Segment liquid crystal character display control method and circuit

Abstract

The invention discloses a segment liquid crystal character display control method and circuit. The method comprises the steps that a pattern formed by segment electrodes is determined; the combination modes of different segment electrodes in the pattern are determined according to characters required to be displayed so as to obtain all the field groups, and each field group includes one or multiple segment electrodes; a driving pin is arranged for each field group, and the driving pin of the corresponding field group is connected on each segment electrode of the field group; all the corresponding field groups of all the characters required to be displayed and the control logic thereof are determined; and when the characters require to be displayed, the output level of each driving pin is controlled according to the corresponding control logic of the characters. With application of the segment liquid crystal character display control method and circuit, the driving pins required for displaying the characters can be reduced and the resources can be optimized.

Description

technical field [0001] The invention relates to the field of digital display control, in particular to a segment liquid crystal character display control method and circuit. Background technique [0002] Segment LCD, also known as segment code LCD, is one of the liquid crystal products, mainly replacing LED digital tubes. Due to the advantages of low price, low driving cost, simple operation, and free format, segment liquid crystal has been widely used, such as calculators, clocks, etc., and the displayed content is all digital. Compared with the pixels of dot-matrix liquid crystals arranged in an array, the pixels of segment liquid crystals are very free in arrangement and shape. The most common is the "8" field similar to the digital tube. That's 7 pixels. Of course, the segment of the segment liquid crystal can be made into any shape, as long as the driving capability of the driver chip permits. Such as the company's logo, other patterns, text and so on. [0003] In t...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of static driving is that each segment electrode needs a control element. When the number of digits displayed is large, the corresponding number of driving elements and lead terminals will be too many, so its application is limited.

Moreover, for some electronic devices, it is not necessary to display all 0-9 when displaying numbers, such as a thermostat, and the decimal part usually only needs to display 0 and 5. According to the existing driving method, it will undoubtedly cause a waste of driving pin resources.

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