TOUCH-SENSING QUANTUM DOT LCD PANEL

摘要

A touch-sensing display panel comprising: an LCD unit including a backlight unit and a plurality of image-forming pixel elements arranged in a central region; a light emitter emulated by passing light through a pixel element of a first selected portion of a peripheral region of the LCD unit, said emitter including a first quantum dot structure connected to receive excitation light from said backlight unit so as to emit light at longer wavelength than said excitation light; a planar light guide having a front surface forming a touch-sensing region and an opposite rear surface facing the LCD unit, said light guide being connected to receive emitter light for propagation therein through total internal reflection; a light detector connected to receive light from the light guide.

主权项

1. A touch-sensing display panel, comprising:
a liquid crystal display (“LCD”) unit including a backlight unit and a plurality of image-forming pixel elements arranged in a central region; a light emitter comprising a pixel element of a first selected portion of a peripheral region of the LCD unit, said light emitter including a first quantum dot structure configured to receive excitation light from said backlight unit and emit light at a wavelength longer than said excitation light through the pixel element; a planar light guide comprising a front surface forming a touch-sensing region and an opposite rear surface facing the LCD unit, said planar light guide configured to receive the emitted light from the light emitter for propagation in the planar light guide through total internal reflection; and a light detector configured to receive light from the planar light guide.