- 标题
- 摘要
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- 实验方案
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An AMOLED Pixel Circuit Based on LTPS Thin-film Transistors with Mono-Type Scanning Driving
摘要： Using low-temperature poly-silicon thin-film transistors (LTPS TFTs) as a basis, a pixel circuit for an active matrix organic light-emitting diode (AMOLED) with narrow bezel displays was developed. The pixel circuit features mono-type scanning signals, elimination of static power lines, and pixel-integrated emitting control functions. Therefore, gate driver circuits of the display bezel can be simplified efficiently. In addition, the pixel circuit has a high-resolution design due to an increase of the pulse width of the scan signal to extend the threshold voltage and internal–resistance drop (IR drop) detection period. Further, regarding the influences of process–voltage–temperature (PVT) variation in the pixel circuit, comparison investigations were carried out with the proposed circuit and other pixel circuits with mono-type scanning signals using Monte Carlo analysis. The feasibility of the proposed pixel circuit is well demonstrated, as the current variations can be reduced to 2.1% for the supplied power reduced from 5 V to 3 V due to IR drop, and the current variation is as low as 10.6% with operating temperatures from –40 degrees to 85 degrees.
关键词： pixel circuit,AMOLED,IR drop,Monte Carlo,LTPS TFT
更新于2025-09-23 15:19:57
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High refresh rate and low power consumption AMOLED panel using top-gate n-oxide and p-LTPS TFTs
摘要： A pixel circuit and a gate driver on array for light-emitting display are presented. By simultaneously utilizing top-gate n-type oxide and p-type low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs), the circuits provide high refresh rate and low power consumption. An active-matrix LED (AMOLED) panel with proposed circuits is fabricated, and driving at various refresh rate ranging from 1 to 120 Hz could be achieved.
关键词： OLED,LTPO,gate driver,IGZO,pixel circuit,LTPS
更新于2025-09-23 15:19:57
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P‐16.1: Study of Active Matrix Circuits Design for Micro‐LED displays and Visible Light Communications
摘要： Because Micro-LED is the current-driven device, there are usually two types of the matrix driving circuit, passive matrix driving circuit, and active matrix driving circuit. Comparing these two driving circuits, the active driving circuit can achieve better brightness uniformity, higher contrast and lower contrast. Therefore, most of Micro-LEDs use active matrix driving circuit. In this paper, a study of active matrix circuit design for Micro- LED displays and beyond display applications such as visible light communication will be reported. The pixel circuit integrates two parts of VLC together, the emitter and the receiver. When the LED is on, it can work as the emitter of VLC. When the LED is off, the photodetector can work as the receiver of the VLC. This can offer more varieties of the application, such as face-to-face data transmission, under-screen fingerprint identification and so on.
关键词： pixel circuit,Micro-LED display,visible light communication
更新于2025-09-12 10:27:22