LIQUID CRYSTAL DISPLAY DEVICE AND TELEVISION RECEIVER

Disclosed is a liquid crystal display device wherein generation of sounds due to vibration of an LED substrate used in an LED backlight is suppressed. The liquid crystal display device drives the LED by means of PWM control using the LED backlight. An LED substrate (1) having the LED disposed thereo...

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Bibliographische Detailangaben
1. Verfasser:	KENTAROH OHKI
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	BLASTING DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	Disclosed is a liquid crystal display device wherein generation of sounds due to vibration of an LED substrate used in an LED backlight is suppressed. The liquid crystal display device drives the LED by means of PWM control using the LED backlight. An LED substrate (1) having the LED disposed thereon has a front surface pattern (201) having the LED (2) provided on the mounting surface, and a rear surface pattern (202) provided on the rear surface side of the substrate. The rear surface pattern (202) is not a circuit pattern for driving the LED, but is provided so as to dissipate heat and to prevent warping of the substrate. Furthermore, the rear surface pattern (202) has a structure which is grounded. In the grounded structure, a conductive tape (205) is attached on the rear surface pattern (202), and electricity is carried by having the conductive tape (205) in contact with a backlight chassis (101). Se describe un dispositivo de pantalla de cristal líquido en donde es suprimida la generación de sonidos debido a la vibración de un substrato LED utilizado en una retroiluminación LED. El dispositivo de pantalla de cristal líquido excita al LED por medio del control PWM utilizando la retroiluminación LED. Un substrato LED (1) que tiene LED situado en el mismo tiene un patrón de superficie frontal (201) que a su vez tiene el LED (2) proporcionado en la superficie de montaje, y un patrón de superficie posterior (202) proporcionado en el lado de superficie posterior del substrato. El patrón de superficie posterior (202) no es un patrón de circuito para la excitación del LED, sino que es proporcionado para disipar el calor y evitar la distorsión o deformación del substrato. Además, el patrón de superficie posterior (202) tiene una estructura que es conectada a tierra. En la estructura conectada a tierra, una cinta conductiva (205) es unida en el patrón de superficie posterior (202), y la electricidad es llevada al tener la cinta conductiva (205) en contacto con un chasis de retroiluminación (101).