Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device
摘要
說明書
The display portion 903 can display at least one of a text, a still image, a moving image, and the like. When a text is displayed on the display portion, the portable information terminal 900 can be used as an e-book reader.
When the portable information terminal 900 is opened, the display portion 903 is significantly curved. For example, the display portion 903 is held while including a curved portion with a radius of curvature of greater than or equal to 1 mm and less than or equal to 50 mm, preferably greater than or equal to 5 mm and less than or equal to 30 mm. Part of the display portion 903 can display an image while being bent since pixels are continuously arranged from the housing 901 to the housing 902.
The display portion 903 functions as a touch panel and can be controlled with a finger, a stylus, or the like.
The display portion 903 is preferably formed using one flexible display. Thus, a continuous image can be displayed between the housing 901 and the housing 902. Note that each of the housing 901 and the housing 902 may be provided with a display.
The hinge portion 905 preferably includes a locking mechanism so that an angle formed between the housing 901 and the housing 902 does not become larger than a predetermined angle when the portable information terminal 900 is opened. For example, an angle at which the housing 901 and the housing 902 become locked (they are not opened any further) is preferably greater than or equal to 90° and less than 180° and can be typically 90°, 120°, 135°, 150°, 175°, or the like. In that case, the convenience, safety, and reliability of the portable information terminal 900 can be improved.
