LIGHT-EMITTING MODULE, CONTROL METHOD OF LIGHT-EMITTING DEVICE, LIGHT-EMITTING DEVICE AND CONTROL ARRANGEMENT
To reduce drive voltage of a light-emitting device, in dynamic driving.SOLUTION: Electrical resistance between a second light-emitting part 140b and a first second polarity terminal T2a is larger than electrical resistance between a first light-emitting part 140a and the first second polarity termin...
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Zusammenfassung: | To reduce drive voltage of a light-emitting device, in dynamic driving.SOLUTION: Electrical resistance between a second light-emitting part 140b and a first second polarity terminal T2a is larger than electrical resistance between a first light-emitting part 140a and the first second polarity terminal T2a. A control circuit 200 feeds a first pulse current to the first light-emitting part 140a, and feeds a second pulse current, having a pulse width wider than that of the first pulse current, to the second light-emitting part 140b. Electrical resistance between a fourth light-emitting part 140d and a second second polarity terminal T2b is larger than electrical resistance between a third light-emitting part 140c and the second second polarity terminal T2b. The control circuit 200 feeds a third pulse current to the third light-emitting part 140c, and feeds a fourth pulse current, having a pulse width wider than that of the third pulse current, to the fourth light-emitting part 140d.SELECTED DRAWING: Figure 1
【課題】ダイナミック駆動において、発光装置の駆動電圧を抑える。【解決手段】第2発光部140bと第1の第2極性端子T2aの間の電気抵抗は、第1発光部140aと第1の第2極性端子T2aの間の電気抵抗より大きくなっている。制御回路200は、第1パルス電流を第1発光部140aに流し、第1パルス電流のパルス幅より広いパルス幅を有する第2パルス電流を第2発光部140bに流す。第4発光部140dと第2の第2極性端子T2bの間の電気抵抗は、第3発光部140cと第2の第2極性端子T2bの間の電気抵抗より大きくなっている。制御回路200は、第3パルス電流を第3発光部140cに流し、第3パルス電流のパルス幅より広いパルス幅を有する第4パルス電流を第4発光部140dに流す。【選択図】図1 |
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