<title>6-bit multiresolution digital-to-analog converter for low-temperature polysilicon digital drivers</title>

Abstract

A key requirement for the development of advanced digital drivers for Low Temperature Poly-Silicon (LTPS) active matrix displays is the provision of a high bandwidth, high resolution Digital to Analogue Converter (DAC) as a prerequisite for higher level integration. For a given panel specification and data rate, the bandwidth and resolution of the conversion process directly influence the efficiency of a digital driver implementation in terms of bezel size, transistor count and power consumption. This paper is concerned with the design and realization of a programmable high performance DAC architecture which meets the requirements for a compact and highly efficient digital data driver. The high performance of the two-stage architecture is achieved by means of a novel pre-charge arrangement that not only increases the speed of operation, but also provides for offset compensation of an analogue buffer with considerably reduced slew rate requirements and power consumption. A switched capacitor implementation of the DAC architecture is presented and the theoretical specifications are verified by simulation. The application of the new architecture to advanced digital drivers with programmable input data resolution is briefly discussed.

Design of a TFT-LCD Based Digital Automobile Instrument

“…Therefore, gamma correction is needed. Several approaches to gamma correction are discussed in [20][21][22]. For this specific 7-inch LCD, only the producer knows the relationship between the voltage sent to the LCD and the intensity it produces.…”

Comprehensive study of variability in poly-Si channel nanowire transistor

“…Poly-Si thin film transistor has been investigated for the display applications for long time. [1][2][3][4][5][6][7][8][9][10][11] Recently, poly-Si channel has been also attracted much attentions as key channel material for 3D LSIs. [12][13][14][15][16][17][18][19] However, the poly-Si channel has two main issues which are poor on-current and variability due to the grain boundaries.…”

Poly-Si TFT Technology: Advances in Material, Process and Device Technology

“…Such integration not only reduces the amount of external interconnections to the panel, but also improves the form-factor of the resulting display. The improved performance of poly-Si TFTs is expected to further yield increasing levels of component integration that will enable the fabrication of unique display systems (4).…”