LED DISPLAY DEVICE AND DRIVE UNIT

• Main Authors: YONEOKA ISAO, SHIBUE SHIGENORI, ASAMURA YOSHINORI
• Format: Patent
• Language: English; Japanese
• Published: 04.10.2018
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; DISPLAY; EDUCATION; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; PHYSICS; SEALS; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide a technology that can suppress power consumption of LED.SOLUTION: The LED display device includes voltage supplying units 40, 50 that can supply multiple kinds of voltages different from each other and a drive unit 5 that drives an LED display unit 1 by using these multiple kinds of voltages. The drive unit 5 switches the voltages that should be supplied to the LED array to be lit from the multiple kinds of voltages by time sharing control, and among the multiple LEDs included in the LED array to be lit, lights up part of the LEDs that should be lit by supplying the LED array the voltage that should be supplied.SELECTED DRAWING: Figure 3 【課題】ＬＥＤの消費電力を抑制可能な技術を提供することを目的とする。【解決手段】ＬＥＤ表示装置は、互いに異なる複数種類の電圧を供給可能な電圧供給部４０，５０と、当該複数種類の電圧を用いて、ＬＥＤ表示部１を駆動する駆動部５とを備える。駆動部５は、複数種類の電圧の中から、点灯対象のＬＥＤアレイに供給すべき電圧を時分割制御により切り替え、かつ、点灯対象のＬＥＤアレイに含まれる複数のＬＥＤのうち、当該ＬＥＤアレイに供給すべき電圧によって点灯すべき一部のＬＥＤを点灯させる。【選択図】図３