Backlight, backlight assembly, liquid crystal display having the same and method thereof

A backlight comprising:

• a substrate with a plurality of wiring provided thereon;
• and
• a plurality of chip modules disposed on the substrate,
• wherein each of the chip modules comprises:
• an LED chip unit including red, green and blue LED chips mounted on the substrate;
• a color sensor chip mounted on the substrate;
• and
• a molding portion enclosing and securing the LED chip unit and the color sensor chip with the substrate,
• wherein the plurality of wiring includes:
• a first wiring electrically connecting the red LED chips to each other,
• a second wiring electrically connecting the green LED chips to each other,
• a third wiring electrically connecting the blue LED chips to each other, and
• a fourth wiring electrically connected to the color sensor chip, and
• wherein
• the first, second and third wiring are disposed on a first surface of the substrate, and the fourth wiring is disposed on a second surface of the substrate, opposed to the first surface,
• portions of the fourth wiring which are adjacent to the LED chip unit, are bent, and
• the portions of the fourth wiring are in the molding portion.

A liquid crystal display (“LCD”) comprising:

• an LCD panel displaying images thereon;
• and
• a backlight assembly emitting light onto the LCD panel,
• wherein
• the backlight assembly includes a plurality of backlights, each of the backlights including a substrate with a plurality of wiring provided thereon and a plurality of LED modules emitting light disposed on the substrate, and
• at least one color sensor including a color sensor chip disposed on the substrate and a molding portion enclosing the color sensor chip alone, the color sensor being disposed in at least one of the plurality of backlights,
• wherein the plurality of wiring includes:
• a first wiring electrically connecting the LED modules to each other;
• and
• a second wiring separated from the first wiring and electrically connected to the color sensor chip, and
• wherein
• the first wiring is disposed on a first surface of the substrate, and the second wiring is disposed on a second surface of the substrate, opposed to the first surface,
• the plurality of LED modules are connected in series to one another through the first wiring,
• the color sensor chip comprises red, green and blue light sensing portions sensing red, green and blue light, respectively, and
• at least one color sensor chip is mounted between adjacent LED modules in every row of the LED modules.

A method of forming a backlight assembly for a liquid crystal display, the method comprising:

• forming a plurality of backlights, each of the backlights including a substrate, a first wiring, a second wiring separated for the first wiring, and a plurality of LED modules emitting light and electrically connected to each other through the first wiring;
• forming a color sensor including a color sensor chip, which is electrically connected to the second wiring and mounted on the substrate, and a molding portion enclosing the color sensor chip alone;
• disposing a color sensor on at least one of the plurality of backlights;
• and
• receiving the plurality of backlights into an accommodating member,
• wherein
• the first wiring is disposed on a first surface of the substrate, and the second wiring is disposed on a second surface of the substrate, opposed to the first surface,
• the plurality of LED modules are connected in series to one another through the first wiring,
• the color sensor chip comprises red, green and blue light sensing portions sensing red, green and blue light, respectively, and
• at least one color sensor chip is mounted between adjacent LED modules in every row of the LED modules.