Importance

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Abstract

This disclosure provides systems, methods, and apparatus for reducing ambient light reflection in a display device having a backplane incorporating low-temperature polycrystalline silicon (LTPS) transistors. Ambient reflection can be reduced by incorporating both conductive and non-conductive light-absorbing materials into the display backplane. A light-absorbing conductive material that can withstand the temperatures generated by laser annealing of LTPS transistor channels can be deposited and patterned such that its footprint substantially coincides with the footprints of the LTPS channels. After the LTPS channels are fabricated, a light-absorbing dielectric material can be deposited with a footprint extending at least below the footprints of other reflective components of the backplane to be positioned above the light-absorbing dielectric material. Together, the light-absorbing conductive material and the light-absorbing dielectric material can obstruct substantially all of the reflective surfaces within the backplane, thereby reducing reflection of ambient light by the backplane.

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First Claim