Abstract: A color filter with low color shift is defined by a light leakage spectrum in the dark state. The color filter is disposed between two polarizing plates so as to measure a first spectrum of dark state a(?), wherein the polarizing directions of the polarizers are orthogonal to each other. A second spectrum of dark state b(?) while the color filter is removed, and then a ratio spectrum of light leakage intensity I(?)=(a(?)/b(?)) is determined. A maximum value P1 in the ratio spectrum of light leakage intensity is determined in a wavelength region in which the ratio spectrum of light leakage intensity of green photoresist overlaps that of a blue photoresist. A maximum value P2 in the ratio spectrum of light leakage intensity is determined in a wavelength region in which the ratio spectrum of light leakage intensity of red photoresist locates.

Abstract: A liquid crystal display comprising a backlight module and a liquid crystal display panel is provided. The backlight module comprises a white point source that emits a spectrum of light comprising three peaks. The liquid crystal display panel comprises a liquid crystal layer disposed between a color filter substrate, which comprises a blue filter, a green filter and a red filter, and an opposite substrate. The color filter substrate and the backlight module satisfy the following formulas: ? 555 605 ? ? BL ? ( ? ) × CF Red ? ( ? ) × ?? ? 6.0 ; ( 1 ) ? 580 630 ? ? BL ? ( ? ) × CF Green ? ( ? ) × ?? ? 3.5 ; ( 2 ) ? 505 580 ? ? BL ? ( ? ) × CF Blue ? ( ? ) × ?? ? 3.5 . ( 3 ) Herein, the backlight module has the maximum luminance in one wavelength, with the maximum luminance being set at 1.0. BL (?) represents the normalized luminance spectrum at each wavelength.

Abstract: A position encoded sensing device having a display panel, a light guiding layer disposed on the display panel. The light guiding layer is configured to have encoded information therein. In addition, the position encoded sensing device includes a transceiver for detecting light and the encoded information that are guided out of the light guiding layer.

Abstract: A position encoded sensing device having a display panel, and a reflective plate having encoded information thereon. The reflective plate is disposed within the display panel. In addition, the position encoded sensing device includes a transceiver for emitting and receiving light. The transceiver transmits light onto the reflective plate, and the transceiver receives reflected light containing the encoded information from the reflective plate.

Abstract: A handwriting input apparatus comprises a position-encoding layer and a pen. The position-encoding layer comprises a plurality of position-encoding pattern. The position-encoding layer is transparent to visible light and is reflective to light of predetermined wavelengths. Each position-encoding pattern represents a specific code. The pen has a projector and a camera at one end. The projector is adapted to generate a light beam of the predetermined wavelengths toward the position-encoding layer. The camera is adapted to capture images of the plurality of position-encoding pattern.

Abstract: A position encoded sensing device having a display panel, a light guiding layer disposed on the display panel. The light guiding layer is configured to have encoded information therein. In addition, the position encoded sensing device includes a transceiver for detecting light and the encoded information that are guided out of the light guiding layer.

Abstract: A display panel for amplifying light reflection intensity. The display includes a substrate, at least one protrusion on one face of the substrate, and a light reflective layer deposited on the at least one protrusion. The at least one protrusion amplifies light reflection intensity when light is reflect off the light reflective layer.

Abstract: A position encoded sensing device having a display panel, and a reflective plate having encoded information thereon. The reflective plate is disposed within the display panel. In addition, the position encoded sensing device includes a transceiver for emitting and receiving light. The transceiver transmits light onto the reflective plate, and the transceiver receives reflected light containing the encoded information from the reflective plate.