LED SUBSTRATE, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY DEVICE
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an LED substrate capable of being downsized in width. In addition, provided are LED substrates that can be disposed laterally in an efficient fashion. Each LED substrate (20) includes a radiating plate (22) made from metal, an insulating layer (23), a connector (40) disposed in the middle of the LED substrate, a plurality of LEDs (21) disposed to the right and left of the connector, first and second ground patterns (34, 35) disposed at left and right ends of each LED substrate, and a third ground pattern (36) disposed in the middle of the LED substrate, wherein the first, second and third ground patterns are electrically connected to the metallic radiating plate, which is disposed under the first, second and third ground patterns while sandwiching therebetween the insulating layer, via sheet-metal screws (71, 72 and 73).
31 Citations
28 Claims
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1-12. -12. (canceled)
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13. An LED substrate that comprises:
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a radiating plate made from metal that has a rectangular shape long in a right/left direction; an insulating layer disposed on an upper surface of the radiating plate; a connector disposed in the middle on an upper surface of the insulating layer, and comprising a first light-source-side terminal, a second light-source-side terminal and a ground-side terminal; a first LED group comprising a plurality of LEDs that are disposed to the left of the connector on the upper surface of the insulating layer linearly along a longitudinal direction of the radiating plate, and connected to each other in series; a second LED group comprising a plurality of LEDs that are disposed to the right of the connector on the upper surface of the insulating layer linearly along the longitudinal direction of the radiating plate, and connected to each other in series; a first light source pattern disposed in the middle on the upper surface of the insulating layer, and connected to the first LED from the right in the first LED group; a second light source pattern disposed in the middle on the upper surface of the insulating layer, and connected to the first LED from the left in the second LED group; a first ground pattern disposed at a left end on the upper surface of the insulating layer, and connected to the first LED from the left in the first LED group; and a second ground pattern disposed at a right end on the upper surface of the insulating layer, and connected to the first LED from the right in the second LED group, wherein the LED substrate further comprises a third ground pattern disposed in the middle on the upper surface of the insulating layer, wherein the first light source pattern is connected to the first light-source-side terminal of the connector, wherein the second light source pattern is connected to the second light-source-side terminal of the connector, wherein the third light source pattern is connected to the ground-side terminal of the connector, wherein the first ground pattern is connected to the radiating plate via a first screw made from metal that is inserted in a first through-hole provided to the first ground pattern and the radiating plate, wherein the second ground pattern is connected to the radiating plate via a second screw made from metal that is inserted in a second through-hole provided to the second ground pattern and the radiating plate, and wherein the third ground pattern is connected to the radiating plate via a third screw made from metal that is inserted in a third through-hole provided to the third ground pattern and the radiating plate. - View Dependent Claims (14, 15, 16)
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17. A backlight unit comprising:
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a light guide plate having a plate shape; an LED substrate disposed on a side surface of the light guide plate; and a chassis made from metal and arranged to house the light guide plate and the LED substrate, wherein the LED substrate comprises; a radiating plate made from metal that has a rectangular shape long in a right/left direction; an insulating layer disposed on an upper surface of the radiating plate; a connector disposed in the middle on an upper surface of the insulating layer, and comprising a first light-source-side terminal, a second light-source-side terminal and a ground-side terminal; a first LED group comprising a plurality of LEDs that are disposed to the left of the connector on the upper surface of the insulating layer linearly along a longitudinal direction of the radiating plate, and connected to each other in series; a second LED group comprising a plurality of LEDs that are disposed to the right of the connector on the upper surface of the insulating layer linearly along the longitudinal direction of the radiating plate, and connected to each other in series; a first light source pattern disposed in the middle on the upper surface of the insulating layer, and connected to the first LED from the right in the first LED group; a second light source pattern disposed in the middle on the upper surface of the insulating layer, and connected to the first LED from the left in the second LED group; a first ground pattern disposed at a left end on the upper surface of the insulating layer, and connected to the first LED from the left in the first LED group; and a second ground pattern disposed at a right end on the upper surface of the insulating layer, and connected to the first LED from the right in the second LED group, wherein the LED substrate further comprises a third ground pattern disposed in the middle on the upper surface of the insulating layer, wherein the first light source pattern is connected to the first light-source-side terminal of the connector, wherein the second light source pattern is connected to the second light-source-side terminal of the connector, wherein the third light source pattern is connected to the ground-side terminal of the connector, wherein the first ground pattern is connected to the radiating plate via a first screw made from metal that is inserted in a first through-hole provided to the first ground pattern and the radiating plate, wherein the second ground pattern is connected to the radiating plate via a second screw made from metal that is inserted in a second through-hole provided to the second ground pattern and the radiating plate, and wherein the third ground pattern is connected to the radiating plate via a third screw made from metal that is inserted in a third through-hole provided to the third ground pattern and the radiating plate. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification