JPH068628Y2 - Multi-segment display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a liquid crystal display (LCD) or a light emitting diode.
The present invention relates to a multi-segment display that includes a large number of segments (LEDs) and displays numbers and English characters by lighting or visually recognizing a predetermined combination of segments selected from the large number of segments.

[Conventional technology]

As a multi-segment display for displaying only the numbers 0-9, 7 segments are arranged in the shape of "8".
Segment indicators are well known.

Further, a multi-segment display capable of arbitrarily indicating alphabets A to Z in addition to numbers is also well known. Since this display device can display alphabets in any combination, it is used for a display device that outputs messages of various English characters, for example, a display device for displaying the operation of a radio device. A so-called union jack pattern is representative of this.

FIG. 3 shows the numbers 0 to 9 and the letters A to Z expressed in this union jack pattern. Above each display pattern, the letters or numbers that the pattern represents are attached. A thin segment represents a non-lit or non-visible segment, and a thick segment represents a lit or visible segment.

The display of the character "A" will be described as an example. This union jack pattern consists of 16 segments, 12 segments 1 to 12 arranged in a "T" shape and 4 segments 13 to 16 extending from four corners toward the center. "A"
When displaying the character, the segments 1, 2, 3, 4, 7, 8, 8, 10 and 12 are turned on or visible as shown in the figure to represent the character "A".

In addition to this, the expression "segment" is not suitable for a display for displaying alphanumeric characters, but it is composed of 35 dots arranged in a 5 x 7 matrix, and a predetermined dot selected from them. There is also an indicator that displays alphanumeric characters by illuminating or making visible.

[Problems to be solved by the device]

Control devices for controlling electronic devices are becoming smaller due to downsizing of products and lower cost, and they are often realized by one LSI including peripheral controls other than the display. In addition, since various display contents are required, the number of digits to be displayed is increasing.

Therefore, if the number of segments per digit is large, the number of control signals for controlling the entire display device having a large number of digits is increased, and the number of pins of the control LSI is increased. Conversely speaking, LSI1 with a limited number of pins
The number of display digits that can be controlled per piece is controlled.

Therefore, an object of the present invention is to propose a multi-segment display capable of expressing the numbers 0 to 9 and the alphabet A to Z with a smaller number of segments than the conventional display.

[Means for Solving the Problems]

FIG. 1 shows the structure of a multi-segment display according to the present invention and the alphanumeric characters represented by the display. Similar to FIG. 3, the display of “A” will be described as an example.

In the figure, the multi-segment display according to the present invention shows a first segment 101 extending from the upper left to the upper right of each display area, a second segment 102 extending from the upper right to the center of the right side, a third segment 103 extending from the center of the right to the lower right, and right. The fourth segment 104 extends from the bottom to the bottom left, the fifth segment 105 extends from the bottom left to the left center, the sixth segment 106 extends from the left center to the top left, the seventh segment 107 extends from the top center to the center, and the center to bottom center 8th segment growing 10
8, 9th segment 109 extending from the center on the left side to the center, 10th segment 110 extending from the center to the center on the right side, 11th segment extending from the upper right to the center and further extending from the center to the lower left
Segment 111, and 12th extending from the center to the lower right
It is characterized by including a segment 112.

[Action]

As in FIG. 3, thick segments in FIG. 1 represent illuminated or visible segments.

The letter "A" can be represented by making the segments 102, 103, 110, 111 lit or visible.
Other representations of numbers or letters are also apparent in the figure.

〔Example〕

FIG. 2 is a diagram showing an example in which the multi-segment display device according to the present invention is applied to a liquid crystal display driven at 1/4 duty. Column (a) shows the printed circuit pattern of the select electrode, and column (b) shows the printed circuit pattern of the common electrode.

In column (b), 12 segments for each digit x 10 = 120 segments are divided into 4 segments, and segments 201, 207 and 206 of each digit are divided.
To common line C0, segments 202, 211 and 209 to common line C1, and segments 210, 208 and 205 to common line C2
, And the segments 204, 212 and 203 are connected to the common line C3, respectively.

In column (a), the rightmost segment 301, 302, 31
0 and 303 to segment line S0, segments 307, 311 and 30
8 and 312 go to the select line S1 and the segments 306, 309, 305
And 304 are connected to the select line S2. Similarly for other digits, select lines S3 to S29 are connected to each segment.

Each segment has select lines S0 to S0 connected to it.
Only when both S29 and the common lines C0 to C3 are activated, the light is turned on and it continues for a certain period. For example, a case where the character "A" is displayed in the leftmost digit will be described. While the common line C0 is valid, none of the select lines C27 to 29 is valid, and while the common line C1 is valid, the select lines S27 and S28 are valid and the segment (202; 302) , (211; 311) are lit, the select line S27 is enabled and the segment (210; 310) is lit while the common line C2 is valid, and the select is performed while the common line C3 is valid. The line S27 is activated to light the segment (203; 303). As a result, the character "A" is displayed in the leftmost digit.

As described above, in this example, a total of 34 control lines of the select line 30 + the common line 4 can display an arbitrary number or alphabet in each digit. In order to turn on alphanumeric characters with the same number of digits in the union jack pattern described above, 44 control lines are required in the calculation of 16 × 10/4 + 4 = 44.

[Effect of device]

As described above, the multi-segment display device of the present invention can display a large amount of information with a relatively small number of control lines, which greatly contributes to downsizing and high functionality of the device. .

[Brief description of drawings]

FIG. 1 is a diagram for explaining the display of alphanumeric characters by the multi-segment display of the present invention, FIG. 2 is a diagram showing an embodiment of the present invention, and FIG. 3 is a diagram of alphanumeric characters in a conventional union jack pattern. The figure for demonstrating a display. In the figure, C0 to C3 ... common line, S0 to S29 ... select line.

Claims (1)

[Scope of utility model registration request] 1. A first segment (101) extending from the upper left to the upper right of each display area, a second segment (102) extending from the upper right to the right center, and a third segment extending from the right center to the lower right.
(103), 4th segment (104) extending from lower right to lower left, 5th segment (105) extending from lower left to left center, 6th segment (106) extending from left center to upper left, extending from upper center to center 7th segment (107), 8th segment (108) extending from the center to the lower center, 9th segment (109) extending from the left center to the center, 10th segment (110) extending from the center to the right center, upper right The eleventh segment extending from the center to the lower left of the center (1
11), and the 12th segment extending from the center to the lower right
A multi-segment display comprising (112).