PATENT CLAIM ANALYSIS

Application Number: 15764610
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-02
Patent Classification: ["324", "414000"]

Abstract:
An LED backlight ( 15 ) having a plurality of LED groups ( 19 ) each including a plurality of LEDs ( 17 ) connected in series is tested. The LED groups (19 a  to 19 c ) are driven with a constant current respectively, and operating voltages (Vf 1  to Vf 3 ) of the LED groups (19 a  to 19 c ) are measured respectively. The LED backlight ( 15 ) is determined as normal when all of differences between the operating voltages (Vf 1  to Vf 3 ) are less than a reference value, and is determined as abnormal otherwise. With this, an open circuit failure and a short circuit failure of the LED ( 17 ) can be detected. A leakage failure of the LED ( 17 ) may be detected by switching an amount of a drive current used for driving with the constant current, to a minute current. Thus, the LED backlight is tested certainly and easily.

Claim (Index 2):
The method for testing according to  claim 1 , wherein the plurality of LEDs included in the LED group are connected in series so that a cathode terminal of the LED in a previous stage is connected to an anode terminal of the LED in a next stage.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 90.0
- Lexical Diversity: 2.31169
- Patent Class: 324.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16341203', '14000228', '12782653', '10571278', '12656268']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5485224621689285
- 35 USC 102 Novelty (BERT): 0.4791797136510898
- Combined Prediction Score: 0.5415881873171446
- Mean Citation Score: 183.268186
- Max Citation Score: 192.38226
- Similarity Product: 146.93427059473157

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

Dataset: test