CN113054135A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113054135A CN113054135A CN202110258071.1A CN202110258071A CN113054135A CN 113054135 A CN113054135 A CN 113054135A CN 202110258071 A CN202110258071 A CN 202110258071A CN 113054135 A CN113054135 A CN 113054135A
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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- 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
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application provides a display panel and a display device. The display panel includes a substrate; the light-emitting functional layer is arranged on one side of the substrate and comprises a plurality of sub-pixels; the lens layer is arranged on one side, far away from the substrate, of the light-emitting functional layer and comprises a plurality of convex lenses; the color film layer is positioned on one side, far away from the substrate, of the lens layer and comprises a plurality of color resistors, each color resistor corresponds to one convex lens and one sub-pixel one to one, and the focus of the convex lens is positioned on the color resistor. In this application, one side of keeping away from the base plate at luminous functional layer sets up the lens layer, and the lens layer has the effect of assembling light, and light passes through the colour resistance after assembling through the lens layer for the light of outgoing increases in the follow display panel, thereby has improved display panel's luminance and colour purity.
Description
Technical Field
The present application relates to the field of display, and in particular, to a display panel and a display device.
Background
An Organic Light Emitting Diode (OLED) display panel has the advantages of mature device manufacturing process, self-luminescence, fast response speed, high contrast ratio, and the like, but mainly faces the problems of low brightness, impure chromaticity, color mixing, and the like.
Disclosure of Invention
The application provides a display panel and display device, has improved display panel's luminance and color purity.
A display panel, comprising:
a substrate;
the light-emitting functional layer is arranged on one side of the substrate and comprises a plurality of sub-pixels;
the lens layer is arranged on one side, far away from the substrate, of the light-emitting functional layer and comprises a plurality of convex lenses; and
the color film layer is arranged on one side, far away from the substrate, of the lens layer and comprises a plurality of color resistors, each color resistor corresponds to one of the convex lenses and one of the sub-pixels one to one, and the focuses of the convex lenses are located on the color resistors.
In an embodiment of the present application, the surface of the light emitting function layer has a plurality of grooves, and the convex lens fills and covers the grooves, and includes a first portion filled in the grooves and a second portion covering the grooves.
In an embodiment of the present application, the groove has a depth of 1 to 2 micrometers and the convex lens has a height of 8 to 12 micrometers.
In an embodiment of the present application, a diameter of a surface of the second portion facing the light emission function layer is larger than a diameter of the groove.
In an embodiment of the present application, the lens further includes an organic encapsulation layer, and the organic encapsulation layer is located between the lens layer and the color film layer.
In an embodiment of the present application, a thickness of the organic encapsulation layer is equal to a difference between a focal length of the convex lens and a depth of the groove.
In an embodiment of the present application, the organic encapsulation layer has a thickness of 20 micrometers to 22 micrometers.
In the embodiment of this application, the luminous functional layer includes anode layer, pixel definition layer, luminescent layer and cathode layer, the anode layer is located the substrate surface, pixel definition level is in the anode layer is kept away from one side of substrate, pixel definition level includes a plurality of pixel openings, the pixel opening exposes the anode layer, the luminescent layer is located in the pixel opening, just the luminescent layer with the anode layer electricity is connected, the cathode layer covers pixel definition level with the luminescent layer, and with the luminescent layer electricity is connected, the recess is located the cathode layer is kept away from one side of luminescent layer.
In an embodiment of the application, the light emitting functional layer further includes a thin film encapsulation layer, the thin film encapsulation layer covers the cathode layer, and the groove is located on a side of the thin film encapsulation layer away from the light emitting layer.
Accordingly, the present application provides a display device comprising the display panel as described above.
The present application provides a display panel, including: a substrate; the light-emitting functional layer is arranged on one side of the substrate and comprises a plurality of sub-pixels; the lens layer is arranged on one side, far away from the substrate, of the light-emitting functional layer and comprises a plurality of convex lenses; the color film layer is positioned on one side, far away from the substrate, of the lens layer and comprises a plurality of color resistors, each color resistor corresponds to one convex lens and one sub-pixel one to one, and the focus of the convex lens is positioned on the color resistor. In this application, one side of keeping away from the base plate at luminous functional layer sets up the lens layer, and the lens layer has the effect of assembling light, and light passes through the colour resistance after assembling through the lens layer for the light of outgoing increases in the follow display panel, thereby has improved display panel's luminance and colour purity.
Drawings
In order to more clearly illustrate the technical solutions in the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present application belong to the protection scope of the present application.
Fig. 1 is a schematic structural diagram of an embodiment of a display panel provided in the present application.
Fig. 2 is a flowchart of a method for manufacturing a display panel according to the present application.
Fig. 3 is a schematic structural diagram of a lens layer manufactured by inkjet printing in the manufacturing method of the display panel provided by the present application.
Fig. 4 is a schematic diagram illustrating a principle of calculating an organic encapsulation layer in the method for manufacturing a display panel according to the present application.
Fig. 5 is a schematic plan view of a display device provided in the present application.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the application may be practiced. In the drawings, elements having similar structures are denoted by the same reference numerals.
The present application will be described in detail with reference to specific embodiments.
Referring to fig. 1, a display panel 100 is provided. The display panel 100 includes a substrate 10, a light-emitting functional layer 20, a lens layer 30, and a color film layer 40. The light emitting function layer 20 is disposed on one side of the substrate 10. The light emitting function layer 20 includes a plurality of sub-pixels 201. The lens layer 30 is disposed on a side of the light-emitting functional layer 20 away from the substrate 10. The lens layer 30 includes a plurality of convex lenses 301. The color film layer 40 is disposed on a side of the lens layer 30 away from the substrate 10. The color film layer 40 includes a plurality of color resistors 401. Each color resistor 401 corresponds to one convex lens 301 and one sub-pixel 201. The focal point of the convex lens 301 is located on the color resistor 401.
The substrate 10 may be an array substrate. The light emitting function layer 20 includes a plurality of sub-pixels 201. The pixel comprises at least one red sub-pixel, at least one green sub-pixel and at least one blue sub-pixel. The color film layer 40 includes a plurality of color resistors 401. The color film layer 40 includes at least one red color resistor, at least one green color resistor, and at least one blue color resistor. Each color resistor 401 corresponds to one convex lens 301 and one sub-pixel 201. The focal point of the convex lens 301 is located on the color resistor 401. In this application, one side of keeping away from base plate 10 at luminous functional layer 20 has set up lens layer 30, and lens layer 30 can play the effect of assembling light, and light passes through color resistance 401 after lens layer 30 assembles for the light of outgoing increases in following display panel 100, thereby has improved display panel 100's luminance and color purity. Compared with the conventional display panel, the light-emitting rate of the display panel 100 in the present application can be increased to 64%, the brightness can be increased to 450nits, and the color purity can be increased to 9%.
The lens layer 30 may be an acrylic material of acrylic. Specifically, the lens layer 30 may be formed by mixing methacrylate, a polymer compound, and an additive.
The color film layer 40 also includes several black matrices 402. The black matrix 402 and the color resistor 401 are located on the same layer, and the black matrix 402 and the color resistor 401 are alternately arranged. The black matrix 402 can absorb the light emitted from the light-emitting functional layer 20, thereby preventing the light of different colors from being mixed when being led out through the color resistor 401, and improving the color purity of the display panel 100.
The surface of the light-emitting functional layer 20 has a plurality of grooves 202. The convex lens 301 fills and covers the groove 202. Each groove 202 corresponds to one sub-pixel 201. The convex lens 301 includes a first portion 301a filled in the groove 202 and a second portion 301b covering the groove 202.
The convex lens 301 fills and covers the groove 202, and simultaneously can completely cover one sub-pixel 201, which is beneficial to gathering the light emitted from the sub-pixel 201, and can also prevent the light emitted by the sub-pixels emitting different colors of light from mixing, thereby improving the brightness and color purity of the display panel 100.
The depth of the groove 202 may be 1 micron to 2 microns. Specifically, the depth of the groove 202 is 1 micron, 1.5 microns, or 2 microns. The height of the convex lens 301 may be 8-12 microns. Specifically, the height of the convex lens 301 is 8 micrometers, 9 micrometers, 10 micrometers, 11 micrometers, or 12 micrometers.
The groove 202 is filled and covered by the convex lens 301 by setting the depth of the groove 202 to be 1-2 micrometers and the height of the convex lens 301 to be 8-12 micrometers. The convex lens 301 has a function of converging light, which is beneficial to improving the brightness and color purity of the display panel 100.
The diameter of the second portion 301b of the convex lens 301 facing the surface of the light emission functional layer 20 is larger than the diameter of the groove 202.
The light emitted by the sub-pixel 201 is spread in all directions. The diameter of the second part 301b of the convex lens 301 facing the surface of the light-emitting functional layer 20 is larger than that of the groove 202, so that the convex lens 301 can completely cover the sub-pixel 201, light emitted by the sub-pixel 201 and collected by the convex lens 301 in all directions can be favorably guided out, and the brightness and the color purity of the display panel 100 can be favorably improved.
The display panel 100 further includes an organic encapsulation layer 50. The organic encapsulation layer 50 is located between the lens layer 30 and the color film layer 40.
The organic encapsulation layer 50 may block moisture, protect the light emitting functional layer 20, and prolong the lifetime of the display panel 100. The refractive index of the organic encapsulation layer 50 is different from that of the lens layer 30, which is beneficial to improving the light-guiding rate of the light emitted by the light-emitting functional layer 20, and further improving the brightness of the display panel 100. The organic encapsulation layer 50 may be formed of an epoxy-based organic polymer material. Specifically, the organic encapsulation compound 50 may be a bisphenol a epoxy resin and a hexahydrophthalic acid epoxy resin.
The organic encapsulation layer 50 may have a thickness of 20 microns to 22 microns. Specifically, the organic encapsulation layer 50 has a thickness of 20 microns, 21 microns, or 22 microns.
The organic encapsulation layer 50 is located between the lens layer 30 and the color film layer 40. The thickness of the organic encapsulating layer 50 determines the distance between the lens layer 30 and the color film layer 40, and in order to enable the focal point of the convex lens 301 to be located on the color resistor 401, and better improve the light gathering effect of the convex lens 301, the thickness of the organic encapsulating layer 50 is set to be 20 micrometers-22 micrometers.
The light emitting function layer 20 includes an anode layer 203, a pixel defining layer 204, a light emitting layer 205, and a cathode layer 206. The anode layer 203 is located on the surface of the substrate 10. The pixel defining layer 204 is located on a side of the anode layer 203 remote from the substrate 10. The pixel defining layer 204 includes a plurality of pixel openings 2041. The pixel opening 2041 exposes the anode layer 203. The light emitting layer 205 is located in the pixel opening 2041, and the light emitting layer 205 is electrically connected to the anode layer 203. The cathode layer 206 covers the pixel defining layer 204 and the light emitting layer 205, and is electrically connected to the light emitting layer 205. The grooves 202 are located at the side of the cathode layer 206 facing away from the light emitting layer 205.
The common film layer in the light emitting functional layer 20 can be prepared in the same process, which simplifies the preparation process of the display panel 100.
The light emitting function layer 20 further includes a thin film encapsulation layer 207. A thin film encapsulation layer 207 covers the cathode layer 206. The groove 202 is located on the side of the thin film encapsulation layer 207 away from the light emitting layer 205.
The film encapsulation layer 207 can isolate water vapor, protect the light emitting function layer 20 from external influences, and prolong the service life of the display panel 100. The thin film encapsulation layer 207 may be an inorganic encapsulation layer. The thin film encapsulation layer 207 may be made of silicon oxide (SiO)x) Silicon nitride (SiN)x) Silicon oxynitride (SiO)xNy) And silicon oxide/silicon nitride (SiO)x/SiNx) One or more of (a).
The refractive indexes of the thin film encapsulation layer 207, the lens layer 30 and the organic encapsulation layer 50 are different, which is beneficial to improving the light-guiding rate of the light emitted by the light-emitting function layer 20, and further improving the brightness of the display panel 100.
The display panel 100 further includes a protective layer 60. The protection layer 60 is disposed on a side of the color film layer 40 away from the organic encapsulation layer 50.
The protection layer 60 can prevent the color film layer 40 from being damaged, and can prolong the life of the display panel 100. The protective layer 60 may be formed of Polyethylene Terephthalate (PET), Polyethylene (PE), or polymethyl methacrylate (PMMA). The protective layer 60 has the characteristics of high strength, good transparency, acid and alkali resistance, antistatic property and the like.
Referring to fig. 2, the present application further provides a method for manufacturing the display panel 100 shown in fig. 1. The method specifically comprises the following steps:
step B201: a substrate is provided.
Step B202: the manufacturing method comprises the steps that an anode layer and a pixel defining layer are sequentially formed on a substrate, the pixel defining layer is patterned to form a pixel opening, the anode layer is exposed out of the pixel opening, a light emitting layer is formed in the pixel opening, the light emitting layer is electrically connected with the anode layer, a cathode layer is formed on one side, away from the light emitting layer, of the pixel defining layer and one side, away from the substrate, of the light emitting layer, the cathode layer is electrically connected with the light emitting layer, a thin film packaging layer is formed on one side, away from the light emitting layer, of the cathode layer, and a groove is located on one side, away.
Step B203: and forming a lens layer in the groove, wherein the lens layer comprises a plurality of convex lenses, and the convex lenses fill and cover the groove.
Referring to fig. 3, in the present application, the lens layer 30 may be manufactured by Ink Jet Printing (IJP), so as to simplify the manufacturing process and conveniently and efficiently adjust the placement height, the arch height, the caliber, and other structural parameters of the convex lens 301.
Specifically, organic ultraviolet curing ink with high refractive index is adopted, the viscosity of the organic ultraviolet curing ink is 30cps to 35cps, the surface tension is 40N/m to 50N/m, and the density is 2.0g/cm3-2.2g/cm3The light transmittance is more than 98 percent, and the refractive index is 1.46. Printing a semispherical organic UV-curable ink on the groove 202 corresponding to each sub-pixel 201, irradiating with 395 nm UV light with irradiation energy per unit area greater than 15MJ/cm2A convex lens 301 is formed. The convex lens 301 fills and covers the groove 202.
Step B204: and forming an organic packaging layer on one side of the lens layer far away from the substrate.
Step B205: and forming a color film layer on one side of the organic packaging layer far away from the lens layer.
The color film layer comprises a plurality of color resistors. The color film layer comprises at least one red color resistor, at least one green color resistor and at least one blue color resistor. Each color resistor corresponds to one convex lens and one sub-pixel one by one. The focal point of the convex lens is located on the color resistance. The thickness of the organic encapsulation layer determines whether the focal length of the convex lens can be located on the color resistance.
Step B206: and forming a protective layer on one side of the color film layer far away from the organic packaging layer.
The protective layer can prevent the color film layer from being damaged and can prolong the service life of the display panel.
Referring to fig. 4, a method for calculating the thickness of the organic encapsulation layer 50 between the lens layer 30 and the color film layer 40 is also provided.
In the present application, the convex lens 301 is a sphere, and the center of the convex lens 301 is the point O. The radius of curvature R of the convex lens 301 is a line segment OB, which extends to a point O'. The planar radius r of the convex lens 301 is a line segment BB'. The thickness d of the second portion 301B of the convex lens 301 covering the groove 202 is the line segment a 'B'. The vertical light ray AB emitted from the point a on the edge of the sub-pixel 201 intersects the arc surface of the convex lens 301 at the point B. Under the action of the convex lens 301, the propagation direction of the vertical light ray AB emitted from the edge a point of the sub-pixel 201 is changed, and the light ray AB propagates along BF. The refractive index of the convex lens 301 is n. The point F is the focal point of the convex lens 301 and is located on the color resistor 401. And connecting the point O and the point F to form a line segment OF. Segment OF is parallel to segment AB. The thickness of the organic encapsulation layer 50 is a line segment FB'.
sin∠FBO′＝nsin∠ABO
∠FBO′＝∠ABO+∠BFO
sin∠ABOcos∠BFO+cos∠ABOsin∠BFO＝sin∠FBO′
BB′2+FB′2＝FB2
Referring to fig. 5, the present application further provides a display device 1000, and the display device 1000 includes the display panel 100 according to any of the foregoing embodiments. The display device 1000 includes, but is not limited to, the following types of electronic devices: a rollable or foldable mobile phone, a watch, a bracelet, a television or other wearable display or touch control electronic device, and a flexible smart phone, a tablet computer, a notebook computer, a desktop display, a television, smart glasses, a smart watch, an ATM machine, a digital camera, a vehicle-mounted display, a medical display, an industrial display, an electronic paper book, an electrophoretic display device, a game machine, a transparent display, a double-sided display, a naked-eye 3D display, a mirror display device, a semi-reflective and semi-transparent display device, or a flexible touch screen, etc.
In this application, one side of keeping away from the base plate at luminous functional layer sets up the lens layer, and the lens layer has the effect of assembling light, and light passes through the colour resistance after assembling through the lens layer for the light of outgoing increases in the follow display panel, thereby has improved display panel's luminance and colour purity. The display device comprises the display panel according to any one of the preceding embodiments, so that the display effect of the display device is improved.
In summary, although the present application has been described with reference to the above embodiments, the above embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. A display panel, comprising:
a substrate;
the light-emitting functional layer is arranged on one side of the substrate and comprises a plurality of sub-pixels;
the lens layer is arranged on one side, far away from the substrate, of the light-emitting functional layer and comprises a plurality of convex lenses; and
the color film layer is arranged on one side, far away from the substrate, of the lens layer and comprises a plurality of color resistors, each color resistor corresponds to one of the convex lenses and one of the sub-pixels one to one, and the focuses of the convex lenses are located on the color resistors.
2. The display panel according to claim 1, wherein the surface of the light-emitting functional layer has a plurality of grooves, and the convex lens fills and covers the grooves, and the convex lens includes a first portion filled in the grooves and a second portion covering the grooves.
3. The display panel according to claim 2, wherein the groove has a depth of 1 to 2 μm and the convex lens has a height of 8 to 12 μm.
4. The display panel according to claim 2, wherein a diameter of a surface of the second portion facing the light emission function layer is larger than a diameter of the groove.
5. The display panel of claim 2, further comprising an organic encapsulation layer between the lens layer and the color film layer.
6. The display panel of claim 5, wherein the thickness of the organic encapsulation layer is equal to the difference between the focal length of the convex lens and the depth of the groove.
7. The display panel of claim 5, wherein the organic encapsulation layer has a thickness of 20-22 microns.
8. The display panel of claim 2, wherein the light emitting function layer comprises an anode layer, a pixel defining layer, a light emitting layer, and a cathode layer, the anode layer is disposed on the substrate surface, the pixel defining layer is disposed on a side of the anode layer away from the substrate, the pixel defining layer comprises a plurality of pixel openings, the pixel openings expose the anode layer, the light emitting layer is disposed in the pixel openings, the light emitting layer is electrically connected to the anode layer, the cathode layer covers the pixel defining layer and the light emitting layer and is electrically connected to the light emitting layer, and the groove is disposed on a side of the cathode layer away from the light emitting layer.
9. The display panel according to claim 8, wherein the light emitting function layer further comprises a thin film encapsulation layer covering the cathode layer, and the groove is located on a side of the thin film encapsulation layer away from the light emitting layer.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110258071.1A CN113054135A (en) | 2021-03-09 | 2021-03-09 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110258071.1A CN113054135A (en) | 2021-03-09 | 2021-03-09 | Display panel and display device |
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| CN113054135A true CN113054135A (en) | 2021-06-29 |
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| CN202110258071.1A Pending CN113054135A (en) | 2021-03-09 | 2021-03-09 | Display panel and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113629209A (en) * | 2021-07-26 | 2021-11-09 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
| CN114335387A (en) * | 2021-12-30 | 2022-04-12 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2023236676A1 (en) * | 2022-06-10 | 2023-12-14 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method therefor, and display device |
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