LCD Panel Startup Gating via TCON Output Enable Control
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Solution Overview
Problem
Liquid Crystal Display (LCD) panels often experience an abnormal startup screen due to the instability of the Timing Controller Integrated Circuit (TCON IC) during initial configuration, leading to prolonged startup times as a workaround involves delaying the backlight turn-on, which is not optimal for user experience.
Innovation Solution
A display panel driving method that uses a timing control chip to read and configure an initial code, generating control signals to manage the output enable circuit, which controls the data drive chip, ensuring the display panel remains in a black state until stable, thereby preventing abnormal startup screens even when the backlight is turned on early.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the backlight module is turned on early during startup, then the startup time is reduced, but the timing control chip output is unstable causing abnormal startup screens
Solution Approach 1:
The backlight module is turned on in advance during the initialization process, before the timing control chip completes its configuration. This preliminary action allows the backlight to be ready when the chip becomes stable, eliminating startup time loss while preventing abnormal screens through the enable signal control.
Solution Approach 2:
An enable signal is introduced as an intermediary between the timing control chip and the data drive chip. This enable signal acts as a mediator that controls when data transmission occurs, allowing the system to benefit from early backlight activation while preventing unstable chip output from causing abnormal startup screens.
2Reliability
If the timing control chip completes initialization before backlight turn-on, then stable output is achieved, but the startup time is prolonged
Solution Approach 1:
The backlight module is activated in advance during initialization rather than waiting for the timing control chip to complete its configuration. This preliminary action reduces startup time by eliminating the waiting period, while the enable signal mechanism ensures stability by controlling data transmission only when the chip is ready.
Solution Approach 2:
The system dynamically adjusts the timing of different components: the backlight is turned on early while the timing control chip continues its initialization, and the enable signal dynamically controls when data transmission begins. This dynamic coordination allows both early backlight activation and stable chip output to coexist, reducing overall startup time.
3Productivity
If the data drive chip continuously outputs data during initialization, then no black screen is needed, but unstable timing control chip causes abnormal startup screens
Solution Approach 1:
The enable signal is set to a first state (disabled) during initialization to prevent abnormal startup screens caused by unstable timing control chip output. This preliminary protective action blocks data transmission when the chip is unstable, and then transitions to a second state (enabled) when the chip becomes stable, allowing normal display operation to begin.
Data Source
AI summary
The present application discloses a display panel driving method and a display panel thereof. The display panel driving method includes: a timing control chip performs initial configurations; the timing control chip generates a control signal; and an output enable circuit receives the control signal to control picture display of a display panel.