Method for driving liquid crystal display device
A low-resolution image is displayed at high resolution and power consumption is reduced. Resolution is made higher by super-resolution processing. Then, display is performed with the luminance of a backlight controlled by local dimming after the super-resolution processing. By controlling the luminance of the backlight, power consumption can be reduced. Further, by performing the local dimming after the super-resolution processing, accurate display can be performed.
1. An electronic device, comprising:
a display device comprising a transistor, a channel portion of the transistor comprising an oxide semiconductor; and
a circuit,
wherein the circuit is configured to perform a super-resolution processing and an edge enhancement processing, and
wherein the electronic device is configured that an image signal is processed with the edge enhancement processing after the super-resolution processing at the circuit, to be input to the display device.
2. The electronic device according to claim 1 , wherein the circuit is configured to perform converting interlace images into progressive images before the super-resolution processing.
3. The electronic device according to claim 1 , wherein the circuit is configured to perform the super-resolution processing in parts of regions in a screen.
4. The electronic device according to claim 1 , wherein the circuit is configured to perform the edge enhancement processing in parts of regions in a screen.
5. The electronic device according to claim 1 , wherein the circuit is configured to perform a local dimming processing to the image signal after the super-resolution processing.
6. An electronic device, comprising:
a display device comprising a transistor, a channel portion of the transistor comprising an oxide semiconductor; and
a circuit,
wherein the circuit is configured to perform a super-resolution processing, an edge enhancement processing and a frame interpolation processing, and
wherein the electronic device is configured that an image signal is processed with the edge enhancement processing and the frame interpolation processing after the super-resolution processing at the circuit, to be input to the display device.
7. The electronic device according to claim 6 , wherein the circuit is configured to perform converting interlace images into progressive images before the super-resolution processing.
8. The electronic device according to claim 6 , wherein the circuit is configured to perform the super-resolution processing in parts of regions in a screen.
9. The electronic device according to claim 6 , wherein the circuit is configured to perform the frame interpolation processing in parts of regions in a screen.
10. The electronic device according to claim 6 , wherein the circuit is configured to perform a local dimming processing to the image signal after the super-resolution processing.
11. The electronic device according to claim 10 , wherein the circuit is configured to perform the local dimming processing in parts of regions in a screen.
12. The electronic device according to claim 6 , wherein the circuit is configured to perform the edge enhancement processing in parts of regions in a screen.