CN205992385U - A kind of LED display device - Google Patents

Abstract

The utility model discloses a LED display device belongs to semiconductor technical field. The LED display device comprises a circuit substrate and a plurality of LED chips arranged on the circuit substrate, wherein the colors of the LED chips comprise at least one of red, green and blue, the LED chips are communicated with lines laid on the circuit substrate through a connecting bridge, the LED chips comprise a substrate and an N-type layer, a light-emitting layer and a P-type layer which are sequentially stacked on the substrate, a groove extending to the N-type layer is formed in the P-type layer, an N-type electrode is arranged at the center of the N-type layer, and a P-type electrode is arranged at the edge of the P-type layer. The utility model discloses a LED display device.

Description

A kind of LED display device

technical field

The utility model relates to the technical field of semiconductors, in particular to an LED display device.

Background technique

Liquid crystal displays, active matrix organic light emitting diode panels (Active Matrix/Organic Light Emitting Diode, AMOLED for short), etc. are currently common small-size displays. At present, the common small-sized displays all have the problem of limited brightness, which makes it impossible for people to see the displayed images under strong light.

With the wide application of Light Emitting Diode (LED for short) in the field of display and lighting, a display device composed of micron-scale LED (Micro LED) chips can be used to replace the current common small-size display. Because the display device composed of LED chips has the characteristics of high brightness, people can clearly see the displayed image under strong light. But there is no specific technology for making LED display devices at present.

Utility model content

In order to solve the problems in the prior art, the embodiment of the utility model provides an LED display device. Described technical scheme is as follows:

The embodiment of the utility model provides a light-emitting diode (LED) display device. The LED display device includes a circuit substrate and a plurality of LED chips arranged on the circuit substrate. The colors of the plurality of LED chips include red and green. At least one of blue and blue, the LED chip and the circuit laid on the circuit substrate are connected through a connecting bridge, the LED chip includes a substrate, and N-type layers stacked on the substrate in turn , a light-emitting layer, a P-type layer, the P-type layer is provided with a groove extending to the N-type layer, the center of the N-type layer is provided with an N-type electrode, and the edge of the P-type layer is provided with a P type electrode.

Optionally, the P-type layer extends to the sidewall of the N-type layer, and the sidewall of the P-type layer extends to the substrate is provided with an insulating layer.

Optionally, the insulating layer is a reflective layer or a transparent layer.

Optionally, the size of the LED chip is 20-80 μm.

The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

Through the circuit substrate and a plurality of LED chips arranged on the circuit substrate, the colors of the plurality of LED chips include at least one of red, green and blue, and the LED chips and the lines laid on the circuit substrate are connected through a connecting bridge, The LED chip includes a substrate, and an N-type layer, a light-emitting layer, and a P-type layer stacked on the substrate in sequence. A groove extending to the N-type layer is opened on the P-type layer, and an N-type electrode is arranged in the center of the N-type layer. , the edge of the P-type layer is provided with a P-type electrode to realize an LED display device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

FIG. 1 is a schematic structural diagram of an LED display device provided by an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

Example

The embodiment of the utility model provides an LED display device. Referring to FIG. 1, the LED display device includes a circuit substrate 40 and a plurality of LED chips 60 arranged on the circuit substrate 40. The colors of the plurality of LED chips 60 include red, At least one of green and blue, the LED chip 60 and the circuit laid on the circuit substrate 40 are connected through the connecting bridge 6, the LED chip 60 includes a substrate 4, and N-type layers stacked on the substrate 4 in sequence, The light emitting layer and the P-type layer 3 are provided with grooves extending to the N-type layer, the center of the N-type layer is provided with an N-type electrode 2 , and the edge of the P-type layer is provided with a P-type electrode 1 .

Optionally, an insulating layer 5 may be provided on the sidewall of the P-type layer extending to the N-type layer and the sidewall of the P-type layer extending to the substrate 4 .

Optionally, the insulating layer 5 may be a reflective layer or a transparent layer.

Optionally, the size of the LED chip 60 may be 20-80 μm, such as 50 μm.

The embodiment of the present invention uses a circuit substrate and a plurality of LED chips arranged on the circuit substrate. The colors of the plurality of LED chips include at least one of red, green and blue. The connection bridge is connected. The LED chip includes a substrate, and an N-type layer, a light-emitting layer, and a P-type layer stacked on the substrate in sequence. A groove extending to the N-type layer is opened on the P-type layer. The center of the N-type layer is set An N-type electrode is provided, and a P-type electrode is arranged on the edge of the P-type layer to realize an LED display device.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. A light-emitting diode LED display device, characterized in that, the LED display device comprises a circuit substrate and a plurality of LED chips arranged on the circuit substrate, and the colors of the plurality of LED chips include red, green and At least one of blue, the LED chip and the circuit laid on the circuit substrate are connected through a connecting bridge, the LED chip includes a substrate, and an N-type layer stacked on the substrate in sequence, A light-emitting layer and a P-type layer, the P-type layer is provided with a groove extending to the N-type layer, the center of the N-type layer is provided with an N-type electrode, and the edge of the P-type layer is provided with a P-type electrode. electrode. 2. The LED display device according to claim 1, wherein the P-type layer extends to the side wall of the N-type layer, and the P-type layer extends to the side wall of the substrate. There is insulation. 3. The LED display device according to claim 2, wherein the insulating layer is a reflective layer or a transparent layer. 4. The LED display device according to claim 1 or 2, characterized in that the size of the LED chip is 20-80 μm.