一种混光高电压mini-RGBCSP背光光源
By using a three-row, three-column array layout and a series-connected light-emitting chip design, the problems of uneven light mixing and high-voltage chip detection in mini RGB backlight sources have been solved, achieving a high-brightness, low-cost backlight source effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG MULENSEN SMART LIGHT CO LTD
- Filing Date
- 2025-10-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing mini RGB backlight sources require mini-zone dimming, which places high demands on the overall brightness of the device. This results in large deviations in the position of the RGB chips, affecting the light mixing effect. Furthermore, the testing and selection of high-voltage chips are difficult.
The light-emitting chips adopt a three-row, three-column array layout, with adjacent chips distributed at equal intervals and connected in series. Combined with the RDL circuit layer and optical ball head on the substrate, the chip spacing and light mixing effect are optimized, and it is adapted to a high-voltage driving architecture.
It significantly improves light mixing uniformity and color purity, simplifies circuit layout process, reduces the driving cost of a single chip, and ensures high-voltage, wide-angle light output performance.
Smart Images
Figure CN224519088U_ABST
Abstract
Claims
1. A mixed light high voltage mini-RGB CSP backlight, characterized in that, The system includes a substrate (1) and a plurality of light-emitting chips (11) disposed on the substrate (1) respectively mapping red light, green light and blue light. The light-emitting chips (11) are arranged in a three-row, three-column array. Each row or each column has three light-emitting chips (11) respectively mapping red light, green light and blue light. Adjacent light-emitting chips (11) are distributed at equal intervals and adjacent chips are constrained by different colors. Light-emitting chips (11) mapping the same color are connected in series.
2. A mixed light high voltage mini-RGB CSP backlight according to any one of claim 1, characterized in that, At the center of the array is a light-emitting chip (11) that maps red light.
3. The mixed light high voltage mini-RGB CSP backlight according to any one of claim 1, wherein, At the center of the array is a light-emitting chip (11) that maps green light.
4. The mixed light high voltage mini-RGB CSP backlight according to any one of claims 1, wherein, At the center of the array is a light-emitting chip (11) that maps blue light.
5. The mixed-light high-voltage mini-RGB CSP backlight source according to any one of claims 1-4, characterized in that, The side length of each substrate (1) is a, 1mm≤a≤2mm, and the spacing between adjacent light-emitting chips (11) is d, 5um≤d≤50um.
6. A mixed light high voltage mini-RGB CSP backlight according to any one of claims 1-4, characterized in that, The substrate (1) is an RDL circuit layer having two insulating layers and three metal layers for connecting all the light-emitting chips (11) of the same color in series.
7. The mixed light high voltage mini-RGB CSP backlight according to any one of claims 1-4, wherein, The light-emitting chip (11) has a baffle layer (2) for reflecting light on the side away from the substrate (1).
8. The mixed light high voltage mini-RGB CSP backlight according to any one of claims 1-4, wherein, The side of the light-emitting chip (11) away from the substrate is filled with a transparent layer (3) to facilitate subsequent processing.
9. The mixed-light high-voltage mini-RGB CSP backlight source according to any one of claims 8, characterized in that, The transparent layer (3) has a scattering layer (4) on the side away from the substrate to improve the light mixing effect.
10. The mixed light high voltage mini-RGB CSP backlight according to any one of claims 1-4, wherein, The light-emitting chip (11) has an optical ball head (5) on its outer side for improving the light emission angle of the light source.