Power generator circuit, generating method thereof, and liquid crystal display device
OwnerToshikazu Maekawa, Yoshiharu Nakajima +1inventors
InventorsToshikazu Maekawa, Yoshiharu Nakajima, Shintarou Morita
Life of this patent
Estimating the term…
Abstract
A power generator circuit, generation method, and liquid crystal display (LCD) wherein the power generator circuit does not require the design of a set when a negative or positive power generator circuit is installed outside the LCD panel. In a liquid crystal display integrated-with-drive circuit, a positive or negative power generator circuit is incorporated into the LCD panel and supplies a positive or negative voltage to a vertical driver circuit.
Claims18
A power generator circuit comprising:
- first clamping means to clamp the high level or low level of a clock pulse having a phase opposite the phase of the input clock to a reference voltage within ground level or to a positive reference voltage;
- second clamping means to clamp the high level or low level of a clock pulse having a positive phase versus the input clock phase to a reference voltage within ground level or to a positive reference voltage level;
- and
- sampling means to sample the high level or low level of the clamped output of the first clamping means, and the high level or low level of the clamped output of the second clamping means.
A power generation method wherein the high level or the low level of the positive phase or reverse phase of each clock with respect to the input clock is clamped at a reference voltage level within ground level or a positive reference voltage level and, the low level or the high level of the clamped positive phase clock is sampled at the high level or the low level of the clamped reverse phase clock.
A liquid crystal display device having a pixel area and at least a drive circuit containing a vertical driver integrated onto the same board of polysilicon wherein, the power generator circuit for generating the power supply voltage is incorporated onto said board.
Dependencies are inferred from the claim text.