Patent application number | Description | Published |
20080230768 | THIN FILM TRANSISTOR AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THIN FILM TRANSISTOR - The present invention relates to a thin film transistor. The thin film transistor includes a semiconductor having first, second, third, fourth, and fifth electrode regions arranged in a direction and spaced apart from each other and first, second, third, and fourth offset regions disposed between the first, second, third, fourth, and fifth electrode regions, respectively. An input electrode is connected to the third electrode region, an output electrode is connected to the first and fifth electrode regions, an insulating layer is disposed on the semiconductor, and a control electrode is disposed on the insulating layer and the second and fourth electrode regions. | 09-25-2008 |
20080230770 | ORGANIC LIGHT-EMITTING DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME - An organic light-emitting display panel having a storage capacitor comprised of a storage electrode overlapping a power line with a first gate-insulating layer disposed therebetween, wherein the storage capacitor includes a groove portion formed on a lateral side of the power line overlapping the storage electrode so that the overlapping area of the power line and the storage electrode is kept constant, and a method of manufacturing the same. | 09-25-2008 |
20080252200 | Display device and method of making display device - A display device with increased lifespan is presented. The device includes a plurality of thin film transistors, a passivation layer formed on the thin film transistors, a plurality of pixel electrodes formed on the passivation layer and electrically connected to the thin film transistors, and a wall dividing the pixel electrodes. The wall has a main section and an auxiliary section that is lower than the main section. A caved-in section is disposed between the main section and the auxiliary section. An organic layer is formed on the pixel electrodes. | 10-16-2008 |
20090021287 | Circuit and method for driving organic light emitting diode - A drive circuit for organic light emitting diodes (OLEDs), and a method for driving OLEDs, using the drive circuit. The drive circuit includes pixel circuits, each of which includes a first transistor for receiving a data voltage, and outputting a drive current to an OLED, a second transistor for transmitting the data voltage to the first transistor, a third transistor for connecting the gate and drain of the first transistor, a capacitor for storing a gate voltage of the first transistor, and a fourth transistor connected to the drain of the first transistor. The OLED is connected to the source of the first transistor by a fifth transistor, or is directly connected to the source of the first transistor without using the fifth transistor. The drive circuit generates drive current, based on a non-uniformity-compensated threshold voltage of the first transistor, thereby obtaining a uniform luminance of the OLED. | 01-22-2009 |
20090075440 | DISPLAY AND MANUFACTURING METHOD THEREOF - A display includes a substrate, a control electrode formed on the substrate, input and output electrodes formed on the substrate having facing sides facing each other with respect to the control electrode, a semiconductor layer contacting the input and the output electrodes, and an insulating layer formed between the control electrode and the semiconductor layer. At least one of the facing sides of the input and output electrodes on the semiconductor layer has a plurality of protrusions. The channel between the input and output electrodes is formed with various shapes, the length of the channel is prevented from being extending by a skew phenomenon, and the width of the channel may be extended. | 03-19-2009 |
20090135358 | DISPLAY DEVICE - A display device which includes a substrate, a gate line formed on the substrate, a data line intersecting the gate line, and a thin film transistor having a gate electrode connected to the gate line, a source electrode which overlaps the gate electrode and is connected to the data line, and a drain electrode which overlaps the gate electrode. The overlapping area between the gate electrode and the drain electrode is larger than the overlapping area between the gate electrode and the source electrode. | 05-28-2009 |
20090167743 | DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - A display device having a plurality of pixels, each pixel includes a light-emitting element, a storage capacitor, a driving transistor, a first switching transistor which supplies a data voltage to the storage capacitor in response to an on-voltage of a scanning signal, a second switching transistor which diode-connects the driving transistor in response to an on-voltage of a compensation signal, and a third switching transistor which supplies a driving voltage to the driving transistor in response to an on-voltage of a light emitting signal. The storage capacitor stores a control voltage depending on a threshold voltage of the driving transistor when the driving transistor is diode-connected, transmits the control voltage and the data voltage to the control terminal of the driving transistor, and a period in which the compensation signal is in an on-voltage state is longer than a period in which the scanning signal is in an on-voltage state. | 07-02-2009 |
20090206334 | DISPLAY SUBSTRATE, DISPLAY PANEL HAVING THE SAME, AND METHOD OF TESTING A DISPLAY SUBSTRATE - A display substrate includes a gate wire, a data wire which crosses the gate wire, a display part, a dummy pixel part and a test part. The display part includes a pixel element electrically connected to the gate wire and the data wire, and the pixel element includes a display element. The dummy pixel part surrounds the display part to protect the pixel element from static electricity. The test part is formed adjacent to the display part and includes a test element having a test display element formed in a substantially same manner as the display element. | 08-20-2009 |
20090207108 | DISPLAY SUBSTRATE AND METHOD OF MANUFACTURING THE SAME - A display substrate includes a driving element, a switching element, a gate line, a data line, a driving voltage line and an electroluminescent element. The driving element includes a driving control electrode formed from a first conductive layer, and a driving input electrode and a driving output electrode formed from a second conductive layer. The switching element includes a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode formed from a third conductive layer. The gate and data lines are formed from the second and third conductive layers, respectively. The driving voltage line is formed from the third conductive layer. Thus, misalignment between upper and lower patterns may be prevented to improve the reliability of a manufacturing process and increase an aperture ratio, thereby enhancing display quality. | 08-20-2009 |
20090256474 | DISPLAY DEVICE AND METHOD OF MAKING DISPLAY DEVICE - A display device with increased lifespan is presented. The device includes a plurality of thin film transistors, a passivation layer formed on the thin film transistors, a plurality of pixel electrodes formed on the passivation layer and electrically connected to the thin film transistors, and a wall dividing the pixel electrodes. The wall has a main section and an auxiliary section that is lower than the main section. A caved-in section is disposed between the main section and the auxiliary section. An organic layer is formed on the pixel electrodes. | 10-15-2009 |
20090278831 | DISPLAY DEVICE - Embodiments of the present invention relate to a display device. In an embodiment, the display device includes a scanning signal line for transferring a scanning signal, a data line crossing the scanning signal line and transferring a data voltage, a switching transistor connected to the scanning signal line and the data line, a driving transistor connected to the switching transistor, a first transistor connected between the driving transistor and a driving voltage terminal, and a light-emitting element connected between the driving transistor and a common voltage terminal. The first transistor operates in a saturation region, and the driving transistor operates in a linear region. In this way, display characteristics may be improved by reducing deviation of a driving current due to deviation of characteristics of a driving transistor or a driving voltage. | 11-12-2009 |
20090315870 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - The present invention relates to a display device and a driving method thereof. A display device in the present invention comprises: a capacitor connected between a first node and a second node; a switching transistor controlled by a first scanning signal and transmitting a data voltage to the first node; an emission control transistor controlled by a second scanning signal and transmitting a reference voltage to the second node; a driving transistor comprising a control terminal connected to the first node, an output terminal connected to the second node, and an input terminal; a driving control transistor controlled by a third scanning signal and transmitting a driving voltage to the input terminal of the driving transistor; and a light-emitting device connected to the second node. Accordingly, display contrast of a display device may be improved. | 12-24-2009 |
20120306730 | DISPLAY SUBSTRATE AND METHOD OF MANUFACTURING THE SAME - A display substrate includes a driving element, a switching element, a gate line, a data line, a driving voltage line and an electroluminescent element. The driving element includes a driving control electrode formed from a first conductive layer, and a driving input electrode and a driving output electrode formed from a second conductive layer. The switching element includes a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode formed from a third conductive layer. The gate and data lines are formed from the second and third conductive layers, respectively. The driving voltage line is formed from the third conductive layer. Thus, misalignment between upper and lower patterns may be prevented to improve the reliability of a manufacturing process and increase an aperture ratio, thereby enhancing display quality. | 12-06-2012 |