Abstract:
PROBLEM TO BE SOLVED: To provide a light source module which will not increase a drive voltage or the number of drive circuits, even when the number of light-emitting diodes is increased, and can be driven by a simple drive circuit without lowering a lifetime of the light-emitting diode, its manufacturing method, a light source device using this light source module, and to provide a liquid crystal display device using this light source device. SOLUTION: In the light source module mounting the light-emitting diode, in at least a kind of light-emitting diode L, a pair S in which a given number (for example, 2 pieces) of light-emitting diodes are parallel connected is formed, and a plurality (for example, 5 pieces) of pairs S are series connected. In each of the pairs S 1 to S 5 , light-emitting diodes La 1 and Lb 1 , La 2 and Lb 2 , La 3 and Lb 3 , La 4 and Lb 4 , La 5 and Lb 5 are configured to have mutually substantially identical current - voltage characteristic. The light-emitting diode having substantially the identical characteristics is selected, based on positional information on a wafer in which the light-emitting diode is formed. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PURPOSE:To provide a white balance measuring apparatus for determining the white balance of a display device easily. CONSTITUTION:A measuring light from a screen to be measured is detected through a probe 1 and resolved into three primary colors. The quantity of light of each color is then converted into an electric signal to produce three primary color signals which are digitized at an A/D converting section 8. A processing section 9 operates the chromaticity and luminance for the digitized three primary color signals. The operation results are displayed numerically on the screen at a liquid crystal display section 7 and the coordinates thereof are controlled through a display control section 11.
Abstract:
PURPOSE:To speedily evaluate characteristics of a liquid crystal panel, etc., with simple constitution. CONSTITUTION:The display screen S of the liquid crystal panel 10 is virtually divided into plural parts and characteristic measurement images obtained as a result are formed on a photodetector 20 through a lens system 12. The photodetector 20 has photodetection parts PD1-PD9 as many as the divided parts and the characteristics of the liquid crystal panel 10 are evaluated at a time according to the plural detection outputs obtained from the photodetection parts PD1-PD9 at the same time.
Abstract:
PURPOSE:To exactly measure luminance and chromaticity by providing a lens system and a beam splitting prism and making beams emitted from a color picture incident through them to each photodiode. CONSTITUTION:The beams emitted from a color picture 30 on a CRT or an LCD display panel, etc., are made incident to a lens system 14 and these beams are made incident through a beam splitting prism 15 and respective filters 16-18 for R, G and B (red, green and blue) to respective photodiodes 19-21 for R, G and B. Then, the respective photodiodes 19-21 converts the quantity of received light into a current and transmits it to respective photoamplifiers 22-24, and the respective photoamplifiers 22-24 convert the current transmitted from the respective photodiodes 19-21 to a voltage and transmit it to a signal processing part 29. Further, the outputs of the photodiodes 19-21 are operated at this signal processing part 29, and the state of luminance or chromaticity, etc., is detected.
Abstract:
PROBLEM TO BE SOLVED: To provide a backlight device and a liquid crystal display which can suppress the thickness, and suppress the weight even if upsized. SOLUTION: The backlight device includes an LED chip substrate on which red LED chips to emit red light, green LED chips to emit green light and blue LED chips to emit green light are arranged in plural numbers by an optional arraying method, a diffusion part which is disposed above the LED chip substrate and diffuses each light emitted from each LED chip, a light amount detecting part to detect the light amount based on the light emitted from the LED chip substrate, and an adjusting part to adjust an electric current supplied to the LED chip substrate. Such constitution allows the cost down of the liquid crystal display. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PURPOSE:To detect defective pictures not only by points but also by lines or planes by storing photographed video images as the pixel data of a display device in a frame memory provided in a picture processing means. CONSTITUTION:RGB signals outputted from a CCD camera 11 for photographing a liquid crystal panel 10a are digital converted at the A/D converter 12a of a picture processor 12 and stored in the frame memory of a picture processing part 12b as the pixel data. Then, the levels of respective memory cells in an address area in which the pixel data are stored are two-dimensionally compared and calculated and when the level data of the memory cell to be a center are a maximum value, it is recognized that a picture element is present at the position. Thus, by obtaining the level data and the addresses of the respective picture elements as frame memory address data inside the picture processing part 12b, at the time of displaying, for instance, total black, total white or gray as the intermediate color, etc., the defective picture elements can be detected not only by the points but also by the lines or the planes.
Abstract:
PURPOSE:To gain the structure able to confirm which part is measured in the case of measuring the luminance or the like of a color picture. CONSTITUTION:A photodiode 25 for G is movably fitted to a main body 18 of a sensor so as to switch the position with an imaging device 28 of an adjacently arranged camera part 29. When the imaging device 28 is arranged at a position corresponding to a beam splitting prism 20, in the color picture, the image of a part made incident to a lens system 19 can be picked up by the camera part 29. Therefore, while observing the image picked up by the camera part 29 on a monitor television, the measured position and range can be confirmed or focusing, etc., is enabled.
Abstract:
PROBLEM TO BE SOLVED: To provide a backlight device with heat dissipation efficiency improved by adhering a driving substrate to a chassis by using the fact that a driving voltage is lowered by partial driving control, and which facilitates electrically connecting a light source substrate mounting LEDs with a driving substrate for driving the LEDs with a connecting pin. SOLUTION: The backlight unit includes an LED light source substrate structured of a chassis with a flat-shape plane part, a heat dissipation surface adhered to a first surface of the plane part, and an element-forming surface mounting a plurality of LEDs, an LED driving substrate adhered to a second surface contrary to the first surface of the plane part and mounting a control circuit for driving the LEDs, and at least one connecting structure constituted by including metallic connecting pins for electrically connecting the LED light source substrate and the LED driving substrate by pinching the LED light source substrate, the plane part of the chassis and the LED driving substrate. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an inspection device and an inspection method capable of inspecting automatically the setting accuracy and the measurement accuracy of a voltage, a current and the time of a measuring device used in a manufacturing process of a secondary battery, the measurement accuracy of a resistance and an impedance, contact of a contact pin, and right and wrong of wiring from a charge/discharge unit to a fixture. SOLUTION: This inspection device for a measuring device is equipped with a measuring device 54 of the electrical physical quantity equipped with the fixture 14, an electrical physical quantity supply means 52 connectable to or loadable on the fixture 14, and another measuring means 51 capable of measuring the physical quantity, and communicable with the measuring device 54. In the inspection device, the values measured by the measuring device 54 and the measuring means 51 are compared each other, to thereby calibrate the measuring device 54.
Abstract:
PURPOSE:To provide a white balance measuring apparatus in which a plurality of types of display device can be measured easily by replacing a photosensor easily. CONSTITUTION:A detection probe 10 comprising color filters 12-14 for resolving a measuring light from a screen to be measured into three primary colors, photosensors 15-17 for converting the quantity of light of three primary color into an electric signal, and a nonvolatile memory 18 storing measuring parameters is freely exchangably connected with an apparatus body 30 through a connection cable 20. A three primary color signal detected through the probe 10 is passed through an A/D section 34 to produce a digital three color primary signal. It is fed to a processing section 35 where the chromaticity and luminance are operated based on measurement parameters fed from the nonvolatile memory 18. A display control section 37 then controls a liquid display section 33 depending on the operation results.