Display device and manufacturing method thereof

Abstract

The present application discloses a display device, including a pixel array, and scan lines and data lines coupled to the pixel array; the pixel array at least includes a substrate layer, a metal light-shielding layer, a passivation layer, and an active layer stacked in sequence , a dielectric layer, and a control electrode layer, wherein the control electrode layer is coupled to the scan line; wherein the metal light-shielding layer includes a plurality of parts, the first part is basically located under the active region, and the second part is located under the active region. The area other than the area below the active area, wherein the first part and the second part of the metal light-shielding layer are electrically isolated from each other; the data line and the second part of the metal light-shielding layer at least partially overlap each other, and the scanning line and the second part of the metal light-shielding layer overlap each other at least partially The second parts of the metal light-shielding layer are electrically connected to each other through the scanning line contact holes. The present application also provides a method for preparing such a display device.

Description

technical field [0001] The present application belongs to the field of information display, and in particular relates to a TFT display device and a method for preparing the display device. Background technique [0002] At present, the development trend of display screens is larger scale and higher display accuracy. For example, for 98-inch or 110-inch display screens, the display accuracy can reach 16K or 32K. However, such a development trend will cause the number of scan lines and data lines of the display to double, and the number of intersections between the two will also double, resulting in an increase in the parasitic capacitance of the data line, a significant increase in RC delay, and a cost of charging time. The multiplier is reduced, so that the data signal cannot be accurately transmitted to the corresponding pixel. [0003] Compared with traditional a-Si TFTs, IGZO TFTs have the advantage of high mobility and are suitable for driving large-size, high-PPI displa...

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Problems solved by technology

However, such a development trend will cause the number of scan lines and data lines of the display to double, and the number of intersections between the two will also double, resulting in an increase in the parasitic capacitance of the data line, a significant increase in RC delay, and a cost of charging time. The times are reduced, so that the data signal cannot be accurately transmitted to the corresponding pixel

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