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Micro-display active pixel circuit

A pixel circuit and micro-display technology, applied in static indicators, instruments, etc., can solve the problems of poor grayscale accuracy, uneven brightness, large temperature drift, etc., to reduce the impact, reduce on-resistance and charge injection effect, the effect of removing fluctuations or glitches

Pending Publication Date: 2022-03-04
LAKESIDE PHOTOELECTRONICS TECH JIANGSU CO
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AI Technical Summary

Problems solved by technology

[0004] Active drive is suitable for high-resolution displays, but due to changes in the electrical characteristics of transistors and OLEDs, it encounters problems of uneven brightness and poor grayscale accuracy and large temperature drift in each pixel
[0005] In the prior art, AMOLED often uses a voltage-type DAC to provide voltage and current to the pixel circuit, and the accuracy of the DAC will seriously affect the stability of the pixel current.

Method used

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Embodiment Construction

[0036] Below in conjunction with the accompanying drawings of the present invention in embodiments, the technical solutions in the embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention rather than all embodiments.

[0037] according to figure 1 , The micro display active pixel circuit including a display panel, Source driver module, Gatedriver Timing controller module and a module, Timing controller module is connected to the Source driver module and the power module Gate driver, Source driver Gate driver module and the display module are plate is electrically connected, Gamma Voltages module and the modules are connected Memory Source driver module, Source driver module communicate with the modules connected Memory;

[0038] Display panel means for carrying a plurality of pixels and displays an image, and includes a gate circuit, and the gate is electrically connected...

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PUM

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Abstract

The invention relates to the technical field of electronic circuits, in particular to a micro-display active pixel circuit. The invention provides a micro-display active pixel circuit which comprises a Timing controller module, the Timing controller module is electrically connected with a Source driver module and a Gate driver module, the Source driver module and the Gate driver module are both electrically connected with a display panel, the Gamma Voltages module and the Memory module are both connected with the Source driver module, and the Source driver module is in communication connection with the Memory module. According to the invention, the DAC module is adopted to convert the stable current, and the AND gate is matched to stabilize the pixel current and improve the pixel consistency.

Description

Technical field [0001] Technical Field The present invention relates to an electronic circuit, particularly relates to an active pixel circuit microdisplay. Background technique [0002] Micro light-emitting diode (micro OLED) displays are the most promising next-generation display, can be used depending on the driving mode can be classified into a passive drive (PMOLED) and an active drive (AMOLED). [0003] OLED microdisplay chip widely used in the military market, mainly for military Thermal Weapon Sight display, digital display soldier helmet, military infrared night vision, 3D simulation training and 5G virtual reality, augmented reality technology. Meanwhile, under the conditions 5G technology, the technology has broad civilian market. In AR / VR art, can be used for mobile Internet terminal display system, 3D glasses, virtual gaming system; in the field of consumer electronics, can be used for in-vehicle head up display (the HUD), high-end digital camera viewfinder (the EV...

Claims

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Application Information

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IPC IPC(8): G09G3/3233G09G3/3258
CPCG09G3/3233G09G3/3258
Inventor 安晓庆吴迪
Owner LAKESIDE PHOTOELECTRONICS TECH JIANGSU CO
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