Search

CN-121995563-A - Light guide module and display panel

CN121995563ACN 121995563 ACN121995563 ACN 121995563ACN-121995563-A

Abstract

The application provides a light guide module and a display panel. The light guide module comprises a light guide plate and at least one light source, wherein the light guide plate comprises a substrate and a microstructure layer arranged on the substrate, the substrate is provided with a first surface, a second surface opposite to the first surface and a light incident surface connecting the first surface and the second surface, the microstructure layer is arranged on the first surface and comprises a plurality of groups of grating structures, different groups of grating structures correspond to different display patterns, the at least one light source is configured to project light rays to the light incident surface so as to enable the light rays to be conducted in the light guide plate, and the light rays emitted by the light source are coupled out of the light guide plate after passing through the light incident surface and the same group of grating structures and are converged at an observation point corresponding to the group of grating structures on the same side and/or the opposite side of the group of grating structures. According to the light guide module, different grating structures are arranged on the light guide plate, and the three-dimensional patterns or dynamic patterns can be displayed under the irradiation of corresponding light sources, so that the display effect of the patterned light guide plate is enriched.

Inventors

  • LIU XIAONING
  • HAN CHUNFANG
  • YANG YING
  • SHEN YUE

Assignees

  • 苏州苏大维格科技集团股份有限公司

Dates

Publication Date
20260508
Application Date
20241101

Claims (10)

  1. 1. The utility model provides a light guide module which characterized in that includes: the light guide plate comprises a substrate and a microstructure layer arranged on the substrate, wherein the substrate is provided with a first surface, a second surface opposite to the first surface and a light incident surface connecting the first surface and the second surface, the microstructure layer is arranged on the first surface and comprises a plurality of groups of grating structures, the grating structures of different groups correspond to different display patterns, and the light guide plate comprises a light guide plate body and a light guide plate body At least one light source configured to project light toward the light incident surface so that the light is conducted in the light guide plate; Wherein, the Light rays emitted by the light source are coupled out of the light guide plate after passing through the light incident surface and the same group of grating structures, and are converged at the observation view points corresponding to the group of grating structures on the same side and/or opposite sides of the group of grating structures.
  2. 2. A light guide module as recited in claim 1, wherein each group of grating structures in the microstructured layer is configured to nest with each other and have no overlapping portions.
  3. 3. The light guide module according to claim 1 or 2, wherein, The light guide module has a single light source; When the single light source is lightened, the light rays emitted by the light source are coupled out of the light guide plate after passing through the light incident surface and the multiple groups of grating structures and are converged at different observation viewpoints.
  4. 4. A light guide module as claimed in claim 3, wherein the angular interval between adjacent viewing points is in the range 1 ° to 10 °.
  5. 5. The light guide module according to claim 1 or 2, wherein, The light guide module is provided with a plurality of light sources, the positions and/or the wavelengths of the different light sources are different, and the light sources are in one-to-one correspondence with the plurality of groups of grating structures; when the light sources are sequentially lightened, the light rays emitted by the light sources pass through the light incident surface and the corresponding grating structures, are coupled out of the light guide plate, and are converged at the same observation point.
  6. 6. A light guide module as claimed in claim 1 or 2, characterized in that the period and/or orientation of the grating structures of different groups are different.
  7. 7. The light guide module of claim 6, wherein the grating structures have a length or width ranging from 10 μm to 200 μm, the spacing between adjacent grating structures ranging from 0 μm to 20 μm, and the period of the grating structures ranging from 0.45 μm to 0.55 μm.
  8. 8. The light guide module according to claim 1 or 2, wherein a light guide microstructure is further arranged on the first surface and/or the second surface, and a light incident surface of the light guide microstructure is a trapezoid plane, or an arc surface, or a combination of the plane and the arc surface.
  9. 9. The light guide module of claim 8, wherein the light guide microstructure has a length ranging from 20 μm to 200 μm, a width ranging from 5 μm to 20 μm, a depth ranging from 3 μm to 10 μm, and an included angle between the light incident surface of the light guide microstructure and the reflective surface of the light guide plate ranging from 30 ° to 55 °.
  10. 10. A display panel, comprising the light guide module of any one of claims 1-9.

Description

Light guide module and display panel Technical Field The present invention relates to the field of display technologies, and in particular, to a light guide module and a display panel. Background The light guide plate is a key core component in the backlight module and is used for providing a uniform surface light source. In general, a specific pattern is arranged on the reflective surface of the light guide plate, so that light coupled into the light guide plate is emitted through the specific arrangement structures to display the specific pattern, namely, the patterned light guide plate. The patterned light guide plate has certain advantages because of the capability of displaying specific design patterns, and can be applied to display panels of game machines and other display scenes. However, with the continuous progress of display technology, consumers have higher requirements on display effects, and how to improve the display effects of the patterned light guide plate, such as color display, dynamic display, and stereoscopic display of patterns, is a problem to be solved in the use of the patterned light guide plate for display. Disclosure of Invention Accordingly, the present invention is directed to an improved light guide module and display panel, which solve at least one of the above problems. In a first aspect, the present application provides a light guide module, including: the light guide plate comprises a substrate and a microstructure layer arranged on the substrate, wherein the substrate is provided with a first surface, a second surface opposite to the first surface and a light incident surface connecting the first surface and the second surface, the microstructure layer is arranged on the first surface and comprises a plurality of groups of grating structures, the grating structures of different groups correspond to different display patterns, and the light guide plate comprises a light guide plate body and a light guide plate body At least one light source configured to project light toward the light incident surface so that the light is conducted in the light guide plate; The light emitted by the light source is coupled out of the light guide plate after passing through the light incident surface and the same group of grating structures, and is converged at the observation view point corresponding to the group of grating structures on the same side and/or opposite sides of the group of grating structures. According to the light guide module, different grating structures are arranged on the light guide plate, and the three-dimensional patterns or dynamic patterns can be displayed under the irradiation of the corresponding light source, so that the display effect of the patterned light guide plate is enriched. In one embodiment, the sets of grating structures in the microstructure layer are configured to nest with each other and have no overlapping portions. In one embodiment, the light guide module is provided with a single light source, and when the single light source is lightened, the light rays emitted by the light source are coupled out of the light guide plate after passing through the light inlet surface and the multiple groups of grating structures and are converged at different observation viewpoints. In one embodiment, the interval angle of the adjacent observation viewpoints ranges from 1 ° to 10 °. In one embodiment, the light guide module is provided with a plurality of light sources, the positions and/or wavelengths of the different light sources are different, the light sources are in one-to-one correspondence with the plurality of groups of grating structures, and when the light sources are sequentially lightened, light rays emitted by the light sources are coupled out from the light guide plate after passing through the light inlet surface and the corresponding grating structures and are converged at the same observation point. In one embodiment, the period and/or orientation of the grating structures of the different sets are different. In one embodiment, the length or width of the grating structures ranges from 10 μm to 200 μm, the distance between adjacent grating structures ranges from 0 μm to 20 μm, and the period of the grating structures ranges from 0.45 μm to 0.55 μm. In one embodiment, the first surface and/or the second surface is further provided with a light guiding microstructure, and a light incident surface of the light guiding microstructure is a trapezoid plane, or an arc surface, or a combination of the plane and the arc surface. In one embodiment, the light guiding microstructure has a length ranging from 20 μm to 200 μm, a width ranging from 5 μm to 20 μm, a depth ranging from 3 μm to 10 μm, and an included angle between the light incident surface of the light guiding microstructure and the reflecting surface of the light guiding plate ranging from 30 ° to 55 °. In a second aspect, the present application provides a display panel, including a light gui