摘要:
It is an object to achieve downsizing and a thin shape of a display module and an electronic device provided with the display module. The display module includes a first display panel in which a first display screen is formed on one main side; and a second display panel that is smaller than and overlapped with the first display panel, in which a second display screen is formed on an opposite side of the one main side. The display module includes, over a sealing substrate of the first display panel and/or the second display panel, at least one integrated circuit, which is connected to input terminals of the first display panel and the second display panel and controls operation of the both panels, arranged in a peripheral portion of the second display panel, which is a surface on an opposite side of a display surface of the first display panel.
摘要:
A structure for preventing deteriorations of a light-emitting device and retaining sufficient capacitor elements (condenser) required by each pixel is provided. A first passivation film, a second metal layer, a flattening film, a barrier film, and a third metal layer are stacked in this order over a transistor. A side face of a first opening provided with the flattening film is covered by the barrier film, a second opening is formed inside the first opening, and a third metal layer is connected to a semiconductor via the first opening and the second opening. A capacitor element that is formed of a lamination of a semiconductor of a transistor, a gate insulating film, a gate electrode, the first passivation film, and the second metal layer is provided.
摘要:
A method of manufacturing, with high mass productivity, liquid crystal display devices having highly reliable thin film transistors with excellent electric characteristics is provided. In a liquid crystal display device having an inverted staggered thin film transistor, the inverted staggered thin film transistor is formed as follows: a gate insulating film is formed over a gate electrode; a microcrystalline semiconductor film which functions as a channel formation region is formed over the gate insulating film; a buffer layer is formed over the microcrystalline semiconductor film; a pair of source and drain regions are formed over the buffer layer; and a pair of source and drain electrodes are formed in contact with the source and drain regions so as to expose a part of the source and drain regions.
摘要:
An object is to obtain a diode having a small voltage drop and to reduce the fabrication cost of a converter circuit. A photoelectric transducer device including: a photoelectric transducer element; and a converter circuit stepping up or stepping down an output of the photoelectric transducer element and including a switching element and a rectifier, in which the switching element is a first insulated gate bipolar transistor that is normally off and in which the rectifier is a second insulated gate bipolar transistor that is diode-connected and normally on.
摘要:
An area sensor of the present invention has a function of displaying an image in a sensor portion by using light-emitting elements and a reading function using photoelectric conversion devices. Therefore, an image read in the sensor portion can be displayed thereon without separately providing an electronic display on the area sensor. Furthermore, a photoelectric conversion layer of a photodiode according to the present invention is made of an amorphous silicon film and an N-type semiconductor layer and a P-type semiconductor layer are made of a polycrystalline silicon film. The amorphous silicon film is formed to be thicker than the polycrystalline silicon film. As a result, the photodiode according to the present invention can receive more light.
摘要:
To provide a display device whose display can be recognized even in dark places or under the strong outside light. The display device performs display by controlling the number of gray scales in accordance with the intensity of outside light, which means a display mode can be switched in accordance with the data to be displayed on the display screen. A video signal generation circuit is controlled in each display mode in such a manner that it directly outputs an input video signal with an analog value, outputs a signal with a binary digital value, or outputs a signal with a multivalued digital value. As a result, gray scales displayed in pixels are timely changed. Accordingly, clear images can be displayed while maintaining high visibility in various environments, in the wide range from, for example, dark places or indoors (e.g., under a fluorescent lighting) to outdoors (e.g., under the sunlight).
摘要:
A pixel is divided into m (m is an integer of m≧2) sub-pixels, and an area ratio of an s-th (s is an integer of 1 to m) sub-pixel is to be 2s-1. Also, k (k is an integer of k≧2) sub-frame groups including a plurality of sub-frames are provided in one frame, along with dividing one frame into n (n is an integer of n≧2) sub-frames, so that a ratio of a lighting period length of a t-th (t is an integer of 1 to n) sub-frame is 2(t-1)m. Further, each of the n sub-frames is divided into k sub-frames each having a lighting period length that is about 1/k of each of the n sub-frames, and one of these is provided in each of the k sub-frame groups.
摘要:
In the case where variations of environmental temperature or variations with time occur depending on characteristics of a light-emitting element, variations are generated in luminance. In the invention, a display device for suppressing effects due to variations of a current value of a light-emitting element, which is caused by variations of environmental temperature and variations with time.A first substrate having a pixel portion in which pixels constituted by a plurality of transistors are arranged in matrix has a source driver for supplying a video signal, a gate driver for selecting a pixel, a power source circuit, and a compensation circuit for compensating variations in characteristics of a light-emitting element. The first substrate is connected to a second substrate through a connecting wire, and the second substrate has a controller and a video memory. The controller is a piece for making a signal which is necessary for a display device to display from image data to be inputted externally such as a CPU by using a video memory as required.
摘要:
The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted.
摘要:
The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted.