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US 8,542,183 B2Granted
Display device, signal line driver, and data transfer method
AssigneeRenesas Electronics Corporation
InventorsTakashi Nose, Yoshihiko Hori
Life of this patent
Estimating the term…
Abstract
A liquid crystal display device includes a timing controller, a liquid crystal display panel, multiple data drivers, and gate drivers. The timing controller supplies control data to specified drivers among the data drivers. The specified drivers generate gate driver control signals to control gate drivers in response to the control data, and supply gate driver control signals to the gate drivers.
Claims12
A display device, comprising:
- a display panel;
- a timing controller;
- a plurality of signal line drivers to drive display panel signal lines;
- and
- a seaming line driver to drive scanning lines on the display panel,
- wherein the timing controller supplies control data to a specified driver among the signal line drivers, and
- wherein the specified driver generates scanning line driver control signals to control the scanning line drivers in a response to the control data, and supplies scanning line driver control signals to the scanning line driver,
- wherein the specified driver includes:
- a drive circuit to drive the signal lines of the display panel;
- a control signal generator circuit to generate signal line driver control signals to control the drive circuit from the control data, and to generate the scanning line driver control signals;
- output pins coupled to the scanning line driver;
- and
- a selector to select either the signal line driver control signal or the scanning line driver control signals,
- wherein the selector is configured to output a selected one of the signal line driver control signal and the scanning line driver control signals from the output pin, and
- wherein, during a test operation, the selector selects the signal line driver control signal, from the signal line driver control signal and the scanning line driver control signals, and outputs the signal line driver control signal from the output pins.
12 more elements
A signal line driver, comprising:
- a receiver to receive transfer data including video data and control data from a timing controller;
- a drive circuit to drive display panel signal lines in a response to the video data;
- and
- a control signal generator circuit to generate control signals to control the scanning line driver that drives the scanning lines in the display panel in a response to the control data;
- an output pin connected to the scanning line driver;
- and
- a selector,
- wherein the control signal generator circuit generates signal line driver control signals to control the drive circuit from the control data,
- wherein the selector selects control signals from either the signal line driver control signals or the scanning line driver control signals, and outputs a selected one of the signal line driver control signal and the scanning line driver control signals from the output pin, and
- wherein, during a test operation, the selector selects the signal line driver control signal, from the signal line driver control signal and the scanning line driver control signals, and outputs the signal line driver control signal from the output pins.
7 more elements
Dependencies are inferred from the claim text.