3 results about "Pixel based" patented technology

An organic light emitting device includes a display panel which includes a plurality of pixels, a power supply which generates a driving voltage, an overcurrent detector which detects an overcurrent flowing from the power supply to the display panel, and a driving voltage blocking unit which blocks the driving voltage to the plurality of pixels based on an output signal of the overcurrent detector.

The invention provides a display panel, a method for testing bad pixels of the display panel and a display device, and belongs to the technical field of display. A test element group in the display panel comprises three test circuits, namely a first test circuit, a second test circuit and a third test circuit. Wherein the first test circuit and the second test circuit are both coupled with the third test circuit to control the third test circuit to generate a first test signal, the first test signal can form a second test signal through the second test circuit, and the second test signal is transmitted to the test equipment through the test probe. Therefore, the structure of each test circuit included in the test element group can be flexibly set based on the structure of the pixel circuit, so that the second test signal output to the test equipment by the test element group is close to the driving signal output to the light-emitting element by the pixel circuit; therefore, the test device can reliably determine whether the pixel circuit is abnormal based on the second test signal. That is, the reliability of testing the bad pixels in the display panel by using the test element group is good.