Display device

A display device includes a carrier, a substrate unit, a plurality of light emitting elements and a circuit unit. The carrier has a top surface and a bottom surface opposite to each other, and a peripheral surface interconnecting the top and bottom surfaces. The substrate unit is disposed on one side of the peripheral surface of the carrier. The light emitting elements are spacedly disposed on the top surface of the carrier. The circuit unit includes a plurality of circuit modules that are disposed on the substrate unit and that are electrically connected to the light emitting elements. Each of the circuit modules includes a switch control circuit and a driving circuit that are configured to control the light emitting elements.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority of Taiwanese Invention Patent Application No. 109104889, filed on Feb. 15, 2020.

FIELD

The disclosure relates to a display device, and more particularly to a display device including a light source and a circuit unit disposed on different supporting members.

BACKGROUND

A conventional display device includes a plurality of display panels, each of which contains a circuit board having opposite top and bottom surfaces, a plurality of light emitting diodes (LEDs) that are disposed on the top surface of the circuit board, and a plurality of circuit modules that are disposed on the bottom surface of the circuit board and that are electrically connected to the LEDs so as to control the luminescence characteristics of the LEDs.

As there is a growing trend in development of display devices with high resolution, the amount of the LEDs and the amount or pins of the corresponding circuit modules per unit area on each of the display panels are thereby increased.

However, in order to dispose the LEDs and the circuit modules on the opposite top and bottom surfaces of the circuit board in a relatively high density, the amounts of output pins and input pins will be inevitably increased, and the corresponding circuit layouts will become more complicated. Therefore, the circuit board is generally fabricated to have a multi-layered structure (such as 8 to 10 or more composite layers), so as to cope with the high density of the LED settings and the complicated circuit layouts, which in turn might increase the difficulty of manufacturing the display device and incur a high manufacturing cost.

SUMMARY

Therefore, an object of the disclosure is to provide a display device that can alleviate at least one of the drawbacks of the prior art.

According to the disclosure, the display device includes a carrier, a substrate unit, a plurality of light emitting elements and a circuit unit.

The carrier has a top surface and a bottom surface opposite to each other, and a peripheral surface interconnecting the top and bottom surfaces. The substrate unit is disposed on one side of the peripheral surface of the carrier. The light emitting elements are spacedly disposed on the top surface of the carrier. The circuit unit includes a plurality of circuit modules that are disposed on the substrate unit and that are electrically connected to the light emitting elements. Each of the circuit modules includes a switch control circuit and a driving circuit that are configured to control the light emitting elements.

DETAILED DESCRIPTION

Referring toFIG.1, a first embodiment of the display device according to this disclosure includes a carrier2, a substrate unit3, a plurality of light emitting elements4, a circuit unit5and an electrical connection unit6.

The carrier2has a top surface21and a bottom surface opposite to each other, and a peripheral surface22interconnecting the top surface21and the bottom surface. The carrier2may be a printed circuit board, a glass board, or a wafer, but is not limited thereto.

The substrate unit3is disposed on one side of the peripheral surface of the carrier2, and is spaced apart from the carrier2. The substrate unit3may be a printed circuit board, a glass board, and a polyimide film, but is not limited thereto.

The light emitting elements4are spacedly disposed on the top surface of the carrier2. Each of the light emitting elements4may be a light-emitting diode (LED), such as a micro LED.

The circuit unit5includes a plurality of circuit modules51that are disposed on the substrate unit3and that are electrically connected to the light emitting elements4. Each of the circuit modules51may include a switch control circuit511and a driving circuit512that are configured to control the light emitting elements4. In this embodiment, the switch control circuit511and the driving circuit512are arranged together, so as to coordinate a plurality of the circuit modules51on the substrate unit3.

The electrical connection unit6is configured to electrically connect the light emitting elements4to the circuit unit5. An example of the electrical connection unit6may be, but is not limited to, an electrical cable.

In this embodiment, by virtue of disposing the light emitting elements4and the circuit unit5respectively on the carrier2and the substrate unit3(i.e., on different supporting members), the display device having reduced number of layers and thickness can be manufactured, so as to simplify the manufacturing process and to lower the manufacturing cost, thereby enhancing the manufacturing yield.

Referring toFIG.2toFIG.4, a second embodiment of the display device according to this disclosure is similar to the first embodiment, except that in the second embodiment, the substrate unit3includes a first substrate31and a second substrate32, and the switch control circuit511and the driving circuit512are separated from each other and are disposed on the first and the second substrates31,32, respectively.

The first substrate31and the second substrate32may be located at different sides of the peripheral surface22of the carrier2. In this embodiment, the peripheral surface22of the carrier2is in a rectangular shape, and the first and second substrates31,32are located on two adjacent sides of the peripheral surface22. The switch control circuit511and the driving circuit512respectively disposed on the first and second substrates31,32are electrically connected to the light emitting elements4on the carrier2through the electrical connection unit6.

It should be noted that, the location of the first and the second substrates31,32on the peripheral surface22are not specifically limited, and may be varied according the practical requirement. For example, in a variation of the second embodiment, the first and the second substrates31,32are disposed on opposite sides of the peripheral surface22of the carrier2(seeFIG.3). In another variation of the second embodiment, the first and the second substrates31,32are disposed on the same side of the peripheral surface22of the carrier2(seeFIG.4).

Referring toFIG.5, in yet another variation of the second embodiment, each of the first substrate31and the second substrate32is a film made of a soft material, and is directly attached to the peripheral surface22of the carrier2without the electrical connection unit6.

Referring toFIG.6, a third embodiment of the display device according to this disclosure is similar to the second embodiment, except that in the third embodiment, the substrate unit3further includes a third substrate33, and the circuit unit5further includes a sequential control circuit52which is disposed on the third substrate33and which is electrically connected to the switch control circuit511and the driving circuit512.

Specifically, the third substrate33is disposed between the first substrate31and the second substrate32, and the sequential control circuit52is electrically connected to the switch control circuit511and the driving circuit512via the electrical connection unit6. It should be noted that the location of the sequential control circuit52is not limited specifically, and may be varied based on practical requirements. For example, the sequential control circuit52may be disposed on the first substrate31and/or the second substrate32. In such case, the third substrate33may be omitted therefrom.

In sum, by way of disposing the light emitting elements4and the circuit unit5respectively on the carrier2and the substrate unit3(i.e., on different supporting members), the display device of this disclosure can be manufactured with reduced number of layers and thickness, so that the manufacturing process and cost thereof can be greatly reduced, thereby improving the manufacturing yield.