Reference voltage generation circuit and its generation method, display device
AssigneeTcl China Star Optoelectronics Technology Co., Ltd.
InventorsHaoran Li, Jianfeng Xiao
Life of this patent
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Abstract
A reference voltage generation circuit is provided. The reference voltage generation circuit reduces a potential difference between a reference voltage less than a first data driving voltage and a data driving voltage, namely, the potential difference between a lower reference voltage and the data driving voltage is reduced. Therefore, the power loss of a voltage dividing module is reduced to prevent the problems of reduced reliability and reduced service life of a drive circuit board due to excessive internal temperature.
Claims14
A reference voltage generation circuit, comprising a power supply module, a transformer module and a voltage dividing module connected in sequence;
- wherein the power supply module is configured to provide a benchmark voltage;
- the transformer module is configured to provide a first data driving voltage according to the benchmark voltage, and the first data driving voltage is less than the benchmark voltage;
- and
- the voltage dividing module is configured to generate a reference voltage less than the first data driving voltage according to the first data driving voltage, and
- wherein the transformer module is further configured to provide a second data driving voltage according to the benchmark voltage, and the second data driving voltage is greater than the benchmark voltage;
- and the voltage dividing module is further configured to generate the reference voltage not less than the first data driving voltage according to the second data driving voltage.
A reference voltage generation method, comprising:
- providing a benchmark voltage through a power supply module;
- converting the benchmark voltage into a first data driving voltage through a transformer module, and the first data driving voltage is less than the benchmark voltage;
- and
- generating a reference voltage less than the first data driving voltage according the first data driving voltage through a voltage dividing module, and
- wherein the reference voltage generation method further comprises:
- converting the benchmark voltage into a second data driving voltage through the transformer module, and the second data driving voltage greater than the benchmark voltage;
- and
- generating the reference voltage not less than the first data driving voltage according to the second data driving voltage through the voltage dividing module.
A display device, comprising a reference voltage generation circuit, wherein the reference voltage generation circuit comprises a power supply module, a transformer module and a voltage dividing module connected in sequence;
- wherein the power supply module is configured to provide a benchmark voltage;
- the transformer module is configured to provide a first data driving voltage according to the benchmark voltage, and the first data driving voltage is less than the benchmark voltage;
- and
- the voltage dividing module is configured to generate a reference voltage less than the first data driving voltage according to the first data driving voltage, and
- wherein the transformer module is further configured to provide a second data driving voltage according to the benchmark voltage, and the second data driving voltage is greater than the benchmark voltage;
- and the voltage dividing module is further configured to generate the reference voltage not less than the first data driving voltage according to the second data driving voltage.
Dependencies are inferred from the claim text.