Dual-sided display

Abstract

A double-sided display includes a first substrate, a second substrate, a circuit structure, a reflective layer, a plurality of first pixels, a plurality of second pixels, and an isolation structure. The second substrate is stacked on the first substrate. The circuit structure and the reflective layer are formed on the first substrate and the second substrate, respectively. Each first pixel includes a first light-emitting diode (LED) bonded to the circuit structure. The circuit structure is configured to at least partially block light emitted from the first LED toward the first substrate. Each second pixel includes a second LED bonded to the circuit structure. The reflective layer is configured to reflect light emitted from the second LED toward the second substrate. The isolation structure is formed on the second substrate. The first pixels and the second pixels are surrounded by the isolation structure.

Claims

1. A double-sided display, comprising: A circuit structure, including a first scan line and a second scan line; A first data line and a second data line; a first light-emitting signal line and a second light-emitting signal line; a reference voltage signal line, a first operating voltage signal line and a second operating voltage signal line; a first pixel control circuit, comprising: a first switching transistor, wherein the gate of the first switching transistor is electrically connected to the first scan line, and the first source / drain of the first switching transistor is electrically connected to the first data line; a first driving transistor; a first auxiliary transistor, wherein the gate of the first auxiliary transistor is electrically connected to the second scan line, and the first source / drain of the first auxiliary transistor is electrically connected to the reference voltage signal line; a first capacitor, wherein the first... A capacitor has its first terminal electrically connected to the second source / drain of the first auxiliary transistor, the first source / drain of the first driving transistor, and the first operating voltage signal line, and its second terminal electrically connected to the second source / drain of the first switching transistor and the gate of the first driving transistor; a first light-emitting control transistor, wherein the gate of the first light-emitting control transistor is electrically connected to the first light-emitting signal line, and the first source / drain of the first light-emitting control transistor is electrically connected to the second source / drain of the first driving transistor; and a second pixel control circuit, including: a second switching transistor, wherein the gate of the second switching transistor is electrically connected to the first operating voltage signal line. To the first scan line, the first source / drain of the second switching transistor is electrically connected to the second data line; a second driving transistor; a second auxiliary transistor, wherein the gate of the second auxiliary transistor is electrically connected to the second scan line, and the first source / drain of the second auxiliary transistor is electrically connected to the reference voltage signal line; a second capacitor, wherein the first terminal of the second capacitor is electrically connected to the second source / drain of the second auxiliary transistor, the first source / drain of the second driving transistor, and the first operating voltage signal line, and the second terminal of the second capacitor is electrically connected to the second source / drain of the second switching transistor and the gate of the second driving transistor; a second A second light-emitting control transistor, wherein the gate of the second light-emitting control transistor is electrically connected to the second light-emitting signal line, and the first source / drain of the second light-emitting control transistor is electrically connected to the second source / drain of the second driving transistor; a first light-emitting diode, electrically connected to the second source / drain of the first light-emitting control transistor and the second operating voltage signal line; and a second light-emitting diode, electrically connected to the second source / drain of the second light-emitting control transistor and the second operating voltage signal line, wherein the second light-emitting diode is configured to cause the first side of the double-sided display to emit light, and the first light-emitting diode is configured to cause the second side of the double-sided display to emit light.

2. The double-sided display as described in claim 1, further comprising: A first substrate and a second substrate superimposed on the first substrate, wherein the circuit structure is formed on the first substrate and the circuit structure is configured to at least partially block light emitted by the first light-emitting diode toward the first substrate; a reflective layer is formed on the second substrate and the reflective layer is configured to reflect light emitted by the second light-emitting diode toward the second substrate; and an isolation structure is formed on the second substrate, wherein the first light-emitting diode and the second light-emitting diode are surrounded by the isolation structure.

3. The double-sided display as claimed in claim 2, wherein the isolation structure includes a plurality of isolation elements separated from each other, and the first light-emitting diode and the second light-emitting diode are each surrounded by a corresponding one of the isolation elements.

4. The double-sided display as claimed in claim 2, wherein the isolation structure has a transmittance of less than 10% for visible light.

5. The double-sided display as claimed in claim 2, wherein the circuit structure includes a first light-shielding layer located between the first substrate and the isolation structure and having a plurality of first openings, the first openings respectively overlapping the first light-emitting diode and the second light-emitting diode.

6. The double-sided display as described in claim 2, further comprising: A second light-shielding layer is located between the isolation structure and the second substrate, and has a second opening, at least a portion of which overlaps with the first light-emitting diode.

7. The double-sided display as claimed in claim 6, wherein the second light-shielding layer extends between the reflective layer and the second substrate, and the second light-shielding layer overlaps the reflective layer and the second light-emitting diode.

8. The double-sided display as claimed in claim 1, wherein the first light-emitting diode is bonded to two first pads of the circuit structure, and the second light-emitting diode is bonded to two second pads of the circuit structure, wherein the gap between the two second pads overlaps a transparent area of ​​the circuit structure.

9. The double-sided display as claimed in claim 1, wherein the first light-emitting diode is coupled to two first pads of the circuit structure, and the second light-emitting diode is coupled to two second pads of the circuit structure, wherein the distance between the two first pads is less than the distance between the two second pads.

10. The double-sided display as claimed in claim 1, wherein the first light-emitting diode is coupled to two first pads of the circuit structure, and the second light-emitting diode is coupled to two second pads of the circuit structure, wherein the ratio of the distance between the two second pads to the length of the second light-emitting diode is less than 1 and greater than 0.3.

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