Objective
Purpose of this project is to carry out research leading to the development of a 1280 x 1024 (SXGA) silicon backplane anti-ferroelectric liquid crystal (AFLC) display device using analogue greyscale techniques. Two application areas for this technology are:
- high resolution miniature personal information displays such as virtual reality headsets
- projection engines for large area (e.g. 1 to 3 metre diagonal) high resolution information displays
The AFLC silicon backplane device with analogue greyscale has a number of potential advantages over alternative technologies:
- Significantly lower mass and volume than cathode ray tubes (CRTs)
- Brighter than monochrome electroluminescent displays, reflective so full colour can be obtained
- Potentially lower cost and more reliable than Texas Instrument's Digital Light Processing Device
- Estimated display addressing data rates 225 Mbits/s for analogue grey scale AFLC compared with 3.6 Gbits/s for an equivalent FLC device using temporal dither, under similar conditions
- Higher aperture ratio than conventional transmissive polysilicon displays because bus lines and thin film transistors (TFTs) are buried under the reflective electrode
- Higher resolution than conventional miniature LCDs using red, green and blue colour filters, because sequential colour provides multicolour single pixels
- The AC driving of AFLC displays removes the need for a DC compensating frame used with FLCs
Potential Areas of Innovation
The most innovative aspect of the project is in the use of AFLC materials to obtain analogue greyscale in a miniature silicon backplane device has not been reported by any group world-wide. Other areas of innovation include novel techniques to reduce the amount of light falling on to the CMOS circuitry, and reducing its sensitivity to light. Light blocking structures will be incorporated into the device as part of the post-processing procedures to planarise the wafer. In order to reduce the effects of charge leakage due to incident light, the use of guard rings to isolate each pixel, the fabrication of pixels in shallow wells, and the inclusion of slugging capacitors will be investigated.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
- engineering and technologymaterials engineeringcolors
- engineering and technologymaterials engineeringcoating and films
- natural sciencescomputer and information sciencessoftwaresoftware applicationsvirtual reality
- natural scienceschemical sciencesinorganic chemistrymetalloids
- engineering and technologymaterials engineeringliquid crystals
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Call for proposal
Data not availableFunding Scheme
CSC - Cost-sharing contractsCoordinator
UB3 1HH HAYES,MIDDLESEX
United Kingdom