Display panel and electronic device

A display panel and an electronic device are provided. The display panel includes a driving substrate, an insulating layer, which is provided with a first receiving groove and a second receiving groove, a first micro light emitting diode disposed in the first receiving groove, a second micro light emitting diode disposed in the second receiving groove, and a first reflective layer disposed above the second micro light emitting diode. The display panel and the electronic device can reduce a thickness of the display panel.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a U.S. National Phase of International PCT Application No. PCT/CN2019/115691 filed Nov. 5, 2019, which claims the benefit of Chinese Patent Application Serial No. 201910429166.8 filed May 22, 2019, the contents of each application are incorporated herein by reference in their entirety.

FIELD OF INVENTION

The present disclosure relates to the field of display technologies, and more particularly to a display panel and an electronic device.

BACKGROUND OF INVENTION

Double-sided display panel mean that front and back sides are provided with a display screen, the front side thereof is a main panel, the back side thereof is a sub-panel, and the main panel is usually a full-screen design. When a front panel is lit, a back panel is turned off, and the back panel can be used as a back plate when the back panel is turned off, which reduces power consumption to a certain extent.

Current self-illuminating double-sided display panels typically include two display panels, and then backs of the two display panels are bonded together or combined. Although such a double-sided display panel can realize double-sided display, two display panels are required, a thickness thereof is large.

SUMMARY OF INVENTION

An object of the present disclosure provides a display panel and an electronic device capable of reducing a thickness of the display panel.

In order to solve the above technical problems, an embodiment of the present disclosure provides a display panel. The display panel includes a driving substrate, an insulating layer, which is provided with a first receiving groove and a second receiving groove, a first micro light emitting diode disposed in the first receiving groove, a second micro light emitting diode disposed in the second receiving groove, and a reflective layer disposed above the second micro light emitting diode.

An embodiment of the present disclosure further provides an electronic device including the above display panel.

Beneficial effects of an embodiment of the present disclosure are that, in the display panel and the electronic device of the embodiment of the present disclosure, because two micro light emitting diodes are disposed on a single display panel, and a first reflective layer is disposed above the second micro light emitting diode, light of the second micro light emitting diode is emitted toward a back surface of the display panel, thereby realizing a double-sided display, and because the two display panels are not required, an overall thickness of the display panel is reduced.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The following description of the various embodiments is provided to illustrate the specific embodiments with reference to the accompanying drawings. Directional terms described by the present disclosure, such as top, bottom, front, back, left, right, inner, outer, side, etc., are only directions by referring to the accompanying drawings, and thus the used terms are used only for the purpose of describing embodiments of the present disclosure and are not intended to be limiting of the present disclosure. In the drawings, units with similar structures are labeled with the same reference number.

Referring toFIG. 1andFIG. 2, a display panel100of an embodiment of the present disclosure is a double-sided display panel.

The display panel100of the embodiment of the present embodiment includes a driving substrate10, an insulating layer20, a first micro light emitting diode31, and a second micro light emitting diode32. The display panel100may further include a planarization layer50.

A cross-sectional structure of the drive substrate10includes a base substrate11, a switch array layer12, and a pixel electrode13.

The switch array layer12is disposed on the base substrate11, which includes a plurality of thin film transistors.

The pixel electrode13is disposed on the switch array layer12. Material of the pixel electrode13may include Indium tin oxide (ITO).

The insulating layer20is provided with a first receiving groove21and a second receiving groove22. In an embodiment, in order to improve contrast, material of the insulating layer20is a light shielding material such as a black photoresist material.

The first micro light emitting diode31is disposed in the first receiving groove21.

The second micro light emitting diode32is disposed in the second receiving groove22, and a first reflective layer41is disposed above the second micro light emitting diode32. The first reflective layer41covers the second receiving groove22in order to improve the display performance. That is, a projection area of the first reflective layer41on the base substrate11is greater than a projection area of the second receiving groove22on the base substrate11.

The first micro light emitting diode31and the second micro light emitting diode32are adjacent to reduce a size of the display panel. In order to simplify a process, the pixel electrode13covers the first micro light emitting diode31and the second micro light emitting diode32, and the first micro light emitting diode31and the second micro light emitting diode32are both electrically connected to the pixel electrode13. That is to say, the two micro light emitting diodes share the pixel electrode, which can not only reduce a number of lines, but also make a current control more precise, thereby improving an accuracy of image color.

In an embodiment, a second reflective layer42is also disposed on a sidewall of the second receiving groove22in order to improve utilization of light.

In order to further improve utilization of light, in an embodiment, a third reflective layer43is also disposed on a sidewall of the first receiving groove21. Materials of the first reflective layer, the second reflective layer, and the third reflective layer may be same. In one embodiment, the first reflective layer41, the second reflective layer42, and the third reflective layer43are fabricated in a same process.

Referring toFIG. 3, the driving substrate10further includes a first thin film transistor T1and a second thin film transistor T2. A gate of the first thin film transistor T1is connected to a first scan signal S1, a source of the first thin film transistor T1is connected to a first data signal M1, a drain of the first thin film transistor T1is connected to a gate of the second thin film transistor T2, a source of the second thin film transistor T2is connected to power supply negative voltage VSS, and a drain of the second thin film transistor T2is connected to a cathode of the first micro light emitting diode31. In addition, the driving substrate10may further include a first capacitor C1. One end of the first capacitor C1is connected to the drain of the first thin film transistor T1, and another end of the first capacitor C1is connected to the source of the second thin film transistor T2.

The driving substrate10further includes a third thin film transistor T3and a fourth thin film transistor T4. A gate of the third thin film transistor T3is connected to a second scan signal S2, a source of the third thin film transistor T3is connected to a second data signal M2, and a drain of the third thin film transistor T3is connected to a gate of the fourth thin film transistor T4.

A source of the fourth thin film transistor T4is connected to the power supply negative voltage VSS, and a drain of the fourth thin film transistor T4is connected to a cathode of the second micro light emitting diode32. In addition, the driving substrate10may further include a second capacitor C2, one end of the second capacitor C2is connected to the drain of the third thin film transistor T3, and another end of the second capacitor C2is connected to the source of the fourth thin film transistor T4.

An anode of the first micro light emitting diode31and an anode of the second micro light emitting diode32are both connected to a positive power supply voltage VDD.

The planarization layer50is disposed on a top of the display panel, and material of the planarization layer50may be an insulating material.

Because two micro light emitting diodes are disposed on a single display panel, and a reflective layer is disposed above the second micro light emitting diode, light of the second miniature light emitting diode is emitted toward a back surface of the display panel (i.e., a bottom of the display panel, a direction of an arrow is as illustrated inFIG. 1), and the light emitted by the first micro light emitting diode is directed to a front surface of the display panel, thus realizing double-sided display. Because two display panels are not required, an overall thickness of the display panel is reduced. In addition, production costs can be reduced.

An embodiment of the present disclosure also provides an electronic device, which includes the above display panel, and the electronic device can be a device such as a mobile phone or a tablet computer.

In the display panel and the electronic device of the embodiment of the present disclosure, because two micro light emitting diodes are disposed on a single display panel, and a first reflective layer is disposed above the second micro light emitting diode, light of the second micro light emitting diode is emitted toward a back surface of the display panel, thereby realizing a double-sided display, and because the two display panels are not required, an overall thickness of the display panel is reduced.

In summary, although the preferable embodiments of the present disclosure have been disclosed above. It should be noted that those of ordinary skill in the art can make a variety of improvements and substitutions on the premise of not deviating from the technical principle of the present disclosure, and these improvements and substitutions should be encompassed within the protection scope of the present disclosure.