Patent ID: 8546764
Filing Date: 2013-10-01
Classification: H04N

Abstract:
1. An active X-ray sensing circuit for compensating and sensing the threshold voltage of transistor in one scan, the active X-ray sensing circuit comprises: a first-row pixel circuit, including a first pixel circuit and a second pixel circuit, wherein the first pixel circuit and the second pixel circuit being connected between a first scan line and a second scan line; a second-row pixel circuit, including a third pixel circuit and a fourth pixel circuit, wherein the third pixel circuit and the fourth pixel circuit being connected between a second scan line and a third scan line; a first data line, the first data line being connected to a first current source and a first amplifier; a second data line, the second data line being connected to a second current source and a second amplifier, the first pixel circuit and the third pixel circuit being connected between the first data line and the second data line; a third data line, the third data line being connected to a second current source and a second amplifier; and a fourth data line, the forth data line being connected to a third current source and a third amplifier, wherein, the second pixel circuit and the fourth pixel circuit being connected between the third data line and the fourth data line; wherein, the first-row pixel circuit conducting a reading, when the reading being completed by the first-row pixel circuit, the second-row pixel circuit conducting another reading, the first pixel circuit and the second pixel circuit of the first-row pixel circuit compensating a threshold voltage separately.