发明名称 |
Reference signal generator and PWM control circuit for LCD backlight |
摘要 |
There are provided a reference signal generator and a PWM control circuit for LCD backlight. The reference signal generator and the PWM control circuit for LCD backlight may be configured to respectively include: a current control unit that controls generation of a variable current sequentially changing; a current generating unit that generates a variable current changing sequentially; and a reference signal generating unit that controls charging until a charged voltage charged by the variable current generated by the current generating unit reaches a first reference voltage level, starts discharging when the charged voltage reaches the first reference voltage level, controls discharging until the charged voltage reaches a second reference voltage level, and generates a triangular wave reference signal that has a frequency buffering interval in which a frequency sequentially changes when the initial driving completion signal or the protection signal is input. |
申请公布号 |
US8427068(B2) |
申请公布日期 |
2013.04.23 |
申请号 |
US20090646151 |
申请日期 |
2009.12.23 |
申请人 |
JANG YU JIN;CHEON JEONG IN;SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
JANG YU JIN;CHEON JEONG IN |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
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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