Illumination unit and its optical film group
A technology of optical film and light-emitting unit, which is applied in the directions of optics, nonlinear optics, and diffuser elements, and can solve the problems affecting the assembly cost and design cost of liquid crystal display devices, the inability to continuously increase the diffusion particles, and the increase in the overall thickness of the backlight module 1, etc. Problems, achieve the effect of reducing material cost, reducing energy loss, and increasing light brightness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0067] Please refer to Figure 2A As shown, a light emitting unit 2 of the first embodiment of the present invention is, for example, a direct-type backlight module, which includes at least two light sources S and an optical film set 20 . In this embodiment, multiple light sources S are taken as an example for illustration. Certainly, the light emitting unit 2 may also be a lighting device, an outdoor billboard or a light source module of other electronic devices.
[0068] The light source S is, for example, a cold-cathode fluorescent tube, a hot-cathode fluorescent tube, an external electrode fluorescent tube, a light-emitting diode, or an organic light-emitting diode. In this embodiment, a cold-cathode fluorescent tube is used as an example for illustration, and The light source S emits a light R respectively.
[0069] The optical film set 20 is adjacent to the light source S, and the optical film set 20 includes a first prism element 21 and a first diffusion element 22 . ...
no. 2 example
[0080] Please refer to Figure 7A As shown, the difference between the light emitting unit 3 of the second embodiment of the present invention and the first embodiment is that: the first prism layer 312 on the first prism element 31 of the optical film group 30 is set facing away from the light source S, and the second A plurality of air gaps A are also formed between a prism element 31 and the first diffusion element 32 .
[0081] Thus, the first rhombic element 31, like the first diffusing element 32, can evenly diffuse the light R emitted by the light source S, so that the light R emitted by the light source S can be transformed from a linear light source into a uniform surface. light source. Also, please refer to Figure 7B In the optical film set 30 ′ shown, the first prism element 31 can be disposed on the other side of the first diffusion element 32 , and the same effect can also be produced.
[0082] In addition, in this embodiment, in addition to the first diffusio...
no. 3 example
[0084] Please refer to Figure 8 As shown, the difference between the light-emitting unit 4 of the third embodiment of the present invention and the previous embodiments is that the first prism element 41 of the optical film set 40 further has a second prism layer 413, and the first substrate 411 is disposed on Between the first prism layer 412 and the second prism layer 413 . A plurality of air gaps A are formed between the first prism element 41 and the first diffusion element 42 . It should be noted that the first prism L1 and the second prism L2 of the first prism layer 412 and the second prism layer 413 can be formed by using the same or different shapes respectively, and the same triangle is used as an example here. illustrate.
[0085] Therefore, since the first prism element 41 has two prism layers 412 , 413 , the scattering effect of the first prism element 41 on the light R emitted by the light source S can be greatly improved.
[0086] In addition, similar to the...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More