Electroluminescent display device
First Claim
1. An electroluminescent display device comprising:
- a display portion comprising a plurality of display pixels arranged in a matrix, each of the pixels comprising a display electroluminescent element and a driving transistor driving the display electroluminescent element;
a light source portion comprising a plurality of light source electroluminescent elements and provided along a first side of the display portion;
a light detecting portion comprising a plurality of light sensors and provided along a second side of the display portion, the second side being opposite from the first side,wherein the display portion, the light source portion and the light detecting portion are disposed on a substrate;
a first reflecting board reflecting light emitted by the light source portion in a horizontal direction along a front surface of the substrate across the display portion; and
a second reflecting board reflecting the light reflected by the first reflecting board so as to lead the light into the light detecting portion through a back surface of the substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
In an organic electroluminescent display device having a touch panel function, the number of components is reduced and accuracy in positional detection of a pointing object is improved. A display portion, and light source portions and detecting portions respectively formed along sides of the display portion are formed on a same substrate to form a display panel. Then, first reflecting boards which reflect light emitted by the light source portions in a horizontal direction along an emissive surface of the display portion, and second reflecting boards which reflect the light reflected by the first reflecting boards and enters the light in the light detecting portions through a back surface of the display portion are respectively formed at ends of a storage capacitor of a display panel.
21 Citations
7 Claims
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1. An electroluminescent display device comprising:
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a display portion comprising a plurality of display pixels arranged in a matrix, each of the pixels comprising a display electroluminescent element and a driving transistor driving the display electroluminescent element; a light source portion comprising a plurality of light source electroluminescent elements and provided along a first side of the display portion; a light detecting portion comprising a plurality of light sensors and provided along a second side of the display portion, the second side being opposite from the first side, wherein the display portion, the light source portion and the light detecting portion are disposed on a substrate; a first reflecting board reflecting light emitted by the light source portion in a horizontal direction along a front surface of the substrate across the display portion; and a second reflecting board reflecting the light reflected by the first reflecting board so as to lead the light into the light detecting portion through a back surface of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification