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发明授权
US07916107B2 Gamma voltage output circuit and liquid crystal display having same 有权
γ电压输出电路和具有相同的液晶显示器

Gamma voltage output circuit and liquid crystal display having same
摘要：
An exemplary gamma voltage output circuit (3) has an internal resistor string (31), which has a plurality of resistors and a plurality of nodes; at least one external resistor string (32, 33, 34), which has a plurality of resistors and a plurality of nodes; a plurality of switching circuit (35), each switching circuit having at least one input end (353, 354, 355) and at least one output end (356). The internal and the at least one external resistor strings connect in series between the power source AVDD and ground, respectively. Each node outputs a gamma voltage. The nodes of internal and the at least one external resistor strings respectively are connected to the output end and the input end, the resistors of the internal resistor string parallel connecting to corresponding resistors of the at least one external resistor string through the corresponding switching circuit.
摘要（中）：

示例性伽马电压输出电路（3）具有内部电阻串（31），其具有多个电阻器和多个节点; 至少一个外部电阻器串（32,33,34），其具有多个电阻器和多个节点; 多个开关电路（35），每个开关电路具有至少一个输入端（353,354,355）和至少一个输出端（356）。 内部和至少一个外部电阻串分别串联在电源AVDD和地之间。 每个节点输出伽马电压。 内部和至少一个外部电阻串的节点分别连接到输出端和输入端，内部电阻器串的电阻通过相应的开关电路并联连接到至少一个外部电阻串的相应电阻。

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