Patent ID: 8823753

Claim:
A display driver circuit, comprising: a grey-scale voltage generation unit having first to third grey-scale voltage generators, each of the first to third grey-scale voltage generators generating n (wherein n is a natural number larger than 2) grey-scale voltages by selecting a maximum reference voltage and a minimum reference voltage among first distribution voltages, selecting a predetermined number of voltages among second distribution voltages, and distributing selected voltages, wherein the first grey-scale voltage generator includes: a first resistor string configured to generate the first distribution voltages by receiving first and second power supply voltages, and a second resistor string configured to generate the second distribution voltages by receiving a first maximum reference voltage and a first minimum reference voltage selected among the first distribution voltages, wherein the second grey-scale voltage generator selects a second maximum reference voltage and a second minimum reference voltage among the first distribution voltages from the first resistor string and selects a predetermined number of voltages among the second distribution voltages from the second resistor string receiving the second maximum reference voltage and the second minimum reference voltage, and wherein the third grey-scale voltage generator selects a third maximum reference voltage and a third minimum reference voltage among the first distribution voltages from the first resistor string and selects a predetermined number of voltages among the second distribution voltages from the second resistor string receiving the third maximum reference voltage and the third minimum reference voltage.