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Full-color direct inserted LED (Light Emitting Diode) lamp bead and display screen thereof

A technology of LED display screen and LED lamp bead, which is applied in the direction of instruments, electrical components, electric solid devices, etc., can solve the problems such as the difference of luminous angle, achieve the effect of increasing the refraction angle, meeting the demand, and excellent effect

Active Publication Date: 2014-12-03
LIGHTKING TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a full-color in-line LED lamp bead and its display screen, which can solve the problem that the light-emitting angles of the R, G, and B three-in-one full-color LED lamp beads in the prior art are too different, so that it can be viewed at different angles. There is no big difference when displaying

Method used

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  • Full-color direct inserted LED (Light Emitting Diode) lamp bead and display screen thereof
  • Full-color direct inserted LED (Light Emitting Diode) lamp bead and display screen thereof
  • Full-color direct inserted LED (Light Emitting Diode) lamp bead and display screen thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The cross-sectional shape of the reflector cup 6 of the full-color in-line LED lamp bead is a racetrack shape. The racetrack shape means that its two opposite sides are parallel, and the other two opposite sides are arc-shaped. The G chip 2 is The racetrack-shaped reflector cup 6 is at a center position, the R chip 2 and the B chip 4 are symmetrically arranged on both sides of the G chip 2, and the R chip 2, the G chip 3 and the B chip 4 are arranged in a straight line It is parallel to the two parallel opposite sides of the racetrack-shaped reflecting cup 6. Such as figure 1 with figure 2 As shown, the cross-sectional shape of the reflector cup in the prior art is elliptical. Due to the limitation of the reflector cup shape, the light emitted by each of the R chip 2, G chip 3 and B chip 4 is the largest on both sides of the arrangement direction. The exit angles are inconsistent. In a specific simulation experiment, the maximum exit angles of the R chip 2 and the B chi...

Embodiment 2

[0025] The cross-sectional shape of the colloid 1 is a racetrack shape. Since the light from the three chips of the full-color in-line LED lamp bead is refracted by the colloid after coming out of the reflector, in this embodiment, regardless of the difference of the reflector, the three chips are the light-emitting centers. The simulation experiments of refraction and diffusion are performed on the elliptical colloid and the racetrack-shaped colloid 1 respectively. Such as image 3 As shown, the cross-section of the colloid of the full-color in-line LED lamp beads in the prior art is elliptical, and the light rays on both sides of the arrangement direction of the three chips are inconsistent in the path of propagation in the colloid, which will also cause the final refraction angle to be different. The difference is large. The elliptical colloid used in the experiment, when the light from the three chips at a certain angle is refracted by the colloid, the refraction angle of t...

Embodiment 3

[0027] The cross-sections of the colloid 1 and the reflecting cup 6 of the full-color in-line LED lamp bead are both racetrack-shaped. As can be seen from the aforementioned simulation experiment, the reflection angle of the light from the three chips in the reflector cup and the refraction angle in the colloid have an angle difference, and the difference in the angle of the light from the lamp bead is equal to the reflection angle. The sum of the difference and the difference in the angle of refraction, then, after the light from the three chips of the full-color in-line LED lamp bead in the prior art is emitted, the R chip 2 is 34° smaller than the G chip 3 (ie, the reflection angle The sum of the difference of 13° and the difference of refraction angle of 21°), the exit angle of the B chip 4 is 35° smaller than that of the G chip 3 (that is, the sum of the difference of 13° in reflection angle and 22° of refraction angle); After the light from the three chips of the full-col...

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Abstract

The invention provides a full-color direct inserted LED (Light Emitting Diode) lamp bead, which comprises a rubber body, pins and three LED chips R, G and B; four pins are provided, which are respectively three negative pins corresponding to the chips R, G and B and one pin serving as a public anode; one end of the public anode is sealed inside the rubber body; a reflecting cup is further arranged at the sealed end of the public anode; the chips R, G and B are linearly arranged inside the reflecting cup sequentially; the chips R, G and B are connected with pin leads; and the cross section of at least one of the reflecting cup and the rubber body is runway shaped, thereby ensuring that the vision of people while watching a display screen from two sides of the arrangement direction of the chips R, G and B does not differ greatly; the lamp lead can be used on the display screen; and the requirements of the LED display screen are met.

Description

Technical field [0001] The invention relates to the technical field of LEDs, in particular to a full-color in-line LED lamp bead and a display screen thereof. Background technique [0002] LED displays have always played an important role in the field of flat panel displays, and there is still considerable room for development in the future for a long time. The LED display has the advantages of high brightness, splicable use, convenience and flexibility, high efficiency and low consumption, making it display in a large area, especially in sports, advertising, transportation, exhibitions and other fields. The LED display is from monochrome The wide-span variety to full-color is provided, which provides the basis for its adaptation to a wide range of applications. In the full-color display currently used on the market, three or four R, G, B monochromatic LED lamp beads are used to form a pixel, or the three-in-one R, G, and B chip is used to make a single full-color LED lamp bead...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/60H01L33/54H01L25/075G09F9/33
CPCH01L2224/48247H01L2224/49113
Inventor 邹启兵罗新房
Owner LIGHTKING TECH GRP CO LTD
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