie optique entre les couches de conversion de couleur peut être évitée, et les parois internes des trous traversants dans la couche de feuille métallique ont une réflectivité élevée et une faible absorption de la lumière, ce qui facilite l'augmentation de la réflexion de la lumière émise par les dispositifs émetteurs de lumière et les couches de conversion de couleur à un angle de visualisation latéral.
PCT/CN2021/143368 2021-12-30 2021-12-30 Écran d'affichage et son procédé de fabrication WO2023123283A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/143368 WO2023123283A1 (fr) 2021-12-30 2021-12-30 Écran d'affichage et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/143368 WO2023123283A1 (fr) 2021-12-30 2021-12-30 Écran d'affichage et son procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2023123283A1 true WO2023123283A1 (fr) 2023-07-06

Family

ID=86997082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/143368 WO2023123283A1 (fr) 2021-12-30 2021-12-30 Écran d'affichage et son procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2023123283A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN112820724A (zh) * 2019-11-18 2021-05-18 夏普福山半导体株式会社 图像显示元件及图像显示元件的制造方法
CN113380842A (zh) * 2020-03-10 2021-09-10 夏普福山半导体株式会社 图像显示元件
CN113488501A (zh) * 2021-06-30 2021-10-08 上海天马微电子有限公司 显示面板及显示装置
CN113725249A (zh) * 2021-08-30 2021-11-30 京东方科技集团股份有限公司 一种芯片结构、制作方法和显示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112820724A (zh) * 2019-11-18 2021-05-18 夏普福山半导体株式会社 图像显示元件及图像显示元件的制造方法
CN113380842A (zh) * 2020-03-10 2021-09-10 夏普福山半导体株式会社 图像显示元件
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
CN113488501A (zh) * 2021-06-30 2021-10-08 上海天马微电子有限公司 显示面板及显示装置
CN113725249A (zh) * 2021-08-30 2021-11-30 京东方科技集团股份有限公司 一种芯片结构、制作方法和显示装置

Similar Documents

Publication Publication Date Title
WO2020215620A1 (fr) Panneau d'affichage à microdel
TWI626479B (zh) 彩色濾光片及使用該彩色濾光片之顯示面板
KR20210153135A (ko) 표시 패널, 표시 장치 및 표시 패널의 제조 방법
WO2017092131A1 (fr) Procédé de fabrication pour substrat de film coloré, et dispositif d'affichage à cristaux liquides
US20210336100A1 (en) Display device and manufacturing method of display device
US20210359157A1 (en) Display device and method for fabricating same
CN112582441B (zh) 一种显示面板、显示装置及显示面板的制备方法
US20170139276A1 (en) Emissive Display with Printed Light Modification Structures
WO2021073282A1 (fr) DISPOSITIF DE MICRO-AFFICHAGE À μLED EN COULEUR SANS CONTACT ÉLECTRIQUE, ET SON PROCÉDÉ DE FABRICATION
WO2021243786A1 (fr) Écran d'affichage et son procédé de fabrication
CN112310143A (zh) 量子点微led显示器件及其制备方法
WO2021042502A1 (fr) Procédé de formation de motif de dispositif électroluminescent à points quantiques et dispositif électroluminescent à points quantiques
CN113013310A (zh) 显示面板和显示装置
CN114566581A (zh) 显示面板及显示面板制造方法
WO2022095129A1 (fr) Micro-diode électroluminescente et écran d'affichage
WO2023123283A1 (fr) Écran d'affichage et son procédé de fabrication
US11107949B2 (en) LED display device, method for manufacturing the same, and LED display panel
CN114914267B (zh) 可修复的全尺寸全彩led芯片及其制备方法
KR102378641B1 (ko) Led 발광 유닛 및 led 디스플레이 장치
CN116417552A (zh) 显示面板及其制作方法
WO2023123263A1 (fr) Panneau d'affichage et son procédé de fabrication
CN110176530B (zh) 一种图案化色彩变换阵列Micro LED及其制备方法和用途
US11251345B2 (en) Light conversion substrate and manufacturing method thereof, and display panel
CN116417551A (zh) 显示面板及其制作方法
WO2022047929A1 (fr) Substrat de film coloré et son procédé de fabrication, et panneau d'affichage