Backlight source, manufacturing method of backlight source and liquid crystal display

Abstract

The invention relates to a backlight source, a manufacturing method of the backlight source and a liquid crystal display. The backlight source comprises a printed circuit board and a line light source arranged on the side face of the printed circuit board. The line light source comprises an integral module including a plurality of point light sources arranged in the same plane. The method comprises the steps that firstly, a packaging groove is provided, the point light sources are packaged in the packaging groove in the manner that the point light sources are located in the same plane, and the line light source is formed; secondly, the line light source is fixedly arranged on the side face of the printed circuit board. The backlight source comprises the integral module line light source, it is guaranteed that the line light source has good flatness, and therefore the light emitting effect of the backlight source and the display effect of the liquid crystal display are improved.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a backlight source. The invention also relates to a method for manufacturing such a backlight, and a liquid crystal display including such a backlight. Background technique [0002] In liquid crystal displays, the liquid crystal itself does not emit light but it can modulate the light from the backlight to display graphics or characters. Therefore, the luminous effect of the backlight source will directly affect the display effect of the liquid crystal display. [0003] A backlight generally includes a light guide plate, a printed circuit board (PCB), and a plurality of light emitting diodes (LEDs) disposed on the printed circuit board. Usually these LEDs are arranged in strips to form a light strip. The printed circuit board controls the light bar to emit light, and the light guide plate guides the light emitted by the light bar to illuminate the entire display. [0004...

AI Technical Summary

Problems solved by technology

However, in the process of mounting LEDs, there will inevitably be a problem of relative misalignment between each LED, resulting in poor plane straightness of the LED strip.

like figure 1 As shown, the light-emitting diodes 2 on the printed circuit board 1 are relatively dislocated, that is, the flatness of these light-emitting diodes 2 is very poor, thus affecting the luminous effect of the backlight source and the display effect of the liquid crystal display

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