void OLED_ClearVerLine(uint8_t chId, uint8_t chWdth) {

	for (uint8_t i = 0; i < 8; i++) {
		for (uint8_t j = 0; (j + chId) < OLED_WIDTH && j < chWdth; j++) {
			s_chDispalyBuffer[chId + j][i] = 0;
		}
	}
}