PATENT CLAIM ANALYSIS

Application Number: 15997374
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-10
Patent Classification: ["349", "012000"]

Abstract:
A cholesteric liquid crystal writing board, which can display a writing track, includes a cholesteric liquid crystal device, an optical layer, a photo-sensing array and a voltage control circuit. The cholesteric liquid crystal device includes plural liquid crystal control areas. The optical layer has plural optical openings. The photo-sensing array includes plural photo sensors arranged in an array. The photo sensors are disposed corresponding to the optical openings. One of the photo sensors senses a luminous flux change and generates an erasing signal accordingly. The voltage control circuit receives the erasing signal and outputs a voltage signal accordingly to the liquid crystal control areas corresponding to the photo sensors having the luminous flux change, such that a part or all of cholesteric liquid crystals corresponding to the liquid crystal control areas are morphologically changed so as to clear a part or all of the writing trace.

Claim (Index 1):
A cholesteric liquid crystal writing board, which is capable of displaying a writing track, comprising:\n a cholesteric liquid crystal device comprising a cholesteric liquid crystal layer, wherein the cholesteric liquid crystal device has a light-entering surface and a plurality of liquid crystal control areas; an optical layer disposed at a side of the cholesteric liquid crystal device opposite to the light-entering surface, wherein the optical layer has a plurality of optical openings disposed corresponding to the liquid crystal control areas; a photo-sensing array disposed at a side of the optical layer away from the cholesteric liquid crystal device, wherein the photo-sensing array comprises a plurality of photo sensors arranged in an array, the photo sensors are disposed corresponding to the optical openings, one of the photo sensors senses a luminous flux change and generates an erasing signal accordingly, and the photo sensor corresponds to at least one of the liquid crystal control areas; and a voltage control circuit coupled to the photo-sensing array and the cholesteric liquid crystal device, wherein the voltage control circuit receives the erasing signal and outputs a voltage signal accordingly to the liquid crystal control areas corresponding to the photo sensors having the luminous flux change, such that a part or all of cholesteric liquid crystals corresponding to the liquid crystal control areas are morphologically changed so as to clear a part or all of the writing trace.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 94.0
- Lexical Diversity: 2.50794
- Patent Class: 349.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14971094', '14678482', '13477638', '13897004', '13477602']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.843292300704409
- 35 USC 102 Novelty (BERT): 0.4932022893003948
- Combined Prediction Score: 0.8082832995640076
- Mean Citation Score: 241.888758
- Max Citation Score: 248.68721
- Similarity Product: 185.6702494801849

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