Display panel

By designing the active layer and gate layer structure of different materials in the display panel and removing the metal layer, the process of the display panel is simplified, the cost is reduced and the transmission capacity of the output circuit is improved, and the process complexity in the existing LTPO technology is solved. and high cost issues.

CN119300659AActive Publication Date: 2025-01-10WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202411564589.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-01-10
Estimated Expiration
2044-11-04

AI Technical Summary

Technical Problem

The existing display devices using LTPO technology have complex processes and high costs, mainly due to the large number of film layers and the large number of mask plates.

Method used

By designing a plurality of gate driving units in the display panel, including an output circuit and a receiving circuit, the active portion of the gate transistor is located in the first active layer, and a plate of the storage capacitor is located in the second active layer, and the gate electrode is located in the second active layer. The gate of the transistor and the other plate of the storage capacitor are located in the first gate layer. Using the material opposite nature of the first active layer and the second active layer, the metal layer of the original storage capacitor is removed to reduce the film. Number of layers, simplify the process.

Benefits of technology

The preparation process of the display panel is simplified, the cost is reduced, the transmission capacity of the output circuit is improved, the leakage current is reduced, and the stability is improved.

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  • Figure CN119300659A_ABST
    Figure CN119300659A_ABST
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Abstract

The invention discloses a display panel. A gate driving unit of the display panel comprises an output circuit, a receiving circuit and a storage capacitor which are connected, each of the output circuit and the receiving circuit comprises a gate transistor, an active part of at least one gate transistor is located on a first active layer, and a polar plate of the storage capacitor is located on a second active layer. The gate of the gate transistor and the other polar plate of the storage capacitor are located on a first gate layer, and the first gate layer, the first active layer and the second active layer are arranged in different layers; the active part of the gate transistor is arranged by using the material of the first active layer, and the polar plate of the storage capacitor is arranged by using the material of the second active layer, so that the polar plate of the storage capacitor is replaced by the material of the active layer from a metal material, a metal layer for preparing the polar plate of the storage capacitor originally is removed, and the number of film layers of the display panel is reduced; and the preparation process of the display panel is simplified.
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Citation Information

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