Liquid crystal display with infrared detection layer and remote control display system with same
View Patent ↗An exemplary liquid crystal display includes a thin film transistor (TFT) substrate, a color filter substrate opposite to the TFT substrate, and a liquid crystal layer sandwiched between the TFT substrate. The color filter substrate includes a plurality of color units and a first infrared detection layer arranged between the color units. The first infrared detection layer is configured to detect infrared light beams irradiating thereon and determine an irradiated position thereof. A remote control display system employing the liquid crystal display is also provided.
1. A liquid crystal display, comprising:
a thin film transistor (TFT) substrate;
a color filter substrate opposite to the TFT substrate; and
a liquid crystal sandwiched between the TFT substrate;
wherein the color filter substrate comprises a plurality of color units and a first infrared detection layer arranged between the color units, and the first infrared detection layer comprising a plurality of P-areas, N-areas, and PN-junctions formed between the adjacent P-areas and N-areas, a plurality of first buses parallel to each other and extending along the first direction, a plurality of second buses parallel to each other and extending along the second direction perpendicular to the first direction, a plurality of first leads and a plurality of second leads;
wherein, when the P-areas and the N-areas are irradiated by infrared light beams, photogenic charge carriers are generated and result in a measurable voltage, and an irradiated position of the first infrared detection layer where the first infrared beams irradiate on is determined according to the measurable voltage;
wherein, the first infrared detection layer surrounds each of the color units, thereby defining a plurality of detection blocks, and in each detection block, each first lead connected to a corresponding one of the P-areas and a corresponding one of the first buses, and each second lead connected to a corresponding one of the N-areas and a corresponding one of the second buses.
2. The liquid crystal display of claim 1 , wherein the color filter substrate further comprising a black matrix layer covering the first infrared detection layer, the first buses, the second buses, the first leads, and the second leads.
3. The liquid crystal display of claim 2 , wherein when a position of the first infrared detection layer is irradiated by infrared light beams, corresponding PN-junctions formed between the adjacent P-areas and N-areas at the position of the first infrared detection layer detects the infrared light beams and generate photogenic charge carries on the corresponding PN-junctions, so that a voltage applied to corresponding first buses increases, and a voltage applied to corresponding second buses decreases.
4. A remote control display system, comprising:
an infrared light beams generator configured for providing infrared light beams; and
a liquid crystal display comprising:
a TFT substrate;
a color filter substrate opposite to the TFT substrate; and
a liquid crystal layer sandwiched between the TFT substrate;
wherein the color filter substrate comprises a plurality of color units and a first infrared detection layer arranged between the color units, and the first infrared detection layer comprising a plurality of P-areas, N-areas, and PN-junctions formed between the adjacent P-areas and N-areas, a plurality of first buses parallel to each other and extending along the first direction, a plurality of second buses parallel to each other and extending along the second direction perpendicular to the first direction, a plurality of first leads and a plurality of second leads;
wherein, when the P-areas and the N-areas are irradiated by infrared light beams, photogenic charge carriers are generated and result in a measurable voltage, and an irradiated position of the first infrared detection layer where the first infrared beams irradiate on is determined according to the measurable voltage;
wherein, the first infrared detection layer surrounds each of the color units, thereby defining a plurality of detection blocks, and in each detection block, each first lead connected to a corresponding one of the P-areas and a corresponding one of the first buses, and each second lead connected to a corresponding one of the N-areas and a corresponding one of the second buses.
5. The remote control display system of claim 4 , wherein the infrared light beams generator further provides visible light beams for irradiating the first infrared detection layer to provide a visual guide before the infrared light beams irradiate the first infrared detection layer.
6. The remote control display system of claim 4 , wherein the color filter substrate further comprising a black matrix layer covering the first infrared detection layer, the first buses, the second buses, the first leads, and the second leads.
7. The remote control display system of claim 6 , wherein when a position of the first infrared detection layer is irradiated by infrared light beams, corresponding PN-junctions formed between the adjacent P-areas and N-areas at the position of the first infrared detection layer detects the infrared light beams and generate photogenic charge carries on the corresponding PN-junctions, so that a voltage applied to corresponding first buses increases, and a voltage applied to corresponding second buses decreases.
8. The remote control display system of claim 4 , wherein in each detection block, the first infrared detection later comprises two sections parallel to each other and extending along the second direction so as to form a structure to surround a corresponding one of the color units.