Display device
First Claim
1. A display device which includes a substrate on which pixels are mounted in a matrix array within an effective screen thereof, and in which an image signal applied to each pixel is controlled by a thin film transistor which corresponds to each pixel, whereina photosensor is arranged on the substrate outside the effective screen, the photosensor generates a signal by interrupting an external light, and the signal from the photosensor allows the display device to perform a specific function.
3 Assignments
0 Petitions
Accused Products
Abstract
A photosensor for selecting a specific function is arranged around an effective screen. A window is formed in a portion of a display substrate corresponding to the photosensor. When a user touches the window with his/her finger, an external light is interrupted and a signal is generated, and the signal is used as a signal for selecting the specific function. The photosensor and peripheral circuits are formed using a process substantially equal to, a process for forming a TFT of a pixel portion and hence, the increase of a cost can be suppressed.
25 Citations
20 Claims
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1. A display device which includes a substrate on which pixels are mounted in a matrix array within an effective screen thereof, and in which an image signal applied to each pixel is controlled by a thin film transistor which corresponds to each pixel, wherein
a photosensor is arranged on the substrate outside the effective screen, the photosensor generates a signal by interrupting an external light, and the signal from the photosensor allows the display device to perform a specific function.
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12. A liquid crystal display device comprising:
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a liquid crystal display panel which includes a TFT substrate on which pixel electrodes and thin film transistors each of which controls a signal voltage applied to the pixel electrodes are formed within an effective screen thereof, a color filter substrate on which color filters and a black matrix are formed within an effective screen thereof, and liquid crystal which is sandwiched by the TFT substrate and the color filter substrate, and forms an image; and a backlight, wherein the photosensor is formed outside the effective screen of the TFT substrate, the photosensor generates a signal by interrupting an external light, and the signal from the photosensor allows the display device to perform a specific function. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An organic EL display device which includes a substrate on which organic EL layers which constitute pixels within an effective screen are formed in a matrix array, and forms an image by applying a signal voltage to the organic EL layers, wherein
the signal voltage applied to the organic EL layer is controlled by a thin film transistor, a photosensor is arranged on the substrate outside the effective screen, the photosensor generates a signal by interrupting an external light, and the signal from the photosensor allows the display deice to perform a specific function.
Specification