A reflective display comprising: a. a reflective spatial light modulator; and b. a frontlight comprising: i) a lightguide formed from a film having opposing faces with a thickness not greater than 0.5 millimeters therebetween, the lightguide having an array of coupling lightguides continuous with a lightguide region of the lightguide, wherein: a) each coupling lightguide terminates in an input edge; and b) each coupling lightguide is folded in a fold region such that the input edges are stacked; ii) at least one light source disposed to emit light into the stacked input edges, the light propagating within the coupling lightguides to the lightguide region of the lightguide, with light from each coupling lightguide combining and totally internally reflecting within the lightguide region; iii) a plurality of light extraction features that frustrate totally internally reflected light within the lightguide region such that the light exits the lightguide toward the reflective spatial light modulator in a light emitting region of the film; and iv) a cladding region optically coupled on a first side to the lightguide wherein light from the at least one light source propagates into the cladding region, characterized by the frontlight further comprising a light extracting layer operatively coupled to the cladding region on a second side of the cladding region opposite the lightguide, such that a portion of the light that propagates into the cladding region is extracted from the cladding region by the light extracting layer. a. a reflective spatial light modulator; and b. a frontlight comprising: i) a lightguide formed from a film having opposing faces with a thickness not greater than 0.5 millimeters therebetween, the lightguide having an array of coupling lightguides continuous with a lightguide region of the lightguide, wherein: a) each coupling lightguide terminates in an input edge; and b) each coupling lightguide is folded in a fold region such that the input edges are stacked; ii) at least one light source disposed to emit light into the stacked input edges, the light propagating within the coupling lightguides to the lightguide region of the lightguide, with light from each coupling lightguide combining and totally internally reflecting within the lightguide region; iii) a plurality of light extraction features that frustrate totally internally reflected light within the lightguide region such that the light exits the lightguide toward the reflective spatial light modulator in a light emitting region of the film; and iv) a cladding region optically coupled on a first side to the lightguide wherein light from the at least one light source propagates into the cladding region, characterized by the frontlight further comprising a light extracting layer operatively coupled to the cladding region on a second side of the cladding region opposite the lightguide, such that i) a lightguide formed from a film having opposing faces with a thickness not greater than 0.5 millimeters therebetween, the lightguide having an array of coupling lightguides continuous with a lightguide region of the lightguide, wherein: a) each coupling lightguide terminates in an input edge; and b) each coupling lightguide is folded in a fold region such that the input edges are stacked; a) each coupling lightguide terminates in an input edge; and b) each coupling lightguide is folded in a fold region such that the input edges are stacked; ii) at least one light source disposed to emit light into the stacked input edges, the light propagating within the coupling lightguides to the lightguide region of the lightguide, with light from each coupling lightguide combining and totally internally reflecting within the lightguide region; iii) a plurality of light extraction features that frustrate totally internally reflected light within the lightguide region such that the light exits the lightguide toward the reflective spatial light modulator in a light emitting region of the film; and iv) a cladding region optically coupled on a first side to the lightguide wherein light from the at least one light source propagates into the cladding region,