CN114038883B - Display panel and display device - Google Patents
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- 230000005540 biological transmission Effects 0.000 claims abstract description 81
- 238000005538 encapsulation Methods 0.000 claims description 30
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 10
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 10
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 10
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 10
- -1 polydimethylsiloxane Polymers 0.000 claims description 10
- 238000002310 reflectometry Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
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Abstract
The application relates to a display panel and a display device, wherein the display panel comprises a light-emitting layer, a first light transmission layer and a second light transmission layer, the first light transmission layer and the second light transmission layer are respectively arranged on two opposite sides of the light-emitting layer, the first light transmission layer is configured to polarize part of light rays emitted by the light-emitting layer out of the first light transmission layer and reflect the other part of the light rays emitted by the light-emitting layer to the second light transmission layer, and the second light transmission layer is configured to polarize the light rays reflected by the first light transmission layer out of the second light transmission layer.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The transparent display panel is a transparent panel capable of displaying image information, and when the transparent display panel works, the corresponding image information can be displayed, and meanwhile, objects at the rear can be observed through the transparent display panel. Currently, for a transparent display panel with two-sided same-image display, the front-view image brightness is higher, the back-view image is usually an interface reflection image, the brightness is lower, and the front-view image and the back-view image interfere with each other, so that the image is unclear.
Disclosure of Invention
Accordingly, it is necessary to provide a display panel and a display device for solving the problem that the front view image and the back view image interfere with each other to cause unclear images in the conventional transparent display panel with double-sided same-image display.
A display panel, comprising: a light emitting layer; and a first light transmission layer and a second light transmission layer respectively arranged on two opposite sides of the light emitting layer, wherein the first light transmission layer is configured to polarize part of light emitted by the light emitting layer out of the first light transmission layer and reflect the other part of light emitted by the light emitting layer to the second light transmission layer, and the second light transmission layer is configured to polarize the light reflected by the first light transmission layer out of the second light transmission layer.
In an embodiment of the present application, the first light transmission layer includes a first reflective polarizing layer and a first quarter wave plate, and the first quarter wave plate is located between the first reflective polarizing layer and the light emitting layer; the second light transmission layer comprises a second reflective polarizing layer and a second quarter wave plate, and the second quarter wave plate is positioned between the second reflective polarizing layer and the light emitting layer; the transmission axis of the first quarter wave plate is parallel to the transmission axis of the first reflective polarizing layer, the transmission axis of the second reflective polarizing layer is parallel to the reflection axis of the first reflective polarizing layer, and the transmission axis of the second quarter wave plate is parallel to the transmission axis of the second reflective polarizing layer.
In an embodiment of the application, the reflectivity of the first reflective polarizing layer is 45% to 55%.
In an embodiment of the application, the reflectivity of the first reflective polarizing layer is 50%.
In an embodiment of the application, a side of the light emitting layer facing the first light transmission layer is provided with a first encapsulation layer.
In an embodiment of the application, a second packaging layer is disposed on a side of the light emitting layer facing the second light transmission layer.
In one embodiment of the present application, the first encapsulation layer includes polydimethylsiloxane; and/or the second encapsulation layer comprises polydimethylsiloxane.
In an embodiment of the present application, the first encapsulation layer includes an ethylene-vinyl acetate copolymer; and/or the second encapsulation layer comprises an ethylene-vinyl acetate copolymer.
In an embodiment of the present application, the light emitting layer includes a surface light source, the front projection of the first light transmitting layer on the light emitting layer covers the front projection of the surface light source on the light emitting layer, and the front projection of the second light transmitting layer on the light emitting layer covers the front projection of the surface light source on the light emitting layer.
A display device includes a display panel as described above.
According to the display panel, the first light transmission layer and the second light transmission layer are respectively arranged on the two opposite sides of the light-emitting layer, one part of light rays emitted by the light-emitting layer are polarized out of the first light transmission layer by the first light transmission layer, so that front-view image display is realized, the other part of light rays emitted by the light-emitting layer are reflected to the second light transmission layer by the first light transmission layer, the second light transmission layer is utilized to polarize the part of light rays reflected by the first light transmission layer out of the second light transmission layer, back-view image display is realized, the mutual interference of images on the front-view side and the back-view side is avoided, and the images are clear, so that the problems of the existing transparent display panel with double-sided same-image display that the front-view images and the back-view images are mutually interfered and the images are unclear are solved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings.
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the application;
FIG. 2 is a schematic diagram of the light path of the display panel of FIG. 1;
fig. 3 is a schematic structural diagram of another embodiment of a display panel according to the present application.
Reference numerals illustrate:
10: front view side 300: a second light transmission layer
20: back side 310: second reflective polarizing layer
100: light emitting layer 320: second quarter wave plate
200: first light transmission layer 400: first encapsulation layer
210: first reflective polarizing layer 500: second packaging layer
220: first quarter wave plate
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The transparent display panel is a transparent panel capable of displaying image information, and when the transparent display panel works, the corresponding image information can be displayed, and meanwhile, objects at the rear can be observed through the transparent display panel. In the application scenes of intelligent mass transit, bus stop boards, outdoor showcases and showcases of department stores, transparent display panels with two sides displaying the same images are applied. However, in the conventional transparent display panel with two-sided same-image display, there is a common problem that the front-view image has high brightness, the back-view image is usually an interface reflection image, the brightness is low, and the front-view image and the back-view image interfere with each other, so that the image is unclear.
The present application provides a method for testing the existing sample, wherein in the display process of a transparent display panel sample, the front-view side luminance value is 2360nit (brightness unit, nit), the back-view side luminance value is 851nit, that is, the difference between the front-view side luminance value and the back-view side luminance value is about 4 times, and the back-view side display effect is poor.
Further analysis of this reveals that the reasons for the lower back-side luminance include: the back-view side image is mostly an interface reflection image. In the transparent display panel, the refractive index of each layer structure is different to some extent, and stray light is formed, thereby adversely affecting the display effect of the transparent display panel. Specifically, the cover plate, the metal wiring, the packaging layer and other structures in the display panel have different degrees of reflection. Taking luminance test analysis of the back side as an example, the stray light ratio caused by the cover plate is about 96%, the stray light ratio caused by the metal wiring is 0.4%, the stray light ratio caused by the packaging layer is about 3%, and the structures cause stray light of different degrees, so that the luminance of the back side is low, and the display image quality of the back side is poor.
In order to solve the above problems, the present application provides a display panel, in which light transmission layers are disposed on two sides of a light emitting layer, a portion of light emitted from the light emitting layer is transmitted by using one of the light transmission layers, another portion of the light is reflected, the transmitted portion of the light forms a front view image on a front view side, the reflected portion of the light is transmitted after being incident on the light transmission layer on the other side, and a back view image is formed on a back view side, so that both an image displayed on the front view side and an image displayed on the back view side have good effects.
The display panel disclosed by the embodiment of the application can be used for scenes such as intelligent mass transit, bus stop boards, outdoor showcases, showcases of department stores and the like.
For a better understanding of the present application, some of the following will be described before expanding in detail:
a Quarter-wave Plate (QWP): the quarter wave plate is also called a "quarter wave plate". When light of a certain wavelength passes through at normal incidence, the phase difference between the emergent ordinary light and the abnormal light is 1/4 wavelength. In the light path, a quarter wave plate is often used to change linearly polarized light into circularly polarized light or elliptically polarized light; or to change circularly or elliptically polarized light into linearly polarized light. Such waveplates are typically cut from birefringent material in a direction parallel to the optical axis to form parallel planar plates whose thickness is precisely an odd multiple of the product of the difference in refractive indices of the two principal axes of the birefringent material and 1/4 of the given wavelength. A wave plate made of an optically active material that rotates the plane of polarization of incident light by an odd multiple of x/2 is also called a quarter wave plate.
Luminance: i.e., luminance (luminence), in candelas per square meter (cd/square meter). The brightness of a light source or an illuminated surface refers to the intensity of light per unit surface in a certain direction, and can be said to be the brightness of the light source or the illuminated surface perceived by the human eye.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a display panel according to the present application, and fig. 2 is a schematic optical path diagram of the display panel in fig. 1. The display panel provided in an embodiment of the application includes a light emitting layer 100, a first light transmitting layer 200 and a second light transmitting layer 300, where the first light transmitting layer 200 and the second light transmitting layer 300 are respectively disposed on opposite sides of the light emitting layer 100, and the first light transmitting layer 200 is configured to polarize a portion of light emitted by the light emitting layer 100 out of the first light transmitting layer 200, so as to implement image display on the front viewing side 10. And, the first light transmission layer 200 is further configured to reflect another portion of the light emitted from the light emitting layer 100 to the second light transmission layer 300, and the second light transmission layer 300 is configured to polarize the portion of the light reflected from the first light transmission layer 200 outside the second transmission layer.
In the display panel, the first light transmission layer 200 and the second light transmission layer 300 are respectively disposed on opposite sides of the light emitting layer 100, a part of the light emitted by the light emitting layer 100 is polarized out of the first light transmission layer 200 by using the first light transmission layer 200, so as to realize the image display of the front view side 10, another part of the light emitted by the light emitting layer 100 is reflected to the second light transmission layer 300 by using the first light transmission layer 200, and then the part of the light reflected by the first light transmission layer 200 is polarized out of the second light transmission layer 300 by using the second light transmission layer 300, so as to realize the image display of the back view side 20, thereby avoiding the mutual interference of the images of the front view side 10 and the back view side and making the images clear, and solving the problems of the current transparent display panel with the same images on both sides that the front view image and the back view image are mutually interfered, resulting in the unclear images.
In some embodiments, the first light transmission layer 200 includes a first reflective polarizing layer 210 and a first quarter wave plate 220, the first quarter wave plate 220 is located between the first reflective polarizing layer 210 and the light emitting layer 100, the second light transmission layer 300 includes a second reflective polarizing layer 310 and a second quarter wave plate 320, and the second quarter wave plate 320 is located between the second reflective polarizing layer 310 and the light emitting layer 100; the transmission axis of the first quarter wave plate 220 is parallel to the transmission axis of the first reflective polarizing layer 210, the transmission axis of the second reflective polarizing layer 310 is parallel to the reflection axis of the first reflective polarizing layer 210, and the transmission axis of the second quarter wave plate 320 is parallel to the transmission axis of the second reflective polarizing layer 310. The light emitted from the light emitting layer 100 is incident on the first reflective polarizing layer 210 after passing through the first quarter wave plate 220, the first reflective polarizing layer 210 transmits a part of the linearly polarized light and reflects another part of the linearly polarized light, the part of the linearly polarized light transmitted by the first reflective polarizing layer 210 forms an image on the front viewing side 10 of the display panel, and the part of the linearly polarized light reflected by the first reflective polarizing layer 210 is changed into left-handed or right-handed circularly polarized light through the first quarter wave plate 220 and then is changed into linearly polarized light through the second quarter wave plate 320, and the part of the linearly polarized light is transmitted through the second reflective polarizing layer 310 to form an image on the back viewing side 20.
In addition, in the above embodiment, due to the arrangement of the first reflective polarizing layer 210, the light emitted by the light emitting layer 100 is reflected between the light emitting layer 100 and the first reflective polarizing layer 210 for multiple times, and the rest of stray light is reflected in this process, and the required linear polarization light can pass through the first reflective polarizing layer 210, so as to achieve the purification of light, improve the brightness of the image display of the front view side 10, and achieve the brightness enhancement effect. Similarly, the light on the back side 20 is purified by the second reflective polarizing layer 310, the stray light is reflected, and the linearly polarized light of the image to be displayed is transmitted, so that the image with higher brightness is displayed on the back side 20, and the problem that the image is unclear due to mutual interference of the front view image and the back view image of the transparent display panel with the same image display on the two sides at present is solved.
Specifically, in some embodiments, the first reflective polarizing layer 210 and the second reflective polarizing layer 310 include multilayer film reflective polarizers (APFs, advanced Polarizer Film).
In some embodiments, the reflectivity of the first reflective polarizing layer 210 is 45% to 55%. It can be understood that under ideal conditions, when the reflectivity of the first reflective polarizing layer 210 is 45%, 55% of the light emitted from the light emitting layer 100 is transmitted to the front side 10 of the display panel, and 45% of the light emitted from the light emitting layer 100 is reflected to the back side 20 of the display panel, i.e. the ratio of the luminance value of the image displayed on the front side 10 to the luminance value of the image displayed on the back side 20 is 55:45, which are relatively close, so that the effect of displaying the image on the front side 10 and the back side 20 is close. When the reflectivity of the first reflective polarizing layer 210 is 55%, 45% of the light emitted by the light emitting layer 100 is transmitted to the front side 10 of the display panel, and 55% of the light emitted by the light emitting layer 100 is reflected to the back side 20 of the display panel, that is, the ratio of the luminance value of the image displayed on the front side 10 to the luminance value of the image displayed on the back side 20 is 45:55, which are relatively close, so that the effect of displaying the image on the front side 10 and the back side 20 is close. Therefore, the reflectivity of the first reflective polarizing layer 210 is set to be 45% to 55% in the above embodiment, so as to ensure that the display effects of the front side 10 and the back side 20 are close, and further solve the problem of unclear images caused by mutual interference of the front view image and the back view image in the conventional transparent display panel with the same double-sided image display.
Further, the reflectivity of the first reflective polarizing layer 210 is 50%, half of the light emitted from the light emitting layer 100 is transmitted to the front side 10 of the display panel, and the other half is reflected to the back side 20 of the display panel, i.e. the ratio of the luminance value of the image displayed on the front side 10 to the luminance value of the image displayed on the back side 20 is 50:50, which are equal, so that the effect of displaying the image on the front side 10 and the image on the back side 20 is the same, thereby obtaining a better display effect, and further solving the problem that the front image and the back image interfere with each other to cause unclear image in the current transparent display panel with the same image on both sides.
In other embodiments, the reflectivity of the first reflective polarizing layer 210 may be set to 46%, 47%, 48%, 49%, 51%, 52%, 53%, 54%, and a portion of the light emitted from the light emitting layer 100 is transmitted to the front side 10 of the display panel, and another portion of the light is reflected to the back side 20 of the display panel, so that the luminance value of the image displayed on the front side 10 is close to the luminance value of the image displayed on the back side 20, thereby obtaining a better display effect, and further solving the problem that the front image and the back image interfere with each other in the current transparent display panel with the same double-sided image display, resulting in unclear image.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of a display panel according to the present application. In some embodiments, a side of the light emitting layer 100 facing the first light transmitting layer 200 is provided with a first encapsulation layer 400. By arranging the first encapsulation layer 400 on one side of the light-emitting layer 100 facing the first light transmission layer 200, the gap of the light-emitting layer 100 is filled, so that the surface of the light-emitting layer 100 is flattened, the light transmission effect is improved, the impurity scattering is reduced, and the display effect of the display panel is improved.
In one embodiment, the first encapsulation layer 400 includes polydimethylsiloxane. The polydimethylsiloxane has good chemical stability so that the first encapsulation layer 400 can protect the light emitting layer 100.
In another embodiment, the first encapsulation layer 400 includes an ethylene-vinyl acetate copolymer, which has good flexibility, impact strength, low temperature resistance, environmental stress resistance, optical performance, chemical stability, aging resistance, and ozone resistance, and can protect the light emitting layer 100 by using the ethylene-vinyl acetate copolymer as a constituent material of the first encapsulation layer 400.
Further, in some embodiments, a side of the light emitting layer 100 facing the second light transmitting layer 300 is provided with a second encapsulation layer 500. By arranging the first encapsulation layer 400 at one side of the light emitting layer 100 facing the second light transmission layer 300, the gap of the light emitting layer 100 is filled, so that the surface of the light emitting layer 100 is flattened, the light transmission effect is improved, the impurity scattering is reduced, and the display effect of the display panel is improved.
In one embodiment, the second encapsulation layer 500 includes polydimethylsiloxane. The polydimethylsiloxane has good chemical stability so that the second encapsulation layer 500 can protect the light emitting layer 100.
In one embodiment, the first encapsulation layer 400 includes polydimethylsiloxane and the second encapsulation layer 500 includes polydimethylsiloxane. By providing the first and second encapsulation layers 400 and 500 at the same time, both sides of the light emitting layer 100 are protected.
In one embodiment, the second encapsulation layer 500 includes an ethylene-vinyl acetate copolymer, which has good flexibility, impact strength, low temperature resistance, environmental stress resistance, optical performance, chemical stability, aging resistance, and ozone resistance, and the ethylene-vinyl acetate copolymer is used as a constituent material of the second encapsulation layer 500, so that the light-emitting layer 100 can be well protected.
In one embodiment, the first encapsulation layer 400 includes an ethylene-vinyl acetate copolymer and the second encapsulation layer 500 includes an ethylene-vinyl acetate copolymer. By providing the first and second encapsulation layers 400 and 500 at the same time, both sides of the light emitting layer 100 are protected.
In some embodiments, the light emitting layer 100 includes a surface light source, the front projection of the light emitting layer 100 by the first light transmitting layer 200 covers the front projection of the light source by the light emitting layer 100, and the front projection of the light emitting layer 100 by the second light transmitting layer 300 covers the front projection of the light source by the light emitting layer 100, so that the light emitted by the light emitting layer 100 can be better transmitted by the first light transmitting layer 200 and the second light transmitting layer 300, the effective utilization rate of the light emitted by the light emitting layer 100 is improved, the power consumption of the light emitting layer 100 is reduced, and the service life of the light emitting layer is prolonged. The surface light source is a light emitting mode, and is relative to a point light source and a common lamp light source. The surface light source has the characteristics of soft light emission, no eye injury, electricity saving, natural light and the like.
In the above embodiment, the light emitting layer 100 includes the LED light emitting unit, and the LED light emitting unit has the characteristics of energy saving, environmental protection, good color rendering property, good response speed, and the like, and is applied to the transparent display panel, so that the energy saving and environmental protection can be realized while the display effect is ensured in the application scenarios of intelligent mass transit, bus stop boards, outdoor showcases, and department stores show windows.
Based on the same problems as described above, the present application also provides a display device including the above display panel. Since the display device includes all the technical features of the display panel, the display device has all the technical effects of the above embodiments, and will not be described herein.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (9)
1. A display panel, comprising:
a light emitting layer; and
a first light transmission layer and a second light transmission layer respectively arranged on two opposite sides of the light emitting layer, wherein the first light transmission layer is configured to polarize part of the light emitted by the light emitting layer out of the first light transmission layer and reflect the other part of the light emitted by the light emitting layer to the second light transmission layer, and the second light transmission layer is configured to polarize the light reflected by the first light transmission layer out of the second light transmission layer;
the first light transmission layer comprises a first reflective polarizing layer and a first quarter wave plate, and the first quarter wave plate is positioned between the first reflective polarizing layer and the light emitting layer;
the second light transmission layer comprises a second reflective polarizing layer and a second quarter wave plate, and the second quarter wave plate is positioned between the second reflective polarizing layer and the light emitting layer;
the transmission axis of the first quarter wave plate is parallel to the transmission axis of the first reflective polarizing layer, the transmission axis of the second reflective polarizing layer is parallel to the reflection axis of the first reflective polarizing layer, and the transmission axis of the second quarter wave plate is parallel to the transmission axis of the second reflective polarizing layer.
2. The display panel of claim 1, wherein the first reflective polarizing layer has a reflectivity of 45% to 55%.
3. The display panel of claim 2, wherein the first reflective polarizer layer has a reflectivity of 50%.
4. A display panel according to any one of claims 1 to 3, wherein a side of the light emitting layer facing the first light transmitting layer is provided with a first encapsulation layer.
5. The display panel according to claim 4, wherein a side of the light emitting layer facing the second light transmitting layer is provided with a second encapsulation layer.
6. The display panel of claim 5, wherein the first encapsulation layer comprises polydimethylsiloxane; and/or
The second encapsulation layer includes polydimethylsiloxane.
7. The display panel of claim 5, wherein the first encapsulation layer comprises an ethylene-vinyl acetate copolymer; and/or
The second encapsulation layer includes an ethylene-vinyl acetate copolymer.
8. A display panel according to any one of claims 1 to 3, wherein the light emitting layer comprises a surface light source, the front projection of the first light transmitting layer at the light emitting layer covers the front projection of the surface light source at the light emitting layer, and the front projection of the second light transmitting layer at the light emitting layer covers the front projection of the surface light source at the light emitting layer.
9. A display device comprising the display panel according to any one of claims 1 to 8.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1453609A (en) * | 2002-04-26 | 2003-11-05 | 卡西欧计算机株式会社 | Liquid crystal display with two liquid crystal display elements set at two sides of equipment viewed from two sides |
| CN106024848A (en) * | 2016-08-05 | 2016-10-12 | 京东方科技集团股份有限公司 | Double-sided electroluminescent display panel and display device |
| CN109976027A (en) * | 2019-04-30 | 2019-07-05 | 京东方科技集团股份有限公司 | A kind of display panel, display device and its driving method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6295109B1 (en) * | 1997-12-26 | 2001-09-25 | Sharp Kabushiki Kaisha | LCD with plurality of pixels having reflective and transmissive regions |
| EP2397875A3 (en) * | 2001-12-14 | 2012-05-02 | QUALCOMM MEMS Technologies, Inc. | Uniform illumination system |
| US10302846B2 (en) * | 2015-02-02 | 2019-05-28 | Sharp Kabushiki Kaisha | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1453609A (en) * | 2002-04-26 | 2003-11-05 | 卡西欧计算机株式会社 | Liquid crystal display with two liquid crystal display elements set at two sides of equipment viewed from two sides |
| CN106024848A (en) * | 2016-08-05 | 2016-10-12 | 京东方科技集团股份有限公司 | Double-sided electroluminescent display panel and display device |
| CN109976027A (en) * | 2019-04-30 | 2019-07-05 | 京东方科技集团股份有限公司 | A kind of display panel, display device and its driving method |
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