Software solution to LCD (liquid crystal display) display problem caused by ESD (electro-static discharge)
A solution and software technology, applied in static indicators, instruments, etc., can solve the problems of lack of judgment and processing mechanism of LCD white screen, and achieve the effect of real-time judgment and real-time processing, and real-time judgment and detection.
Inactive Publication Date: 2010-06-23
KONKA GROUP
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a software solution to the LCD display problem caused by ESD for the above-mentioned defects in the prior art that lack effective judgment and processing mechanism for the LCD white screen caused by ESD
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Embodiment Construction
[0022] Embodiments of the present invention relate to software solutions to LCD display problems caused by ESD. The present invention adopts the method of software, reads the value of the register in the LCD driving circuit in the timer or under special circumstances, judges whether the register value is valid value, if it is an illegal value, then it is considered that the LCD has a white screen problem, and then restart Initialize the LCD drive circuit to restore the drive circuit to the normal working state. When the main chip refreshes the display data to the LCD, the LCD can display normally.
[0023] figure 1 It is a flow chart of the steps of the first embodiment of the software solution method for LCD display problems caused by ESD of the present invention. Such as figure 1 As shown, the process starts at step 101, and the process starts when the main chip writes refresh display data to the LCD and / or when the LCD exits the sleep mode. In step 102, read the correspo...
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The invention relates to a software solution to an LCD (liquid crystal display) display problem caused by ESD (electro-static discharge). By adopting a software method, the method comprises the following steps of: reading the value of a register in an LCD drive circuit in a timer or under a specific condition; judging whether the register value is an effective value or not, and if the register value is an illegal value, then judging that the LCD is subject to a white screen problem, and reinitiating the LCD drive circuit at the moment so as to enable the drive circuit to revert to a normal working state, wherein when a main chip refreshing display data to the LCD, the LCD can display normally. Through reading and effectively judging the main register value in the LCD drive circuit under the specific condition or in a fixed time, the invention realizes real-time judgment and detection on the LCD white screen; in addition, the emerged LCD white screen is processed by adopting a real-time processing mechanism to enable the LCD to revert to a normal state automatically, thereby realizing the real-time judgment and the real-time processing on the LCD white screen fundamentally.
Description
technical field [0001] The present invention relates to an LCD display device, and more specifically relates to a software solution to LCD display problems caused by ESD. Background technique [0002] Handheld devices such as mobile phones, GPS, and electronic dictionaries sometimes cause LCD white screen problems due to ESD problems. The essence of this problem is that the driving circuit in the LCD is in an abnormal working state due to the instantaneous high voltage of ESD, and the information cannot be displayed. When this happens, generally speaking, the internal circuit of the LCD is not damaged, but the working state is abnormal. So just re-initialize the LCD and this problem can be solved. [0003] When a white screen occurs on the LCD display in the prior art, due to the lack of a corresponding white screen judgment and processing mechanism, usually the user can only manually restart the device to restore the normal display of the LCD. Contents of the invention ...
Claims
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IPC IPC(8): G09G3/36
Inventor 张学平
Owner KONKA GROUP