Light-emitting structure of light guide bar group of touch panel

Abstract

The invention discloses a light-emitting structure of a light guide bar group of a touch panel, which comprises two groups of light sources and a light guide bar. The light-emitting structure is hollow, and the inner wall of the light-emitting structure is provided with a plurality of spiral reflecting notch lines with different gaps. Since the spiral reflecting notch lines of the light guide bar are arranged with different gaps, the light intensity of the light guide bar is uniform, the attenuation of the light intensity at the center can be avoided to cause non-uniform light intensity of the light guide bar and also the problem of poor touch of the touch panel.

Description

technical field [0001] The invention relates to a light-emitting structure of a light-guiding strip group on a touch panel, in particular to a light-emitting structure of a light-guiding strip group with spiral reflective scoring lines at unequal intervals. Background technique [0002] Due to the increasing popularity of flat-panel displays and the premise that 3C products tend to be thinner and smaller, there is a popular trend of using touch panels with flat-panel displays to replace input devices such as buttons or mice to achieve compact and convenient applications. For example, hand-held mobile phones, PDAs, and tablet computers often abandon the original physical keyboards and use pen control or touch panels instead. [0003] Please refer to figure 1 , figure 1 It is a conventional light-emitting structure of a light guide strip group for a touch panel. The light guide strip 80 is a hollow tube-shaped structure, and the inner wall has a spiral reflective score line ...

AI Technical Summary

Problems solved by technology

Due to the limitation of the position of the light sources 20, 30, the two ends of the light guide strip 80 are closer to the light sources 20, 30, so the luminous intensity is the strongest, but the central position of the light guide strip 80 is far away from the light sources 20, 30, so Luminous intensity is weak

Since the spiral reflective score lines 10 are designed at equal intervals, the luminous intensity at the central position of the light guide strip 80 cannot be increased, so there will be a problem of attenuation of the luminous intensity at the central position.

In this way, when the touch operation is performed at the position corresponding to the central position of the light guide strip 80, due to the problem of insufficient luminous intensity or poor uniformity, the signal intensity of the sensor of the touch panel is insufficient when receiving the light source, resulting in poor touch control. problem occurs

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