CN214313212U

CN214313212U - OLED display panel capable of reducing optical crosstalk influence

Info

Publication number: CN214313212U
Application number: CN202120784767.3U
Authority: CN
Inventors: 程家有; 李维维; 赵�卓; 曹君; 张亚东; 杭鑫
Original assignee: Semiconductor Integrated Display Technology Co Ltd
Current assignee: Semiconductor Integrated Display Technology Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-09-28
Anticipated expiration: 2031-04-16

Abstract

The utility model provides a reduce OLED display panel of optical crosstalk influence, belongs to OLED and shows technical field, this OLED display panel, including range upon range of stratum basale, drive circuit layer, sub-pixel layer, encapsulated layer and the various rete that sets up, set up a plurality of sub-pixel layers on the stratum basale, the encapsulated layer is including range upon range of inorganic encapsulated layer I and the organic encapsulated layer that covers on sub-pixel layer surface, is provided with a plurality of isolation layers in the organic encapsulated layer, sets up the isolation layer between two adjacent sub-pixel layers, the beneficial effects of the utility model are that, the utility model discloses overall structure is simple, can reduce the defective rate of rete production, can effectively reflect the light that different sub-pixel layers were crosstalked, has reduced the problem of optical crosstalk, has improved display effect.

Description

OLED display panel capable of reducing optical crosstalk influence

Technical Field

The utility model relates to a OLED shows technical field, especially relates to a reduce OLED display panel that optics is crosstalked and is influenced.

Background

The silicon-based OLED micro display device has the advantages of high resolution, low power consumption, small size, light weight and the like, is widely applied to near-to-eye display industries with high resolution such as AR, VR, wearable equipment, industrial security, medical treatment and the like, gradually becomes an important point of a novel display industry, and has huge market potential.

Organic Light Emitting Display (OLED) is a new generation of Display, and has many advantages of self-luminescence, fast response, wide viewing angle, color saturation, etc. compared with liquid crystal Display. The Micro OLED basically adopts a mode of adding a colored film layer to white light to realize color display, when the structure is used, an encapsulation layer is arranged between a light-emitting layer and the colored film layer at intervals, and particularly when a new thin film encapsulation technology is adopted, a multi-film-layer structure is arranged between the light-emitting layer and the colored film layer at intervals, so that the light-emitting layer and the colored film layer are far away from each other, the film layer is thick, the phenomenon of optical crosstalk is easy to occur, and the problems of color cast, color gamut reduction and the like are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a reduce OLED display panel that optics was crosstalked and is influenced can reduce the defective rate of rete production, can effectively reflect the light that different sub-pixel layers were crosstalked, has reduced the problem that optics was crosstalked, can improve display effect.

In order to achieve the above object, the present invention provides a technical solution for solving the technical problem: the OLED display panel capable of reducing optical crosstalk influence comprises a base layer, a driving circuit layer, a sub-pixel layer, an encapsulation layer and a color film layer which are arranged in a stacked mode, wherein the base layer is provided with a plurality of sub-pixel layers, the encapsulation layer comprises an inorganic encapsulation layer I and an organic encapsulation layer, the inorganic encapsulation layer I and the organic encapsulation layer are covered on the surface of the sub-pixel layer in a stacked mode, a plurality of isolation layers are arranged in the organic encapsulation layer, and the isolation layers are arranged between every two adjacent sub-pixel layers.

The sub-pixel layer comprises an anode layer, an organic light emitting layer and a cathode layer which are sequentially stacked on the driving circuit layer, a pixel defining layer is arranged between every two adjacent anode layers, and the upper end of the pixel defining layer sequentially overlaps and covers the organic light emitting layer and the cathode layer.

The surface of the cathode layer covers the inorganic packaging layer I, the isolation layer is formed at the position, opposite to the pixel defining layer, of the surface of the inorganic packaging layer I in an ink-jet printing mode, the organic packaging layer is formed on the surface of the inorganic packaging layer I in an ink-jet printing mode, and the organic packaging layer is filled and covered on the periphery of the isolation layer.

The cross section of the isolation layer is in the shape of an isosceles trapezoid of which the upper bottom is smaller than the lower bottom.

The thickness of organic packaging layer and isolation layer all sets up to 1000 ~ 4000nm, the thickness of inorganic packaging layer I sets up to 500 ~ 2000 nm.

An inorganic packaging layer II and an organic buffer layer are sequentially stacked between the organic packaging layer and the color film layer.

The thickness of the inorganic packaging layer II is set to be 500-2000 nm, and the thickness of the organic buffer layer is set to be 1000-2000 nm.

The utility model has the advantages that:

1. the utility model discloses an adopt inorganic organic superimposed mode to prepare the encapsulated layer, can effective cladding is because the rete that stress caused peels off or breaks etc. harmfully, and prepare a plurality of isolation layers in organic encapsulated layer, the isolation layer is located between two adjacent sub-pixel layers, can effectively reflect the light that different sub-pixel layers were crosstalked, can control light effectively within certain angle, thereby solved because the too big optics that leads to of distance between luminescent layer and the various rete is crosstalked, it is not good to avoid appearing the visual angle, the problem of look separation, the display effect is improved.

2. The utility model forms the organic packaging layer and the isolation layer on the surface of the inorganic packaging layer I by the way of step-by-step ink-jet printing, so as to form a mixed organic layer structure with stable structure; the inorganic packaging layer II and the organic buffer layer are stacked between the organic packaging layer and the color film layer, the inorganic packaging layer II ensures the packaging performance, the packaging effect is better, and the organic buffer layer plays a role in flattening, so that the subsequent coating performance of the color film layer is better.

To sum up, the utility model has the advantages that the whole structure is simple, can reduce the defective rate of rete production, can effectively reflect the light that different sub-pixel layers were crosstalked, has reduced the problem that optics was crosstalked, has improved the display effect.

Drawings

The contents of the various figures of the specification and the labels in the figures are briefly described as follows:

fig. 1 is a schematic structural view of the present invention;

the labels in the above figures are: 1. the pixel structure comprises a substrate layer, 2 driving circuit layers, 3 sub-pixel layers, 31 anode layers, 32 organic light emitting layers, 33 cathode layers, 34 pixel definition layers, 4 packaging layers, 41 inorganic packaging layers I, 42 organic packaging layers, 43 isolating layers, 5 color film layers, 6 inorganic packaging layers II and 7 organic buffer layers.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses specific embodiment does: as shown in FIG. 1, an OLED display panel for reducing optical crosstalk effect comprises a substrate layer 1, a driving circuit layer 2, a sub-pixel layer 3, an encapsulation layer 4 and a color film layer 5, wherein the substrate layer 1 is provided with a plurality of sub-pixel layers 3, the encapsulation layer 4 comprises an inorganic encapsulation layer I41 and an organic encapsulation layer 42 which are laminated and covered on the surface of the sub-pixel layer 3, the encapsulation layer 4 is prepared by adopting an inorganic-organic lamination mode, so that the defects of film peeling or cracking and the like caused by stress can be effectively covered, the defect rate is reduced, the organic encapsulation layer 42 is internally provided with a plurality of isolation layers 43, the isolation layers 43 are arranged between two adjacent sub-pixel layers 3, the light of crosstalk of different sub-pixel layers 3 can be effectively reflected, the light can be effectively controlled within a certain angle, and the optical crosstalk caused by the overlarge distance between the sub-pixel layers 3 and the color film layer 5 is solved, the problems of poor visual angle and color separation are avoided, and the display effect is improved.

Specifically, the sub-pixel layer 3 includes an anode layer 31, an organic light emitting layer 32, and a cathode layer 33 sequentially stacked on the driving circuit layer 2, a pixel defining layer 34 is disposed between two adjacent anode layers 31, an upper end of the pixel defining layer 34 sequentially overlaps the organic light emitting layer 32 and the cathode layer 33, and a portion between the two pixel defining layers 34 is a light emitting region of the sub-pixel layer 3.

The cathode layer 33 may be covered with an inorganic encapsulation layer i 41 by atomic layer deposition, vapor deposition, or the like, and the inorganic encapsulation layer i 41 may be formed by a combination of AiO, TiO, SiN, SiO, Si0N, or the like, preferably SiN, and has a thickness of 500nm to 2000nm, preferably 1000 nm.

The position of the surface of the inorganic packaging layer I41 opposite to the pixel defining layer 34 is provided with an isolation layer 43 in an ink-jet printing mode, the surface of the inorganic packaging layer I41 is provided with an organic packaging layer 42 in an ink-jet printing mode, of course, the organic packaging layer 42 and the isolation layer 43 can also be prepared by atomic layer deposition, vapor deposition and other methods, the organic packaging layer 42 can adopt organic matters such as acrylic and epoxy resin, the isolation layer 43 can adopt black resin or other opaque organic matters, the thicknesses of the organic packaging layer 42 and the isolation layer 43 are set to be 1000-4000 nm, preferably 2000nm, the organic packaging layer 42 is filled and covered on the periphery of the isolation layer 43, and a mixed organic layer structure with a stable structure can be formed.

The cross-sectional shape of isolation layer 43 sets up to be less than the isosceles trapezoid that goes to the bottom at the upper base, because the side slope, can effectively control the refraction angle that sub-pixel layer 3 sent light, makes light refract along the side of isolation layer 43, and can not produce too big reflection angle, avoids producing the problem of keeping apart the crosstalk.

Specifically, an inorganic packaging layer II 6 and an organic buffer layer 7 are sequentially stacked between the organic packaging layer 42 and the color film layer 5, the inorganic packaging layer II 6 can be prepared by atomic layer deposition, vapor deposition and other methods, and can be formed by combining AiO, TiO, SiN, SiO, Si0N and the like, preferably SiN with the thickness of 500 nm-2000 nm, preferably 1000nm, and the inorganic packaging layer II 6 covers the surfaces of the organic packaging layer 42 and the isolation layer 43, so that the packaging performance is ensured, and the packaging effect is better; the organic buffer layer plays a role in flattening, the thickness of the organic buffer layer is set to be 1000-2000 nm, 1500nm is preferred, and the subsequent coating performance of the color film layer is better.

The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.

Claims

1. The utility model provides a reduce OLED display panel of optical crosstalk influence, its characterized in that, including base layer (1), drive circuit layer (2), subpixel layer (3), encapsulated layer (4) and the various rete (5) of range upon range of setting, set up a plurality of subpixel layers (3) on base layer (1), encapsulated layer (4) are including range upon range of covering inorganic encapsulated layer I (41) and organic encapsulated layer (42) on subpixel layer (3) surface, be provided with a plurality of isolation layers (43) in organic encapsulated layer (42), set up between two adjacent subpixel layers (3) isolation layer (43).

2. The OLED display panel reducing the effects of optical crosstalk of claim 1, wherein: the sub-pixel layer (3) comprises an anode layer (31), an organic light emitting layer (32) and a cathode layer (33) which are sequentially stacked on the driving circuit layer (2), a pixel defining layer (34) is arranged between every two adjacent anode layers (31), and the upper end of each pixel defining layer (34) sequentially overlaps and covers the organic light emitting layer (32) and the cathode layer (33).

3. The OLED display panel reducing the effects of optical crosstalk according to claim 2, wherein: the surface of the cathode layer (33) covers the inorganic packaging layer I (41), the isolation layer (43) is formed at the position, opposite to the pixel definition layer (34), of the surface of the inorganic packaging layer I (41) in an ink-jet printing mode, the organic packaging layer (42) is formed on the surface of the inorganic packaging layer I (41) in an ink-jet printing mode, and the organic packaging layer (42) is filled and covered on the periphery of the isolation layer (43).

4. The OLED display panel for reducing the effects of optical crosstalk according to claim 3, wherein: the cross section of the isolation layer (43) is in an isosceles trapezoid shape, and the upper bottom of the isosceles trapezoid is smaller than the lower bottom of the isosceles trapezoid.

5. The OLED display panel for reducing the effects of optical crosstalk according to claim 3, wherein: the thickness of organic packaging layer (42) and isolation layer (43) all sets up to 1000 ~ 4000nm, the thickness of inorganic packaging layer I (41) sets up to 500 ~ 2000 nm.

6. The OLED display panel for reducing the influence of optical crosstalk according to any one of claims 1 to 5, wherein: an inorganic packaging layer II (6) and an organic buffer layer (7) are sequentially stacked between the organic packaging layer (42) and the color film layer (5).

7. The OLED display panel for reducing the effects of optical crosstalk according to claim 6, wherein: the thickness of the inorganic packaging layer II (6) is set to be 500-2000 nm, and the thickness of the organic buffer layer (7) is set to be 1000-2000 nm.