Abstract: A casting method for forming a fastening part on an inclined plane of a casting may include mounting a plug unit including a casting plug and a screw thread insert combined with the casting plug on a movable mold or a fixed mold; performing casting by moving and combining the movable mold with the fixed mold and injecting a molten metal into a cavity formed between the movable mold and the fixed mold; performing mold opening after the casting; and separating the casting plug from the screw thread insert, wherein when the plug unit is mounted on the mold, the screw thread insert is deployed in the cavity, and a mold plane on which the casting plug is mounted forms an inclined plane having an acute angle against a horizontal plane that is parallel to a movement direction of the movable mold.

Abstract: A casting method for forming a fastening part on an inclined plane of a casting may include mounting a plug unit including a casting plug and a screw thread insert combined with the casting plug on a movable mold or a fixed mold; performing casting by moving and combining the movable mold with the fixed mold and injecting a molten metal into a cavity formed between the movable mold and the fixed mold; performing mold opening after the casting; and separating the casting plug from the screw thread insert, wherein when the plug unit is mounted on the mold, the screw thread insert is deployed in the cavity, and a mold plane on which the casting plug is mounted forms an inclined plane having an acute angle against a horizontal plane that is parallel to a movement direction of the movable mold.

Abstract: A portable terminal is provided, which includes a display, and a processor configured to receive a first user input for controlling a brightness of the display, control the display to display an indicator at a first position based on the first user input and control the brightness of the display based on a first brightness step corresponding to the first position, receive a second user input for controlling the brightness of the display, and control the display to display the indicator at a second position which is different from the first position based on the second user input, without displaying the indicator at any intermediate position between the first position and the second position and change the brightness of the display based on a second brightness step corresponding to the second position. A shape and size of the indicator displayed at the first position corresponds to the shape and the size of the indicator displayed at the second position.

Abstract: Disclosed is a method for controlling a backlight of a portable terminal, which includes from a memory previously stored backlight brightness values that correspond to a backlight steps, retrieving a stored brightness value corresponding to one of a plurality of brightness steps selected by a user, regulating the brightness of the portable terminal according to the retrieved brightness value, and displaying the currently selected brightness step on the display unit, wherein the brightness steps correspond to incremental levels of brightness.

Abstract: An organic light-emitting display panel includes a plurality of pixel columns, a plurality of first signal lines, and a plurality of second signal lines. Each of the pixel columns includes a plurality of organic light-emitting pixels. The first signal lines are arranged to correspond to the pixel columns. Each of the first signal lines connected to the organic light-emitting pixels of a corresponding pixel column. The second signal lines are respectively connected to the first signal lines and provide a first power supply voltage to corresponding ones of the first signal lines. Each of the second signal lines is connected substantially to a center portion of the corresponding first signal line.

Abstract: A display device includes a display panel including a plurality of pixels, a power supply transmitting driving power to the pixels via a power line and stopping transmission of the driving power in response to a crack signal, a panel driver provides a driving signal to the pixels, the driving signal for displaying a black image during a non-emission period of each frame period and displaying a valid image during an emission period of each frame period, and a crack detector senses a current flowing through the power line and conditionally generate the crack signal according to values of the current sensed over M successive frame periods, where M is an integer greater than 1.

Abstract: A portable terminal is provided, which includes a display, and a processor configured to receive a first user input for controlling a brightness of the display, control the display to display an indicator at a first position based on the first user input and control the brightness of the display based on a first brightness step corresponding to the first position, receive a second user input for controlling the brightness of the display, and control the display to display the indicator at a second position which is different from the first position based on the second user input, without displaying the indicator at any intermediate position between the first position and the second position and change the brightness of the display based on a second brightness step corresponding to the second position. A shape and size of the indicator displayed at the first position corresponds to the shape and the size of the indicator displayed at the second position.

Abstract: An organic light-emitting display panel includes a plurality of pixel columns, a plurality of first signal lines, and a plurality of second signal lines. Each of the pixel columns includes a plurality of organic light-emitting pixels. The first signal lines are arranged to correspond to the pixel columns. Each of the first signal lines connected to the organic light-emitting pixels of a corresponding pixel column. The second signal lines are respectively connected to the first signal lines and provide a first power supply voltage to corresponding ones of the first signal lines. Each of the second signal lines is connected substantially to a center portion of the corresponding first signal line.

Abstract: A portable terminal is provided including a touch screen display; and a processor configured to control the touch screen display to display a brightness step selection interface for selecting a brightness step, receive, via the touch screen display, a first user input for selecting a first brightness step, control the touch screen display to display an indicator at a first position corresponding to the first brightness step and to control a brightness of the touch screen display based on the first brightness step, receive, via the touch screen display, a second user input for selecting a second brightness step, and control the touch screen display to change a position of the indicator from the first position to a second position corresponding to the second brightness step and to change the brightness of the touch screen display based on the second brightness step.

Abstract: A temperature estimating apparatus includes an average data outputting circuit configured to output average data of image data displayed on a display panel. The temperature estimating apparatus further includes a change amount outputting circuit configured to determine a change amount of the average data, and to output an average data change amount. The temperature estimating apparatus additionally includes a luminance outputting circuit configured to convert the average data change amount to a luminance, and to output the luminance. The temperature estimating apparatus further includes a temperature sensor configured to sense an ambient temperature of the display panel, and to output the ambient temperature. The temperature estimating apparatus additionally includes a current temperature outputting circuit configured to determine a current temperature of the display panel based on a previous temperature of the display panel, the luminance and the ambient temperature.

Abstract: An organic light-emitting display panel includes a plurality of pixel columns, a plurality of first signal lines, and a plurality of second signal lines. Each of the pixel columns includes a plurality of organic light-emitting pixels. The first signal lines are arranged to correspond to the pixel columns. Each of the first signal lines connected to the organic light-emitting pixels of a corresponding pixel column. The second signal lines are respectively connected to the first signal lines and provide a first power supply voltage to corresponding ones of the first signal lines. Each of the second signal lines is connected substantially to a center portion of the corresponding first signal line.

Abstract: A luminance compensator in a display device includes a temperature sensor that detects a temperature of a display panel, a temperature estimator that calculates an estimated temperature of each of a plurality of pixel blocks based on an average luminance of each pixel block and the temperature of the display panel, a first weight calculator that detects a displacement of the display panel and calculates a first temperature compensation weight for first compensation pixel blocks of the pixel blocks, the first compensation pixel blocks being adjacent to an upper side of an image pattern area displayed on a portion of the display panel, and a temperature compensator that calculates temperature compensation data by applying the first temperature compensation weight to the estimated temperature to compensate the average luminance, and outputs the temperature compensation data.

Abstract: A luminance compensator in a display device includes a temperature sensor that detects a temperature of a display panel, a temperature estimator that calculates an estimated temperature of each of a plurality of pixel blocks based on an average luminance of each pixel block and the temperature of the display panel, a first weight calculator that detects a displacement of the display panel and calculates a first temperature compensation weight for first compensation pixel blocks of the pixel blocks, the first compensation pixel blocks being adjacent to an upper side of an image pattern area displayed on a portion of the display panel, and a temperature compensator that calculates temperature compensation data by applying the first temperature compensation weight to the estimated temperature to compensate the average luminance, and outputs the temperature compensation data.

Abstract: A display device includes a display panel including a plurality of pixels, a power supply transmitting driving power to the pixels via a power line and stopping transmission of the driving power in response to a crack signal, a panel driver provides a driving signal to the pixels, the driving signal for displaying a black image during a non-emission period of each frame period and displaying a valid image during an emission period of each frame period, and a crack detector senses a current flowing through the power line and conditionally generate the crack signal according to values of the current sensed over M successive frame periods, where M is an integer greater than 1.

Abstract: A temperature estimating apparatus includes an average data outputting circuit configured to output average data of image data displayed on a display panel. The temperature estimating apparatus further includes a change amount outputting circuit configured to determine a change amount of the average data, and to output an average data change amount. The temperature estimating apparatus additionally includes a luminance outputting circuit configured to convert the average data change amount to a luminance, and to output the luminance. The temperature estimating apparatus further includes a temperature sensor configured to sense an ambient temperature of the display panel, and to output the ambient temperature. The temperature estimating apparatus additionally includes a current temperature outputting circuit configured to determine a current temperature of the display panel based on a previous temperature of the display panel, the luminance and the ambient temperature.

Abstract: A portable terminal is provided including a touch screen display; and a processor configured to control the touch screen display to display a brightness step selection interface for selecting a brightness step, receive, via the touch screen display, a first user input for selecting a first brightness step, control the touch screen display to display an indicator at a first position corresponding to the first brightness step and to control a brightness of the touch screen display based on the first brightness step, receive, via the touch screen display, a second user input for selecting a second brightness step, and control the touch screen display to change a position of the indicator from the first position to a second position corresponding to the second brightness step and to change the brightness of the touch screen display based on the second brightness step.

Abstract: A method of driving a display device includes a writing operation and a reading operation. The writing operation includes writing first to Mth frame data in a first frame memory during first to Mth frame periods. The reading operation includes reading (L?M)th and (L?M+1)th frame data among the first to Mth frame data from the first frame memory during an Lth frame period. M may be three or more, and L may be an integer ranging from (M+1) to (2M?1). The frame data read from the first frame memory corresponds to an image to be displayed. Reading and writing operations are further performed for remaining ones of the frame memories.

Abstract: Disclosed is a method for controlling a backlight of an electronic device, such as a portable terminal, which includes the steps of storing preset backlight brightness values so as to correspond to the backlight brightness values to backlight steps, detecting a backlight brightness value stored so as to correspond to the backlight step required by a user in backlight regulation mode, and regulating the backlight brightness according to the detected backlight brightness value. Further, since the present invention can regulate the backlight brightness at night, the illumination intensity of which is low, the consumption of the battery can be reduced.

Abstract: An organic light-emitting display panel includes a plurality of pixel columns, a plurality of first signal lines, and a plurality of second signal lines. Each of the pixel columns includes a plurality of organic light-emitting pixels. The first signal lines are arranged to correspond to the pixel columns. Each of the first signal lines connected to the organic light-emitting pixels of a corresponding pixel column. The second signal lines are respectively connected to the first signal lines and provide a first power supply voltage to corresponding ones of the first signal lines. Each of the second signal lines is connected substantially to a center portion of the corresponding first signal line.

Abstract: Disclosed is a method for controlling a backlight of a portable terminal, which includes the steps of storing preset backlight brightness values so as to correspond to the backlight brightness values to backlight steps, detecting a backlight brightness value stored so as to correspond to the backlight step required by a user in backlight regulation mode, and regulating the backlight brightness according to the detected backlight brightness value. Further, since the present invention can regulate the backlight brightness at night, the illumination intensity of which is low, the consumption of the battery can be reduced.