Semiconductor hybrid full-color tripolar light-emitting tube display device and manufacturing method

Abstract

The invention relates to a semiconductor hybrid full-color tripolar light-emitting tube display device and a manufacturing method. The semiconductor hybrid full-color tripolar light-emitting tube display device comprises a substrate, a first contact electrode, a B unit, a G unit and an R unit, wherein the B unit, the G unit and the R unit are arranged on the substrate, distributed in the transverse direction and used for displaying blue light, green light and red light respectively; a low-power variable input signal is respectively applied between the first contact electrode and a second contact electrodes in the B unit and the G unit, and a forward bias voltage is respectively applied between the first contact electrode and a third contact electrodes in the B unit and the G unit so as todrive the B unit and the G unit to excite blue light and green light; and a voltage is applied between a cathode and a transparent anode in the R unit to excite red light, so that full-color display is realized. According to the invention, the light-emitting chip can be driven to emit light by adopting a low-power input signal, so that semiconductor hybrid full-color display is realized.

Description

technical field [0001] The invention relates to the design field of display semiconductor light-emitting devices, in particular to a semiconductor hybrid full-color triode light-emitting tube display device and a manufacturing method. Background technique [0002] Light-emitting diodes (LEDs) are increasingly used in display applications due to their advantages such as long life, small size, low power consumption, high brightness, and fast response. However, with the rapid development of information technology, the rise of virtual display, augmented reality and wearable devices, information presentation methods are becoming more and more diverse. Traditional display technology can no longer meet the existing needs. New low-power, high-brightness , wide color gamut, ultra-high resolution micro-display technology is becoming more and more important. Micron-scale light-emitting diode (μLED) refers to the miniaturization of traditional LEDs to form a micron-scale pitch LED arra...

AI Technical Summary

Problems solved by technology

[0003] Generally, LEDs are monochromatic light sources. If they want to be used in display, they must realize multi-color emission or white light emission. At present, the method of μLED full-color display is mainly the RGB three-color chip method, but RGB with different wavelengths is grown on the same substrate. Three primary color chips, the preparation process is still relatively difficult

Chinese patent CN201810863787.2 discloses a full-color μLED device based on an inorganic / organic semiconductor hybrid structure and its preparation method. An RGB three-color module is prepared on the same substrate, in which the blue part is a GaN epitaxial wafer. Red light and green light are evaporated organic materials. This technology combines organic semiconductor materials and inorganic semiconductor materials, and has the advantages of high efficiency, wide color gamut, and low power consumption. However, its peripheral amplification and driving circuits are more complex and costly. , which is not conducive to the construction of highly integrated systems

Although this driving method is more general, the low-power signal output by the control chip often cannot directly drive the LED, and power amplification is required in the middle.

These power amplifier circuits will significantly increase the design complexity of the drive circuit

Especially for μLED display, the complex driving circuit is not conducive to the high integration of the display system

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