US 6,747,290 B2 · Information device

Abstract

Problems exist in areas such as image visibility, endurance of the device, precision, miniaturization, and electric power consumption in an information device having a conventional resistive film method or optical method pen input function. Both EL elements and photoelectric conversion elements are arranged in each pixel of a display device in an information device of the present invention having a pen input function. Information input is performed by the input of light to the photoelectric conversion elements in accordance with a pen that reflects light by a pen tip. An information device with a pen input function, capable of displaying a clear image without loss of brightness in the displayed image, having superior endurance, capable of being miniaturized, and having good precision can thus be obtained.

Claims55

Dependent claims

An information device comprising:

a plurality of pixels arranged in a matrix shape, each of the plurality of pixels comprising an EL element and a photoelectric conversion element over a same substrate;
a means for making the EL element emit light;
an input pen for reflecting a light emitted by the EL element and for inputting the light to the photoelectric conversion element of a portion of pixels among the plurality of pixels;
and
a means for detecting coordinates of the portion of the pixels.

2 more elements

An information device comprising:

a plurality of pixels arranged in a matrix shape, each of the plurality of pixels comprising an EL element and a photoelectric conversion element over a same substrate;
a means for making the EL element emit light;
an input pen for reflecting a light emitted by the EL element and for inputting the light to the photoelectric conversion element of a portion of pixels among the plurality of pixels;
and
a means for detecting an intensity of the light irradiated to the photoelectric conversion element.

2 more elements

An information device comprising:

a plurality of pixels arranged in a matrix shape, each of the plurality of pixels comprising an EL element and a photoelectric conversion element over a same substrate;
a means for making the EL element emit light;
and
a means for detecting an intensity of the light irradiated to the photoelectric conversion element.

1 more element

A portable information terminal comprising:

a plurality of pixels arranged in a matrix shape, each of the plurality of pixels comprising an EL element and a photoelectric conversion element over a same substrate;
a means for making the EL element emit light;
an input pen for reflecting a light emitted by the EL element and for inputting the light to the photoelectric conversion element of a portion of pixels among the plurality of pixels;
and
a means for detecting coordinates of the portion of the pixels.

2 more elements

A portable information terminal comprising:

a plurality of pixels arranged in a matrix shape, each of the plurality of pixels comprising an EL element and a photoelectric conversion element over a same substrate;
a means for making the EL element emit light;
an input pen for reflecting a light emitted by the EL element and for inputting the light to the photoelectric conversion element of a portion of pixels among the plurality of pixels;
and
a means for detecting an intensity of the light irradiated to the photoelectric conversion element.

2 more elements

Dependencies are inferred from the claim text.

Information device

Life of this patent

Information device

Life of this patent

Abstract

Claims55