PATENT CLAIM ANALYSIS

Application Number: 16226039
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["349", "117000"]

Abstract:
A privacy display comprises a spatial light modulator and a compensated switchable liquid crystal retarder arranged between first and second polarisers arranged in series with the spatial light modulator. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction over a wide polar field. In a wide angle mode of operation, the switchable liquid crystal retardance is adjusted so that off-axis luminance is substantially unmodified.

Claim (Index 1):
A switchable display device comprising:\n a backlight arranged to output light; a transmissive spatial light modulator arranged to receive the light output from the backlight, wherein the backlight provides a luminance at polar angles to the normal to the spatial light modulator greater than 45 degrees that is at most 20% of the luminance along the normal to the spatial light modulator; a display polariser arranged on a side of the spatial light modulator; an additional polariser arranged on the same side of the spatial light modulator as the display polariser; and plural retarders arranged between the additional polariser and the display polariser, wherein the plural retarders comprise: a switchable liquid crystal retarder comprising: a layer of liquid crystal material and two surface alignment layers disposed adjacent to the layer of liquid crystal material and on opposite sides thereof, and at least one passive compensation retarder that comprises either: at least one passive uniaxial retarder having its optical axis perpendicular to the plane of the retarder; or at least one pair of passive uniaxial retarders having optical axes in the plane of the retarders that are crossed.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 98.0
- Lexical Diversity: 1.72414
- Patent Class: 349.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16038638', '16038698', '12128873', '15860853', '10485357']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8722457468472793
- 35 USC 102 Novelty (BERT): 0.614852731603634
- Combined Prediction Score: 0.8465064453229147
- Mean Citation Score: 405.597916
- Max Citation Score: 582.35693
- Similarity Product: 519.2667954575455

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test