Patent application number | Description | Published |
20100013811 | PHOTO SENSOR AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A photo sensor capable of reducing the distortion of signals output from the photo sensor to output a correct measured value and an organic light emitting display using the same. The organic light emitting display includes a pixel unit formed on a transparent substrate to display an image in response to scan signals and data signals, a scan driver generating the scan signals to transmit the scan signals to the pixel unit, a data driver generating the data signals to transmit the data signals to the pixel unit, and a photo sensor including a sensing unit sensing brightness of ambient light to output a sensing signal and a control unit for receiving the sensing signal to output a brightness control signal for controlling brightness of the image. The sensing unit disposed in a predetermined region of the transparent substrate and includes a first photo diode receiving a first driving power source to generate optical current so that a magnitude of the optical current is controlled in response to the brightness of the ambient light, a first capacitor for storing the optical current, and a first switch coupled between the first driving power source and the first photo diode to perform a switching operation. | 01-21-2010 |
20100096997 | Light sensing circuit and flat panel display including the same - A light sensing circuit for use in auto brightness control (ABC), and a flat panel display including the light sensing circuit. The light sensing circuit includes a first photodiode; a second photodiode which is electrically connected to the first photodiode and includes a shielding film for shielding externally incident light; a first voltage fixing unit which is connected to the first photodiode and the second photodiode and maintains a voltage applied to the first photodiode at a certain value; and an analog-to-digital converter (ADC) which generates a digital value that depends on a current flowing in the first photodiode and the second photodiode. Accordingly, the light sensing circuit can precisely sense the brightness of a surrounding environment and drive a flat panel display with the most suitable brightness. | 04-22-2010 |
20100097334 | LIGHT SENSING CIRCUIT, METHOD OF DRIVING THE SAME, AND TOUCH PANEL INCLUDING THE LIGHT SENSING CIRCUIT - A light sensing circuit, a method of driving the same, and a touch panel including the light sensing circuit, the light sensing circuit including a photodiode generating current according to the brightness of light incident from the outside; a driving transistor having a first electrode to which a first power voltage is applied, a second electrode, and a gate electrode electrically connected to a cathode of the photodiode; a first reset transistor having a first electrode to which an initialization voltage is applied, a second electrode connected to the gate electrode of the driving transistor, and a gate electrode to which a previous scan signal is applied; and a shielding capacitor disposed between the gate electrode of the driving transistor and the cathode of the photodiode. Accordingly, the brightness of light incident on the photodiode can be accurately determined by initializing the cathode of the photodiode by using a constant voltage. | 04-22-2010 |
20100097350 | PHOTO SENSING DEVICE, PHOTO SENSING CIRCUIT, TOUCH PANEL, AND METHOD OF SENSING OUTPUT VALUE OF PHOTO SENSING ELEMENT - A photo sensing device, a photo sensing circuit, a touch panel, and a method of sensing an output value of a photo sensing element, in order to remove the influence of a threshold voltage. The device includes a photo sensing unit generating a sensing current according to an intensity of incident light, a driving unit outputting a driving current according to the sensing current generated by the photo sensing unit, and a scanning unit outputting on a data line the driving current of the driving unit in a first mode corresponding to the photo sensing unit gathering light for a predetermined period of time and outputting the driving current in a second mode corresponding to the photo sensing unit initializing. | 04-22-2010 |
20100097354 | LIGHT SENSING CIRCUIT, TOUCH PANEL INCLUDING THE SAME, AND METHOD OF DRIVING THE LIGHT SENSING CIRCUIT - A light sensing circuit of a touch panel includes a photodiode including an anode and a cathode; a driving transistor including a gate electrode connected to the cathode of the photodiode, a first electrode to receive a first ground voltage, and a second electrode; a first switching transistor including a first electrode connected to the second electrode of the driving transistor, a second electrode to output a data signal, and a gate electrode to receive a scan signal; a first capacitor including a first terminal connected to the cathode of the photodiode, and a second terminal; and a voltage compensating unit to apply a compensation voltage to the second terminal of the first capacitor. | 04-22-2010 |
20100220069 | Light sensing circuit, method of controlling the same, and touch panel comprising the light sensing circuit - A light sensing circuit, a method of controlling the same, and a touch panel including the light sensing circuit. In the method of controlling the light sensing circuit, including sensing light incident on a photodiode, generating current corresponding to the brightness of the sensed light, amplifying the current using a driving transistor, and outputting the amplified current, the ambient temperature is sensed, and a time period during which the light is sensed by the photodiode or the amplified current is output is controlled by the sensed ambient temperature. Thus, the sensitivity of the light sensing circuit may be constantly maintained without being influenced by the ambient temperature. | 09-02-2010 |
20110001711 | LIGHT SENSING CIRCUIT, TOUCH PANEL INCLUDING THE SAME, AND METHOD OF DRIVING THE SAME - A light sensing circuit includes a photodiode including a cathode electrode and an anode electrode and for receiving light from the outside and generating a current corresponding to the received light, a driving transistor for amplifying the current generated in the photodiode, a capacitor for storing a first initiation voltage transmitted to the driving transistor, a first switching transistor for compensating for a threshold voltage of the driving transistor corresponding to a current scan signal, and a second switching transistor for transmitting the first initiation voltage corresponding to the current scan signal. | 01-06-2011 |
20110050600 | Light sensor circuit and driving method thereof and touch screen panel having the same - A light sensor circuit, includes a light receiving element coupled to a first power supply, a capacitor coupled between the light receiving element and a second power supply, a first transistor including a gate electrode coupled to a first electrode of the capacitor, and a second transistor including a gate electrode coupled to a selection signal line, wherein the first transistor is coupled between the selection signal line and a first electrode of the second transistor, and the second transistor is coupled between a second electrode of the first transistor and an output signal line. | 03-03-2011 |
20110050625 | TOUCH SCREEN PANEL AND FABRICATION METHOD THEREOF - A touch screen panel includes first and second sense cells on a same layer and coupling patterns that couple adjacent ones of the first sense cells and adjacent ones of the second sense cells to each other, respectively. The coupling patterns do not cross with each other, thereby improving the ability of the coupling patterns to withstand static electricity. A dummy line formed of a same material as the sense cells may be formed between the first and second sense cells, and the dummy line is electrically coupled to a guard ring located in an area outside of a display area of the touch screen panel, making it possible to overcome the effects of static electricity applied to the front surface of the touch screen panel as well as the side surface thereof. | 03-03-2011 |
20110057892 | Flat panel display integrated with touch screen panel - A flat panel display integrated with a touch screen panel comprises a lower substrate, an upper substrate having a display area and first and second non-display areas corresponding to a display area, first and second non-display areas of the lower substrate, respectively, sense patterns on the display area of the upper substrate, sense lines on the first non-display area of the upper substrate, metal patterns on areas between the sense lines and on an outer side of the sense lines, pixels on the display area of the lower substrate, a driving circuit configured to drive the pixels, and sealant disposed on the second non-display area of the lower substrate so as to bond the upper substrate to the lower substrate. The first and second non-display areas of the lower substrate are outside the display area. The driving circuit is on the first non-display area of the lower substrate. | 03-10-2011 |
20110057893 | Touch screen panel - A touch screen panel comprises a glass substrate having a display area and a non-display area, a plurality of sense patterns on the display area, a plurality of metal pads on a periphery of the display area and on the non-display area, a plurality of sense lines on the non-display area, and dummy patterns on an area between the plurality of sense lines on the non-display area. The non-display area is outside a periphery of the display area. Each of the plurality of the sense lines is coupled to one of the plurality of metal pads. The display area and non-display area of the glass substrate respectively correspond to a display area and non-display area of an image display device to which the touch screen panel is provided. | 03-10-2011 |
20110084958 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display is capable of reducing power consumption. The organic light emitting display includes a scan driver for sequentially supplying scan signals to scan lines, a data driver for supplying data signals to data lines in synchronization with the scan signals, pixels located at crossing regions of the scan lines and the data lines, a timing controller for determining a normal driving mode for displaying a normal image and a standby driving mode displaying less information than the normal image, and a power source for supplying a first power and a second power to the pixels, wherein a voltage difference between the first power and the second power in the normal driving mode is a first voltage, and a voltage difference between the first power and the second power is a second voltage different from the first voltage. | 04-14-2011 |
20110102391 | ILLUMINATION SENSING DEVICE HAVING A REFERENCE VOLTAGE SETTING APPARATUS AND A DISPLAY DEVICE INCLUDING THE ILLUMINATION SENSING DEVICE - A reference voltage setting apparatus including: a current generator having a first device to supply a first dark current and a second device to supply a second dark current; a first operational amplifying unit connected to the current generator; and a voltage setting unit connected to the first operational amplifying unit and setting a reference voltage having a compensated offset voltage of the first operational amplifying unit, and an illumination sensing device and a display device including the reference voltage setting apparatus. | 05-05-2011 |
20110122087 | TOUCH SCREEN SYSTEM AND METHOD OF DRIVING THE SAME - A touch screen system includes a touch screen panel which includes driving lines, sensing lines crossing the driving lines, and sensing cells formed at crossing regions of the driving lines and the sensing lines; a driving circuit for sequentially applying driving signals to the driving lines; a sensing circuit for detecting first sensing signals in accordance with changes in mutual capacitances of the sensing cells to generate second sensing signals corresponding to the changes; a processor for determining a touch position based on the second sensing signals from the sensing circuit; and an active stylus separated from the touch screen panel and configured to output an active stylus electric field in synchronization with a driving signal of the driving signals applied to a driving line coupled to a sensing cell of the sensing cells adjacent to the active stylus when the active stylus approaches or contacts the touch screen panel. | 05-26-2011 |
20110134056 | Flat panel display integrated with touch screen panel - A FPD integrated with a touch screen panel includes an upper substrate and a lower substrate facing each other, the upper substrate including a display region and first and second non-display regions surrounding the display region, a plurality of sensing patterns on the display region of the upper substrate, a plurality of sensing lines on the first non-display region of the upper substrate, a sealing material on the second non-display region of the upper substrate, the sealing material connecting the upper and lower substrates, and a flexible printed circuit (FPC) bonding pad unit on the second non-display region of the upper substrate, the FPC bonding pad unit including a plurality of bonding pads coupled to the plurality of sensing lines, the bonding pads including a transparent conductive material in regions overlapping the sealing material. | 06-09-2011 |
20110207055 | FABRICATING METHOD FOR TOUCH SCREEN PANEL - In a fabricating method of a touch screen panel, a conductive layer and an insulating layer are sequentially formed on a same surface of a transparent substrate. The conductive layer and the insulating layer are co-patterned using a halftone mask to form first connection patterns having separated patterns and the insulating layer being patterned on the first connection patterns to expose regions of the first connection patterns. A transparent electrode layer is formed on the transparent substrate having the first connection patterns and the insulating layer. The transparent electrode layer is patterned to form first sensing patterns connected to the first connection patterns through the exposed regions of the first connection patterns and connected along a first direction, and to form second sensing patterns disposed between the first sensing patterns, wherein the second sensing patterns are insulated from the first sensing patterns and connected along a second direction. | 08-25-2011 |
20110221698 | Touch screen panel - A capacitive touch screen panel including a plurality of first sensing patterns connected along a long-side direction of a screen; and a plurality of second sensing patterns connected along a short-side direction of the screen, wherein an area of each of the first sensing patterns is smaller than an area of each of the second sensing patterns. | 09-15-2011 |
20110227888 | FLAT PANEL DISPLAY - A flat panel display including a first substrate comprising an emission region and a non-emission region, a light emission unit on the emission region, a first sensing unit on the non-emission region, and a second sensing unit on the non-emission region, wherein the first and second sensing units are arranged to allow determination of a tilt angle of the flat panel display using light intensities measured by the first and second sensing units. | 09-22-2011 |
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 |
20110234512 | TOUCH SCREEN PANEL - A touch screen panel includes: a flat panel display including an upper substrate, a lower substrate, and pixels arranged on a display region of the lower substrate in a stripe arrangement; first sensing cells arranged in a first direction on the upper substrate and second sensing cells arranged in a second direction on the upper substrate; first connection patterns electrically connecting adjacent ones of the first sensing cells to each other in the first direction, and second connection patterns electrically connecting adjacent ones of the second sensing cells to each other in the second direction, wherein at least one of the first connection patterns and the second connection patterns is inclined so that it partially overlaps with the pixels. | 09-29-2011 |
20120062481 | FLAT PANEL DISPLAY WITH INTEGRATED TOUCH SCREEN PANEL - A flat panel display having an integrated touch screen panel directly formed on a sealing thin film is disclosed. In the display, sensing lines of the touch screen panel are formed to extend to a substrate of the display panel, on which organic light emitting elements are formed, so that the touch screen panel and the display panel are connected to a flexible printed circuit board, thereby simplifying manufacturing processes and decreasing product cost. | 03-15-2012 |
20120113168 | Stereoscopic image display device and driving method thereof - A stereoscopic image display device includes a scan driver, a data driver, a light emission control driver, a display unit including a plurality of pixels, and a controller controlling the scan driver, the data driver, and the light emission control driver. The controller generates image data signals corresponding to a left-eye image display period, a right-eye image display period, and a black image display period during one frame and supplies the image data signals to the data driver. The black image display period, in which a black image according to the black data signal is displayed, and a shutter stabilization period, in which a left eye glass and a right eye glass of shutter spectacles are opened/closed, overlap each other between the left-eye image display period and the right-eye image display period. | 05-10-2012 |
20120229416 | ELECTROSTATIC CAPACITY TYPE TOUCH SCREEN - An electrostatic capacity type touch screen included in an image display apparatus is provided. The electrostatic capacity type touch screen includes an active touch region on a screen divided into a plurality of regions and a plurality of conductive sensing patterns formed in the divided regions to detect capacitance. Coupling of the conductive sensing patterns among the divided regions is broken. | 09-13-2012 |
20130207940 | DISPLAY DEVICE AND DRIVING METHOD FOR THE SAME - A display device is disclosed. In one aspect, the display device includes a display panel for displaying an image in at least two separate fields during a frame, a panel driver configured to transmit output data for each field corresponding to the at least two fields and drive the display panel according to each field, and a controller configured to analyze an image pattern corresponding to input data, and generate the output data for each field from the input data according to an analysis result of the pattern, or extract each field data from the input data according to a predetermined data alignment method and generate the output data for each field by using the field data. | 08-15-2013 |
20130208019 | DISPLAY DEVICE AND MEMORY ARRANGING METHOD FOR IMAGE DATA THEREOF - A display device and an image data memory arrangement method thereof are disclosed. When driving one frame with first and second fields, an input data signal is divided into first and second field data and the first and second field data are respectively arranged according to a light emitting driving sequence to control the light emitting for each field to be displayed. The first and second field data signals respectively include a color data signal pattern in which the data signals transmitted to the pixels corresponding to the same pixel column among the pixels respectively included in the first pixel row and the fourth pixel row display the same color, and the data signals transmitted to the pixels corresponding to the same pixel column among the pixels respectively included in the second pixel row and the third pixel row display the same color. | 08-15-2013 |
20130208021 | DISPLAY DEVICE AND ARRANGING METHOD FOR IMAGE DATA THEREOF - A display device including a display panel having first pixels emitting light in a first field and second pixels emitting light in a second field is disclosed. According to one aspect, the display device includes a controller configured to extract first field data transmitted to the first pixels and second field data transmitted to the second pixels from input data, divide the first field data, insert black data between two neighboring first field data to generate first output data, divide the second field data, and insert black data between two neighboring second field data to generate second output data. The display device also includes a data driver configured to transmit a first data signal based on the first output data to the display panel in the first field and transmitting a second data signal based on the second output data to the display panel in the second field. | 08-15-2013 |
20130334503 | ORGANIC LIGHT-EMITTING DISPLAY APPARATUS - An organic light-emitting display apparatus includes a plurality of first emission units, each including a first organic light-emitting device configured to emit light in at least a first direction and through a first display surface, a plurality of second emission units, each including a second organic light-emitting device configured to emit in a second direction opposite to the first direction and through a second display surface. The first emission units and the second emission units are alternately disposed. The apparatus further includes a transmissive area disposed adjacent to but not overlapping with the plurality of first emission units and the plurality of second emission units when viewed from a direction perpendicular to the first display surface, and capable of transmitting external light through the first and second display surfaces in the transmissive area. | 12-19-2013 |
20150022508 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - Artifacts in a specific pattern due to a time difference in a VTDC driving scheme may be prevented. A display device includes: a display including a first pixel circuit, a second pixel circuit, and a pixel group having a first light emitting element, a second light emitting element, a third light emitting element and a fourth light emitting element arranged in a first direction; and a light emission driver generating a first sub-light-emission control signal for controlling emission of the first light emitting element and a second sub-light-emission control signal for controlling emission of the second light emitting element in a first subframe, and generating a third sub-light-emission control signal for controlling emission of the third light emitting element and a fourth sub-light-emission control signal for controlling emission of the fourth light emitting element in a second subframe. | 01-22-2015 |
20150049125 | PIXEL, PIXEL DRIVING METHOD, AND DISPLAY DEVICE INCLUDING THE PIXEL - A pixel includes a switching transistor connected to a data line, a first circuit to control compensation of a first driving transistor, and a second circuit to control compensation of a second driving transistor. The first and second circuits are connected to the switching transistor. The first and second transistors are connected to respective organic light emitting diodes of a same pixel. Compensation of the first and second driving transistors is based on respective first and second subscan signals, which overlap periods of corresponding common scan signals to be received by the switching transistor. | 02-19-2015 |