Patent application number | Description | Published |
20100141601 | TOUCH SCREEN DISPLAY APPARATUS AND METHOD OF OPERATING THE SAME - A touch screen display apparatus is disclosed. In one embodiment, the touch screen display apparatus includes: i) a plurality of light emitting devices disposed on a substrate, ii) at least one first light sensor, iii) at least one second light sensor, wherein the at least one first light sensor is less shielded from the light emitting devices than the at least one second light sensor and iv) a light detection controller configured to: i) detect the intensity of ambient illumination, ii) selectively operate one of 1) the at least one first light sensor and 2) the at least one second light sensor based at least in part on the detected intensity and iii) detect a touch location based at least in part on light detection by the selected sensor. According to one embodiment, light may be efficiently sensed, irrespective of the external light, since an additional internal sensor (first sensor) detects the light when the amount of the external light is insufficient. | 06-10-2010 |
20110079784 | THIN FILM TRANSISTOR, METHOD OF MANUFACTURING THE THIN FILM TRANSISTOR AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING THIN FILM TRANSISTOR - Embodiments relate to a thin film transistor using an oxide semiconductor as an active layer, a method of manufacturing the thin film transistor, and an organic light emitting display device having the thin film transistor. In one embodiment, the thin film transistor includes a substrate, a first gate electrode formed over the substrate, a gate insulating layer formed over the first gate electrode and substrate and an active layer, comprising an oxide semiconductor, formed on the gate insulating layer. The transistor further includes a passivation layer formed on the active layer, source and drain electrodes formed on the passivation layer and electrically connected to the active layer and a second gate electrode formed on the passivation layer and located between the source electrode and the drain electrode. | 04-07-2011 |
20110084262 | THIN FILM TRANSISTOR, METHOD OF MANUFACTURING THE THIN FILM TRANSISTOR AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVE THE THIN FILM TRANSISTOR - A thin film transistor for an organic light emitting display device is disclosed. In one embodiment, the thin film transistor includes: a substrate, an active layer formed over the substrate, wherein the active layer is formed of an oxide semiconductor, a gate insulating layer formed over the substrate and the active layer, and source and drain electrodes formed on the gate insulating layer and electrically connected to the active layer. The transistor may further include a gate electrode formed on the gate insulating layer and formed between the source and drain electrodes, wherein the gate electrode is spaced apart from the source electrode so as to define a first offset region therebetween, and wherein the gate electrode is spaced apart from the drain electrode so as to define a second offset region therebetween. The transistor may further include a passivation layer formed on i) the gate insulating layer, ii) the source and drain electrodes and iii) the gate electrode; and at least one auxiliary gate electrode formed on the passivation layer, wherein at least a portion of the auxiliary gate electrode is located directly above the first and second offest regions. | 04-14-2011 |
20110163309 | Organic light-emitting display device and method of manufacturing the same - An organic light-emitting display device includes a substrate, a plurality of thin-film transistors on the substrate, each thin-film transistor including an active layer, a planarization layer on the thin-film transistors, a first electrode on the planarization layer and electrically connected to a thin-film transistor, and an ion blocking layer on the planarization layer, the ion blocking layer overlapping the active layer. | 07-07-2011 |
20110198584 | ORGANIC LIGHT-EMITTING DISPLAY DEVICE - An organic light-emitting display device including: a gate electrode formed on a substrate; a first insulating layer formed on the gate electrode; an active layer formed on the first insulating layer, facing the gate electrode; a second insulating layer formed on the first insulating layer, having first openings to expose the active layer; source/drain electrodes formed on the second insulating layer, so as to be connected to exposed portions of the active layer through the first openings; and a metal layer formed on the active layer and contacting the second insulating layer. | 08-18-2011 |
20110220879 | Organic light emitting display - An organic light emitting display (OLED) including a thin film transistor (TFT) including a gate electrode, an active layer, and source and drain electrodes, the active layer being insulated from the gate electrode and including an oxide semiconductor and the source and drain electrodes being insulated from the gate electrode and contacting the active layer; a first insulation layer covering the TFT; a second insulation layer on the first insulation layer, the second insulation layer being formed of amorphous silicon without doping; a pixel electrode on the second insulation layer; a third insulation layer on the second insulation layer, the third insulation layer covering an edge of the pixel electrode; an organic light emitting layer on the pixel electrode; and a facing electrode on the organic light emitting layer and the third insulation layer. | 09-15-2011 |
20110233387 | Light sensor circuit and driving method thereof - Embodiments provide a light sensor circuit for a flat panel display which improves resolution at low luminance and increases the range of sensible ambient light by divisionally driving a frame period, in which light is sensed, into a plurality of sub-frames, and a method of driving the light sensor circuit. | 09-29-2011 |
20110273419 | PIXEL CIRCUIT OF A FLAT PANEL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A pixel circuit of a flat panel display device and a method for driving thereof are provided. The pixel circuit includes a first transistor having a first gate electrode coupled to a scan line, a second electrode coupled to a data line, a second gate electrode coupled to a controlling signal line, and a first electrode, a second transistor having a first gate electrode coupled to the first electrode of the first transistor, a second electrode coupled to a first voltage source, a second gate electrode coupled to the controlling signal line, and a first electrode, a capacitor coupled between the first gate electrode of the second transistor and the first electrode of the second transistor, and an organic light emitting diode coupled between the first electrode of the second transistor and a second voltage source, in which the threshold voltage of the first and second transistors may be controlled to the required level by supplying a controlling signal of a fixed voltage level to the second gate electrodes of the first and second transistors through the controlling signal line. | 11-10-2011 |
20110303918 | ORGANIC LIGHT-EMITTING DISPLAY AND METHOD OF MANUFACTURING THE SAME - An organic light-emitting display and a method of manufacturing the display are disclosed. In one embodiment, the organic light-emitting display includes a thin film transistor comprising: i) a gate electrode, ii) an active layer electrically insulated from the gate electrode, iii) a source electrode and a drain electrode electrically insulated from the gate electrode, and contacting the active layer and iv) an insulating layer formed between i) the source and drain electrodes and ii) the active layer. The display further includes an organic light-emitting device electrically connected to the thin film transistor. In one embodiment, the source electrode comprises a first source electrode and a second source electrode that are separated from each other, and a third source electrode electrically connecting the first and second source electrodes. Moreover, the drain electrode comprises a first drain electrode and a second drain electrode that are separated from each other, and a third drain electrode electrically connecting the first and second drain electrodes. | 12-15-2011 |
20120007084 | DOUBLE GATE THIN-FILM TRANSISTOR AND OLED DISPLAY APPARATUS INCLUDING THE SAME - A double gate thin-film transistor (TFT), and an organic light-emitting diode (OLED) display apparatus including the double gate TFT, includes a double gate thin-film transistor (TFT) including: a first gate electrode on a substrate; an active layer on the first gate electrode; source and drain electrodes on the active layer; a planarization layer on the substrate and the source and drain electrodes, and having an opening corresponding to the active layer; and a second gate electrode in the opening. | 01-12-2012 |
20130240846 | TFT, DISPLAY APPARATUS INCLUDING TFT, AND ORGANIC LIGHT-EMITTING DISPLAY APPARATUS INCLUDING TFT - A thin film transistor includes a gate electrode having a first length measured in a first direction and a first width measured in a second direction, an active layer having a second length measured in the first direction and a second width measured in the second direction, the second length of the active layer being greater than the first length of the gate electrode, and the second width of the active layer being greater than the first width of the gate electrode, and a source electrode and a drain electrode that are connected to the active layer, wherein at least one of opposite side edges of the gate electrode extending in the first direction is spaced apart from a corresponding opposite side edge of the active layer extending in the first direction. | 09-19-2013 |
20140151652 | ORGANIC LIGHT-EMITTING DISPLAY DEVICE - An organic light-emitting display device includes a first electrode disposed on a substrate; a plurality of insulating layers which are sequentially disposed on the first electrode, and on which a contact hole for exposing a part of a surface of the first electrode is formed; and an organic light-emitting diode which includes a pixel electrode disposed on the plurality of insulating layers, a second electrode facing the pixel electrode and contacting the first electrode through the contact hole, and an organic emissive layer disposed between the pixel electrode and the second electrode. | 06-05-2014 |