A 10-bit 1026-Channel Column Driver IC With Partially Segmented Piecewise Linear Digital-to-Analog Converters for UHD TFT-LCDs With One Billion Color Display
| Autor: | Xing-Wei Huang, You-Gang Chang, Cheng Jhih-Siou, Jenny Yi-Chun Liu, Tsin-Yuan Chang, Chou Chih-Hsien, Poki Chen, Po-Yu Tseng, Chih-Wen Lu, Pei-Yi Lai Lee |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Liquid-crystal display Settling time 020208 electrical & electronic engineering Transistor 02 engineering and technology Logic level Topology Capacitance law.invention law Color depth 0202 electrical engineering electronic engineering information engineering Operational amplifier Electrical and Electronic Engineering Resistor |
| Zdroj: | IEEE Journal of Solid-State Circuits. 54:2703-2716 |
| ISSN: | 1558-173X 0018-9200 |
| DOI: | 10.1109/jssc.2019.2927444 |
| Popis: | A 10-bit 1026-channel column driver IC with partially segmented piecewise linear digital-to-analog converters (DACs) was designed, simulated, and prototyped. This device is intended to improve the color depth of ultra-high-definition thin-film transistor liquid-crystal displays. The proposed column driver can output a precise gamma-corrected transfer curve without any loss of effective bit resolution. The overall chip area of the driver IC is minimized by including an area-efficient two-voltage selector, a 2-to-4 decoder embedded level shifter, and a DAC-embedded $g_{\text {m}}$ -modulation operational amplifier with linearity-enhanced differential pairs. A maximum inter-chip deviation voltage of output (DVO) of 16 mV was measured from five of the proposed column-driver ICs. The die dimensions of the 1026-channel column driver IC are of only 18.14 mm $\times $ 1.2 mm. The maximum settling time of the prototype is 5.6 $\mu \text{s}$ when driving a load with 5- $\text{k}\Omega $ resistance and 300-pF capacitance within 10-mV tolerance of the final voltage. |
| Databáze: | OpenAIRE |
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