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Array substrate and preparation method thereof, display panel and display device

An array substrate and substrate substrate technology, which is applied in the fields of array substrate, its preparation, display panel and display device, can solve the problems of coating film layer ripple, affecting the yield rate of the array substrate, large hole depth and size, etc. The effect of reducing and avoiding the ripple of the coating film and improving the yield

Inactive Publication Date: 2015-02-04
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an array substrate, its preparation method, a display panel and a display device, so as to solve the problems caused by the relatively large hole depth and size of the via holes connecting the common electrodes and the common electrode lines during the preparation of the array substrate. The coating film layer in the subsequent preparation process produces ripples that affect the yield of the array substrate

Method used

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  • Array substrate and preparation method thereof, display panel and display device
  • Array substrate and preparation method thereof, display panel and display device
  • Array substrate and preparation method thereof, display panel and display device

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Embodiment 1

[0065] An embodiment of the present invention provides an array substrate, including a base substrate, a gate metal layer, a gate insulating layer, an active layer, a source-drain metal layer, a passivation layer, and a common electrode layer sequentially formed on the base substrate , and a pixel electrode layer located between the active layer and the source-drain metal layer or between the source-drain metal layer and the passivation layer; the gate metal layer includes a gate electrode and a common electrode line;

[0066] The pixel electrode layer or the source-drain metal layer includes a connection electrode, the connection electrode is electrically connected to the common electrode line through the first via hole on the gate insulating layer, and the connection electrode is connected to the common electrode line through the second via hole on the passivation layer. The common electrode is electrically connected.

[0067] In the embodiment of the present invention, by s...

Embodiment 2

[0096] An embodiment of the present invention provides a display panel, including the array substrate of the above embodiment. Of course, the display panel in this embodiment may also include a color filter substrate, liquid crystal, and other commonly used accessories, which will not be repeated here.

[0097] The beneficial effects of the embodiments of the present invention are as follows: the pixel electrode layer or the source-drain metal layer is provided with a connecting electrode, the connecting electrode is electrically connected to the common electrode line through the first via hole, and the common electrode is electrically connected to the connecting electrode through the second via hole, realizing For the electrical connection between the common electrode and the common electrode line, since the first via hole and the second via hole are respectively arranged on different layers and are electrically connected through the connecting electrode, the depth and size of...

Embodiment 3

[0099] An embodiment of the present invention provides a display device, including the display panel of the above embodiment. The display device of the embodiment may further include a backlight module, a frame, a base, etc., which will not be repeated here.

[0100] The beneficial effects of the embodiments of the present invention are as follows: a connection electrode is provided between the gate insulating layer and the passivation layer of the array substrate, the connection electrode is electrically connected to the common electrode line through the first via hole, and the common electrode is connected to the connection electrode through the second via hole Electrical connection to realize the electrical connection between the common electrode and the common electrode line. Since the first via hole and the second via hole are respectively arranged in different layers and realize electrical connection through the connecting electrode, the depth and size of the hole are com...

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Abstract

The invention discloses an array substrate and a preparation method thereof, a display panel and a display device so as to solve a problem that in a preparation process of the array substrate, because the hole depths and sizes of via holes which connect public electrodes and a public electrode line are comparatively large, waves are generated in a coating film layer in a follow-up preparation process so that the yield of the array substrate is affected. The array substrate includes an underlayer substrate, and a grid electrode metal layer, a grid electrode insulating layer, an active layer, a source and drain electrode metal layer, a passivation layer and a public electrode layer, which are formed sequentially on the underlayer substrate, and a pixel electrode layer located between the active layer and the source and drain electrode metal layer, or between the source and drain electrode metal layer and the passivation layer. The grid electrode metal layer includes a grid electrode and a public electrode line. The pixel electrode layer or the source and drain electrode metal layer includes a connection electrode. The connection electrode is electrically connected with the public electrode line through a first via hole in the grid electrode insulating layer. The connection electrode is electrically connected with the public electrodes of the public electrode layer through a second via hole in the passivation layer.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to an array substrate, a preparation method thereof, a display panel and a display device. Background technique [0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD) is an ideal display device due to its advantages of small size, low power consumption, and no radiation. In recent years, the application range of TFT-LCD in the display field has gradually expanded, and related technologies have also developed rapidly. Among them, High aperture ratio Advanced-Super Dimensional Switching (High aperture ratio Advanced-Super Dimensional Switching, HADS) has been widely used in various display products due to its wide viewing angle and low color shift and many other advantages. [0003] Such as figure 1 As shown, the array substrate prepared by the HADS technology in the prior art includes a base substrate 1, a gate electrode 2, a common electrode line 3, a gate insulating ...

Claims

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Application Information

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IPC IPC(8): H01L27/12H01L21/77G02F1/1362G02F1/1368
CPCH01L27/124G02F1/136227G02F1/136231H01L27/1244H01L27/1248G09G2300/0426H10K59/121H10K59/123
Inventor 占红明
Owner BOE TECH GRP CO LTD
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