Touch sensing and remote sensing optical touch screen apparatuses

摘要

Optical touch screen apparatuses with remote sensing and touch sensing by using a light sensor transistor including an oxide semiconductor transistor. The optical touch screen apparatus includes a pixel array of a plurality of sensing pixels arranged in a plurality of rows and a plurality of columns. Each of the sensing pixels includes a light sensing pixel for sensing light that is irradiated by an external light source and a touch sensing pixel for sensing display light that is reflected by a screen touch. The light sensing pixel includes a first light sensor transistor and a first switch transistor connected each other in series, and the touch sensing pixel includes a second light sensor transistor and a second switch transistor connected each other in series.

主权项

1. An optical touch screen apparatus, comprising:
a plurality of sensing pixels in a plurality of rows and a plurality of columns, each of the sensing pixels including a light sensing pixel configured to sense light, the light sensing pixel including a first light sensor transistor and a first switch transistor connected in series, and a touch sensing pixel configured to sense light, the touch sensing pixel including a second light sensor transistor and a second switch transistor connected in series, wherein each of the light sensing pixels is configured to sense light received from an external light source, and each of the touch sensing pixels is configured to sense light reflected by a screen touch object.