摘要:
The invention provides a cost effective way of determining the status of a light emitting device, such as a light emitting device in a non-emitting display device. The apparatus includes a light emitting device, a voltage supply coupled to the light emitting device for making a current flow through the light emitting device, and an electrically conductive device spaced apart from the light emitting device for inducing a voltage proportional to the voltage across the light emitting device. A status determining device determines the status of the light emitting device based on the voltage from the electrically conductive device.
摘要:
A light source portion for a liquid crystal display (LCD) device may prevent reduction of the life span of the multiple lamps (LPs) when a surrounding temperature of the multiple LPs is less than a predetermined temperature of the LCD device. The LCD device comprises first and second brightness control portions receiving a brightness control signal, a temperature sensor, a signal output portion connected to the first and second brightness control portions and the temperature sensor, and an inverter portion turning on or turning off the multiple LPs based on the control signal from the signal output portion. When the temperature sensed by the temperature sensor is less than the predetermined temperature of the LCD device, the signal output portion switches the brightness control signal from a high level to a low level, and makes the multiple LPs maintain the high level until the surrounding temperature becomes more than the predetermined temperature.
摘要:
The organic EL display panel according to the present invention includes; a plurality of data lines, a plurality of scan lines, switching elements of which second ends are connected to the scan lines to turn currents on and off and pixel electrodes provided in specific areas disposed in a matrix among the data lines and the scan lines, embedding specific impedance elements, and, emitting light by being supplied with level-reduced voltages by the impedance elements according to data signals inputted through the first ends of the switching elements.
摘要:
A method and apparatus for operating a light assembly with fewer peripheral devices than is currently required is presented. The apparatus of the invention includes a lamp unit, a current restricting unit coupled to the lamp unit, and a current sensing unit that is coupled to the current restricting unit. Upon detecting a current output exceeding a predetermined magnitude for at least a predetermined time period, the current restricting unit increases the load on one of the lamps. The current sensing unit senses the output from each of the lamps as modified by the current restricting unit, and sums the outputs to determine a total current flow through the lamps. A current control unit that is coupled to the current sensing unit uses the total current flow to adjust the current input to the lamps.
摘要:
In a backlight assembly and an LCD device having the same, a backlight assembly includes a main light source and an auxiliary light source. The main light source is under an LCD panel that displays an image. The main light source generates a main light. The auxiliary light source generates an auxiliary light. Therefore, luminance of the backlight assembly becomes more uniform, and an image display quality of the LCD device is improved.
摘要:
A backlight assembly apparatus, including a conductive receiving container, a flat fluorescent lamp provided over the conductive receiving container, and an insulating member positioned between the conductive receiving container and the flat fluorescent lamp to provide insulation.
摘要:
A surface light source has a body including a first substrate, a second substrate facing with the first substrate, and a space-dividing member. The first substrate has first fluorescent patterns to convert an invisible ray into a visible ray. The first fluorescent patterns are formed in parallel by a first interval. The space-dividing member is interposed between the first and second substrates to form a discharge space. The space-dividing member has a width less than the first interval to emit the visible ray between the space-dividing member and the first fluorescent patterns. A power supply member generates the invisible ray in the discharge space. Thus, the surface light source enhances brightness of the visible ray emitted from the body.
摘要:
A planar light source device includes a light source body, and first and second electrodes. The light source body includes a first substrate, a second substrate facing the first substrate, and partitions disposed between the first and second substrates to define a discharge space. The first electrode includes a first voltage applying portion and a first electrode portion having protrusions extended from the first voltage applying portion and disposed between the partitions. The second electrode is disposed on the light source body, such that the second electrode is spaced apart from the first electrode. The planar light source device generates light having uniform luminance distribution.
摘要:
A second harmonic generating method and apparatus is disclosed in which temperature of the nonlinear optical device is detected using a temperature sensor and the light output control is performed only when the temperature of the nonlinear optical device falls within a predetermined range through a comparison with a set temperature, so that the best peak can be selected. At no time is a different peak selected when the characteristics or operation conditions of the nonlinear optical device change.
摘要:
Method of detecting a touched position on a touch display of a display apparatus includes determining an amount of an electrical charge generated by a touch on the touch display panel of a display apparatus, determining a difference between the amount of the electrical charge generated from the touch and an amount of a reference electrical charge and comparing this difference to a threshold value, detecting the position of the touch if it is determined that the difference between the amount of the electrical charge generated from the touch and the amount of the reference electrical charge is substantially the same as or larger than the threshold value and detecting the touched position using a pressure according to the touch if it is determined that difference between the amount of the electrical charge and the amount of the reference voltage is smaller than the threshold value.