PATENT CLAIM ANALYSIS

Application Number: 16125793
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2018-12
Patent Classification: ["349", "106000"]

Abstract:
The present invention provides a manufacturing method of a color filter substrate, in which a layer of photoresist layer of a negative photoresist resin material is first formed on the color filter film layer; then, back side exposure is conducted on the photoresist layer from the underside of the backing plate so that a part of the photoresist layer that is adjacent to the backing plate gets cured for subsequently forming a planarization layer; afterwards, a mask is used to conduct front side exposure on the photoresist layer from the backing plate to form post spacers; and finally, the photoresist layer that has been subjected to exposure twice is subjected to development to remove a portion of the photoresist layer that has not been cured so as to form, simultaneously, a planarization layer and post spacers located on the planarization layer. This, when compared to an existing manufacturing method of a color filter substrate, can greatly simplify operation flow and thus greatly reduce investment on manufacturing line facility and lower down manufacturing costs of products and potential risks of unexpected problems occurring in the manufacturing process and shortening product manufacturing cycle.

Claim (Index 11):
A manufacturing method of a color filter substrate, comprising the following steps:\n (1) providing a backing plate and forming a black matrix on the backing plate; (2) forming a color filter layer on the backing plate and the black matrix; (3) coating a layer of negative photoresist resin on the color filter layer and the black matrix to form a photoresist layer; (4) conducting back side exposure on the photoresist layer from an underside of the backing plate such that exposure light transmits through the backing plate and the color filter layer to irradiate on the photoresist layer to cure a portion of the photoresist layer that is adjacent to the backing plate; (5) providing a mask and using the mask to conduct front side exposure on the photoresist layer from top of the backing plate so as to have a portion of the photoresist layer that corresponds to a pattern of the mask cured; and (6) subjecting the photoresist layer to a development operation in order to remove an uncured part of the photoresist layer to form a planarization layer and post spacers located on the planarization layer; wherein the development operation is conducted after both the back side exposure and the front side exposure such that the planarization layer comprises the portion of the photoresist layer that is cured in step (4); and the post spacers comprise the portion of the photoresist layer that corresponds to the pattern of the mask and is cured in step (5) and are located on the planarization layer; wherein the mask provided in step (5) comprises a halftone mask and the mask comprises a first, light-transmitting pattern and a second, partially-light-transmitting pattern; and the post spacers formed in step (6) comprise a main post spacer and a sub post spacer, the main post spacer and the sub post spacer being respectively formed with and corresponding to the first pattern and the second pattern of the mask; and wherein the black matrix formed in step (1) surrounds and defines a plurality of sub-pixel areas on the backing plate; and the color filter layer formed in step (2) has thicknesses that are not consistent in the plurality of sub-pixel areas.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 97.0
- Lexical Diversity: 2.125
- Patent Class: 349.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15114844', '14914638', '14315862', '15147448', '14742608']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8250537755641171
- 35 USC 102 Novelty (BERT): 0.5824305405445488
- Combined Prediction Score: 0.8007914520621602
- Mean Citation Score: 330.711046
- Max Citation Score: 468.314
- Similarity Product: 449.7240689049959

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