CN111129352A - OLED display panel and display device - Google Patents
OLED display panel and display device Download PDFInfo
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- CN111129352A CN111129352A CN202010001115.8A CN202010001115A CN111129352A CN 111129352 A CN111129352 A CN 111129352A CN 202010001115 A CN202010001115 A CN 202010001115A CN 111129352 A CN111129352 A CN 111129352A
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- 238000005452 bending Methods 0.000 claims abstract description 51
- 239000013307 optical fiber Substances 0.000 claims abstract description 35
- 239000000835 fiber Substances 0.000 claims description 34
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 11
- 238000005538 encapsulation Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims 1
- 230000002238 attenuated effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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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
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Abstract
The invention relates to the technical field of display, and discloses an OLED display panel and a display device, wherein the OLED display panel comprises: the light emitting device comprises a plurality of light emitting devices arranged in a display area, the light emitting devices are in one-to-one correspondence with sub-pixels of the display area, a lens assembly is arranged on one side of a light emitting surface of at least part of the light emitting devices in the bending area, the lens assembly comprises a convex lens and an optical fiber lens which are oppositely arranged and have the same axial direction, the optical fiber lens is arranged on one side of the convex lens, which is deviated from the light emitting devices, and the convex curved surface of the convex lens faces the optical fiber. In the OLED display panel, the prism component is arranged on one side of the light-emitting surface of the light-emitting device with abnormally strong light-emitting in the bending area of the display surface, and light emitted by the light-emitting device is attenuated after entering the optical fiber lens at a certain angle after passing through the convex lens, so that the light-emitting intensity of the light-emitting device with the abnormally strong light-emitting is reduced, the light-emitting intensity of each light-emitting device in the bending area is balanced, and the phenomenon that the bending area turns green or red in the prior art is relieved.
Description
Technical Field
The invention relates to the technical field of display, in particular to an OLED display panel and a display device.
Background
In the present display field, the application of the OLED curved screen is more and more extensive, and especially, the edge portion of the display screen is set to be arc-shaped, which is a design that more display screens are used in the present display screen, but because the absolute angles of the curved display screen viewed in the flat area and the arc-shaped edge area of the display area are different, the arc-shaped edge area may be bluish or reddish, which easily causes the display image to be uneven, and affects the display effect.
Disclosure of Invention
The invention discloses an OLED display panel and a display device, wherein a prism assembly is arranged at one side of the light-emitting surface of a light-emitting device with abnormally strong light-emitting in a bending area of a display surface, and light emitted by the light-emitting device enters an optical fiber lens at a certain angle after passing through a convex lens and is attenuated, so that the light-emitting intensity of the light-emitting device with strong light-emitting intensity is reduced, the light-emitting intensity of each light-emitting device in the bending area is balanced, the phenomenon of bluish or reddish bending area in the prior art is effectively relieved, the whole display picture is uniform, and the display quality is improved.
In order to achieve the purpose, the invention provides the following technical scheme:
an OLED display panel having a display area of a display surface including a flat area and a curved area, the OLED display panel comprising:
the light emitting devices are arranged in the display area and correspond to the sub-pixels of the display area one by one, a lens assembly is arranged on one side of a light emitting surface of at least part of the light emitting devices in the bending area, the lens assembly comprises a convex lens and an optical fiber lens which are oppositely arranged and have the same axial direction, the optical fiber lens is positioned on one side of the convex lens, which is deviated from the light emitting devices, and the convex curved surface of the convex lens faces the optical fiber lens; the lens component is used for at least attenuating the light emitted by the light emitting device with relatively strong luminous intensity in the light emitting devices in the bending area so as to enable the light emitted by the bending area to be uniform.
The OLED display panel is a display panel with curved surface display, the display area of the display panel is divided into a flat area with plane display and a bending area with certain curvature, and the bending area can be arranged on two opposite side parts in the peripheral side of the OLED display panel, wherein the display area of the OLED display panel is provided with a plurality of light-emitting devices distributed in an array manner, the plurality of light-emitting devices are arranged in one-to-one correspondence with sub-pixels of the display area, one side of the bending area with the light-emitting surface of at least part of the light-emitting devices is provided with a lens assembly, each lens assembly comprises a convex lens and a cylindrical optical fiber lens, wherein the convex lens is a micro convex lens which is also a micro optical fiber lens, the optical fiber lens is positioned on one side of the convex lens, which is far away from the light-emitting devices, the convex curved surface of the convex lens faces the optical fiber lens, and the flat surface, the light in the light emitting device passes through the convex lens and then enters the fiber lens at a certain angle, the fiber lens can attenuate the light, and the light intensity of the corresponding light emitting device can be weakened, wherein the lens component is arranged on the light emitting surface of the light emitting device with the light intensity stronger than that of other light emitting devices in the bending area of the display surface, so that the light emitting of the light emitting device with the stronger light emitting intensity is attenuated, the light intensity of the light emitting device with the stronger light emitting intensity is reduced to achieve the effect of light emitting balance of each light emitting device, the phenomenon of green or red light emitting in the bending area in the prior art is relieved, the color cast of the flat area and the bending area is reduced, the whole display picture is uniform, and the display quality is.
Therefore, in the above OLED display panel, in the prism assembly is disposed on the light-emitting surface side of the light-emitting device with abnormally strong light-emitting in the bending region of the display surface, the light emitted by the light-emitting device is attenuated after passing through the convex lens and entering the optical fiber lens at a certain angle, so that the light-emitting intensity of the light-emitting device with strong light-emitting is reduced, the light-emitting intensity of each light-emitting device in the bending region is balanced, the phenomenon of bluing or reddening in the bending region in the prior art is effectively alleviated, the whole display image is uniform, and the display quality is improved.
Optionally, one said lens assembly is disposed opposite one said light emitting device of said bending zone.
Alternatively, the lengths of the fiber lenses corresponding to the sub-pixels having the same color are the same.
Optionally, one of the lens assemblies is disposed opposite to the light emitting device corresponding to one of the pixel units of the bending region, and the pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
Optionally, the curvature of the convex curved surface of the convex lens is inversely proportional to the decay rate of the lens assembly to the light intensity of the light ray.
Optionally, the length of the fiber lens is proportional to the attenuation rate of the light intensity of the light by the lens assembly.
Optionally, in each of the lens assemblies, the convex lens is disposed in contact with the fiber lens; or,
in each lens component, a space is arranged between the convex lens and the fiber lens.
Optionally, in each of the lens assemblies, an orthographic projection of the fiber lens on a plane perpendicular to the central axis of the convex lens is smaller than or equal to an orthographic projection of the convex lens on a plane perpendicular to the central axis of the convex lens.
Optionally, in each lens assembly, a central axis of the convex lens coincides with a central axis of the fiber lens.
Optionally, the OLED display panel further includes a substrate base plate, the plurality of light emitting devices are disposed on the substrate base plate, an encapsulation layer is disposed on one side of the light emitting devices, which deviates from the substrate base plate, and the prism assembly is located on one side of the encapsulation layer, which deviates from the light emitting devices.
The invention also provides a display device which comprises any one of the OLED display panels provided in the technical scheme.
Drawings
Fig. 1 is a schematic structural diagram of an OLED display panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a lens assembly according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a lens assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a lens assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of a light ray propagating in a lens assembly according to an embodiment of the present invention;
icon: 1-a substrate base plate; 2-an organic light-emitting layer; 3-an encapsulation layer; a 4-lens assembly; 41-convex lens; 42-fiber lens.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 4, an embodiment of the present invention provides an OLED display panel, a display area of a display surface of the OLED display panel including a flat area (an AA area shown in fig. 1) and a curved area (a B area shown in fig. 1), the OLED display panel including: the display device comprises a plurality of light emitting devices arranged in a display area, the plurality of light emitting devices correspond to sub-pixels of the display area one by one, a lens component 4 is arranged on one side of a light emergent surface of at least part of the light emitting devices in a bending area, the lens component 4 comprises a convex lens 41 and an optical fiber lens 42 which are oppositely arranged and have the same axial direction, the optical fiber lens 42 is positioned on one side of the convex lens 41, which is far away from the light emitting devices, and a convex curved surface of the convex lens 41 faces the optical fiber lens 42; the lens assembly 4 is used for at least attenuating the light emitted from the light emitting device with relatively strong light intensity in the light emitting device in the bending area so as to make the light emitted from the bending area uniform.
The OLED display panel is a display panel with curved surface display, the display area of the display panel is divided into a flat area with plane display and a bending area with certain curvature, and the bending area can be arranged on two opposite side parts in the peripheral side of the OLED display panel, wherein the display area of the OLED display panel is provided with a plurality of light-emitting devices distributed in an array manner, the plurality of light-emitting devices are arranged in one-to-one correspondence with sub-pixels of the display area, one side of the bending area with the light-emitting surface of at least part of the light-emitting devices is provided with a lens assembly, each lens assembly comprises a convex lens and a cylindrical optical fiber lens, wherein the convex lens is a micro convex lens which is also a micro optical fiber lens, the optical fiber lens is positioned on one side of the convex lens, which is far away from the light-emitting devices, the convex curved surface of the convex lens faces the optical fiber lens, and the flat surface, the light in the light emitting device passes through the convex lens and then enters the fiber lens at a certain angle, the fiber lens can attenuate the light, and the light intensity of the corresponding light emitting device can be weakened, wherein the lens component is arranged on the light emitting surface of the light emitting device with the light intensity being stronger than that of other light emitting devices in the bending area of the display surface, so that the light emitted by the light emitting device with the stronger light emitting intensity is attenuated, the light intensity of the light emitting device with the stronger light emitting intensity is reduced to achieve the effect of light balance of each light emitting device, the phenomenon of green or red light emitting in the bending area in the prior art is relieved, the whole display picture is uniform, and the display quality is improved.
Therefore, in the above OLED display panel, in the prism assembly is disposed on the light-emitting surface side of the light-emitting device with abnormally strong light-emitting in the bending region of the display surface, the light emitted by the light-emitting device is attenuated after passing through the convex lens and entering the optical fiber lens at a certain angle, so that the light-emitting intensity of the light-emitting device with strong light-emitting is reduced, the light-emitting intensity of each light-emitting device in the bending region is balanced, the phenomenon of bluing or reddening in the bending region in the prior art is effectively alleviated, the whole display image is uniform, and the display quality is improved.
There are many options for the arrangement of the lens assembly and the light emitting device in the bending area, such as:
the first method is as follows:
one lens component is arranged opposite to one light-emitting device in the bending area, namely one lens component corresponds to one sub-pixel, so that the lens component can be arranged only on the light-emitting side of the light-emitting device with abnormally strong light emission to achieve the effect of light-emitting attenuation, and the light-emitting device with abnormally strong light emission is subjected to independent light-emitting attenuation, so that the light-emitting intensity of the light-emitting device is balanced with that of other light-emitting devices, the light-emitting intensity of other light-emitting devices is not influenced, the whole display in the bending area is uniform, and the display brightness of the bending area is kept consistent with that of the flat area; or, a lens assembly may be disposed on the light emitting side of each light emitting device in the bending region, and the attenuation rate of the lens assembly corresponding to the light emitting device with abnormally strong light intensity to light is set to be greater than that of the lens assemblies corresponding to other light emitting devices with normal light intensity to light, and the light intensity of each light emitting device in the bending region may also be balanced, so that the bending region is uniformly displayed.
Specifically, the light emitting devices correspond to the sub-pixels one to one, and the lens assemblies correspond to the light emitting devices, naturally, the lens assemblies correspond to the sub-pixels, wherein the length of the optical fiber lenses corresponding to the sub-pixels with the same color is the same, which is beneficial to ensuring that the display brightness of the sub-pixels with the same color is uniform.
The second method comprises the following steps:
the lens assembly may be disposed in units of pixel units, wherein one lens assembly is disposed opposite to the light emitting device corresponding to one pixel unit of the bending region, and the pixel unit includes red, green, and blue sub-pixels. Because the emergent angles of the light with different wavelengths after passing through the convex lens are different, the incident angles of the light entering the optical fiber lens are different, the incident angles of the incident light entering the optical fiber lens are different, the attenuation rates of the incident light entering the optical fiber lens are different, and the attenuation rates of the optical fiber lens on the light with different wavelengths are also different, so that one lens assembly can attenuate the light with different colors in one pixel unit to different degrees, the light emitted by each light-emitting device in one pixel unit is balanced, and the display of a bending area is uniform.
It should be noted that one lens assembly may also be disposed opposite to the light emitting devices corresponding to the two pixel units in the bending area, or one lens assembly may be disposed opposite to the light emitting devices corresponding to the multiple pixel units in the bending area, which is not limited in this embodiment.
Specifically, in the above-mentioned OLED display panel, the loss of the fiber lens to light is an influence factor, in addition to the characteristic of the fiber lens itself and the wavelength of light, the incident angle of the incident light is also an influence factor, the incident angle of the incident light is related to the curvature of the convex curved surface of the convex lens, the curvature of the convex curved surface of the convex lens is inversely proportional to the attenuation rate of the lens assembly to the light intensity of the light, and the curvature of the convex curved surface of the convex lens is a factor that affects the attenuation rate of the lens assembly to the light intensity of the light, wherein, as shown in fig. 5, the same incident power density is 5W/(cm) each2S), red light and blue light with wavelengths of 620nm and 460nm respectively are emitted into the lens assembly at the same angle and incidence point, and 10 groups of continuously-changed data are taken for the curvature of the convex curved surface of the convex lens 41, so as to obtain different loss values, as shown in the following table 1:
TABLE 1
As can be easily known from the data in table 1 above, the smaller the curvature of the convex curved surface of the convex lens is, the larger the attenuation rate of the lens assembly to the light intensity of the light is, that is, the inverse relationship between the curvature of the convex curved surface of the convex lens and the attenuation rate of the lens assembly to the light intensity of the light is, the curvature of the convex curved surface of the convex lens can be set to enable the lens assembly to obtain different attenuation rates so as to adapt to the bending area of the OLED display panel, and the more precise attenuation of the light intensity of the light emitting device with abnormal strong intensity in the bending area is performed so as to enable the bending area to display more uniformly.
Specifically, for the light attenuation rate of the lens assembly, the length of the optical fiber lens is also a factor that affects the attenuation rate of the lens assembly to the light intensity of the light, and the length of the optical fiber lens is in direct proportion to the attenuation rate of the lens assembly to the light intensity of the light, different optical fiber lenses can be set to correspond to different light emitting devices, so that the light intensity of each light emitting device is attenuated differently, the effect of uniform display of the bending area is achieved, and the setting is more convenient.
Specifically, for the specific arrangement between the convex lens and the fiber lens in each lens assembly, wherein, as shown in fig. 2, in each lens assembly 4, the convex lens 41 and the fiber lens 42 may be arranged in contact with each other, that is, there is no space between the convex lens and the fiber lens, due to the refraction and dispersion effect, the curvature of the convex curved surface of the convex lens is not set too large, if it is too large, the exit direction of part of light may be very biased, the part of light that is dispersed is uncontrollable, the display brightness that is too much dispersed may be too low, there is no space between the convex lens and the fiber lens, the thickness of the film layer where the lens assembly is located may be reduced, further the overall thickness of the OLED display panel may be reduced, and there is no space between the convex lens and the fiber lens, so that the light emitted from the convex lens enters the fiber lens as much as possible, the dispersed light is reduced, which is beneficial to improve the overall display brightness of, the convex lens 41 is directly contacted with the fiber lens 42, and the surface of the fiber lens 42 facing the convex lens 41 is formed on a concave curved surface matched with the convex curved surface of the convex lens; or,
as shown in fig. 4, in each lens assembly 4, a space is provided between the convex lens 41 and the fiber lens 42, and a certain space is provided between the convex lens and the fiber lens, which is beneficial to adjusting and controlling the light path, so that the dissipated light can enter the fiber lens again.
Specifically, in each of the above lens assemblies, an orthographic projection of the fiber lens on a plane perpendicular to the central axis of the convex lens is smaller than or equal to an orthographic projection of the convex lens on a plane perpendicular to the central axis of the convex lens, that is, a diameter of the fiber lens is smaller than or equal to a diameter of the convex lens, wherein the diameter of the fiber lens is set to be greater than or equal to 15 μm.
In addition, in each lens component, the central axis of the convex lens is superposed with the central axis of the optical fiber lens, so that more emergent light of the convex lens can be incident into the optical fiber lens, and can be incident into the optical fiber glass at a better incidence angle, and the lens component is convenient to have a proper attenuation rate and accurately attenuate the emergent light of the light-emitting device.
Specifically, in the lens assembly, the convex lens is made of high-purity quartz glass; the fiber lens comprises a core body and a cladding layer wrapped on the outer peripheral side of the core body, wherein the core body is made of germanium-silicon glass, and the cladding layer is made of borosilicate material.
Specifically, as shown in fig. 1, the OLED display panel further includes a substrate base plate 1, an organic light emitting layer 2 is disposed on the substrate base plate 1, the organic light emitting layer includes a plurality of light emitting devices disposed on the substrate base plate 1, an encapsulation layer 3 is disposed on one side of the light emitting devices departing from the substrate base plate 1, and a prism assembly 4 is disposed on one side of the encapsulation layer 3 departing from the light emitting devices.
An embodiment of the present invention further provides a display device, including any one of the OLED display panels provided in the above embodiments.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. An OLED display panel, a display area of a display surface of the OLED display panel comprising a flat area and a curved area, the OLED display panel comprising:
the light emitting devices are arranged in the display area and correspond to the sub-pixels of the display area one by one, a lens assembly is arranged on one side of a light emitting surface of at least part of the light emitting devices in the bending area, the lens assembly comprises a convex lens and an optical fiber lens which are oppositely arranged and have the same axial direction, the optical fiber lens is positioned on one side of the convex lens, which is deviated from the light emitting devices, and the convex curved surface of the convex lens faces the optical fiber lens; the lens component is used for at least attenuating the light emitted by the light emitting device with relatively strong luminous intensity in the light emitting devices in the bending area so as to enable the light emitted by the bending area to be uniform.
2. The OLED display panel of claim 1, wherein one of said lens assemblies is disposed opposite one of said light emitting devices of said curved regions.
3. The OLED display panel of claim 2, wherein the lengths of the fiber lenses corresponding to the same color sub-pixels are the same.
4. The OLED display panel of claim 1, wherein one of the lens assemblies is disposed opposite to the light emitting device corresponding to one of the pixel units of the bending region, and the pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
5. The OLED display panel of claim 1, wherein the curvature of the convex curved surface of the convex lens is inversely proportional to the rate of decay of the light intensity of the light rays by the lens assembly.
6. The OLED display panel of claim 1, wherein the length of the fiber lens is proportional to a rate of decay of the optical intensity of the light rays by the lens assembly.
7. The OLED display panel of claim 1, wherein in each of the lens assemblies, the convex lens is disposed in contact with the fiber lens; or,
in each lens component, a space is arranged between the convex lens and the fiber lens.
8. The OLED display panel of claim 1, wherein in each of the lens assemblies, an orthographic projection of the fiber lens on a plane perpendicular to the central axis of the convex lens is less than or equal to an orthographic projection of the convex lens on a plane perpendicular to the central axis of the convex lens.
9. The OLED display panel of claim 1, wherein the central axis of the convex lens coincides with the central axis of the fiber lens in each of the lens assemblies.
10. The OLED display panel of any one of claims 1-9, further comprising a substrate base plate, wherein the plurality of light emitting devices are disposed on the substrate base plate, wherein an encapsulation layer is disposed on a side of the light emitting devices facing away from the substrate base plate, and wherein the prism assembly is disposed on a side of the encapsulation layer facing away from the light emitting devices.
11. A display device comprising the OLED display panel according to any one of claims 1 to 10.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111564568A (en) * | 2020-05-18 | 2020-08-21 | 京东方科技集团股份有限公司 | Display panel and display device |
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| CN110045539A (en) * | 2019-04-23 | 2019-07-23 | 京东方科技集团股份有限公司 | The manufacturing method and display device of display panel, display panel |
| CN209785979U (en) * | 2019-05-10 | 2019-12-13 | 江苏集萃有机光电技术研究所有限公司 | OLED display device and electronic equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564568A (en) * | 2020-05-18 | 2020-08-21 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111564568B (en) * | 2020-05-18 | 2023-06-06 | 京东方科技集团股份有限公司 | Display panel and display device |
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