Abstract: A mobile terminal and sound pressure control method using sound saturation sensing are disclosed. The mobile terminal has a target digital value of an adequate output sound pressure level at a maximum volume level. The sound pressure control method includes: determining a digital value corresponding to a maximum output sound pressure level of an externally sourced audio material, wherein the externally sourced audio material is being replayed for the first time at a preset gain at the maximum volume level; comparing the determined digital value with the target digital value; adjusting, if the determined digital value is not equal to the target digital value, the gain so that a digital value corresponding to the adjusted gain is equal to the target digital value; and storing the adjusted gain as a gain value associated with the maximum volume level for the externally sourced audio material.

Abstract: Disclosed is an active pixel sensor array, which can reduce the number of elements and the size of capacitors by enabling a reset switching transistor to include a function of an optical sensor and to reset a pixel voltage with a power supply voltage VDD after a gate selection signal is outputted, and to reset a pixel voltage with a power supply voltage VDD by a coupling function in case that a gate selection signal is outputted.

Abstract: The present invention relates to a switching mode power supply and a driving method thereof. In the present invention, a supply voltage is generated by using a start voltage that corresponds to input power, and a switching operation frequency of a power switch is changed according to an increase/decrease of the supply voltage.

Abstract: Disclosed is a method for fabricating a thin film transistor. Specifically, the method uses local oxidation wherein a portion of a transparent metal oxide layer is locally oxidized to be converted into a semiconductor layer so that the oxidized portion of the transparent metal oxide layer can be used as a channel region and the unoxidized portions of the transparent metal oxide layer can be used as source and drain electrodes. The method comprises the steps of forming a gate electrode on a substrate and forming a gate insulating layer thereon, forming a transparent metal oxide layer on the gate insulating layer, forming an oxidation barrier layer on the transparent metal oxide layer in such a manner that a portion of the transparent metal oxide layer positioned over the gate electrode is exposed, and locally oxidizing only the exposed portion of the transparent metal oxide layer to convert the exposed portion into a semiconductor layer.

Abstract: Disclosed is a method for fabricating a thin film transistor. Specifically, the method uses local oxidation wherein a portion of a transparent metal oxide layer is locally oxidized to be converted into a semiconductor layer so that the oxidized portion of the transparent metal oxide layer can be used as a channel region and the unoxidized portions of the transparent metal oxide layer can be used as source and drain electrodes. The method comprises the steps of forming a gate electrode on a substrate and forming a gate insulating layer thereon, forming a transparent metal oxide layer on the gate insulating layer, forming an oxidation barrier layer on the transparent metal oxide layer in such a manner that a portion of the transparent metal oxide layer positioned over the gate electrode is exposed, and locally oxidizing only the exposed portion of the transparent metal oxide layer to convert the exposed portion into a semiconductor layer.

Abstract: A mobile terminal and sound pressure control method using sound saturation sensing are disclosed. The mobile terminal has a target digital value of an adequate output sound pressure level at a maximum volume level. The sound pressure control method includes: determining a digital value corresponding to a maximum output sound pressure level of an externally sourced audio material, wherein the externally sourced audio material is being replayed for the first time at a preset gain at the maximum volume level; comparing the determined digital value with the target digital value; adjusting, if the determined digital value is not equal to the target digital value, the gain so that a digital value corresponding to the adjusted gain is equal to the target digital value; and storing the adjusted gain as a gain value associated with the maximum volume level for the externally sourced audio material.

Abstract: Disclosed is an apparatus and method for driving a plurality of displays in a computer system. The apparatus can include a checking circuit for checking inherent control information of the displays, and an output circuit for confirming a brightness control information corresponding to the inherent control information of the checked display among preset brightness control information to output an information to control the display at a brightness of the corresponding display. A conversion circuit can supply an information to drive a corresponding display based on the output information of the output circuit.

Abstract: Unevenness detecting apparatus for compensating for threshold voltage and method thereof is provided with a plurality of scan lines and a plurality of data lines and a pixel circuit arranged in each point which the scan lines and the data lines are intersected. The unevenness detecting apparatus for compensating for the threshold voltage and method thereof may accurately sense a state of minute unevenness such as fingerprints by using an active element (e.g., TFT) as an element of which pixel circuit is composed.

Abstract: Disclosed are an Organic Light Emitting Diode (OLED) display device having a pixel circuit which use a thin film transistor (TFT) as an active device and a driving method thereof. The OLED display device can constantly obtain luminance of the light emitting elements by elapsed time, because the brightness of the pixel for the signal voltage is not varied by a characteristic variance of the transistor (e.g., a driving element) and the OLED. Accordingly, the OLED display device according to the present invention can minimizes the variance of the pixel brightness due to deterioration of the transistor and the OLED caused by usage for a long time and increase life span of the display device. Further, the OLED display device can display high quality of the image even in case of the high precision display, because it is controlled to flow the current to OLED included in each pixel.

Abstract: Disclosed is an active pixel sensor array, which can reduce the number of elements and the size of capacitors by enabling a reset switching transistor to include a function of an optical sensor and to reset a pixel voltage with a power supply voltage VDD after a gate selection signal is outputted, and to reset a pixel voltage with a power supply voltage VDD by a coupling function in case that a gate selection signal is outputted.

Abstract: A backlight control device and method of an LCD can reduce or minimize the battery usage by a backlight lamp while maintaining the brightness of a reflective LCD at an adequate level by operating backlight control using intensity of detected surrounding light within a selected control range from a plurality of backlight control ranges. The backlight control ranges can vary in number but are directed into various levels, according to the intensity of surrounding light and use of a battery or an external power source.

Abstract: Disclosed is an apparatus and method for driving a plurality of displays in a computer system. The apparatus can include a checking circuit for checking inherent control information of the displays, and an output circuit for confirming a brightness control information corresponding to the inherent control information of the checked display among preset brightness control information to output an information to control the display at a brightness of the corresponding display. A conversion circuit can supply an information to drive a corresponding display based on the output information of the output circuit.

Abstract: A backlight control device and method of an LCD can reduce or minimize the battery usage by a backlight lamp while maintaining the brightness of a reflective LCD at an adequate level by operating backlight control using intensity of detected surrounding light within a selected control range from a plurality of backlight control ranges. The backlight control ranges can vary in number but are directed into various levels, according to the intensity of surrounding light and use of a battery or an external power source.