CN113437130A - OLED display device - Google Patents
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- CN113437130A CN113437130A CN202110735423.8A CN202110735423A CN113437130A CN 113437130 A CN113437130 A CN 113437130A CN 202110735423 A CN202110735423 A CN 202110735423A CN 113437130 A CN113437130 A CN 113437130A
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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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
-
- 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
- H10K50/852—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
-
- 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
Abstract
The application provides an OLED display device, relates to the technical field of display, and is used for solving the technical problems that the OLED display device is thick and does not conform to the ultrathin design trend of the current OLED display device; the display panel and the polaroid are bonded through a first optical adhesive layer, and the first optical adhesive layer comprises a light-transmitting adhesive area and a light-shading adhesive area arranged around the edge of the light-transmitting adhesive area; the cover plate and the polaroid are bonded through the second optical adhesive layer, and the OLED display device provided by the application is used for reducing the thickness.
Description
Technical Field
The application relates to the technical field of display, in particular to an OLED display device.
Background
An Organic Light Emitting Diode (OLED) is widely used in a display panel as a current type Light Emitting device because of its characteristics of self-luminescence, fast response, wide viewing angle, and capability of being manufactured.
In the related art, as shown in fig. 1, the OLED display device includes a display panel 200 and a polarizer 300 attached to the display panel 200 through a first optical adhesive layer 500, a cover plate 400 is disposed on a side of the polarizer 300 away from the display panel 200, the cover plate 400 is attached to the polarizer 300 through a second optical adhesive layer 600, and a circle of ink layer 100 is disposed on an edge of a side of the cover plate 400 facing the polarizer 300 to form a circle of non-display regions and a display region located inside the non-display regions at an edge of the display panel 200.
However, the thickness of the OLED display device is thick, which is not in line with the current trend of ultra-thin design of OLED display devices.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present disclosure provide an OLED display device, so that the thickness of the OLED display device is relatively thin, and the OLED display device conforms to the ultra-thin design trend of the current OLED display device.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
a first aspect of an embodiment of the present application provides an OLED display device, which includes a display panel, a polarizer, and a cover plate, which are sequentially stacked; the display panel and the polaroid are bonded through a first optical adhesive layer, and the first optical adhesive layer comprises a light-transmitting adhesive area and a light-shading adhesive area arranged around the edge of the light-transmitting adhesive area; the cover plate and the polaroid are bonded through a second optical adhesive layer.
In the OLED display device provided in the embodiment of the present application, the display panel and the polarizer are bonded by the first optical adhesive layer, the first optical adhesive layer includes a light transmissive adhesive region and a light blocking adhesive region disposed around an edge of the light transmissive adhesive region, when the display panel is lighted, the light emitted by the display panel can not be emitted to the outer side of the cover plate after being emitted to the shading glue area, and the light emitted by the display panel can be emitted to the outer side of the cover plate after being emitted to the light-transmitting glue area, a non-display area opposite to the light-shielding glue area and a display area opposite to the light-transmitting glue area are formed on the OLED display device, therefore, the first optical adhesive layer with the structure is adopted, so that the second optical adhesive layer does not need to be provided with the ink layer, the thickness of the second optical adhesive layer is thinned, therefore, the whole thickness of the OLED display device is reduced, and the ultrathin design trend of the current OLED display device is met.
In a possible implementation manner, the material of the light-transmitting adhesive area is at least one of PSA (pressure sensitive adhesive), OCA (optical clear adhesive) and BM (BM) adhesive; the material of the light shading adhesive area is at least one of PSA pressure sensitive adhesive, OCA optical adhesive and BM adhesive which are doped with light shading agents.
In one possible implementation, the black material includes at least one of graphite, carbon black, and ink.
In one possible implementation, the thickness of the first optical adhesive layer is 10um ± 3 um.
In one possible implementation, the polarizer is a linear polarizer; and one side of the linear polaroid facing the display panel is provided with a semi-transparent optical coating, and a first optical adhesive layer is arranged on the semi-transparent optical coating.
In one possible implementation, the material of the semi-transparent optical coating is polyimide doped with a light-blocking agent.
In one possible implementation manner, the display panel includes a plurality of pixel units arranged in an array, each pixel unit includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel; the white light sub-pixel is arranged between any adjacent two of the red light sub-pixel, the green light sub-pixel and the blue light sub-pixel.
In one possible implementation, the semi-transparent optical coating has a hollow area, and the hollow area is opposite to the white light sub-pixel.
In one possible implementation, the cover plate includes a transparent polyimide film layer and a hardened coating; transparent polyimide rete and second optical adhesive layer bond, and the setting of sclerosis coating deviates from the surface of polaroid at transparent polyimide rete.
In one possible implementation, a support film is arranged on the side of the display panel facing away from the polarizer; one side of the support film, which is far away from the polaroid, is provided with a buffer layer.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a related art OLED display device;
FIG. 2 is a schematic structural diagram of an OLED display device according to an embodiment of the present application;
fig. 3 is a schematic structural view of a polarizing plate of an embodiment of the present application;
FIG. 4 is a schematic diagram showing the overall structure of a polarizer and a semi-transparent optical coating according to an embodiment of the present application;
FIG. 5 is a schematic view of another angular overall structure of the polarizer and the semi-transparent optical coating of FIG. 4;
FIG. 6 is a schematic diagram of the overall structure of the polarizer, the semi-transparent optical coating and the light-transmissive adhesive region according to the embodiment of the present application;
FIG. 7 is a schematic diagram illustrating an overall structure of a polarizer, a semi-transparent optical coating layer and a first optical adhesive layer according to an embodiment of the present disclosure;
FIG. 8 is a schematic view of another angle of the polarizer, the semi-transparent optical coating, and the first optical adhesive layer of FIG. 7;
fig. 9 is a schematic view illustrating light propagation when ambient light is incident on an OLED display device according to an embodiment of the present application;
fig. 10 is a schematic view illustrating light propagation when the OLED display device provided in the embodiment of the present application self-emits light to the environment.
Description of reference numerals:
100: an ink layer;
200: a display panel;
300: a polarizing plate; 301: a semi-transparent optical coating; 302: a hollow-out area;
400: a cover plate; 401: a transparent polyimide film layer; 402: hardening the coating;
500: a first optical adhesive layer; 501: a light-transmitting glue region; 502: a light-shielding rubber area;
600: a second optical adhesive layer;
700: a pixel unit; 701: a red-light sub-pixel; 702: a green sub-pixel; 703: a blue sub-pixel; 704: a white light sub-pixel;
800: a support film;
900: a buffer layer.
Detailed Description
As background art, the OLED display device in the related art has a problem of thick thickness, and the inventor has found that the problem occurs mainly for two reasons:
in the related art, as shown in fig. 1, the second optical adhesive layer 600 is used to bond the polarizer 300 and the cover 400, wherein the second optical adhesive layer 600 is disposed on the polarizer 300, and the ink layer 100 is disposed on the second optical adhesive layer 600 and is disposed along an edge of the second optical adhesive layer 600. In order to eliminate the step difference between the ink layer 100 and the second optical adhesive layer 600, a portion of the second optical adhesive layer 600 is filled in the cavity enclosed by the ink layer 100, so that the top surface of the ink layer 100 is flush with the top surface of the second optical adhesive layer 600, and the cover plate 400 can be seamlessly attached to the top surface of the ink layer 100 and the top surface of the second optical adhesive layer 600. However, with such a structure, the thickness of the second optical adhesive layer 600 is thick, and the thickness of the second optical adhesive layer 600 can reach about 0.15mm, so that the thickness of the OLED display device is thick.
In the related art, the adopted polarizer 300 is a circular polarizer, the circular polarizer includes a linear polarizer and an 1/4 wave plate, and although the circular polarizer can reduce or even eliminate the influence of ambient light on human vision, the circular polarizer is thick, which also results in a thick OLED display device.
In view of the above technical problem, an embodiment of the present application provides an OLED display device, where the first optical adhesive layer 500 is set as a light-transmitting adhesive region and a light-shielding adhesive region, so that a display region right opposite to the light-transmitting adhesive region and a non-display region right opposite to the light-shielding adhesive region are formed on the OLED display device, the ink layer 100 disposed at the edge of the second optical adhesive layer 600 in the related art is eliminated, the thickness of the second optical adhesive layer 600 adhering to the cover plate 400 and the polarizing plate 300 is reduced, the thickness of the OLED display device is reduced, and the thickness of the OLED display device conforms to the current ultra-thinning design trend.
In addition, the linear polarizer and the semi-transparent optical coating are arranged, so that the overall thickness formed by the linear polarizer and the semi-transparent optical coating is thinner than that of the circular polarizer, and thus, the thickness of the OLED display device is reduced, and the thickness of the OLED display device accords with the current ultra-thinning design trend.
In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all 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 application.
The embodiment of the application provides an OLED display device, and the OLED display device is an electronic display product such as a mobile phone, a tablet computer, a computer display, a vehicle-mounted control display screen and the like.
Referring to fig. 2, the OLED display device according to the embodiment of the present disclosure includes a display panel 200, a polarizer 300, and a cover plate 400, which are sequentially stacked. The display panel 200 and the polarizer 300 are bonded by the first optical adhesive layer 500, and the thickness of the first optical adhesive layer 500 may be 10um ± 3um, specifically, for example, 10um, 10.5um, 9.7um, and the like.
The first optical adhesive layer 500 includes a light-transmissive adhesive region 501 and a light-blocking adhesive region 502 disposed around an edge of the light-transmissive adhesive region 501. The light-transmitting glue region 501 and the light-shielding glue region 502 both have an adhesive function, and both can adhere the display panel 200 and the polarizer 300.
The transparent adhesive area 501 is a transparent area, and when the display panel 200 is lit, light emitted by the display panel 200 can be emitted from the transparent adhesive area 501 and enter human eyes, so that people can see pictures on the OLED display device, and the transparent adhesive area 501 correspondingly forms a display area on the OLED display device. The material of the light-transmissive Adhesive region 501 may be at least one of PSA (pressure sensitive Adhesive), OCA (Optically Clear Adhesive), and BM (BM) Adhesive. The shape of the light-transmitting adhesive region 501 is, for example, rectangular.
The light-shielding adhesive area 502 is a non-transparent area, when the display panel 200 is lit, light emitted from the display panel 200 is not emitted from the light-shielding adhesive area 502, the light-shielding adhesive area 502 is black when viewed by a person, and the light-shielding adhesive area 502 correspondingly forms a non-display area on the OLED display device. The material of the light-shielding adhesive area 502 is at least one of PSA pressure-sensitive adhesive doped with light-blocking agent, OCA optical adhesive doped with light-blocking agent, and BM adhesive doped with light-blocking agent. The light blocking agent includes at least one of graphite, carbon black, and ink. The light blocking adhesive region 502 is annular, for example, rectangular annular.
Referring to fig. 2, the cover plate 400 and the polarizer 300 are bonded by the second optical adhesive layer 600, and the thickness of the second optical adhesive layer 600 may be 10um ± 3um, specifically, for example, 10um, 10.4um, 9.3um, and the like. The material of the second optical adhesive layer 600 may be OCA optical adhesive.
The second optical adhesive layer 600 and the cover plate 400 are transparent layers, and after the display panel 200 is lighted, light emitted by the display panel 200 can be emitted from the second optical adhesive layer 600 and the cover plate 400 and enter human eyes, so that people can see pictures on the OLED display device.
In some possible embodiments, the cover plate 400 includes a transparent polyimide (CPI) film layer 401 and a hard coating layer 402, the thickness of the hard coating layer 402 may be 3-5um, the transparent polyimide film layer 401 is bonded to the second optical glue layer 600, and the hard coating layer 402 is disposed on a surface of the transparent polyimide film layer 401 facing away from the polarizer 300. The thickness of the transparent polyimide film 401 may be, for example, 10um ± 3um, specifically, for example, 10um, 10.2um, 9.8um, and the like.
The utility model provides an OLED display device, glue district 501 through the printing opacity and form OLED display device's display area, glue the non-display area that district 502 formed OLED display device through the shading, and glue first optical cement layer 500 that district 502 formed through printing opacity and shading and glue display panel 200 and polaroid 300 bonding, not only can realize display panel 200 and polaroid 300's bonding, and OLED display device's display area and non-display area have been formed, compare prior art and bond display panel 200 and polaroid 300 through first optical cement layer 500, form OLED display device's non-display area through printing ink, need not to set up a printing ink layer 100 specially, moreover, the steam generator is simple in structure.
The OLED display device of the embodiment of this application, compare correlation technique, need not to set up printing ink layer 100, this make the thickness of second optics glue film 600 satisfy bond apron 400 and polaroid 300 can, need not to consider printing ink layer 100 and the section difference of second optics glue film 600, the thickness attenuation of second optics glue film 600, OLED display device's thickness attenuation, accord with current OLED display device's ultra-thin design trend, and when OLED display device is AMOLED display device, can satisfy folding, crooked requirement, promote the pliability.
Referring to fig. 2, 3, 4 and 5, the polarizer 300 is a linear polarizer, a semi-transparent optical coating 301 is disposed on a side of the linear polarizer facing the display panel 200, and a first optical adhesive layer 500 is disposed on the semi-transparent optical coating 301. The light transmittance of the semi-transparent optical coating 301 can be 50%, for example, and the actual light transmittance of the semi-transparent optical coating 301 can be designed according to actual needs.
Through setting up semi-transparent optical coating 301 on online polaroid 300, can be so that when penetrating semi-transparent optical coating 301, light intensity reduces, so, after OLED display device was shone to ambient light, the intensity of the light that actually shines in people's eye reduces, and when display panel 200 did not light, OLED display device's display area and non-display area were black, so, reduced the influence of ambient light to OLED display device's display effect.
The material of the semi-transparent optical coating 301 is polyimide (abbreviated as PI) doped with a light-blocking agent. A light blocking agent refers to an agent that blocks the transmission of light, and may be, for example, graphite. The semi-transparent optical coating 301 may be disposed on the polarizer 300 by evaporation. The following provides a preparation method for molding the linear polarizer 300, the semi-transparent optical coating 301 and the first optical adhesive layer 500:
providing a linear polarizer 300, as shown in FIG. 3;
polyimide doped with graphite is vapor-deposited on the linear polarizer 300 to form a semi-transparent optical coating 301 on the linear polarizer 300, as shown in fig. 4 and 5;
coating a PSA pressure sensitive adhesive on the side of the linear polarizer 300 where the semi-transparent optical coating 301 is disposed to form a transparent adhesive region 501, the transparent adhesive region 501 being spaced from the edge of the linear polarizer 300, as shown in fig. 6;
on one side of the line polarizer 300 where the semi-transparent optical coating 301 is disposed, a PSA (pressure sensitive adhesive) doped with graphite is coated to form a light-shielding adhesive region 502, the light-shielding adhesive region 502 and the light-transmitting adhesive region 501 are in the same layer, and the light-shielding adhesive region 502 is located outside the light-transmitting adhesive region 501, as shown in fig. 7 and 8.
As shown in fig. 9 and 10, the display panel 200 includes a plurality of pixel units 700 arranged in an array, each pixel unit 700 includes a red sub-pixel 701, a green sub-pixel 702, a blue sub-pixel 703, and a white sub-pixel 704, and the white sub-pixel 704 is disposed between any adjacent two of the red sub-pixel 701, the green sub-pixel 702, and the blue sub-pixel 703.
In the OLED display device according to the embodiment of the application, the semi-transparent optical coating 301 may not only reduce the intensity of ambient light incident on the display panel 200, but also reduce the intensity of light emitted by the display panel 200, which results in that after the display panel 200 is turned on, the luminance of a picture displayed by the OLED display device is low, and the picture displayed by the OLED display device has a poor effect, and by setting the pixel unit 700 to include the red subpixel 701, the green subpixel 702, the blue subpixel 703 and the white subpixel 704, and setting the white subpixel 704 between any adjacent two of the red subpixel 701, the green subpixel 702 and the blue subpixel 703, the luminance of light emitted by the display panel 200 and emitted to the environment may be increased, so that the display effect of the OLED display panel 200 is better.
Referring to fig. 9 and 10, the semi-transparent optical coating 301 has a hollow area 302, and the hollow area 302 is disposed opposite to the white sub-pixel 704. The hollow-out area 302 opposite to the white light sub-pixel 704 is arranged on the semi-transparent optical coating 301, so that after the display panel 200 is lightened, the brightness of a picture displayed by the OLED display device is high, and the picture displayed by the OLED display device is good in effect.
Referring to fig. 9, the semi-transparent optical coating 301 has a hollow area 302, which defines the light from left to right as light 1, light 2, light 3, and light 4, wherein light 2 is the reflected light of light 1, when the light 1 penetrates the semi-transparent optical coating 301, the light intensity of the light 1 is reduced, the light 1 irradiates the display panel 200, after the light 2 is reflected, when the light 2 penetrates the semi-transparent optical coating 301, the light intensity of the light 2 is also reduced, for example, the optical semi-transparent coating 301 has a light transmittance of 50%, when the light 1 penetrates through the optical semi-transparent coating 301, the light intensity of the light ray 1 is reduced by 50%, and when the reflected light of the light ray 1, i.e. the light ray 2, penetrates through the semi-transparent optical coating 301, the light intensity of the light ray 2 is reduced by 50% again, thus, after the light 1 and the light 2 penetrate through the semi-transparent optical coating 301, the intensity of the light is reduced, and the influence of the ambient light on the display effect of the OLED display device can be reduced.
As shown in fig. 9, the light 4 is defined as the reflected light of the light 3, the light 3 irradiates the display panel 200 from the hollow area 302, after the light 4 is reflected, when the light 4 penetrates through the semi-transparent optical coating 301, the light intensity of the light 4 is reduced, for example, the light transmittance of the semi-transparent optical coating 301 is 50%, the light 3 irradiates the display panel 200 from the hollow area 302, the light intensity of the light 3 is not reduced, the reflected light of the light 3, that is, the light 4, when the light 4 penetrates through the semi-transparent optical coating 301, the light intensity of the light 4 is reduced by 50%, so that, after the light 4 penetrates through the semi-transparent optical coating 301, the light intensity is also reduced, and the influence of the ambient light on the display effect of the OLED display device can also be reduced.
In summary, when the ambient light irradiates the display panel 200, the ambient light penetrates through the semi-transparent optical coating 301, so that the light intensity of the ambient light can be reduced, and the light intensity reflected by the ambient light to human eyes is reduced, so that when the display panel 200 is not lit, a screen seen by people is basically a black screen, that is, the influence of the ambient light on the display effect of the OLED display device is reduced.
Referring to fig. 10, the semi-transparent optical coating 301 has a hollow area 302, which defines light rays from left to right as light ray 5, light ray 6, light ray 7, and light ray 8, where the light rays 5 and 6 are red light emitted from the red light sub-pixel 701, the light rays 7 and 8 are white light emitted from the white light sub-pixel 704, and when the light rays 5 and 6 penetrate through the semi-transparent optical coating 301, the light intensities of the light rays 5 and 6 are reduced, for example, the light transmittance of the semi-transparent optical coating 301 is 50%, and when the light rays 5 and 6 penetrate through the semi-transparent optical coating 301, the light intensities of the light rays 5 and 6 are reduced by 50%; and the light 7 and the light 8 are emitted through the hollow-out area 302, the light intensity of the light 7 and the light 8 is not reduced, so that the display effect of the OLED display device is good.
Referring to fig. 2, a support film 800 (BPF) is disposed on a side of the display panel 200 away from the polarizer 300, and a buffer layer 900 is disposed on a side of the support film 800 away from the polarizer 300. The support film 800 is used to support the display panel 200, the polarizer 300 and the cover plate 400 disposed on the display panel 200, the buffer layer 900 may be a foam waterproof double-sided tape, and the buffer layer 900 plays a role in buffering.
In the OLED display device according to the embodiment of the application, the first optical adhesive layer 500 is arranged to include the light-transmitting adhesive region 501 and the light-shielding adhesive region 502, so that a display region and a non-display region of the OLED display device are formed, and the thickness of the second optical adhesive layer 600 is further reduced; the display effect of the OLED display device is basically the same as that of the OLED display device using circularly polarized light due to the linear polarizer, the semi-transparent optical coating 301, the white light sub-pixel 704 and the hollow area 302 arranged on the semi-transparent optical coating 301, and the thickness of the linear polarizer and the semi-transparent optical coating 301 is thinner than that of the circular polarizer; therefore, the thickness of the OLED display device in the embodiment of the application is reduced, and the trend of ultrathin design of the OLED display device is met.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
In general, terms should be understood at least in part by their use in context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending, at least in part, on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular use or to convey a plural use, depending at least in part on the context.
It should be readily understood that "on … …", "above … …" and "above … …" in this disclosure should be interpreted in its broadest sense such that "on … …" means not only "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above … …" or "above … …" includes not only the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).
Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.
The term "substrate" as used herein refers to a material on which a subsequent layer of material is added. The substrate itself may be patterned. The material added atop the substrate may be patterned or may remain unpatterned. In addition, the substrate may comprise a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, and the like. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.).
The term "layer" as used herein may refer to a portion of material that includes a region having a thickness. A layer may extend over the entire underlying or overlying structure or may have a smaller extent than the underlying or overlying structure. Furthermore, a layer may be a region of a continuous structure, homogeneous or heterogeneous, having a thickness less than the thickness of the continuous structure. For example, a layer may be located between the top and bottom surfaces of a continuous structure or between any pair of lateral planes at the top and bottom surfaces. The layers may extend laterally, vertically, and/or along a tapered surface. The substrate may be a layer, may include one or more layers therein, and/or may have one or more layers located thereon, above and/or below. The layer may comprise a plurality of layers. For example, the interconnect layer may include one or more conductors and contact layers (within which contacts, interconnect lines, and/or vias are formed) and one or more dielectric layers.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The OLED display device is characterized by comprising a display panel, a polaroid and a cover plate which are sequentially stacked; wherein the content of the first and second substances,
the display panel and the polaroid are bonded through a first optical adhesive layer, and the first optical adhesive layer comprises a light-transmitting adhesive area and a light-shielding adhesive area arranged around the edge of the light-transmitting adhesive area;
the cover plate and the polaroid are bonded through a second optical adhesive layer.
2. The OLED display device according to claim 1, wherein the material of the light-transmitting adhesive region is at least one of PSA pressure sensitive adhesive, OCA optical adhesive and BM adhesive;
the material of the shading adhesive area is at least one of PSA pressure sensitive adhesive, OCA optical adhesive and BM adhesive which are doped with light-blocking agents.
3. The OLED display device of claim 2, wherein the light blocking agent includes at least one of graphite, carbon black, and ink.
4. The OLED display device claimed in claim 1, wherein the first optical glue layer has a thickness of 10um ± 3 um.
5. The OLED display device according to any one of claims 1 to 4, wherein the polarizing plate is a linear polarizing plate;
and one side of the linear polarizer, which faces the display panel, is provided with a semi-transparent optical coating, and the semi-transparent optical coating is provided with the first optical adhesive layer.
6. The OLED display device of claim 5, wherein the material of the semi-transparent optical coating is polyimide doped with a light blocking agent.
7. The OLED display device of claim 5, wherein the display panel comprises a plurality of pixel units arranged in an array, each pixel unit comprising a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel;
the white light sub-pixel is arranged between any adjacent two of the red light sub-pixel, the green light sub-pixel and the blue light sub-pixel.
8. The OLED display device of claim 7, wherein the semi-transparent optical coating has a hollowed-out area disposed directly opposite the white light sub-pixel.
9. The OLED display device of any one of claims 1-4, wherein the cover sheet includes a transparent polyimide film layer and a hardened coating;
the transparent polyimide film layer is bonded with the second optical adhesive layer, and the hardening coating is arranged on the surface, deviating from the polaroid, of the transparent polyimide film layer.
10. The OLED display device according to any one of claims 1 to 4, wherein a side of the display panel facing away from the polarizer is provided with a support film;
and a buffer layer is arranged on one side of the support film, which is far away from the polaroid sheet.
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| CN202110735423.8A CN113437130A (en) | 2021-06-30 | 2021-06-30 | OLED display device |
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| CN202110735423.8A CN113437130A (en) | 2021-06-30 | 2021-06-30 | OLED display device |
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