Patent ID: 7663608

Claim:
A LCD panel with handwriting input apparatus comprising: a first substrate; a plurality of position-encoding pattern disposed on a bottom surface of the first substrate, the position-encoding patterns being transparent to visible light and being reflective to light of predetermined wavelengths, each position-encoding pattern representing a specific code and having a multi-layer structure including alternate low-refractive-index layers formed of Mb2O5 and high-refractive-index layers formed of SiO2; a black matrix disposed on the bottom surface of the first substrate, wherein each position-encoding pattern is interposed between the black matrix and the first substrate and is completely covered by the black matrix; a color filter layer disposed on the bottom surface of the first substrate; a second substrate formed with thin-film transistors and pixel electrodes thereon, disposed beneath the first substrate and the color filter layer; and a liquid crystal layer interposed between the first substrate and the second substrate, thereby a pen having a projector and a camera at one end thereof is adapted to generate a light beam of the predetermined wavelengths through the first substrate toward the plurality of position-encoding pattern and the camera is adapted to capture images of the plurality of position-encoding pattern.