Triode control type hybrid structure full-color display device and manufacturing method thereof

Abstract

The invention relates to a triode control type hybrid structure full-color display device and a manufacturing method thereof. According to the invention, a low-power variable input signal is respectively applied between a first contact electrode and a second contact electrode SCE1 and between the first contact electrode and a third contact electrode SCE2, a forward bias voltage is respectively applied between the first contact electrode and a fourth contact electrode TCE1 and between the first contact electrode and a fifth contact electrode TCE2; a blue light emitting chip in the unit B is driven to emit blue light, a blue light emitting chip in the unit R is driven to emit blue light so as to excite a red conversion layer to emit red light, a voltage is applied between a cathode and a transparent anode in the unit G, green light is excited, and thus full-color display is achieved. According to the invention, the first triode and the second triode amplify the power of an input signal,so that the light-emitting chip is driven to emit light by using a low-power input signal, the design complexity of a driving circuit of the light-emitting device can be effectively reduced, and the integration level of the display device is improved.

Description

technical field [0001] The invention relates to the design field of display semiconductor light-emitting devices, and relates to a triode-regulated hybrid structure full-color display device and a manufacturing method thereof. Background technique [0002] Light-emitting diodes (LEDs) are increasingly used in display applications due to their long life, small size, low power consumption, high brightness, and fast response. However, with the rapid development of information technology, traditional display technology can no longer meet the existing needs, and new micro-display technology with low power consumption, high brightness, wide color gamut, and ultra-high resolution has become more and more important. Micron-scale light-emitting diode (μLED) refers to the miniaturization of traditional LEDs to form a micron-scale pitch LED array to achieve ultra-high-density pixel resolution. It can be widely used in flexible, transparent displays, AR, VR and other fields. It is the m...

AI Technical Summary

Problems solved by technology

For the RGB three-color chip method, it is still difficult to grow RGB three-color chips with different wavelengths on the same substrate, and the three colors must be driven separately, the driving circuit is complicated and the cost is high.

Other preparation methods also have problems such as full-color display deviation, low light conversion efficiency, uneven coating of luminescent medium, high preparation cost, harsh processing conditions, and unfavorable large-area production. Therefore, it is not conducive to the realization and development of high-quality commercial LED products. application

Chinese patent CN201810863787.2 discloses a full-color micro-LED device based on an inorganic / organic semiconductor hybrid structure and its preparation method. RGB three-color modules are prepared on the same substrate, and the blue part is GaN epitaxy The red light and green light are vapor-deposited organic materials. This technology combines organic semiconductor materials and inorganic semiconductor materials. It has the advantages of high efficiency, wide color gamut, and low power consumption. High, 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 μLEDs, complex driving circuits are not conducive to the construction of highly integrated systems

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