Border masking structures for liquid crystal display

摘要

A display may have a thin-film transistor layer and color filter layer. The display may have an active area and an inactive border area. Light blocking structures in the inactive area may prevent stray backlight from a backlight light guide plate from leaking out of the display. The thin-film transistor layer may have a clear substrate, a patterned black masking layer on the clear substrate, a clear planarization layer on the black masking layer, and a layer of thin-film transistor circuitry on the clear planarization layer. The black masking layer may be formed from black photoimageable polyimide. The clear planarization layer may be formed from spin-on glass. The light blocking structures may include a first layer formed from a portion of the black masking layer and a second layer such as a layer of black tape on the underside of the color filter layer.

主权项

1. A display having an active area and an inactive border area, comprising:
display layers that include an array of display pixels in the active area, wherein the display layers include a color filter layer on a first display substrate and a thin-film transistor layer on a second display substrate; and light blocking structures in the inactive border area, wherein the light blocking structures include a first light blocking structure on the thin-film transistor layer and a second light blocking structure on the color filter layer, wherein the first light blocking structure comprises a patterned layer of polymer interposed between the thin-film transistor layer and the second display substrate, and wherein the patterned layer comprises openings that are free of the polymer.