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    • 92. 发明申请
    • TEMPERATURE INDICATOR
    • 温度指示器
    • WO2006040711A1
    • 2006-04-20
    • PCT/IB2005/053282
    • 2005-10-06
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.MEIJER, Eduard, J.KURT, Ralph
    • MEIJER, Eduard, J.KURT, Ralph
    • G01K11/12
    • G01K11/12
    • A temperature indicator (1) for indicating a high temperature at a surface (13) comprises a light-emitting electrochemical cell (4) having a first electrode (8), a second electrode (9) and a light-emitting layer (10) being sandwiched between the two electrodes (8, 9). The light-emitting layer (10) comprises a matrix and ions being movable in the matrix, the mobility of said ions in said matrix being temperature dependent. A power source (5) is adapted for driving the light-emitting cell (4) with an AC voltage. The frequency of the AC voltage is tuned in such a way that, above a certain temperature level, the ions move fast enough in the matrix to provide a sufficient charge gradient in the light-emitting electrochemical cell (4) for the light-emitting electrochemical cell (4) to emit light before the AC power source (5) shifts the polarity of the voltage.
    • 用于表示表面(13)的高温的温度指示器(1)包括具有第一电极(8),第二电极(9)和发光层(10)的发光电化学电池(4) 夹在两个电极(8,9)之间。 发光层(10)包括基质,离子可以在基质中移动,所述基质中所述离子的迁移率是温度依赖性的。 电源(5)适于用AC电压驱动发光单元(4)。 调节交流电压的频率使得在高于某一温度水平的情况下,离子在矩阵中移动得足够快以在发光电化学电池(4)中提供足够的电荷梯度,用于发光电化学 电池(4)在AC电源(5)之前发光,从而使电压的极性偏移。