PATENT CLAIM ANALYSIS

Application Number: 16042345
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-12
Patent Classification: ["345", "691000"]

Abstract:
An object of the present invention is to implement a display device capable of compensating for degradation of circuit elements without causing a grayscale failure. Based on the results of detection of characteristics of drive transistors and organic EL elements, a control circuit ( 20 ) finds magnitudes of threshold shifts of the drive transistors and the organic EL elements. A power supply voltage control unit ( 201 ) sets a value of a low-level power supply voltage (ELVSS) to a value lower, by a voltage value corresponding to an average value of the magnitudes of the threshold shifts for all pixels, than a value at an initial point in time. Furthermore, the power supply voltage control unit ( 201 ) adjusts a value of a high-level power supply voltage (ELVDD), depending on magnitudes of mobilities obtained by detection of characteristics of the drive transistors.

Claim (Index 12):
A display device including a plurality of pixel circuits, each including an electrooptical element whose luminance is controlled by a current, and a drive transistor configured to control a current to be supplied to the electrooptical element, the display device comprising:\n a plurality of data lines configured to supply data voltages for grayscale display to the plurality of pixel circuits; a data line drive circuit configured to apply the data voltages to the plurality of data lines; an amount-of-characteristic-change obtaining unit configured to find an amount of change in characteristic of a target circuit element, at least either one of the drive transistor and the electrooptical element serving as the target circuit element; a power supply voltage control unit configured to control at least a value of a first power supply voltage, the first power supply voltage being one of a first-level voltage and a second-level voltage, and the first-level voltage and the second-level voltage being supplied to the plurality of pixel circuits; and a temperature detecting unit configured to detect a temperature, wherein in each of the plurality of pixel, circuits,\n a data voltage supplied by a corresponding data line is provided to a control terminal of the drive transistor, \n the second-level voltage is provided to a first conduction terminal of the drive transistor, \n a second conduction terminal of the drive transistor is connected to one electrode of the electrooptical element, and \n the first-level voltage is provided to an other electrode of the electrooptical element, \n the amount-of-characteristic-change obtaining unit finds the amount of change in characteristic of the target circuit element, based on a temperature detected by the temperature detecting unit, and the power supply voltage control unit controls the value of the first power supply voltage, depending on the amount of change found by the amount-of-characteristic-change obtaining unit.

Metadata:
- Claim Count in Document: 34.0
- Percentile: 95.0
- Lexical Diversity: 2.19444
- Patent Class: 345.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15124202', '15037712', '15039098', '14787793', '14654114']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6810039572413232
- 35 USC 102 Novelty (BERT): 0.5816474676903145
- Combined Prediction Score: 0.6710683082862224
- Mean Citation Score: 310.749814
- Max Citation Score: 472.48764000000006
- Similarity Product: 460.5327892530442

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

Dataset: test