摘要:
A display device has a plurality of pixels, where each pixel includes a light emitting element, a capacitor, a driving transistor having a control terminal, an input terminal, and an output terminal and supplying a driving current to the light emitting element to emit light, a first switching unit diode-connecting the driving transistor and supplying a data voltage to the capacitor in response to a scanning signal, and a second switching unit supplying a driving voltage to the driving transistor and connecting the capacitor to the driving transistor in response to the emission signal, wherein the capacitor is connected to the driving transistor through the first switching unit, stores a control voltage depending on the data voltage and the threshold voltage of the driving transistor, and is connected to the driving transistor through the second switching unit to supply the control voltage to the driving transistor.
摘要:
A display device has a plurality of pixels, where each pixel includes a light emitting element, a capacitor, a driving transistor having a control terminal, an input terminal, and an output terminal and supplying a driving current to the light emitting element to emit light, a first switching unit diode-connecting the driving transistor and supplying a data voltage to the capacitor in response to a scanning signal, and a second switching unit supplying a driving voltage to the driving transistor and connecting the capacitor to the driving transistor in response to the emission signal, wherein the capacitor is connected to the driving transistor through the first switching unit, stores a control voltage depending on the data voltage and the threshold voltage of the driving transistor, and is connected to the driving transistor through the second switching unit to supply the control voltage to the driving transistor.
摘要:
A level shifter includes; a level conversion unit which receives a first input signal and a second input signal, wherein the second input signal is an inversion of the first input signal, and generates a first output signal having substantially a same phase of the first input signal and a voltage which is higher than the first input signal and a second output signal having substantially a same phase as the first input signal and a voltage which is lower than the first input signal; and wherein the level shifter further includes an amplifying unit which receives the first and second output signals and generates a third output signal having substantially a same phase as the first input signal and an amplitude which is greater than the first input signal.
摘要:
A pixel structure using a voltage programming type active matrix organic light emitting diode (OLED) which can minimize a current deterioration phenomenon is disclosed. The pixel structure includes a fifth TFT receiving an external management signal EMS through its gate, having a drain region connected to a cathode part of an OLED, and receiving an input of an OLED current through its source-drain current path when the OLED emits light, a fourth TFT receiving a set scan signal SCAN through its gate and having source and drain regions connected to gate and drain parts of a third TFT T3, respectively, the third TFT T3 being a current driving transistor for determining the OLED current when the OLED emits light, a capacitor C having upper and lower plates connected to the gate part of the third TFT T3 and a ground voltage VSS, respectively, a first TFT receiving the SCAN signal through its gate and transferring a data voltage to a source region of the third TFT T3, a second TFT receiving the EMS signal through its gate and connecting the lower part of the capacitor C to the source region of the third TFT T3, and a sixth TFT having source and drain regions connected to an external clock signal CLK and the gate region of the third TFT T3, respectively, and having a gate connected to the gate part of the third TFT T3. An anode part of the OLED receives a voltage VDD.
摘要翻译:公开了一种可以使电流劣化现象最小化的电压编程型有源矩阵有机发光二极管(OLED)的像素结构。 像素结构包括通过其栅极接收外部管理信号EMS的第五TFT,具有连接到OLED的阴极部分的漏极区域,并且当OLED发光时,通过其源极 - 漏极电流路径接收OLED电流的输入 ,第四TFT通过其栅极接收设置的扫描信号SCAN,并且分别具有连接到第三TFT T 3的栅极和漏极部分的源极和漏极区域,第三TFT T 3是用于确定OLED电流的电流驱动晶体管, OLED发光,具有连接到第三TFT T 3的栅极部分的上板和下板的电容器C和接地电压VSS分别通过其栅极接收SCAN信号的第一TFT并将数据电压传送到源极 区域,第二TFT通过其栅极接收EMS信号并将电容器C的下部连接到第三TFT T 3的源极区域,以及第六TFT,其具有源极和栅极 连接到外部时钟信号CLK的n个区域和第三TFT T 3的栅极区域,并且具有连接到第三TFT T 3的栅极部分的栅极。 OLED的阳极部分接收电压VDD。
摘要:
Each pixel includes: a light emitting element; a capacitor; a driving transistor that has a control terminal, an input terminal, and an output terminal and supplies a driving current to the light emitting element to emit light; a first switching unit that diode-connects the driving transistor and supplies a data voltage to the driving transistor in response to a scanning signal; and a second switching unit that supplies a driving voltage to the driving transistor and connects the light emitting element and the capacitor to the driving transistor in response to an emission signal, wherein the capacitor is connected to the driving transistor through the first switching unit, stores a control voltage being a function of the data voltage and the threshold voltage of the driving transistor, and is connected to the driving transistor through the second switching unit to supply the control voltage to the driving transistor.
摘要:
The present invention provides a novel structure of picture elements in current programming-type semiconductor devices, and in particular, the structure of picture elements of an active matrix organic light emitting diode (OLED) display. The device makes a self-compensation for OLED current deviations due to the deterioration in threshold voltage and uneven electric characteristic in thin film transistors. The invention also provides a method for driving a data driver capable of compensating for the uneven electric characteristic of thin film transistors in the driver for driving picture elements in the current programming-type active matrix OLED display device.
摘要:
The present invention provides a novel structure of picture elements in current programming-type semiconductor devices, and in particular, the structure of picture elements of an active matrix organic light emitting diode (OLED) display. The device makes a self-compensation for OLED current deviations due to the deterioration in threshold voltage and uneven electric characteristic in thin film transistors. The invention also provides a method for driving a data driver capable of compensating for the uneven electric characteristic of thin film transistors in the driver for driving picture elements in the current programming-type active matrix OLED display device.
摘要:
A touch sensor configured to be disposed in a liquid crystal display panel includes a plurality of x-axis read-out lines crossing and insulated from a plurality of y-axis read-out lines and a plurality of sensor units. Each sensor unit includes a reset unit, a capacitance detector, a first output unit, and a second output unit. The reset unit outputs a first reset signal based on a first control signal. The capacitance detector changes the first reset signal based on a variation of a cell gap of the liquid crystal display panel caused by a touch event. The first output unit changes an electric potential of a corresponding x-axis read-out line in response to the first reset signal changed in the capacitance detector. The second output unit changes an electric potential of a corresponding y-axis read-out line in response to the first reset signal changed in the capacitance detector.
摘要:
A pixel structure using a voltage programming type active matrix organic light emitting diode (OLED) which can minimize a current deterioration phenomenon. The pixel structure includes a fifth TFT receiving an external management signal EMS through its gate, having a drain region connected to a cathode part of an OLED, and receiving an input of an OLED current through its source-drain current path when the OLED emits light, a fourth TFT receiving a set scan signal SCAN through its gate and having source and drain regions connected to gate and drain parts of a third TFT T3; respectively, the third TFT T3 being a current driving transistor for determining the OLED current when the OLED emits light, a capacitor C having upper and lower plates connected to the gate part of the third TFT T3 and a ground voltage VSS.
摘要:
A display device with a touch screen includes: first sensing units, each first sensing unit comprising first optical sensors connected in series, each first sensing unit comprising a first terminal for receiving a first voltage, each first sensing unit extending in a first direction; second sensing units, each second sensing unit comprising second optical sensors connected in series, each second sensing unit comprising a first terminal for receiving a second voltage, each second sensing unit extending in a second direction transverse to the first direction; a reset unit for applying a reset voltage to a second terminal of each of the first and second sensing units; and a read-out unit for sensing a touch position based on voltage changes at the second terminals of the first and second sensing units.