WO2021258849A1 - 显示面板及显示装置 - Google Patents
显示面板及显示装置 Download PDFInfo
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- WO2021258849A1 WO2021258849A1 PCT/CN2021/090596 CN2021090596W WO2021258849A1 WO 2021258849 A1 WO2021258849 A1 WO 2021258849A1 CN 2021090596 W CN2021090596 W CN 2021090596W WO 2021258849 A1 WO2021258849 A1 WO 2021258849A1
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- film layer
- inorganic film
- display panel
- refractive index
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- 230000008033 biological extinction Effects 0.000 claims abstract description 35
- 238000005538 encapsulation Methods 0.000 claims abstract description 34
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000007641 inkjet printing Methods 0.000 description 3
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
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Images
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
- H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/877—Arrangements for extracting light from the devices comprising scattering means
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
Definitions
- This application relates to the display field, and in particular to a display panel and a display device.
- OLED display panel display has the advantages of high color gamut, flexibility, and fast response speed, and its market share is increasing year by year. Users have higher and higher requirements for the display effect of OLED display panels.
- OLED display panel since the thickness of each film layer of the device and package fluctuates with the evaporation cycle, the uniformity of the film thickness will aggravate the dispersion degree of the OLED viewing angle characteristics, causing problems such as cyan and powdery viewing angle.
- the embodiments of the present application provide a display panel and a display device, aiming to improve the display effect of the display panel.
- An embodiment of the first aspect of the present application provides a display panel.
- the display panel includes: a substrate; a light-emitting unit located on the substrate; an encapsulation layer located on a side of the light-emitting unit away from the substrate;
- the absolute value of the difference between the first inorganic film layer, the first auxiliary film layer and the organic film layer on the unit, the refractive index of the first inorganic film layer and the refractive index of the first auxiliary film layer is less than or equal to 0.05, and the first auxiliary film layer
- the extinction coefficient of the film layer for visible light is smaller than the extinction coefficient of the first inorganic film layer for visible light.
- An embodiment of the second aspect of the present application provides a display device, which includes the display panel of any one of the foregoing embodiments.
- the display panel includes a substrate, a light-emitting unit on the substrate, and an encapsulation layer for encapsulating the light-emitting unit.
- the encapsulation layer can prevent the intrusion of water and oxygen and increase the service life of the light-emitting unit.
- the encapsulation layer includes a first inorganic film layer, a first auxiliary film layer, and an organic film layer.
- the absolute value of the difference between the refractive index of the first inorganic film layer and the first auxiliary film layer is less than or equal to 0.05, that is, the refractive index of the first inorganic film layer and the first auxiliary film layer are close, which can reduce the first inorganic film layer.
- the thickness of the first inorganic film layer no longer has a major influence on the viewing angle characteristics, and the visual role deviation or uneven color rendering caused by the uneven thickness of the first inorganic film layer is improved, and the display effect of the display panel is improved.
- the extinction coefficient of the first auxiliary film layer to visible light is smaller than the extinction coefficient of the first inorganic film layer to visible light, which can reduce the influence of increasing the first auxiliary film layer on the amount of light emitted by the display panel. Therefore, the embodiments of the present application can improve the display effect of the display panel under the premise of ensuring the amount of light emitted by the display panel.
- Fig. 1 shows a partial cross-sectional view of a display panel.
- FIG. 2 shows a schematic top view of an embodiment of a display panel according to the present application
- FIG. 3 shows a partial enlarged view of an example of the Q area in FIG. 2.
- Fig. 4 shows a cross-sectional view at A-A in Fig. 3 in an embodiment.
- FIG. 5 shows a schematic diagram of a structure of an encapsulation layer of a display panel in an embodiment.
- FIG. 6 shows a schematic diagram of the structure of the encapsulation layer of the display panel in another embodiment.
- FIG. 7 shows a schematic diagram of a structure of an encapsulation layer of a display panel in another embodiment.
- Fig. 8 shows a partial cross-sectional view at A-A in 3 in another embodiment.
- the Organic Light Emitting Diode (OLED) display panel 100 has the advantages of high color gamut, flexibility, and fast response speed, and its market share is increasing year by year. Users have higher and higher requirements for the display effect of OLED panels.
- an OLED display panel 100' includes a light-emitting unit 20' and an encapsulation layer 30' on the light-emitting unit 20'.
- the encapsulation layer 30' includes a first inorganic film layer 31' and an organic film layer 33 stacked in sequence. 'And the second inorganic film layer 35'.
- the contact interface between the first inorganic film layer 31' and the organic film layer 33' reflects the light emitted by the light emitting unit 20'.
- the thickness of the first inorganic film layer 31' is not uniform, the reflected light at the contact interface between the first inorganic film layer 31' and the organic film layer 33' is not uniform.
- the fluctuation of the thickness of the first inorganic layer in the encapsulation layer 30' located on the light emitting device 22' in the display panel 100' has a significant influence on the white light trajectory and the apparent role deviation. This leads to an increase in the probability of occurrence of small viewing angles and blue viewing angles, resulting in a loss of yield. Therefore, it is necessary to improve the display panel 100' to reduce the sensitivity of the film thickness to the viewing angle characteristics.
- An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.
- a display panel which may be an organic light emitting diode (OLED) display panel.
- the display panel 100 of the embodiment of the present application includes a display area AA and a non-display area NA.
- the display panel 100 may be a full-screen display display panel 100, and the display panel 100 includes a display area AA.
- the display panel 100 includes a plurality of sub-pixels 110, and the plurality of sub-pixels 110 are, for example, a red sub-pixel 111, a blue sub-pixel 113, and a green sub-pixel 112. In other embodiments, the plurality of sub-pixels 110 may also be yellow sub-pixels, for example.
- the display panel 100 includes a substrate 10, a light-emitting unit 20 located on the substrate 10, and an encapsulation layer 30 located on a side of the light-emitting unit 20 away from the substrate 10.
- the encapsulation layer 30 includes a first inorganic film layer 31, a first auxiliary film layer 32, and an organic film layer 33 that are sequentially stacked on the light-emitting unit 20.
- the refractive index of the first inorganic film layer 31 and the refractive index of the first auxiliary film layer 32 are The absolute value of the difference in rate is less than or equal to 0.05, and the extinction coefficient of the first auxiliary film layer 32 for visible light is smaller than the extinction coefficient of the first inorganic film layer 31 for visible light.
- the encapsulation layer 30 is used to encapsulate the light-emitting unit 20, which can prevent water and oxygen from intruding and improve the service life of the light-emitting unit 20.
- the absolute value of the difference between the refractive index of the first inorganic film layer 31 and the first auxiliary film layer 32 is less than or equal to 0.05, that is, the refractive index of the first inorganic film layer 31 and the first auxiliary film layer 32 are close, which can reduce the first inorganic film layer 31 and the first auxiliary film layer 32. The light reflected from the contact interface between the film layer 31 and the first auxiliary film layer 32.
- the thickness of the first inorganic film layer 31 no longer has a major influence on the viewing angle characteristics, and the visual role deviation or uneven color rendering caused by the uneven thickness of the first inorganic film layer 31 is improved, and the display effect of the display panel 100 is improved.
- the extinction coefficient of the first auxiliary film layer 32 for visible light is smaller than the extinction coefficient of the first inorganic film layer 31 for visible light, which can reduce the influence of increasing the first auxiliary film layer 32 on the amount of light emitted by the display panel 100. Therefore, the embodiment of the present application can improve the display effect of the display panel 100 under the premise of ensuring the amount of light emitted by the display panel 100.
- the extinction coefficient (English name: extinction coefficient) is the value of light absorption of the measured object (for example, the first inorganic film layer 31).
- the extinction coefficient characterizes the light absorption capacity of the object under test. The greater the extinction coefficient, the stronger the light absorption capacity of the object under test, and the less the amount of light emitted after passing through the object under test. On the contrary, the smaller the extinction coefficient, the weaker the light absorption ability of the measured object, and the greater the amount of light that passes through the measured object.
- a light extraction layer and a light modulation layer are further provided between the light emitting unit 20 and the encapsulation layer 30, and the light modulation layer is, for example, a lithium fluoride layer to improve the light extraction efficiency of the display panel 100 .
- the substrate 10 may be made of light-transmitting materials such as glass and polyimide (PI).
- the light emitting unit 20 includes, for example, a driving device and a light emitting device, and the driving device includes, for example, a pixel driving circuit and the like.
- the light emitting device includes, for example, a first electrode layer, a light emitting structure layer, and a second electrode layer.
- the light-emitting structure layer may further include at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer.
- the first electrode layer may be a light-transmitting electrode, and the first electrode layer may include an indium tin oxide (Indium Tin Oxide, ITO) layer or an indium zinc oxide layer.
- the first electrode layer may also be a reflective electrode layer, including a first light-transmitting conductive layer, a reflective layer on the first light-transmitting conductive layer, and a second light-transmitting conductive layer on the reflective layer.
- the first light-transmitting conductive layer and the second light-transmitting conductive layer may be ITO, indium zinc oxide, etc.
- the reflective layer may be a metal layer, for example, made of silver.
- the second electrode layer may include a magnesium-silver alloy layer.
- the display panel 100 may further include a polarizer and a cover plate located above the encapsulation layer 30, or a cover plate may be directly disposed on the encapsulation layer 30, without the need for a polarizer.
- touch electrodes may also be provided on the encapsulation layer 30.
- the refractive index of the first auxiliary film layer 32 is less than or equal to the refractive index of the first inorganic film layer 31.
- the refractive index of the first auxiliary film layer 32 is 1.7 to 1.8.
- the refractive index of the first auxiliary film layer 32 and the refractive index of the first inorganic film layer 31 are equal.
- the refractive index of the first auxiliary film layer 32 is equal to the refractive index of the first inorganic film layer 31, which can reduce the light from the light emitting unit 20 passing through the first auxiliary film layer 32 and the first inorganic film layer.
- the reflected light generated at the contact interface between the layers 31 improves the visual role deviation or uneven color rendering of the display panel 100 caused by the uneven thickness of the first inorganic film layer 31, and further improves the display effect of the display panel 100.
- the refractive indexes of the first auxiliary film layer 32 and the first inorganic film layer 31 are both 1.75. According to experimental measurements, when the refractive indices of the first auxiliary film layer 32 and the first inorganic film layer 31 are both 1.75, it can not only ensure that the first inorganic film layer 31 has a good protective effect, avoid water and oxygen intrusion, but also can ensure the first An inorganic film layer 31 has good bending performance and improves the bending resistance of the display panel 100.
- the refractive index of the first auxiliary film layer 32 and the first inorganic film layer 31 are both 1.75, which can improve the visual role deviation or uneven color rendering of the display panel 100 caused by the uneven thickness of the first inorganic film layer 31, and further improve the display panel. 100 display effect.
- the extinction coefficient of the first inorganic film layer 31 for visible light is 0.0006 to 0.0110, and the absorption coefficient of the first auxiliary film layer 32 for visible light is 0.00002 to 0.0010.
- the amount of light emitted by the display panel 100 can be ensured, thereby improving the display effect of the display panel 100 .
- the extinction coefficient of the first inorganic film layer 31 to red light is 0.0006 to 0.0018
- the extinction coefficient of the first auxiliary film layer 32 to red light is 0.00002 to 0.00006.
- the first auxiliary film layer 32 has a low extinction coefficient for red light, which can ensure the amount of red light emitted by the display panel 100.
- the extinction coefficient of the first inorganic film layer 31 to green light is 0.002 to 0.0037, and the extinction coefficient of the first auxiliary film layer 32 to green light is 0.00003 to 0.00008.
- the first auxiliary film layer 32 has a low extinction coefficient for green light, which can ensure the amount of green light emitted by the display panel 100.
- the extinction coefficient of the first inorganic film layer 31 to blue light is 0.0039 to 0.0059
- the extinction coefficient of the first auxiliary film layer 32 to blue light is 0.002 to 0.001.
- the first auxiliary film layer 32 has a low extinction coefficient for blue light, which can ensure the amount of blue light emitted by the display panel 100.
- the organic film layer 33 can be manufactured and formed by, for example, an inkjet printing method.
- the first auxiliary film layer 32 can be arranged in many ways.
- the first auxiliary film layer 32 is laid out as a whole, and the first auxiliary film layer 32 can be formed by laying organic materials, that is, the first auxiliary film layer 32 is Organic material auxiliary film layer.
- the first auxiliary film layer 32 is made of organic materials, so that the first auxiliary film layer 32 can be made by the same process as the organic film layer 33.
- the organic film layer 33 can be formed continuously, which can simplify the process flow and improve the molding efficiency of the display panel 100.
- the first auxiliary film layer 32 and the organic film layer 33 have the same composition. Therefore, after the first auxiliary film layer 32 is formed, the organic film layer 33 can be continuously formed by only changing the parameters of the inkjet printing device.
- the thickness of the first auxiliary film layer 32 is 1 ⁇ m-10 ⁇ m. It is measured through experiments that when the thickness of the first auxiliary film layer 32 is within the above-mentioned thickness range, the light reflection between the first inorganic film layer 31 and the first auxiliary film layer 32 can be well improved without affecting the display panel 100 other properties.
- the thickness of the first auxiliary film layer 32 is 2 ⁇ m.
- the material of the first auxiliary film layer 32 includes semi-alicyclic polyimide, phenylquinoxaline polymer, methallyl type mercapto ester group-containing monomer, poly( One or more of 2-methallyl benzothiazole mercapto ester) and siloxane compounds.
- the first auxiliary film layer 32 is a nanoparticle layer, and the first auxiliary film layer 32 includes a plurality of nanoparticles 321.
- the first auxiliary film layer 32 includes a plurality of nanoparticles 321, and the nanoparticles 321 can reflect the light emitted by the light emitting unit 20.
- the nanoparticles 321 are generally spherical, the light reflected by the nanoparticles 321 has different exit directions, so the reflected light of the nanoparticles 321 will not overlap each other, which can improve the display panel 100 caused by the uneven thickness of the first inorganic film layer 31. Depending on the role deviation or uneven color rendering, the display effect of the display panel 100 is improved.
- the diameter d of the nanoparticle 321 is between 0.1 ⁇ m and 10 ⁇ m.
- the orthographic projection area of the plurality of nanoparticles 321 in the nanoparticle layer is greater than or equal to 50% of the orthographic projection area of the first inorganic film layer 31.
- the orthographic projected area of the nanoparticles 321 is greater than or equal to 50% of the orthographic projected area of the first inorganic film layer 31, which can ensure that the first inorganic film layer 31 is covered with enough nanoparticles 321 to ensure The reflected light of the nano particles 321 is sufficient, which can better improve the visual role deviation or uneven color rendering of the display panel 100 caused by the uneven thickness of the first inorganic film layer 31, and improve the display effect of the display panel 100.
- the nanoparticles 321 are uniformly distributed on the first inorganic film layer 31. In these alternative embodiments, it can be ensured that the reflected light formed by the nanoparticles 321 is dispersed in different positions on the first inorganic film layer 31, and the display effect of the display panel 100 is further improved.
- the uniform distribution of the nanoparticles 321 on the first inorganic film layer 31 is not a strict uniform distribution in the mathematical sense, but within the error range, the nanoparticles 321 are uniformly distributed on the first inorganic film layer 31, as long as the nanoparticles 321
- the reflected light formed by reflection can be sufficiently dispersed.
- the thickness of the nanoparticle layer is less than or equal to 2d.
- the thickness of the nanoparticle 321 is less than or equal to 2d, that is, one nanoparticle layer or two nanoparticle layers are laid on the first inorganic film layer 31, which can ensure that the nanoparticle layer can improve the The visual role deviation or uneven color rendering of the display panel 100 caused by the uneven thickness of the first inorganic film layer 31 can also reduce the process difficulty and save the manufacturing time of the display panel 100.
- the material of the nanoparticles 321 includes one or two of zinc oxide (ZnO) and titanium dioxide (TiO2).
- the display panel further includes a combined structure layer located on the side of the first auxiliary film layer 32 away from the first inorganic film layer 31, and the combined structure layer includes a first structure layer laminated in the light emitting direction,
- the refractive index of the second structure layer and the third structure layer, the first structure layer, the second structure layer and the third structure layer meet the following conditions:
- n 1 is the refractive index of the first structure layer
- n 2 is the refractive index of the second structure layer
- n 3 is the refractive index of the third structure layer.
- the three structures of the first structure layer, the second structure layer, and the third structure layer can be effectively improved.
- the light transmittance of the combined structure layer formed by the combination of the two can further increase the light transmittance of the display panel 100 and improve the power consumption of the display panel 100.
- the display panel 100 further includes a second inorganic film layer 34 and a third inorganic film layer 35 on the side of the organic film layer 33 away from the first auxiliary film layer 32.
- the second inorganic film layer The refractive index of the film layer 34 is greater than the refractive index of the organic film layer 33, and the refractive index of the third inorganic film layer 35 is greater than the refractive index of the second inorganic film layer 34.
- a second inorganic film layer 34 is provided between the organic film layer 33 and the third inorganic film layer 35, and the refractive index of the second inorganic film layer 34 is located between the organic film layer 33 and the third inorganic film layer. Between layer 35.
- the refractive index of the second inorganic film layer 34 is closer to the refractive index of the organic film layer 33 than the refractive index of the third inorganic film layer 35, which can increase the light transmission of the display panel 100 and improve the power consumption of the display panel 100.
- the light reflected by the contact interface of the organic film layer 33 and the second inorganic film layer 34 and the light reflected by the contact interface of the second inorganic film layer 34 and the third inorganic film layer 35 will interfere with each other, which improves the thickness of the organic film layer 33.
- the non-uniformity of the display panel 100 is caused by visual character deviation or uneven color rendering, which reduces the color cast of the display panel 100 and improves the display effect of the display panel 100.
- the combined structure layer is disposed on the encapsulation layer 30, and the first structure layer is an organic film layer 33, the second structure layer is a second inorganic film layer 34, and the third structure layer is a third inorganic film layer 35, that is, an organic film layer.
- the refractive indexes of the film layer 33, the second inorganic film layer 34, and the third inorganic film layer 35 satisfy the following conditions:
- n w2 is the refractive index of the second inorganic film layer 34
- n y is the refractive index of the organic film layer 33
- n w3 is the refractive index of the third inorganic film layer 35.
- the organic film layer 33, the second inorganic film layer 34, and the third inorganic film layer 35 satisfy the above relationship, the organic film layer 33, the second inorganic film layer 34 and the third inorganic film layer 35 can be effectively increased
- the light transmittance of the display panel 100 further increases the light transmittance of the display panel 100, and the power consumption of the display panel 100 is improved.
- the refractive index of the second inorganic film layer is 1.60-1.70, and optionally, the refractive index of the second inorganic film layer is 1.64.
- the refractive index of the organic film layer 33 is 1.5
- the refractive index of the third inorganic film layer 35 is 1.78
- the refractive index of the second inorganic film layer 34 may be 1.64.
- the thickness of the second inorganic film layer 34 is 80 nm-100 nm.
- the thickness of the second inorganic film layer 34 is 90 nm.
- the encapsulation layer 30 further includes a fourth inorganic film layer 36 on the side of the third inorganic film layer 35 away from the second auxiliary film layer 34.
- the refraction of the fourth inorganic film layer 36 The ratio is greater than the refractive index of the third inorganic film layer 35.
- the display panel 100 further includes a touch layer 40 on the side of the encapsulation layer 30 away from the light-emitting unit 20.
- the touch layer 40 includes a fifth inorganic film layer 41, a metal layer, and an optical adhesive layer that are sequentially stacked on the side of the encapsulation layer 30 away from the light-emitting unit 20. 47.
- the refractive index of the fourth inorganic film layer 36 is smaller than the refractive index of the fifth inorganic film layer 41.
- the fourth inorganic film layer 36 is disposed between the third inorganic film layer 35 and the fifth inorganic film layer 41, and the refractive index of the fourth inorganic film layer 36 is located in the third inorganic film layer 35. Between the refractive index of and the refractive index of the fifth inorganic film layer 41. The refractive index of the fourth inorganic film layer 36 is closer to the refractive index of the third inorganic film layer 35 than the refractive index of the fifth inorganic film layer 41, which can increase the light transmission of the display panel 100 and improve the power consumption of the display panel 100.
- the light reflected by the contact interface of the third inorganic film layer 35 and the fourth inorganic film layer 36 and the light reflected by the contact interface of the fourth inorganic film layer 36 and the fifth inorganic film layer 41 will interfere with each other, which improves the effect of the third inorganic film layer.
- the non-uniform thickness of the film layer 35 causes the display panel 100 to have a visual role shift or uneven color rendering, which reduces the color shift of the display panel 100 and improves the display effect of the display panel 100.
- the combined structure layer is located on the encapsulation layer 30, another part of the combined structure layer is located on the touch layer 40, and the first structure layer is the third inorganic film layer 35, and the second structure layer is the fourth inorganic film layer 36.
- the three-structure layer is the fifth inorganic film layer 41, that is, the refractive indexes of the third inorganic film layer 35, the fourth inorganic film layer 36, and the fifth inorganic film layer 41 satisfy the following conditions:
- n w4 is the refractive index of the fourth inorganic film layer 36
- n w3 is the refractive index of the third inorganic film layer 35
- n w5 is the refractive index of the fifth inorganic film layer 41.
- the third inorganic film layer 35, the fourth inorganic film layer 36 and the fifth inorganic film layer 41 satisfy the above relationship, the third inorganic film layer 35, the fourth inorganic film layer 36 and the fifth inorganic film layer can be effectively increased.
- the light transmittance of the three layers 41 further increases the light transmittance of the display panel 100 and improves the power consumption of the display panel 100.
- FIG. 8 There may be two combined structure layers, and one of the combined structure layers may be disposed on the encapsulation layer, that is, the first structure layer in one of the combined structure layers is the organic film layer 33, and the second structure layer
- the layer is the second inorganic film layer 34
- the third structure layer is the third inorganic film layer 35, that is, the refractive indexes of the organic film layer 33, the second inorganic film layer 34 and the third inorganic film layer 35 satisfy the above formula (2).
- At least part of the other composite structure layer is located on the encapsulation layer 30, and another part of the other composite structure layer is located on the touch layer 40. That is, the first structure layer in the other composite structure layer is the third inorganic film layer 35, and the second structure layer is the second structure layer.
- the third structure layer is the fifth inorganic film layer 41, that is, the refractive index relationship of the third inorganic film layer 35, the fourth inorganic film layer 36 and the fifth inorganic film layer 41 satisfies the above formula (3).
- the refractive index of the fourth inorganic film layer 36 is 1.80 to 1.90.
- the refractive index of the fourth inorganic film layer 36 is 1.84.
- the refractive index of the third inorganic film layer 35 is 1.78
- the refractive index of the fifth inorganic film layer 41 is 1.9
- the refractive index of the fourth inorganic film layer 36 may be 1.84.
- the thickness of the fourth inorganic film layer 36 is 80 nm-100 nm.
- the thickness of the fourth inorganic film layer 36 is 90 nm.
- the metal layer includes a first metal layer 42 and a second metal layer 45, a sixth inorganic film layer 43 is provided between the first metal layer 42 and the second metal layer 45, and a sixth inorganic film An optimized layer is arranged between the layer 43 and the optical adhesive layer 47, and the refractive index of the optimized layer is smaller than the refractive index of the sixth inorganic film layer 43 and greater than the refractive index of the optical adhesive layer 47.
- an optimized layer is provided between the sixth inorganic film layer 43 and the optical adhesive layer 47, and the refractive index of the optimized layer is smaller than the refractive index of the sixth inorganic film layer 43 and greater than the refractive index of the optical adhesive layer 47. Rate.
- the optimized layer includes a first optimized layer 44 and a second optimized layer 46, the first optimized layer 44 is located between the sixth inorganic film layer 43 and the second metal layer 45, and the second optimized layer 46 is located on the first Between the two metal layers 45 and the optical adhesive layer 47, the refractive index of the first optimized layer 44 is greater than the refractive index of the second optimized layer 46.
- the optimization layer includes a first optimization layer 44 and a second optimization layer 46, and in the direction from the sixth inorganic film layer 43 to the optical adhesive layer 47, the sixth inorganic film layer 43, the first The refractive index of the optimization layer 44, the second optimization layer 46, and the optical adhesive layer 47 decreases, which can further increase the total reflection angle, reduce the total reflection light amount, increase the light output of the display panel 100, and improve the power consumption of the display panel 100.
- the combined structure layer is disposed on the touch layer 40, the first structure layer is the sixth inorganic film layer 43, the second structure layer is the second optimized layer 46, and the third structure layer is the optical adhesive layer 47 , That is, the refractive indexes of the sixth inorganic film layer 43, the second optimized layer 46, and the optical adhesive layer 47 meet the following conditions:
- n y2 is the refractive index of the second optimized layer 46
- n 6 is the refractive index of the sixth inorganic film layer 43
- n o is the refractive index of the optical adhesive layer 47.
- the refractive index of the sixth inorganic film layer 43, the second optimized layer 46 and the optical adhesive layer 47 meets the above relationship, the transparency of the sixth inorganic film layer 43, the second optimized layer 46 and the optical adhesive layer 47 can be effectively improved.
- the light rate further increases the light transmittance of the display panel 100 and improves the power consumption of the display panel 100.
- the combined structure layer is disposed on the touch layer 40, the first structure layer is the sixth inorganic film layer 43, the second structure layer is the first optimized layer 44, and the third structure layer is the second optimized layer 46, that is, the sixth
- the refractive indexes of the inorganic film layer 43, the first optimized layer 44, and the second optimized layer 46 satisfy the following conditions:
- n y1 is the refractive index of the first optimized layer 44
- n y2 is the refractive index of the second optimized layer 46
- n 6 is the refractive index of the sixth inorganic film layer 43.
- the sixth inorganic film layer 43, the first optimized layer 44, and the second optimized layer 46 satisfy the above relationship, the sixth inorganic film layer 43, the first optimized layer 44, and the second optimized layer 46 can be effectively improved.
- the light transmittance of the display panel 100 further increases the light transmittance of the display panel 100, and the power consumption of the display panel 100 is improved.
- the first structure layer is the sixth inorganic film layer 43
- the second structure layer is the second optimized layer 46
- the third structure layer is the sixth inorganic film layer 43.
- the structural layer is the optical adhesive layer 47, that is, the refractive index of the sixth inorganic film layer 43, the second optimized layer 46, and the optical adhesive layer 47 satisfy the above-mentioned relational formula (4).
- the first structure layer is the sixth inorganic film layer 43
- the second structure layer is the first optimized layer 44
- the third structure layer is the second optimized layer 46, that is, the sixth inorganic film.
- the refractive indexes of the layer 43, the first optimized layer 44, and the second optimized layer 46 satisfy the above-mentioned relationship (5).
- one of the combined structure layers may be disposed on the encapsulation layer, that is, the first structure layer in one of the combined structure layers is the organic film layer 33, and the second structure layer It is the second inorganic film layer 34, and the third structure layer is the third inorganic film layer 35, that is, the refractive indexes of the organic film layer 33, the second inorganic film layer 34 and the third inorganic film layer 35 satisfy the above formula (2).
- At least part of the other composite structure layer is located in the encapsulation layer 30, another part of the other composite structure layer is located in the touch layer 40, the first structure layer in the other composite structure layer is the third inorganic film layer 35, and the second structure layer is the fourth structure layer.
- the inorganic film layer 36 and the third structure layer are the fifth inorganic film layer 41, that is, the refractive index relationship of the third inorganic film layer 35, the fourth inorganic film layer 36 and the fifth inorganic film layer 41 satisfies the above formula (3).
- Another combined structure layer is disposed on the touch layer 40, and the first structure layer is the sixth inorganic film layer 43, the second structure layer is the second optimized layer 46, and the third structure layer is the optical adhesive layer 47, namely The refractive indexes of the sixth inorganic film layer 43, the second optimized layer 46, and the optical adhesive layer 47 satisfy the above-mentioned relational formula (4).
- Another combined structure layer is disposed on the touch layer 40, the first structure layer is the sixth inorganic film layer 43, the second structure layer is the first optimized layer 44, and the third structure layer is the second optimized layer 46, that is, the sixth inorganic film.
- the refractive indexes of the layer 43, the first optimized layer 44, and the second optimized layer 46 satisfy the above-mentioned relationship (5).
- the refractive index of the second optimization layer 46 is 1.65-1.75.
- the refractive index of the second optimized layer 46 is 1.69.
- the refractive index of the first optimized layer 44 is 1.75 to 1.85.
- the refractive index of the first optimized layer 44 is 1.79.
- the refractive index of the sixth inorganic film layer 43 is 1.9 and the refractive index of the optical adhesive layer 47 is 1.5, then the refractive index of the second optimized layer 46 may be 1.69, and the refractive index of the first optimized layer 44 may be 1.79.
- the fifth inorganic film layer 41 and the sixth inorganic film layer 43 are, for example, silicon nitride layers.
- the first optimized layer 44 and the second optimized layer 46 are, for example, inorganic material layers, so that the first optimized layer 44 and the second optimized layer 46 can be formed by the same process as the sixth inorganic film layer 43, for example, the sixth inorganic film layer 43
- the chemical deposition method is used for forming, the first optimized layer 44 is an inorganic material layer, and the first optimized layer 44 can also be formed by chemical deposition method.
- the first optimized layer 44 can be formed without moving the chemical deposition equipment, only changing the parameters of the chemical deposition. In turn, the molding process of the display panel 100 can be simplified, and the molding efficiency of the display panel 100 can be improved.
- a third inorganic film layer 41 and the sixth inorganic film layer 43 may also be provided between the third inorganic film layer 41 and the sixth inorganic film layer 43.
- the optimized layer, the refractive index of the third optimized layer is located between the fifth inorganic film layer 41 and the sixth inorganic film layer 43, which can further improve the power consumption of the display panel 100 and improve the display effect of the display panel 100.
- a cover plate is further provided on the optical adhesive layer 47, for example.
- the thickness of the first optimization layer 44 is, for example, 80 nm-100 nm, for example, the thickness of the first optimization layer 44 is 90 nm.
- the thickness of the second optimization layer 46 is, for example, 80 nm-100 nm, for example, the thickness of the second optimization layer 46 is 90 nm.
- An embodiment of the present application also provides a display device, which may include the display panel 100 of any one of the foregoing embodiments. Since the display device of the embodiment of the present application includes the above-mentioned display panel 100, the display device of the embodiment of the present application has the beneficial effects of the above-mentioned display panel 100, which will not be repeated here.
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Abstract
一种显示面板(100)及显示装置,显示面板(100)包括:衬底(10);发光单元(20),位于衬底(10)上;封装层(30),位于发光单元(20)远离衬底(10)的一侧,封装层(30)包括层叠设置于发光单元(20)上的第一无机膜层(31)、第一辅助膜层(32)和有机膜层(33),第一无机膜层(31)的折射率和第一辅助膜层(32)的折射率之差的绝对值小于或等于0.05,且第一辅助膜层(32)对可见光的消光系数小于第一无机膜层(31)对可见光的消光系数。
Description
相关申请的交叉引用
本申请要求享有于2020年06月22日提交的名称为“显示面板及显示装置”的中国专利申请第202010573884.5号的优先权,该申请的全部内容通过引用并入本文中。
本申请涉及显示领域,具体涉及一种显示面板及显示装置。
有机发光二极管(Organic Light Emitting Diode,OLED)显示面板显示具有高色域,可柔性、响应速度快等优势,其市场占有率逐年增加。用户对OLED显示面板的显示效果要求也越来越高。但是OLED显示面板中由于器件和封装各膜层厚度随着蒸镀周期不断波动,膜层厚度均一性会加剧OLED视角特性离散程度,出现视角偏青和偏粉等问题。
因此,亟需提供一种新的显示面板及显示装置。
发明内容
本申请实施例提供一种显示面板及显示装置,旨在提高显示面板的显示效果。
本申请第一方面的实施例提供一种显示面板,显示面板包括:衬底;发光单元,位于衬底上;封装层,位于发光单元远离衬底的一侧,封装层包括依次层叠设置于发光单元上的第一无机膜层、第一辅助膜层和有机膜层,第一无机膜层的折射率和第一辅助膜层的折射率之差的绝对值小于或等于0.05,且第一辅助膜层对可见光的消光系数小于第一无机膜层对可见光的消光系数。
本申请第二方面的实施例提供一种显示装置,其包括上述任一实施方式的显示面板。
在本申请实施例的显示面板中,显示面板包括衬底、位于衬底上的发光单元和用于封装发光单元的封装层。封装层能够防止水氧入侵,提高发光单元的使用寿命。封装层包括第一无机膜层、第一辅助膜层和有机膜层。第一无机膜层和所述第一辅助膜层的折射率之差的绝对值小于或等于0.05,即第一无机膜层和所述第一辅助膜层的折射率接近,能够减少第一无机膜层和第一辅助膜层之间接触界面的反射光线。因而使得第一无机膜层的厚度不再对视角特性产生较大影响,改善由于第一无机膜层厚度不均一造成的视角色偏或显色不均,提高显示面板的显示效果。此外,所述第一辅助膜层对可见光的消光系数小于所述第一无机膜层对可见光的消光系数,能减少由于增加第一辅助膜层对显示面板出光量造成的影响。因此本申请实施例能够在保证显示面板出光量的前提下,提高显示面板的显示效果。
图1示出一种显示面板的局部剖视图。
图2示出根据本申请的显示面板的实施例俯视示意图;
图3示出图2中Q区域的一示例的局部放大图。
图4示出一种实施例中图3中A-A处的剖视图。
图5示出一种实施例中的显示面板的封装层的结构示意图。
图6示出另一种实施例中的显示面板的封装层的结构示意图。
图7示出又一种实施例中显示面板的封装层的结构示意图。
图8示出另一种实施例中3中A-A处的局部剖视图。
下面将详细描述本申请的各个方面的特征和示例性实施例,为了使本申请的目的、技术方案及优点更加清楚明白,以下结合附图及具体实施例,对本申请进行进一步详细描述。应理解,此处所描述的具体实施例仅 被配置为解释本申请,并不被配置为限定本申请。对于本领域技术人员来说,本申请可以在不需要这些具体细节中的一些细节的情况下实施。下面对实施例的描述仅仅是为了通过示出本申请的示例来提供对本申请更好的理解。
有机发光二极管(Organic Light Emitting Diode,OLED)显示面板100显示具有高色域,可柔性、响应速度快等优势,其市场占有率逐年增加。用户对OLED面板的显示效果要求也越来越高。
OLED显示面板中的发光器件和封装各膜层的厚度存在均一性的问题,尤其是当封装各膜层的厚度不均一时,会加剧OLED显示面板的视角特性离散程度,造成OLED显示面板视角偏青和偏粉等问题。在OLED显示面板的实际生产过程中,虽然通过膜层均一性改善和色度监控,能够在一定程度上挽回良率损失,但仍然不能根本性解决离散性问题。
参阅图1,一种OLED显示面板100’包括发光单元20’和位于发光单元20’上的封装层30’,封装层30’包括依次层叠设置的第一无机膜层31’、有机膜层33’和第二无机膜层35’。第一无机膜层31’和有机膜层33’之间的接触界面会反射发光单元20’发出的光。当第一无机膜层31’的厚度不均一时,第一无机膜层31’和有机膜层33’之间的接触界面的反射光线不一致。因此显示面板100’中位于发光器件22’上的封装层30’中的第一无机层的厚度波动对于白光轨迹以及视角色偏具有显著影响。这导致小视角偏粉和大视角偏青的发生的概率增加,造成良率损失。因此,有必要对显示面板100’进行改进,降低膜层厚度对视角特性影响的灵敏度。
本申请实施例提供一种显示面板,该显示面板可以是有机发光二极管(Organic Light Emitting Diode,OLED)显示面板。
参阅图2和图3,,本申请实施例的显示面板100包括显示区AA和非显示区NA。在其他实施例中,显示面板100可以为全面屏显示的显示面板100,显示面板100包括显示区AA。
显示面板100包括多个子像素110,多个子像素110例如为红色子像素111、蓝色子像素113和绿色子像素112。在其他实施例中,多个子像素110例如还可以是黄色子像素。
参阅图4,显示面板100包括衬底10、位于衬底10上的发光单元20及位于发光单元20远离衬底10的一侧的封装层30。封装层30包括依次层叠设置于发光单元20上的第一无机膜层31、第一辅助膜层32和有机膜层33,第一无机膜层31的折射率和第一辅助膜层32的折射率之差的绝对值小于或等于0.05,且第一辅助膜层32对可见光的消光系数小于第一无机膜层31对可见光的消光系数。
封装层30用于封装发光单元20,能够防止水氧入侵,提高发光单元20的使用寿命。第一无机膜层31和第一辅助膜层32的折射率之差的绝对值小于或等于0.05,即第一无机膜层31和第一辅助膜层32的折射率接近,能够减少第一无机膜层31和第一辅助膜层32之间接触界面的反射光线。因而使得第一无机膜层31的厚度不再对视角特性产生较大影响,改善由于第一无机膜层31厚度不均一造成的视角色偏或显色不均,提高显示面板100的显示效果。
此外,第一辅助膜层32对可见光的消光系数小于第一无机膜层31对可见光的消光系数,能够减小由于增加第一辅助膜层32对显示面板100的出光量造成的影响。因此本申请实施例能够在保证显示面板100出光量的前提下,提高显示面板100的显示效果。
消光系数(英文名:extinction coefficient)是被测对象(例如第一无机膜层31)对光的吸收大小值。消光系数表征被测对象对光的吸收能力。消光系数越大,被测对象对光的吸收能力越强,透过被测对象后的出光量越少。相反,消光系数越小,被测对象对光的吸收能力越弱,透过被测对象后的出光量越多。
可选的,在一些可选的实施例中,发光单元20和封装层30之间还设置有光取出层和光调制层,光调制层例如为氟化锂层,以提高显示面板100的出光效率。
衬底10可以采用玻璃、聚酰亚胺(Polyimide,PI)等透光材料制成。发光单元20例如包括驱动器件和发光器件,驱动器件例如包括像素驱动电路等。发光器件例如包括第一电极层、发光结构层和第二电极层。
在一些可选的实施例中,根据设计需要,发光结构层还可以包括空穴 注入层、空穴传输层、电子注入层或电子传输层中的至少一种。
第一电极层可以为透光电极,第一电极层可以包括氧化铟锡(Indium Tin Oxide,ITO)层或氧化铟锌层。或者,第一电极层也可以为反射电极层,包括第一透光导电层、位于第一透光导电层上的反射层以及位于反射层上的第二透光导电层。第一透光导电层、第二透光导电层可以是ITO、氧化铟锌等,反射层可以是金属层,例如是银材质制成。第二电极层可以包括镁银合金层。
示例性地,显示面板100还可以包括位于封装层30上方的偏光片和盖板,也可以直接在封装层30上方直接设置盖板,无需设置偏光片。在另一些可选的实施例中,封装层30上方还可以设置触摸电极。
可选的,第一辅助膜层32的折射率小于或等于第一无机膜层31的折射率。
在一些可选的实施例中,第一辅助膜层32的折射率为1.7~1.8。可选的,第一辅助膜层32的折射率和第一无机膜层31的折射率相等。
在这些可选的实施例中,第一辅助膜层32的折射率和第一无机膜层31的折射率相等,能够减小发光单元20的光经过第一辅助膜层32和第一无机膜层31之间的接触界面时产生的反射光,改善由于第一无机膜层31厚度不均一导致的显示面板100视角色偏或显色不均,进一步提高显示面板100的显示效果。
在一些可选的实施例中,第一辅助膜层32和第一无机膜层31的折射率均为1.75。根据实验测得,当第一辅助膜层32和第一无机膜层31的折射率均为1.75,既能够保证第一无机膜层31具有良好的保护效果,避免水氧入侵,还能够保证第一无机膜层31具有良好的弯折性能,提高显示面板100的抗弯性能。第一辅助膜层32和第一无机膜层31的折射率均为1.75,能够改善由于第一无机膜层31厚度不均一导致的显示面板100视角色偏或显色不均,进一步提高显示面板100的显示效果。
在一些可选的实施例中,第一无机膜层31对可见光的消光系数为0.0006~0.0110,第一辅助膜层32对可见光的消光系数的吸收系数为0.00002~0.0010。在这些可选的实施例中,当第一无机膜层31和第一辅助 膜层32的消光系数在上述范围之内时,能够保证显示面板100的出光量,进而提升显示面板100的显示效果。
在一些可选的实施例中,第一无机膜层31对红光的消光系数为0.0006~0.0018,第一辅助膜层32对红光的消光系数为0.00002~0.00006。在这些可选的实施例中,第一辅助膜层32对红光的消光系数较低,能够保证显示面板100红光的出光量。
在一些可选的实施例中,第一无机膜层31对绿光的消光系数为0.002~0.0037,第一辅助膜层32对绿光的消光系数为0.00003~0.00008。在这些可选的实施例中,第一辅助膜层32对绿光的消光系数较低,能够保证显示面板100绿光的出光量。
在一些可选的实施例中,第一无机膜层31对蓝光的消光系数为0.0039~0.0059,第一辅助膜层32对蓝光(波长为492nm~455nm的光)的消光系数为0.002~0.001。在这些可选的实施例中,第一辅助膜层32对蓝光的消光系数较低,能够保证显示面板100蓝光的出光量。
有机膜层33的成型工艺有多种,有机膜层33例如可以选用喷墨打印方式制造成型。
参阅图5,第一辅助膜层32的设置方式有多种,例如第一辅助膜层32整层铺设形成,第一辅助膜层32可以选用有机材料铺设形成,即第一辅助膜层32为有机材料辅助膜层。第一辅助膜层32选用有机材料制成,使得第一辅助膜层32可以选用和有机膜层33相同的工艺制成。在显示面板100的成型过程中,在形成第一辅助膜层32以后,无需移动和更换喷墨打印的器械,可以继续形成有机膜层33,能够简化工艺流程,提高显示面板100的成型效率。
可选的,第一辅助膜层32和有机膜层33的成分相同。使得在形成第一辅助膜层32后,只需改变喷墨打印器械的参数,即可继续形成有机膜层33。
在一些可选的实施例中,第一辅助膜层32的厚度为1μm~10μm。通过实验测得,当第一辅助膜层32的厚度在上述厚度范围之内时,能够很好的改善第一无机膜层31和第一辅助膜层32之间的反光,且不影响显示 面板100的其他性能。
可选的,第一辅助膜层32的厚度为2μm。
在一些可选的实施例中,第一辅助膜层32的材料包括半脂环聚酰亚胺、苯基喹喔啉类聚合物、甲基烯丙基型含巯酯基单体、聚(2-甲基烯丙基苯并噻唑巯酯)、和硅氧烷化合物中的一种或多种。
请一并参阅图6,在另一些可选的实施例中,第一辅助膜层32为纳米粒子层,第一辅助膜层32包括多个纳米粒子321。在这些可选的实施例中,第一辅助膜层32包括多个纳米粒子321,纳米粒子321可以反射发光单元20发出的光。且由于纳米粒子321通常呈球形,纳米粒子321反射的光线的出射方向不同,因此纳米粒子321的反射光线不会相互叠加,进而能够改善由于第一无机膜层31厚度不均一导致的显示面板100视角色偏或显色不均,提高显示面板100的显示效果。
在一些可选的实施例中,纳米粒子321的直径d为0.1μm~10μm之间。
在一些可选的实施例中,在显示面板100的厚度方向上,纳米粒子层中多个纳米粒子321的正投影面积大于或等于第一无机膜层31正投影面积的50%。
在这些可选的实施例中,纳米粒子321的正投影面积大于或等于第一无机膜层31正投影面积的50%,能够保证第一无机膜层31上覆盖有足够的纳米粒子321,保证纳米粒子321的反射光线足够多,进而能够更好地改善由于第一无机膜层31厚度不均一导致的显示面板100视角色偏或显色不均,提高显示面板100的显示效果。
在一些可选的实施例中,纳米粒子321在第一无机膜层31上均匀分布。在这些可选的实施例中,能够确保纳米粒子321形成的反射光线分散于第一无机膜层31上的不同位置,进一步提高显示面板100的显示效果。
纳米粒子321在第一无机膜层31上均匀分布并不是数学意义上的严格的均匀分布,而是在误差范围之内,纳米粒子321在第一无机膜层31上均匀分布,只要纳米粒子321反射形成的反射光线足够分散即可。
在一些可选的实施例中,纳米粒子层的厚度小于或等于2d。在这些可选的实施例中,纳米粒子321的厚度小于或等于2d,即在第一无机膜层31上铺设一层纳米粒子层或两层纳米粒子层,既能够保证纳米粒子层能够改善由于第一无机膜层31厚度不均一导致的显示面板100视角色偏或显色不均,还能够降低工艺难度,节省显示面板100的制造时间。
在一些可选的实施例中,纳米粒子321的材料包括氧化锌(ZnO)、二氧化钛(TiO2)中的一种或两种。
在一些可选的实施例中,显示面板还包括位于第一辅助膜层32远离第一无机膜层31一侧的组合结构层,组合结构层包括在出光方向上层叠设置的第一结构层、第二结构层和第三结构层,第一结构层、第二结构层和第三结构层的折射率满足以下条件:
n
1为第一结构层的折射率,n
2为第二结构层的折射率,n
3为第三结构层的折射率。
在这些可选的实施例中,当第一结构层、第二结构层和第三结构层的折射率满足上述关系时,能够有效提高第一结构层、第二结构层和第三结构层三者组合形成的组合结构层的透光率,进一步提高显示面板100的透光量,改善显示面板100的功耗。
参阅图7,在一些可选的实施例中,显示面板100还包括位于有机膜层33远离第一辅助膜层32一侧的第二无机膜层34和第三无机膜层35,第二无机膜层34的折射率大于有机膜层33的折射率,第三无机膜层35的折射率大于第二无机膜层34的折射率。
在这些可选的实施例中,有机膜层33和第三无机膜层35之间设置有第二无机膜层34,第二无机膜层34的折射率位于有机膜层33和第三无机膜层35之间。第二无机膜层34的折射率较第三无机膜层35的折射率更加接近有机膜层33的折射率,能够提高显示面板100的透光量,改善显示面板100的功耗。且,有机膜层33和第二无机膜层34的接触界面反射的光线与第二无机膜层34和第三无机膜层35的接触界面反射的光线会相互干扰,改善由于有机膜层33厚度不均一导致的显示面板100视角色偏或 显色不均,减少显示面板100的色偏,提高显示面板100的显示效果。
可选的,组合结构层设置于封装层30,且第一结构层为有机膜层33,第二结构层为第二无机膜层34,第三结构层为第三无机膜层35,即有机膜层33、第二无机膜层34和第三无机膜层35的折射率满足以下条件:
n
w2为第二无机膜层34的折射率,n
y为有机膜层33的折射率,n
w3为第三无机膜层35的折射率。
当有机膜层33、第二无机膜层34和第三无机膜层35的折射率满足上述关系时,能够有效提高有机膜层33、第二无机膜层34和第三无机膜层35三者的透光率,进一步提高显示面板100的透光量,改善显示面板100的功耗。
在一些可选的实施例中,第二无机膜层的折射率为1.60~1.70,可选的,第二无机膜层的折射率为1.64。例如有机膜层33的折射率为1.5,第三无机膜层35的折射率为1.78,那么第二无机膜层34的折射率可以为1.64。
在一些可选的实施例中,第二无机膜层34的厚度为80nm~100nm。可选的,第二无机膜层34的厚度为90nm。
参阅图8,在一些可选的实施例中,封装层30还包括位于第三无机膜层35远离第二辅助膜层34一侧的第四无机膜层36,第四无机膜层36的折射率大于第三无机膜层35的折射率。显示面板100还包括位于封装层30远离发光单元20一侧的触摸层40,触摸层40包括在封装层30远离发光单元20一侧依次层叠设置第五无机膜层41、金属层和光学胶层47,第四无机膜层36的折射率小于第五无机膜层41的折射率。
在这些可选的实施例中,第四无机膜层36设置在第三无机膜层35和第五无机膜层41之间有,第四无机膜层36的折射率位于第三无机膜层35的折射率和第五无机膜层41的折射率之间。第四无机膜层36的折射率较第五无机膜层41的折射率更加接近第三无机膜层35的折射率,能够提高显示面板100的透光量,改善显示面板100的功耗。且,第三无机膜层35 和第四无机膜层36的接触界面反射的光线与第四无机膜层36和第五无机膜层41的接触界面反射的光线会相互干扰,改善由于第三无机膜层35厚度不均一导致的显示面板100视角色偏或显色不均,减少显示面板100的色偏,提高显示面板100的显示效果。
可选的,至少部分组合结构层位于封装层30,另一部分组合结构层位于触摸层40,且第一结构层为第三无机膜层35,第二结构层为第四无机膜层36,第三结构层为第五无机膜层41,即第三无机膜层35、第四无机膜层36和第五无机膜层41的折射率满足以下条件:
n
w4为第四无机膜层36的折射率,n
w3为第三无机膜层35的折射率,n
w5为第五无机膜层41的折射率。
当第三无机膜层35、第四无机膜层36和第五无机膜层41的折射率满足上述关系时,能够有效提高第三无机膜层35、第四无机膜层36和第五无机膜层41三者的透光率,进一步提高显示面板100的透光量,改善显示面板100的功耗。
可选的,请继续参阅图8,组合结构层可以有两个,其中一个组合结构层可以设置于封装层,即其中一个组合结构层中的第一结构层为有机膜层33,第二结构层为第二无机膜层34,第三结构层为第三无机膜层35,即有机膜层33、第二无机膜层34和第三无机膜层35的折射率满足上述式(2)。
至少部分另一个组合结构层位于封装层30,另一部分另一个组合结构层位于触摸层40,即另外一个组合结构层中的第一结构层为第三无机膜层35,第二结构层为第四无机膜层36,第三结构层为第五无机膜层41,即第三无机膜层35、第四无机膜层36和第五无机膜层41的折射率关系满足上述式(3)。
在一些可选的实施例中,第四无机膜层36的折射率为1.80~1.90.可选的,第四无机膜层36的折射率为1.84。例如第三无机膜层35的折射率为1.78,第五无机膜层41的折射率为1.9,那么第四无机膜层36的折射率可以为1.84。
在一些可选的实施例中,第四无机膜层36的厚度为80nm~100nm。可选的,第四无机膜层36的厚度为90nm。
在一些可选的实施例中,金属层包括第一金属层42和第二金属层45,第一金属层42和第二金属层45之间设置有第六无机膜层43,第六无机膜层43和光学胶层47之间设置有优化层,优化层的折射率小于第六无机膜层43的折射率并大于光学胶层47的折射率。
在这些可选的实施例中,第六无机膜层43和光学胶层47之间设置有优化层,优化层的折射率小于第六无机膜层43的折射率并大于光学胶层47的折射率。通过设置优化层能够增大触摸层40的全反射角度,减少发生全反射的光量,进而提高出光量,改善显示面板100的功耗。
优化层的个数可以有一个,一个优化层设置于第六无机膜层43和第二金属层45之间,或者一个优化层设置于第二金属层45和光学胶层47之间。
在另一些实施例中,优化层包括第一优化层44和第二优化层46,第一优化层44位于第六无机膜层43和第二金属层45之间,第二优化层46位于第二金属层45和光学胶层47之间,第一优化层44的折射率大于第二优化层46的折射率。
在这些可选的实施例中,优化层包括第一优化层44和第二优化层46,且在第六无机膜层43至光学胶层47的方向上,第六无机膜层43、第一优化层44、第二优化层46、光学胶层47的折射率递减,能够进一步增大全反射角度,减少全反射光量,提高显示面板100的出光量,改善显示面板100的功耗。
可选的,组合结构层设置于触摸层40,且第一结构层为第六无机膜层43、第二结构层为所述第二优化层46,第三结构层为所述光学胶层47,即第六无机膜层43、第二优化层46和光学胶层47的折射率满足以下条件:
n
y2为第二优化层46的折射率,n
6为第六无机膜层43的折射率,n
o为光学胶层47的折射率。
当第六无机膜层43、第二优化层46和光学胶层47的折射率满足上述关系时,能够有效提高第六无机膜层43、第二优化层46和光学胶层47三者的透光率,进一步提高显示面板100的透光量,改善显示面板100的功耗。
可选的,组合结构层设置于触摸层40,第一结构层为第六无机膜层43、第二结构层为第一优化层44,第三结构层为第二优化层46,即第六无机膜层43、第一优化层44和第二优化层46的折射率满足以下条件:
n
y1为第一优化层44的折射率,n
y2为第二优化层46的折射率,n
6为第六无机膜层43的折射率。
当第六无机膜层43、第一优化层44和第二优化层46的折射率满足上述关系时,能够有效提高第六无机膜层43、第一优化层44和第二优化层46三者的透光率,进一步提高显示面板100的透光量,改善显示面板100的功耗。
可选的,组合结构层为两个,其中一个组合结构层设置于触摸层40,且第一结构层为第六无机膜层43、第二结构层为所述第二优化层46,第三结构层为所述光学胶层47,即第六无机膜层43、第二优化层46和光学胶层47的折射率满足上述关系式(4)。
另外一个组合结构层设置于触摸层40,第一结构层为第六无机膜层43、第二结构层为第一优化层44,第三结构层为第二优化层46,即第六无机膜层43、第一优化层44和第二优化层46的折射率满足上述关系式(5)。
在又一些可选的实施例中,组合结构层为多个,其中一个组合结构层可以设置于封装层,即其中一个组合结构层中的第一结构层为有机膜层33,第二结构层为第二无机膜层34,第三结构层为第三无机膜层35,即有机膜层33、第二无机膜层34和第三无机膜层35的折射率满足上述式(2)。
至少部分另一个组合结构层位于封装层30,另一部分另一个组合结构层位于触摸层40,另外一个组合结构层中的第一结构层为第三无机膜层 35,第二结构层为第四无机膜层36,第三结构层为第五无机膜层41,即第三无机膜层35、第四无机膜层36和第五无机膜层41的折射率关系满足上述式(3)。
还一个组合结构层设置于触摸层40,且第一结构层为第六无机膜层43、第二结构层为所述第二优化层46,第三结构层为所述光学胶层47,即第六无机膜层43、第二优化层46和光学胶层47的折射率满足上述关系式(4)。
再一个组合结构层设置于触摸层40,第一结构层为第六无机膜层43、第二结构层为第一优化层44,第三结构层为第二优化层46,即第六无机膜层43、第一优化层44和第二优化层46的折射率满足上述关系式(5)。
在一些可选的实施例中,第二优化层46的折射率为1.65~1.75。可选的,第二优化层46的折射率为1.69。可选的,第一优化层44的折射率为1.75~1.85。可选的,第一优化层44的折射率为1.79。例如第六无机膜层43的折射率为1.9,光学胶层47的折射率为1.5,那么第二优化层46的折射率可以为1.69,第一优化层44的折射率可以为1.79。
第五无机膜层41和第六无机膜层43例如为氮硅层。第一优化层44和第二优化层46例如为无机材料层,使得第一优化层44和第二优化层46能够选择与第六无机膜层43相同的工艺成型,例如第六无机膜层43选用化学沉积法成型,第一优化层44为无机材料层,第一优化层44也可以选择化学沉积法成型。在显示面板100的成型过程中,完成第六无机膜层43的成型以后,无需移动化学沉积器械,只需改变化学沉积的参数,即可形成第一优化层44。进而能够简化显示面板100的成型工艺,提高显示面板100的成型效率。
在一些可选的实施例中,当第五无机膜层41和第六无机膜层43的折射率不同时,第五无机膜层41和第六无机膜层43之间也可以设置有第三优化层,第三优化层的折射率位于第五无机膜层41和第六无机膜层43之间,能够进一步改善显示面板100的功耗,提高显示面板100的显示效果。
在一些可选的实施例中,光学胶层47上例如还设置有盖板。
在一些可选的实施例中,第一优化层44的厚度例如为80nm~100nm,例如的第一优化层44的厚度为90nm。
在一些可选的实施例中,第二优化层46的厚度例如为80nm~100nm,例如第二优化层46的厚度为90nm。
本申请实施例还提供一种显示装置,该显示装置可以包括上述任一实施方式的显示面板100。由于本申请实施例的显示装置包括上述的显示面板100,因此本申请实施例的显示装置具有上述显示面板100所具有的有益效果,在此不再赘述。
依照本申请如上文所述的实施例,这些实施例并没有详尽叙述所有的细节,也不限制该申请仅为所述的具体实施例。显然,根据以上描述,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本申请的原理和实际应用,从而使所属技术领域技术人员能很好地利用本申请以及在本申请基础上的修改使用。本申请仅受权利要求书及其全部范围和等效物的限制。
Claims (20)
- 一种显示面板,包括:衬底;发光单元,位于所述衬底上;封装层,位于所述发光单元远离所述衬底的一侧,所述封装层包括层叠设置于所述发光单元上的第一无机膜层、第一辅助膜层和有机膜层,所述第一无机膜层的折射率和所述第一辅助膜层的折射率之差的绝对值小于或等于0.05,且所述第一辅助膜层对可见光的消光系数小于所述第一无机膜层对可见光的消光系数。
- 根据权利要求1所述的显示面板,其中,所述第一辅助膜层的折射率为1.7~1.8。
- 根据权利要求2所述的显示面板,其中,所述第一辅助膜层的折射率和所述第一无机膜层的折射率相等。
- 根据权利要求2所述的显示面板,其中,所述第一辅助膜层和所述第一无机膜层的折射率均为1.75。
- 根据权利要求1所述的显示面板,其中,所述第一无机膜层对可见光的消光系数为0.0006~0.0110,所述第一辅助膜层对可见光的消光系数的吸收系数为0.00002~0.0010。
- 根据权利要求5所述的显示面板,其中,所述第一无机膜层对红光的消光系数为0.0006~0.0018,所述第一辅助膜层对红光的消光系数为0.00002~0.00006;和/或所述第一无机膜层对绿光的消光系数为0.002~0.0037,所述第一辅助膜层对绿光的消光系数为0.00003~0.00008。
- 根据权利要求5所述的显示面板,其中,所述第一无机膜层对蓝光的消光系数为0.0039~0.0059,所述第一辅助膜层对蓝光的消光系数为0.002~0.001。
- 根据权利要求1所述的显示面板,其中,所述第一辅助膜层为有机材料辅助膜层。
- 根据权利要求8所述的显示面板,其中,所述第一辅助膜层的厚度为1μm~10μm。
- 根据权利要求1所述的显示面板,其中,所述第一辅助膜层为纳米粒子层,所述纳米粒子层包括多个纳米粒子,所述纳米粒子的直径d为0.1μm~10μm。
- 根据权利要求10所述的显示面板,其中,在所述显示面板的厚度方向上,所述纳米粒子层中多个所述纳米粒子的正投影面积大于或等于所述第一无机膜层正投影面积的50%。
- 根据权利要求10所述的显示面板,其中,多个所述纳米粒子在所述第一无机膜层上均匀分布。
- 根据权利要求10所述的显示面板,其中,所述纳米粒子层的厚度小于或等于2d。
- 根据权利要求14所述的显示面板,其中,所述封装层还包括位于所述有机膜层远离所述第一辅助膜层一侧的第二无机膜层、第三无机膜层和第四无机膜层;所述显示面板还包括触摸层,所述触摸层包括在所述封装层远离所述发光单元一侧层叠设置第五无机膜层、金属层和光学胶层;所述组合结构层设置于所述封装层,且所述第一结构层为所述有机膜层,所述第二结构层为所述第二无机膜层,所述第三结构层为所述第三无机膜层;和/或至少部分所述组合结构层位于所述封装层,另一部分所述组合结构层位于所述触摸层,且所述第一结构层为所述第三无机膜层,所述第二结构 层为所述第四无机膜层,所述第三结构层为所述第五无机膜层。
- 根据权利要求15所述的显示面板,其中,所述第四无机膜层的折射率大于所述第三无机膜层的折射率,所述第四无机膜层的折射率小于所述第五无机膜层的折射率。
- 根据权利要求15所述的显示面板,其中,所述金属层包括第一金属层和第二金属层,所述第一金属层和所述第二金属层之间设置有第六无机膜层,所述第六无机膜层和所述光学胶层之间设置有优化层,所述优化层的折射率小于所述第六无机膜层的折射率并大于所述光学胶层的折射率。
- 根据权利要求17所述的显示面板,其中,所述优化层包括第一优化层和第二优化层,所述第一优化层位于所述第六无机膜层和所述第二金属层之间,所述第二优化层位于所述第二金属层和所述光学胶层之间,所述第一优化层的折射率小于所述第六无机膜层的折射率并大于所述第二优化层的折射率,所述第二优化层的折射率大于所述光学胶层的折射率。
- 根据权利要求18所述的显示面板,其中,所述组合结构层设置于所述触摸层,且所述第一结构层为所述第六无机膜层、所述第二结构层为所述第二优化层,所述第三结构层为所述光学胶层;和/或所述组合结构层设置于所述触摸层,所述第一结构层为所述第六无机膜层、所述第二结构层为所述第一优化层,所述第三结构层为所述第二优化层。
- 一种显示装置,包括根据权利要求1至19任一项所述的显示面板。
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