Light controllable type quantum dot backlight source

Abstract

The invention provides a light controllable type quantum dot backlight source. The light controllable type quantum dot backlight source comprises a blue light source module and an optical plate, wherein the blue light source module and the optical plate are sequentially stacked. A quantum dot layer is arranged on the in-light end surface of the optical plate, and a microstructure is arranged on the out-light end surface of the optical plate. According to the light controllable type quantum dot backlight source, the high precision ink spraying printing technology is adopted, thus a quantum dot convex len is formed on the end surface of the optical plate; the light effect and divergence angle of dot light source are improved; the utilization rate of quantum dot materials is increased. According to the light type of the light source on the out-light surface, the size and density of pixels in the small partition are adjusted; the control on the uniformity of a backlight plate is realized. The concentration of red and green quantum dot ink, the relative proportion and resolution rate distribution of red and green quantum dots are adjusted; the accuracy control on the chromaticity, color temperature and wavelength of emitting light are realized. The shape, size and depth of the superfine microstructure optical plate surface structure are adjusted; high precision ink spraying printing design is combined and the overall light effect of the light controllable type quantum dot backlight source is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optically controllable quantum dot backlight source. Background technique [0002] With the rapid development of the international IT industry, the relevant LCD industry continues to introduce new ones, and the size of LCD products is developing towards diversification and portability. Backlight (BackLight) is a light source located behind the liquid crystal display (LCD). It is one of the core components of LCD products. Its luminous effect will directly affect the visual effect of the liquid crystal display module LCM. The LCD itself does not emit light. Rely on backlight. At present, the backlight on the market mainly uses blue LEDs to excite the phosphor layer or quantum dot layer to achieve white light. Because the white light obtained by the blue LED excitation phosphor layer is not natural enough, the color gamut is narrow, and the color rendering index is low. , and ...

AI Technical Summary

Problems solved by technology

[0007] In the prior art, the quantum dots of the quantum dot backlight are mostly uniformly distributed, and the light mixing of blue light sources of different intensities is uneven, resulting in poor uniformity of the outgoing light; and the quantum dots emit a lot of heat when mixing light, and the quantum dots The thermal stability is poor. When the temperature is too high, the quantum dots will fail, causing the blue light component directly passing through the quantum dots to increase, making the backlight overall bluish.

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