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US 8,013,844 B2Granted
Input and output device and terminal device for inputting data with sensation of handwriting
AssigneeNEC LCD Technologies, Ltd.
InventorsNaoyasu Ikeda, Shin-ichi Uehara, Nobuaki Takanashi
Life of this patent
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Abstract
A lenticular lens is provided in front of a liquid crystal panel composed of a plurality of pixels. In this case, the lenticular lens is arranged so that one cylindrical lens corresponds to two pixels adjacent to each other. Then, light rays outgoing from two pixels are refracted by this one cylindrical lens and intersect with each other at a point positioned on the surface of a tablet, and then reach the right eye and the left eye of a user, respectively.
Claims14
An input and output device comprising:
- a display unit including a plurality of pixel groups aligned in a matrix, each of said pixel groups having a plurality of pixels, a first pixel in said plurality of pixels in a first pixel group and a second pixel in said plurality of pixels in a second pixel group displaying identical images simultaneously, said first pixel and said second pixel positioned apart from each other via a third pixel, said third pixel being in said plurality of pixels in either the first pixel group or the second pixel group;
- a flat input unit;
- and
- an optical member which turns light outgoing from said first pixel among the pixels belonging to each of said pixel groups toward a first direction and turns light outgoing from said second pixel among said pixels belonging to each of said pixel groups toward a second direction, and a locus of a first light outgoing from said first pixel and a locus of a second light outgoing from said second pixel which are driven by the same signal intersect with each other on a front face of said flat input unit;
- wherein said flat input unit is disposed in front of said display unit and transmits light outgoing from said display unit and detects the coordinates of a contact point when said flat input unit is contacted from the front face.
2 more elements
An input and output device comprising:
- a light source for alternately emitting light in a first direction and a second direction;
- a liquid crystal panel that is disposed in front of said light source and includes a plurality of pixel groups aligned in a matrix, each of said pixel groups having a plurality of pixels, a first pixel in said plurality of pixels in a first pixel group and a second pixel in said plurality of pixels in a second pixel group displaying identical images alternately, said first pixel and said second pixel positioned apart from each other via a third pixel, said third pixel being in said plurality of pixels in either the first pixel group or the second pixel group;
- and
- a flat input unit that is disposed in front of said liquid crystal panel and transmits light outgoing from said liquid crystal panel and detects the coordinates of a contact position when said flat input unit is contacted from a front face, when said light source emits light in said first direction through an optical member, said first pixel of said liquid crystal panel which is driven by one signal transmits a light ray passing through a point of the front face of said flat input unit, and when said light source emits light in the second direction through said optical member, said second pixel of said liquid crystal panel which is driven by the same signal as said one signal transmits a light ray passing through said point of the front face of said flat input unit.
1 more element
Dependencies are inferred from the claim text.