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OLED display panel and preparation method thereof

A technology for display panels and substrates, which is used in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve the problems of bright spots and defective products on display panels, and achieves the effect of avoiding bright spots and reducing the rate of defective products.

Active Publication Date: 2021-12-03
HKC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to propose an OLED display panel and its preparation method, aiming to solve the problem that the hydrogen in the packaging film of the existing OLED panel will diffuse to the oxide semiconductor layer, causing bright spots on the display panel, resulting in defective products

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  • OLED display panel and preparation method thereof
  • OLED display panel and preparation method thereof
  • OLED display panel and preparation method thereof

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Embodiment Construction

[0043] For purposes of the present invention, technical solutions, and advantages of the embodiments become apparent, the invention will now technical solutions in the embodiments clearly and completely described. Examples are the specific conditions are not specified embodiment, in accordance with conventional conditions or conditions recommended by the manufacturer. The reagents or equipment not specified by the manufacturer, both can be purchased conventional products obtained through a commercial.

[0044] Further, text appearing in the meaning of "and / or" comprising three parallel programs to "A and / or B" as an example, the program including A, B or programs, or A and B satisfy both solutions. The technical scheme between the various embodiments may be combined with each other, but must be based on those of ordinary skill in the art can be implemented as the basis, when combined with the technical solutions appear contradictory or impossible should be considered in conjun...

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Abstract

The invention discloses an OLED display panel and a preparation method thereof, and belongs to the technical field of display. The OLED display panel comprises a substrate, a thin film transistor layer, a passivation layer, a light-emitting layer and a packaging layer which are sequentially arranged in a stacked mode, wherein the thin film transistor layer comprises a plurality of thin film transistors, wherein each thin film transistor comprises an oxide semiconductor layer. The OLED display panel further comprises a blocking layer; the blocking layer is arranged between the light-emitting layer and the passivation layer, and the blocking layer is used for blocking hydrogen generated by the packaging layer from being transferred to the oxide semiconductor layer. Through the arrangement of the blocking layer, the hydrogen generated by the packaging layer is prevented from being transferred to the oxide semiconductor layer, so that the situation that oxygen vacancies of the oxide semiconductor layer are conducted by hydrogen and the concentration of carrier ions at the oxygen vacancies is increased is avoided, generation of bright spots is avoided, and the reject ratio of products is reduced.

Description

Technical field [0001] The present invention relates to the field of display technology, and particularly relates to a method for preparing an OLED panel display. Background technique [0002] The organic light emitting diode (Organic Light-Emitting Device, referred to as OLED) display panel, and is different from a conventional liquid crystal display (Liquid Crystal Display, referred to as LCD) display device, comprising active light, temperature characteristics, low power consumption, in response to fast, flexible, ultra-thin and low cost. [0003] A thin film transistor (Thin Film Transistor, TFT) element is the main driving an OLED display panel, and as the display technology, the oxide thin film transistor technology is considered a promising technology substituted amorphous silicon thin film transistor, the next generation display drive backplane mainstream technology. [0004] Currently, in order to protect the OLED device within OLED display panel package film it is gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/12H01L27/32H01L29/786H01L21/84H01L21/34
CPCH01L27/1218H01L27/1262H01L29/78606H01L29/7869H01L29/66969H10K59/12H10K59/1201
Inventor 李源规卢正权唐波玲李荣荣
Owner HKC CORP LTD