发明名称 |
Apparatus, systems, and methods for dimming an active matrix light-emitting diode (LED) display |
摘要 |
Apparatus, systems, and methods are provided for dimming pixels on an active matrix light-emitting diode display. One apparatus includes an LED couplable between a voltage source and ground. First and second pulse-width modulation (PWM) drivers are also coupled to the LED. A system includes a plurality of LEDs forming a plurality of rows coupled between a voltage source and ground. A plurality of PWM drivers, each coupled to each of the LEDs in one of the plurality of rows, and a global PWM driver coupled to each of the plurality of LEDs in each of the plurality of rows are also included. One method includes providing current to each LED of a row of LEDs for a first portion of a cycle via a PWM driver, and providing current to each LED in the row for a second portion of the cycle via a different PWM driver. |
申请公布号 |
EP1998312(A2) |
申请公布日期 |
2008.12.03 |
申请号 |
EP20080156876 |
申请日期 |
2008.05.23 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
ROUSH, JERRY A.;SARMA, KALLURI R.;SCHMIDT, JOHN F. L. |
分类号 |
G09G3/32;G09G3/20;G09G3/3233 |
主分类号 |
G09G3/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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