Abstract: The present invention provides a data drive circuit of an AMOLED display device, comprising the digital to analog conversion unit (1) capable of receiving four sets of independent gamma reference voltages, and the input output buffer unit (2) electrically coupled to the digital to analog conversion unit (1). The digital to analog conversion unit (1) outputs four sets of data signals to the input output buffer unit (2) according to the received four sets of independent gamma reference voltages. The input output buffer unit (2) determines the output control signal received by the input output buffer unit (2) according to the type of the connected display panel, and thus to control the input output buffer unit (2) to output all the four sets of data signal voltages or three sets in the four sets of data signal voltages.

Abstract: The present invention provides a data drive circuit of an AMOLED display device, comprising the digital to analog conversion unit (1) capable of receiving four sets of independent gamma reference voltages, and the input output buffer unit (2) electrically coupled to the digital to analog conversion unit (1). The digital to analog conversion unit (1) outputs four sets of data signals to the input output buffer unit (2) according to the received four sets of independent gamma reference voltages. The input output buffer unit (2) determines the output control signal received by the input output buffer unit (2) according to the type of the connected display panel, and thus to control the input output buffer unit (2) to output all the four sets of data signal voltages or three sets in the four sets of data signal voltages.

Abstract: The present invention provides a method of compensating AMOLED power supply voltage drop, comprising: step 1, measuring a brightness value L of each light-emitting element line of a panel by starting from a COF end of the AMOLED; step 2, drawing a brightness variation curve of the each light-emitting element line caused by IR Drop according to the brightness value L of the each light-emitting element line measured in the step 1; step 3, calculating a voltage value for compensation of every two adjacent light-emitting elements from difference values between the brightnesses of every two adjacent light-emitting elements according to a ratio conversion between a brightness difference ?L and a voltage difference ?V, i.e.

Abstract: The invention provides a structure of AMOLED driver circuit with external compensation, disposing mutually independent detection scan driver module (2) and gate scan driver module (3), disposing data selector (MUX) for each column of pixel unit circuits (1); during frame normal display, the gate scan driver module (3) outputting normal scan driver signals (G(1)-G(n)) through all data selectors (MUX) to the gates of switch TFTs (T1) in each column of pixel unit circuits (1); during frame V-blanking, the detection scan driver module (2) making one of data selectors (MUX) to respectively output corresponding detection scan driver signals to the gates of switch TFT (T1) and detection TFT (T3) of corresponding column of pixel unit circuits (1) to perform detection and compensation on TFT or OLED stage-by-stage during AMOLED panel display duration without affecting display quality.

Abstract: The invention provides a structure of AMOLED driver circuit with external compensation, disposing mutually independent detection scan driver module (2) and gate scan driver module (3), disposing data selector (MUX) for each column of pixel unit circuits (1); during frame normal display, the gate scan driver module (3) outputting normal scan driver signals (G(1)-G(n)) through all data selectors (MUX) to the gates of switch TFTs (T1) in each column of pixel unit circuits (1); during frame V-blanking, the detection scan driver module (2) making one of data selectors (MUX) to respectively output corresponding detection scan driver signals to the gates of switch TFT (T1) and detection TFT (T3) of corresponding column of pixel unit circuits (1) to perform detection and compensation on TFT or OLED stage-by-stage during AMOLED panel display duration without affecting display quality.

Abstract: The present invention provides a method of compensating AMOLED power supply voltage drop, comprising: step 1, measuring a brightness value L of each light-emitting element line of a panel by starting from a COF end of the AMOLED; step 2, drawing a brightness variation curve of the each light-emitting element line caused by IR Drop according to the brightness value L of the each light-emitting element line measured in the step 1; step 3, calculating a voltage value for compensation of every two adjacent light-emitting elements from difference values between the brightnesses of every two adjacent light-emitting elements according to a ratio conversion between a brightness difference ?L and a voltage difference ?V, i.e.

Abstract: The present invention provides a gate driving circuit and a method thereof. The gate driving circuit comprises: a gate driving module (2 or 2?) and a plurality of multiplexer modules (4 or 4?), and the multiplexer modules (4 or 4?) are electrically connected to corresponding signal output ends (20 or 20?), and comprises a low voltage level input end (VGL or VGL?) and a first, a second, a third signal output ends (43, 44, 45 or 43?, 44?, 45?), electrically connected to a tri-gate structure panel, and the multiplexer modules (4 or 4?) control on/off of the first, the second, the third signal output ends (43, 44, 45 or 43?, 44?, 45?) and the low voltage level input end (VGL or VGL?) or the corresponding signal output ends (20 or 20?). The present invention also provides a corresponding gate driving method. The gate driving circuit and the gate driving method of the present invention can enormously reduce the amount of the tri-gate mode gate driving elements and the layout area in the panel borders.