Display substrate, method of manufacturing the same and touch display apparatus having the same

摘要

A display substrate includes a pixel switching element, a pixel electrode, a reference line, a control switching element, a bias line, a light sensing element, a sensing capacitor and a light blocking filter pattern. The pixel switching element is connected to a data line and a gate line, includes a first semiconductor pattern. The pixel electrode is connected to the pixel switching element. The reference line is in parallel with the data line. The control switching element is connected to the reference line and the gate line, includes a second semiconductor pattern. The bias line is in parallel with the gate line. The light sensing element is connected to the bias line and the control switching element, includes a third semiconductor pattern. The sensing capacitor is connected to the light sensing element and a storage line. The light blocking filter pattern transmits a first light, and blocks a second light.

主权项

1. A display substrate comprising:
a pixel switching element connected to a respective elongated data line and to a respective elongated gate line which crosses with the data line, where the gate line, data line and pixel switching element are formed on a base substrate and where the pixel switching element includes a first semiconductor pattern; a pixel electrode electrically connected to the pixel switching element; a reference line extending parallel with the data line; a control switching element connected to the reference line and to the gate line, and including a second semiconductor pattern; a bias line extending parallel with the gate line; a light sensing element connected to the bias line and the control switching element, and including a third semiconductor pattern; an electrically conductive band pass filter formed substantially on top of the third semiconductor pattern and structured to selectively transmit a prespecified infrared wavelength to the third semiconductor pattern; and a sensing capacitor connected to the light sensing element and to a storage line.