A liquid crystal color display control circuit and an air conditioner
A color display and control circuit technology, applied to static indicators, instruments, etc., can solve the problems of high cost and increased production cost, and achieve the effect of low price
Active Publication Date: 2017-05-10
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Problems solved by technology
[0003] In view of the above problems, the object of the present invention is to provide a liquid crystal color display control circuit, aiming to solve the technical problems of requiring a high-cost dedicated color liquid crystal management chip and increasing production costs in the existing liquid crystal color display scheme
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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0020] figure 2 The circuit structure of the liquid crystal color display control circuit provided by the embodiment of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown. see figure 2 :
[0021] The liquid crystal color display control circuit provided in this embodiment includes a black and white liquid crystal panel 1, a color backlight 2 arranged at the bottom of the black and white liquid crystal panel 1, and an MCU control unit 3 for driving the black and white liquid crystal panel 1 and the c...
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The invention is applicable to the display control field, and provides a liquid crystal color display control circuit and an air conditioner. In the invention, a special color liquid crystal management chip of high cost is saved; a cheap MCU is used to drive a liquid crystal color display; and through a synchronous conversion circuit, a public output end, segment code control output end and a color control output end of the MCU realize synchronous output, and each segment code polling carried out a color display. Because the segment code polling switches quickly, in the eyes of the user, each segment code is displayed continuously; when the invention is realized, the synchronous conversion circuit can be an operational amplifier or an analog to digital converter built in a general MCU, and a synchronous clock signal is obtained by software; and the synchronous conversion circuit can also be a physical circuit arranged outside the MCU. Whatever the synchronous conversion circuit is built in the MCU or arranged outside the MCU, the MCU is a mature product and low in price.
Description
technical field [0001] The invention belongs to the field of display control, in particular to a liquid crystal color display control circuit and an air conditioner. Background technique [0002] In the display screen solutions of various home appliances, the liquid crystal displays currently used are usually black and white liquid crystal display methods. Low-cost non-dot-matrix color LCDs are the development trend in this field, but now non-dot-matrix color LCDs generally use modules way, using a dedicated color display management chip, the connection method is as follows figure 1 As shown: the MCU communicates with the dedicated color liquid crystal management chip through SPI and other communication interfaces. The color liquid crystal management chip drives the liquid crystal to display the corresponding field according to the display command received from the MCU, and at the same time drives the backlight to output the color of the liquid crystal display field. Althou...
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IPC IPC(8): G09G3/18
Inventor 李秉樵郑绪成陈建昌
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD