Surface light source device, manufacturing method thereof, and display device
A technology for display devices and surface light sources, which is applied in the directions of instruments, optics, nonlinear optics, etc. It can solve the problems of ink reflectivity and color difference, block uneven brightness, mosaic, etc., and achieve a thin and high color gamut white surface Light source, avoid the effect of uneven brightness
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Embodiment 1
[0047] Such as figure 1 As shown, a surface light source device 100 includes: a substrate 1 , a reflective layer 2 , a photoresist layer 3 , a QD layer 4 , an encapsulation layer 5 and a PCB module 6 .
[0048] Such as figure 1 As shown, the reflective layer 2 is arranged on the substrate 1 at intervals, and a first opening is formed between two adjacent reflective layers 2; the reflective layer 2 is a metal reflective layer, specifically, the metal The composition material of the reflective layer includes one or more of aluminum, silver and titanium. The reflective layer 2 made in this way can avoid light penetration, has good light reflection effect, and is beneficial to realize light diffusion, thereby forming a surface light source.
[0049] Such as figure 1 As shown, wherein the photoresist layer 3 is correspondingly arranged on the reflective layer 2, and a second opening is formed between two adjacent photoresist layers 3, and the second opening is arranged correspon...
Embodiment 2
[0052] In the following, only the differences between the present embodiment and the first embodiment will be described, and the similarities will not be repeated here.
[0053] Such as figure 2 As shown, wherein the PCB module 6 includes 2 quantities. The position of the seam between two adjacent PCB modules 6 is set corresponding to the position of the reflective layer 2 . In this way, the splicing seam between the PCB modules 6 and the PCB 61 can be covered by the reflective layer 2. When the blue light emitted by the LED 62 passes through the QD layer 4, it is converted into white light, and the white light is reflected by the optical scattering material and no longer passes through the PCB 61. The ink and the slit are directly reflected by the reflective layer 2 to form a white surface light source, which avoids the mosaic phenomenon of blocky uneven brightness caused by the inconsistent ink reflectivity and color difference of the PCB 61 .
Embodiment 3
[0055] Such as Figure 3-7 As shown, this embodiment also provides a method for preparing a surface light source device, which includes: S1, providing a substrate 1, and forming a reflective layer 2 on the substrate 1 by sputtering or deposition; S2, by Photomask and etching process, patterning the reflective layer 2, forming a first opening between two adjacent reflective layers 2, thereby obtaining reflective layers 2 arranged at intervals; S3, in the reflective layer 2 And the first opening is coated with photoresist, and the photoresist is exposed to UV light 7 from the back of the substrate 1, and a second opening corresponding to the first opening is formed between two adjacent photoresist layers 3, Thereby forming a photoresist layer 3 correspondingly arranged on the reflective layer 2; S4, spraying a QD solution in the first opening between the reflective layers 2, and curing to obtain a QD layer 4; S5, in the first opening between the reflective layers 2 Coating glue...
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