PATENT CLAIM ANALYSIS

Application Number: 16038698
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["349", "074000"]

Abstract:
A privacy display comprises a polarised output spatial light modulator, reflective polariser, switchable liquid crystal retarder and polariser. 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. Further, display reflectivity is reduced for on-axis reflections of ambient light, while reflectivity is increased for off-axis light. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction and increased frontal reflectivity to ambient light. In a wide angle mode of operation, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified.

Claim (Index 1):
A switchable display device for use in ambient illumination comprising:\n a spatial light modulator arranged to output light; wherein the spatial light modulator comprises a display polariser arranged on the output side of the spatial light modulator; an additional polariser arranged on the output side of the display polariser; a reflective polariser arranged between the display polariser and the additional polariser; and at least one retarder arranged between the additional polariser and the reflective polariser, wherein the at least one retarder comprises: a switchable liquid crystal retarder comprising: a layer of liquid crystal material having a positive dielectric anisotropy and having a retardance for light of a wavelength of 550 nm in a range from 500 nm to 1000 nm; and two surface alignment layers disposed adjacent to the layer of liquid crystal material and on opposite sides thereof, each of the surface alignment layers being arranged to provide homogeneous alignment in the adjacent liquid crystal material and each of the surface alignment layers having a pretilt having a pretilt direction with a component in the plane of the layer of liquid crystal material that is parallel or anti-parallel or orthogonal to an electric vector transmission direction of the reflective polariser.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 95.0
- Lexical Diversity: 1.96552
- Patent Class: 349.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16038638', '12128873', '15860853', '10485357', '11299068']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8650733033073958
- 35 USC 102 Novelty (BERT): 0.6736488327288903
- Combined Prediction Score: 0.8459308562495453
- Mean Citation Score: 330.9262700000001
- Max Citation Score: 594.58453
- Similarity Product: 559.5504600569666

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