Patent ID: 8736937

Claim:
A pixel structure for use in a display device, the pixel structure utilizing a light entering from an ambient environment outside the display device as a light source, the pixel structure comprising: a first substrate; a light obstructing layer, disposed on the first substrate, having a transparent area and an opaque area, and further comprising a black matrix disposed in the opaque area of the light obstructing layer and adapted to obstruct the light; an active element, disposed on the opaque area of the light obstructing layer, and having a first state and a second state; an electrode layer, disposed between the active element and an adjustable light shielding layer and electronically connected to the active element; a hydrophobic layer, disposed on the electrode layer and between the light obstructing layer and the adjustable light shielding layer wherein the electrode layer is coextensive with the light obstructing layer, and the hydrophobic layer is coextensive with the electrode layer; a second substrate, disposed opposite to the first substrate; and a reflective layer, disposed on the second substrate and electrically connected to the active element, wherein the reflective layer reflects all the light entering from the ambient environment outside the display device, so that the reflected light emits outward from the first substrate through the transparent area; wherein the adjustable light shielding layer is disposed directly on the hydrophobic layer and when the active element is in the first state, a portion of the adjustable light shielding layer is positioned to cover the transparent area to shield the light from emitting out from the first substrate, and when the active element is in the second state, the portion of the adjustable light shielding layer is driven away from the transparent area to an area on the hydrophobic layer covering the opaque area, thereby uncovering the transparent area, so that the light is adapted to emit out from the transparent area and the first substrate.