Liquid crystal driving circuit and liquid crystal display device including multiple shift registers and an enable switch to allow partial driving
View Patent ↗A liquid crystal drive circuit in which the degradation of the element is minimized in partial drive even for the GOG circuit configured by amorphous silicon, and a liquid crystal display device including the same are provided. The liquid crystal driving circuit includes a first shift register and a driving means. The first shift register advances through the line address of a pixel array to display an image, and outputs an enable signal only to drive the display target line. The driving means outputs a line drive signal corresponding to the enable signal to drive the line enabled by the first shift register.
1. A liquid crystal driving circuit comprising:
a first shift register for advancing through the line address of a pixel array to display an image, and outputting an enable signal only to drive the display target line; and
a driving means electrically connected to the first shift register and the line for outputting a line drive signal corresponding to the enable signal to drive the line enabled by the first shift register,
wherein the driving means includes a second shift register and an enable switch, the second shift register receives a signal outputted from a shift register of the previous line and a signal outputted from a shift register of the next line, and outputs the line drive signal for the pixel array, and the enable switch is connected to the first shift register and the second shift register.
2. The liquid crystal driving circuit according to claim 1 , wherein the driving means is arranged on one side of the pixel array.
3. The liquid crystal driving circuit according to claim 1 , wherein
the second shift register arranged on the opposite side of the pixel array with respect to the first shift register, and
the enable switch arranged on the same side as the first shift register.
4. The liquid crystal driving circuit according to claim 1 , wherein the first shift register has an auxiliary capacitor connected to the enable output line.
5. The liquid crystal driving circuit according to claim 1 , wherein the first shift register includes a bootstrap circuit configured by a transistor and a capacitor connected between the gate and the drain of the transistor for obtaining the enable output of the line that changes in steps based on the enable output of a previous line.
6. The liquid crystal driving circuit according to claim 1 , wherein the liquid crystal driving circuit is formed on a glass substrate.
7. The liquid crystal driving circuit according to claim 1 , wherein a transistor configuring the liquid crystal driving circuit is formed by amorphous silicon.
8. A liquid crystal display device comprising a liquid crystal driving circuit according to claim 1 , and a pixel array driven by the liquid crystal driving circuit.