CN216749953U - Structure for reducing Micro OLED crosstalk - Google Patents

Abstract

The utility model discloses a structure for reducing crosstalk of Micro OLED (organic light emitting diode), which comprises: the shading array is arranged between the OC layer and the color filter layer, wherein the color filter layer is composed of a red pixel filter block, a blue pixel filter block and a green pixel filter block, and the colors of the two adjacent pixel filter blocks are different; the shading array is composed of a plurality of shading blocks, and the shading blocks are arranged at the connection positions of two adjacent pixel filtering blocks. After the shading array between the OC layer and the color filter layer is arranged, light rays entering the joint of the two pixel filter blocks with different colors can be absorbed by the shading block, and the occurrence of optical crosstalk is reduced.

Description

Structure for reducing Micro OLED crosstalk

Technical Field

The utility model belongs to the technical field of Micro OLEDs, and particularly relates to a structure for reducing crosstalk of Micro OLEDs.

Background

The silicon-based OLED display is a novel display technology combining a semiconductor and an OLED, and is a main scheme of VR/AR and other next-generation intelligent wearable display. With the continued advancement of 5G and AI technologies, more and more wearable display products will become more attractive. 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 high-resolution near-to-eye display industries 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 great 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 white light and color glue (CF) mode to realize color display, when the structure is used, an encapsulation layer and an OC layer are arranged between a light emitting layer and the color glue (CF) at intervals, the distance is long, the phenomenon of light crosstalk is easy to occur, the problems of color cast, color gamut reduction and the like are caused, particularly, a new thin film encapsulation technology is adopted, and when an inorganic and organic superposition mode is adopted, the film layer is thick, and the defect is aggravated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a structure for reducing crosstalk of Micro OLED (organic light emitting diode), aiming at reducing crosstalk of Micro OLED beams.

The utility model is realized by a structure for reducing crosstalk of Micro OLED (organic light emitting diode), which comprises:

the shading array is arranged between the OC layer and the color filter layer, wherein the color filter layer is composed of a red pixel filter block, a blue pixel filter block and a green pixel filter block, and the colors of the two adjacent pixel filter blocks are different;

the shading array is composed of a plurality of shading blocks, and the shading blocks are arranged at the connection positions of two adjacent pixel filtering blocks.

Further, the shading array is a black matrix BM.

Further, the structure further comprises:

and the metal reflecting layer is positioned on the surface of the shading block in the color filter layer or on the surface except the bottom surface of the shading block.

Furthermore, the material of the metal reflecting layer is Al.

After the shading array between the OC layer and the color filter layer is arranged, light rays emitted to the joint of the two pixel filter blocks with different colors can be absorbed by the shading block, so that the light crosstalk phenomenon is reduced.

Drawings

FIG. 1 is a schematic structural view of a Micro OLED crosstalk reduction structure according to an embodiment of the present invention;

FIG. 2 is a schematic cross-talk diagram of a conventional Micro OLED;

FIG. 3 is a schematic diagram of a light blocking array-based method for reducing crosstalk according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a metal reflective layer according to an embodiment of the utility model;

fig. 5 is a schematic structural diagram of a metal reflective layer according to a second embodiment of the present invention;

1. the pixel light-emitting device comprises an Anode, a pixel definition layer PDL (2), a light-emitting film layer 3, a packaging layer 4, an OC layer 5, a shading array 6, a metal reflection layer 7, a red pixel filtering block 8-1, a green pixel filtering block 8-2, a blue pixel filtering block 8-3 and a silicon chip substrate 9.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention by those skilled in the art.

Fig. 1 is a schematic structural diagram of reducing the crosstalk of Micro OLEDs provided by the present invention, and for convenience of illustration, only the portions related to the embodiment of the present invention are shown.

The structure includes:

the shading array 6 is arranged between the OC layer 5 and the color filter layer, wherein the color filter layer consists of a red pixel filter block 8-1, a green pixel filter block 8-2 and a blue pixel filter block 8-3;

the shading array 6 is composed of a plurality of shading blocks, the shading blocks are arranged at the connection positions of two pixel filtering blocks with different colors, and by taking fig. 1 as an example, in the color filtering layer in fig. 1, the red pixel filtering block 8-1, the green pixel filtering block 8-2 and the blue pixel filtering block 8-3 are repeatedly arranged in sequence, so that the shading blocks are positioned at the connection positions of the red pixel filtering block 8-1 and the green pixel filtering block 8-2, the green pixel filtering block 8-2 and the blue pixel filtering block 8-3, and the blue pixel filtering block 8-3 and the red pixel filtering block 8-1.

When light enters the joint of two pixel filtering blocks with different colors, emergent light of the light easily meets the joint to generate a light crosstalk phenomenon, as shown in fig. 2, after the light shielding array between the OC layer 5 and the color filtering layer is arranged, the light entering the joint of the two pixel filtering blocks with different colors can be absorbed by the light shielding block 6, and the occurrence of the light crosstalk phenomenon is reduced, as shown in fig. 3.

In the embodiment of the present invention, the light shielding array 6 is a black matrix BM made of Cr and GrO_xBlack resin, etc. with a thickness of 1nm to 2nm, the OC layer 5 with a thickness of 80nm, and the color filter layer with a thickness of 1 to 1.5 μm.

In the embodiment of the present invention, the light shielding array disposed between the OC layer 5 and the color filter layer can reduce the occurrence of optical crosstalk, and at the same time, reduce the light emitting efficiency, thereby reducing the brightness of the device, in order to improve the problem, the structure for reducing the Micro OLED crosstalk in the present invention further includes:

and the metal reflecting layer 7 is positioned on the surface of the light shielding array 6 in the color filter layer or on the surface except the bottom surface of the light shielding array 6, light enters the top surface of the OC layer 5 through the bottom surface of the OC layer 5, and the bottom surface of the light shielding array is the surface in contact with the packaging layer 4.

The metal reflective layer 7 in fig. 4 is located on the surface of the light-shielding array in the color filter layer, and when light enters the metal reflective layer, the light is emitted out in a direction deviating from the original direction, so that the occurrence of the optical crosstalk phenomenon is reduced, and the brightness of the device is improved and reduced, and fig. 5 is a schematic diagram of the surface of the metal reflective layer 7 located outside the bottom surface of the light-shielding array 6. In an embodiment of the utility model, the thickness of Al, which is a material of the metal layer, is 100nm to 700 nm.

The utility model has been described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the specific implementation in the above-described manner, and it is within the scope of the utility model to apply the inventive concept and solution to other applications without substantial modification.

Claims (4)

1. A structure for reducing Micro OLED crosstalk, the structure comprising:

the shading array is arranged between the OC layer and the color filter layer, wherein the color filter layer is composed of a red pixel filter block, a blue pixel filter block and a green pixel filter block, and the colors of the two adjacent pixel filter blocks are different;

the shading array is composed of a plurality of shading blocks, and the shading blocks are arranged at the connection positions of two adjacent pixel filtering blocks.

2. The structure for reducing Micro OLED crosstalk of claim 1, wherein said light blocking array is a black matrix BM.

3. The structure for reducing Micro OLED crosstalk according to claim 1 or 2, wherein said structure further comprises:

and the metal reflecting layer is positioned on the surface of the shading block in the color filter layer or on the surface except the bottom surface of the shading block.

4. The structure for reducing Micro OLED crosstalk according to claim 1 or 2, wherein the material of the metal reflective layer is Al.

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