Identifier of source driver of chip-on-glass liquid crystal display and identifying method thereof
An identifier for identifying a source driver of a chip-on-glass liquid crystal display and an identifying method thereof are provided. The identifier includes a comparator for receiving a chip identity and a target identity, and generates a triggering signal to activate the source driver if the chip identity coincides with the target identity.
1. A source driver applied in a chip-on-glass liquid crystal display, the chip-on-glass liquid crystal display comprising a gate driver, the source driver comprising:
a receiver, for receiving a control bitstream and image data, the control bitstream having a target identity;
a wave generator, for comparing the target identity with a chip identity of the source driver, wherein the wave generator outputs a source control signal to activate the source driver to convert the image data into driving voltages and transmit the driving signals to a panel of the liquid crystal display if the chip identity coincides with the target identity, and the wave generator generates a gate control signal for controlling the gate driver according to the source control signal; and
a bus switch, for switching a transmission mode of the source driver between a dual-way transmission mode and a single-way transmission mode, wherein in the dual-way transmission mode, the source driver simultaneously transmits the received image data and the control bitstream to two or more neighboring source drivers, and in the single-way transmission mode, the source driver transmits the received image data and the control bitstream to a neighboring source driver.
2. The identifier according to claim 1 , wherein the chip identity is pre-determined by respectively pulling high or low pins of the source driver on a glass substrate.
3. The identifier according to claim 1 , wherein the source control signal is a source driver start signal (STH signal).
4. The identifier according to claim 1 , wherein an assertion time of the source control signal is predetermined.
5. A driving method applied in a source driver of a chip-on-glass liquid crystal display, the source driver having a chip identity, the driving method comprising:
receiving a control bitstream and image data via the source driver wherein the control bitstream comprises a target identity;
comparing the chip identity of the source driver and the target identity;
generating a source control signal to activate the source driver to covert the image data into driving voltages and transmit the driving voltages to a panel of the liquid crystal display if the chip identity coincides with the target identity;
generating a gate control signal for controlling a gate driver of the chip-on-glass liquid crystal display by the source driver according to the source control signal; and
switching a transmission mode of the source driver between a dual-way transmission mode and a single-way transmission mode, wherein in the dual-way transmission mode, the source driver simultaneously transmits the received image data and the control bitstream to two or more neighboring source drivers, and in the single-way transmission mode, the source driver transmits the received image data and the control bitstream to a neighboring source driver.
6. The method according to claim 5 , wherein the chip identity is pre-determined by respectively pulling high or low pins of the source driver on a glass substrate.
7. The method according to claim 5 , wherein the source control signal is a source driver start signal (STH signal).
8. The method according to claim 5 , wherein the assertion time of the source control signal is predetermined.