Illumination – Display backlight
Reexamination Certificate
2006-12-18
2009-10-27
Negron, Ismael (Department: 2885)
Illumination
Display backlight
C174S252000, C349S069000, C362S294000, C362S800000, C362S373000
Reexamination Certificate
active
07607790
ABSTRACT:
Apparatuses for backlighting and manufacturing processes thereof are disclosed. There is provided a backlight module. The backlight module comprises a double-sided circuit board with thermal conducting material as one of the core layers; a plurality of light source components mounted on the first surface of the circuit board; and, a plurality of electronic components mounted on the second surface of the circuit board. The thermal conducting core layer discharges heat generated by the light source components. The circuit board has at least one window on the surface layer at the second surface to expose the thermal conducting core layer for thermal dissipation. As such, the component heights on the illuminating side of the circuit board are unified, and the reflector can be made as a smooth planar sheet to provide a more uniform backlight illumination compared to a single-side circuit board design. Further, such an arrangement reduces the complexity in manufacturing the reflector and hence the cost thereof.
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patent: 2005/0180142 (2005-08-01), Tsai
patent: 2006/0002142 (2006-01-01), Jeong et al.
Chen Shou Lung
Liu Ying
Ng Kwan Wah
Hong Kong Applied Science and Technology Research Institute Co.
May Robert J
Negron Ismael
Schneider, Esq. Ryan A.
Troutman Sanders LLP
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