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Organic light-emitting diode panel, manufacturing method thereof, and display device
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A technology of light-emitting diodes and panels, which is applied in the fields of organic semiconductor devices, semiconductor/solid-state device manufacturing, and electric solid-state devices, and can solve problems such as low yield rate and high production costs
Active Publication Date: 2020-10-02
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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Problems solved by technology
[0005] The technical problem to be solved by the embodiments of the present invention is to provide an OLED panel and its preparation method, and an OLED display device to solve the problems of high production cost and low yield in the prior art.
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no. 1 example
[0066] figure 1 It is a schematic structural diagram of an OLED panel according to an embodiment of the present invention, which is a top-emitting OLED. The main structure of the OLED panel in this embodiment includes a plurality of pixel units arranged in a matrix, and each pixel unit includes 4 sub-pixels, which are respectively red sub-pixel R, green sub-pixel G, blue sub-pixel B and white sub-pixel W, By setting the adjustment layer, the required microcavity structure can be constructed. like figure 1 As shown, the OLED panel of this embodiment includes:
[0067] base 10;
[0068] A pixel structure layer 20, disposed on the substrate 10, the pixel structure layer 20 in each sub-pixel includes a thin film transistor 21;
[0069] The adjustment layer 30 is disposed on the pixel structure layer 20. In each sub-pixel, the adjustment layer 30 has a different set height H, assuming that the set height H refers to the distance between the surface of the adjustment layer 30 an...
no. 2 example
[0099] On the basis of the technical concepts of the foregoing embodiments, the embodiments of the present invention also provide a method for manufacturing an OLED panel. The preparation method of the OLED panel of the embodiment of the present invention comprises:
[0100] S1. Forming adjustment layers with different thicknesses in each sub-pixel;
[0101] S2. Forming a hole injection layer, the thickness of the hole injection layer is inversely proportional to the thickness of the adjustment layer in the sub-pixel.
[0102] Wherein, the adjustment layer is formed by using a multi-tone mask plate in one process. Specifically, step S1 includes:
[0103] S11, forming a pixel structure layer on the substrate, and coating an adjustment film on the pixel structure layer;
[0104] S12, exposing the adjustment film by using a multi-tone mask;
[0105] S13 , developing the adjustment thin film after the exposure treatment, and forming adjustment layers with different thicknesses i...
no. 3 example
[0120] An embodiment of the present invention also provides an OLED display device, including the OLED panel of the foregoing embodiment. The OLED display device can be any product or component with a display function such as a mobile phone, a tablet computer, a television set, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
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Abstract
The invention provides an organic light emitting diode panel, a preparation method thereof, and a display device. The organic light emitting diode panel includes a plurality of pixel units arranged in a matrix, each pixel unit includes a plurality of sub-pixels, each sub-pixel includes an adjustment layer and a hole injection layer, the thickness of the adjustment layer in each sub-pixel is different, and the hole injection layer The thickness of the layer is inversely proportional to the thickness of the adjustment layer in that subpixel. In the present invention, adjustment layers with different thicknesses are provided in each sub-pixel, and the thickness of the hole injection layer is inversely proportional to the thickness of the adjustment layer in the sub-pixel, so that the thickness of the hole injection layer in different sub-pixels is different, thereby limiting the structure. The microcavity structure has the advantages of simple structure, low manufacturing cost, high manufacturing precision and easy realization, and effectively solves the problems of high production cost and low yield of good products in the prior art.
Description
technical field [0001] The invention relates to the field of display technology, in particular to an organic light emitting diode panel, a preparation method thereof, and an organic light emitting diodedisplay device. Background technique [0002] Organic Light-Emitting Diode (OLED) is an active light-emitting display device, which has the advantages of self-illumination, wide viewing angle, high contrast, low power consumption, and high response speed. At present, for small-sized OLED products, the organic electroluminescent layer is usually formed by a fine metalmask (Fine MetalMask, FMM) evaporation process. In order to achieve low power consumption, high colorgamut, and increase light output, small-sized OLED products are usually constructed with a microcavity structure, which is constructed by evaporating hole injection layers (HIL) with different thicknesses, because the hole The hole injection layer has little influence on the light emission of the whole device. ...
Claims
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