一种车载背光源及车载显示设备
By setting an integrated light-blocking structure and sealing it with light-shielding adhesive at the U-shaped bend of the plastic iron, the light leakage problem of the vehicle-mounted backlight display screen is solved, improving display quality and stability and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SOUTH POLE OPTOELECTRONICS TECH
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-17
AI Technical Summary
In existing vehicle-mounted backlit displays, the gap between the light guide plate and the frame is too large, causing light to leak out and resulting in display problems such as light holes or abnormal colors.
An integrally formed light-blocking structure is set at the U-shaped bend of the plastic iron, with the thickness decreasing along the direction close to the light guide plate to seal the light leakage gap. The mating gap is sealed with light-blocking glue, and a reflective coating is set to improve light utilization efficiency.
It effectively solves the display problems caused by light leakage, improves the efficiency and utilization of light entry, ensures the stability and reliability of the backlight, and reduces production costs and difficulties.
Smart Images
Figure CN224518991U_ABST
Abstract
Claims
1. A vehicle-mounted backlight, characterized by comprising: include: The light strip, the adhesive plate, and a reflector, a light guide plate, a diffuser, a lower light-enhancing plate, and an upper light-enhancing plate arranged sequentially from bottom to top in the adhesive plate; the light guide plate has a light-incident surface; The light strip is disposed on the side of the adhesive iron facing the light-incident surface. The ends of the diffuser, lower brightening sheet and upper brightening sheet are located on the side of the light-incident surface away from the light strip. The adhesive iron has a U-shaped bend that extends toward the diffuser and covers the ends of the diffuser, lower brightening sheet and upper brightening sheet facing the light strip. The glued iron also has an iron frame and a glued frame. The glued frame located at the U-shaped bend has an integrally formed light-blocking structure on its end face facing the light guide plate. The thickness of the light-blocking structure decreases along the direction close to the light guide plate.
2. The vehicle-mounted backlight according to claim 1, characterized in that, A fitting gap is provided between the light-blocking structure and the light guide plate; The vehicle-mounted backlight is also provided with a light-shielding adhesive for sealing the mating gap. The first end of the light-shielding adhesive is bonded to the junction of the light guide plate and the diffuser sheet; the second end of the light-shielding adhesive is bonded to the light-blocking structure.
3. The vehicle-mounted backlight according to claim 2, characterized by, The light-blocking structure has an adhesive step on the side facing the diffuser, and the second end of the light-blocking adhesive is bonded to the adhesive step.
4. The vehicle-mounted backlight according to claim 2, characterized by, The end of the light-blocking structure facing the light guide plate is provided with a bent edge that is away from the diffuser sheet, and the second end of the light-blocking adhesive is bonded to the bent edge.
5. The vehicle-mounted backlight of claim 1, wherein, The end of the light-blocking structure away from the U-shaped bend is abutted against the light guide plate, and the end of the light-blocking structure away from the U-shaped bend can be elastically deformed.
6. The vehicle-mounted backlight of claim 1, wherein, The end of the light-blocking structure that abuts against the light guide plate is designed as an arc structure.
7. The vehicle-mounted backlight of claim 1, wherein, The light-blocking structure is provided with a first reflective coating.
8. The vehicle-mounted backlight of claim 1, wherein, The end of the light guide plate away from the light incident surface is provided with a second reflective coating or reflective patch.
9. The vehicle-mounted backlight according to any one of claims 1 to 8, characterized by, The diffuser, lower brightening sheet, and upper brightening sheet are all provided with a third reflective coating on their ends facing the light bar.
10. A vehicle-mounted display device characterized by comprising: Including the vehicle-mounted backlight as described in any one of claims 1-9.