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US 7,599,025 B2Granted
Vertical pixel structures for emi-flective display and methods for making the same
AssigneeIndustrial Technology Research Institute
InventorsYung-Hui Yeh, Yu-Wu Wang, Yu-Lung Liu, Chi-Chang Liao, Hsing-Lung Wang
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Abstract
A vertical pixel structure for emi-flective display and a method thereof are provided. The vertical pixel structure has a substrate, a emitting pixel unit arranged on the substrate and a reflective pixel unit arranged on the emitting pixel unit. By using the vertical pixel structure the aperture of the display can be increased, and the power consumption can be reduced as well.
Claims31
A pixel structure for a vertical emi-flective display, comprising:
- a first substrate;
- a switch layer, disposed on the first substrate, wherein the switch layer comprises a first, a second and a third switch elements, each of which comprises a channel region, a source region and a drain region;
- a first insulating layer, disposed on the switch layer;
- a second insulating layer, disposed on the first insulating layer, and exposing a portion of the first insulating layer;
- a conductive layer, disposed on the exposed first insulating layer, wherein the conductive layer is divided into a common electrode layer, an anode layer and a cathode connecting layer, and the anode layer is electrically connected to the drain region of the second switch element and the cathode connecting layer is electrically connected to the drain region of the third switch element;
- a self-light emitting device layer, disposed on the anode layer of the conductive layer;
- a cathode layer, disposed on the self-light emitting device layer, and electrically connected to the cathode connecting layer;
- a third insulating layer, disposed on the second insulating layer and the cathode layer, wherein the common electrode layer is exposed by the third insulating layer;
- a reflective-type display unit module layer, disposed on the third insulating layer;
- and
- a second substrate, disposed on the reflective display unit module layer.
8 more elements
A full-color pixel structure for a vertical emi-flective display, comprising:
- a first substrate,
- a switch array layer, disposed on the first substrate, wherein each sub-pixel corresponding to the full-color pixels comprises a first, a second and a third switch elements, each switch element has a gate, a source and a drain;
- an anode layer, disposed on the switch array layer, comprising a first, a second and a third anodes, wherein the first, the second and the third anodes are respectively electrically connected to the drains of the corresponding second switch elements
- an insulating layer, disposed on the switch array layer and the anode layer, for electrically isolating the first, the second and the third anodes from each other and for exposing the first, the second and the third anodes;
- and
- a self-light emitting device layer, having a first self-light emitting device unit, a second self-light emitting device unit and a third self-light emitting device unit respectively disposed on the first anode, the second anode and the third anode;
- a cathode layer, disposed on the self-light emitting device unit layer and the insulating layer, comprising a first cathode, a second cathode and a third cathode electrically connected to the drains of the corresponding third switch elements;
- a passivation layer, disposed on the cathode layer, electrically isolating the first cathode, the second cathode and the third cathode from each other;
- a reflective-type display unit module layer, disposed on the passivation layer;
- and
- a second substrate disposed on the reflective-type display unit module layer.
8 more elements
Dependencies are inferred from the claim text.