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Display panel and display device including partition wall

專利號
US11805674B2
公開日期
2023-10-31
申請人
SEMICONDUCTOR ENERGY LABORATORY CO., LTD.（JP Atsugi）
發(fā)明人
Daiki Nakamura; Nozomu Sugisawa
IPC分類
H10K50/85; H10K50/86; H10K50/84; H10K59/00; H10K59/12; H01L33/44; H05B33/22; G09F9/30; H10K50/856; H10K50/828; H10K50/844; H10K59/90; H10K50/818; H10K59/123
技術(shù)領(lǐng)域
display,layer,insulating,light,electrode,region,in,panel,emitting,visible
地域： Atsugi

摘要

A display device including display regions with inconspicuous seam is provided. The display device includes a first display panel and a second display panel. The first display panel includes a first display region and a visible-light-transmitting region. The second display panel includes a second display region. The first display region is adjacent to the visible-light-transmitting region. The first display region includes a first light-emitting element and a second light-emitting element. A first common electrode included in the first light-emitting element includes a portion in contact with a second common electrode included in the second light-emitting element. The first common electrode has a function of reflecting visible light. The second common electrode has a function of transmitting visible light. The second light-emitting element is positioned closer to the visible-light-transmitting region than the first light-emitting element. The second display region includes a portion overlapping with the second light-emitting element and a portion overlapping with the visible-light-transmitting region.

說明書

The partition wall 118 is provided over the insulating layer 104. The level of the top surface of the partition wall 118 is higher than the level of the top surface of the common electrode 113a in the light-emitting region of the light-emitting element 110.

When a metal mask is in contact with the partition wall 118 in the formation of the common electrode 113a, the common electrode 113a can be prevented from protruding into the visible-light-transmitting region 72. Thus, the common electrode 113a can be formed such that the end portion of the common electrode 113a is positioned inside the partition wall 118 (see FIGS. 12(A) and 12(B)). Since the common electrode 113a does not extend to the visible-light-transmitting region 72 and can be formed in a desired region, the display quality of the display device can be improved.

It is preferable that the protective layer 105 cover the end portion of the common electrode 113a and be in contact with the insulating layer 104 outside the end portion of the common electrode 113a. FIG. 12(A) illustrates an example in which the protective layer 105 extends to the visible-light-transmitting region 72, and FIG. 12(B) illustrates an example in which the protective layer 105 is not provided in the visible-light-transmitting region 72 and the end portion of the protective layer 105 is positioned over the insulating layer 104.

權(quán)利要求

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