JPH079133Y2 - Liquid crystal display for displaying numerical information - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a numerical information display used as a display means for displaying numerical information such as a vehicle-to-vehicle distance before and after running a vehicle, a relative speed measuring device, and the like. The present invention relates to a liquid crystal display device.

[Prior art]

Conventionally, this type of liquid crystal display device is mounted on, for example, a dash board in a vehicle compartment and measures the vehicle front distance in front of the vehicle to display the information on the inter-vehicle distance on a display surface 21 as shown in FIG. 3-digit day-shaped display segment 22 ₁ , 2
A liquid crystal display device configured by arranging 2 ₂ and 22 ₃ was color-displayed with a single color such as green or red.

[Problems to be solved by the device]

However, the conventional liquid crystal display device for displaying numerical information is
Only the numerical information of the measured inter-vehicle distance is displayed in a single color display, and it is sometimes difficult to judge whether the displayed numerical information is within the range of stability or danger.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and its purpose is to display a liquid crystal for displaying numerical information capable of simultaneously displaying a pattern even within the range of safety and danger of numerical information. It is to provide a display device.

[Means for Solving the Problems]

A liquid crystal display device for displaying numerical information according to the present invention is a translucent upper substrate and a lower substrate, which are arranged to face each other, and a plurality of digits in the shape of a letter, which are arranged to face each other on the facing surfaces of the upper substrate and the lower substrate. The display segment comprises a plurality of sets of common electrodes forming a segment, a segment electrode, a color filter disposed on the upper surface or the lower surface of the segment electrode, and a liquid crystal sealed between an upper substrate and a lower substrate. A day-shaped first display segment for displaying a color in color, and a day character for displaying the second color in color, which is formed so as to surround the first display segment along the outside of the first display segment. At least a second display segment of
The second display segment performs pattern display having the same shape as the pattern display by the first display segment but different in pattern display size.

[Action]

In the present invention, the numerical information is pattern-displayed in different display colors for the first display segment and the second display segment.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of a liquid crystal display device for displaying numerical information according to the present invention. FIG. 1 (a) is a plan view and FIG. 1 (b) is an enlarged view of line BB 'in FIG. 1 (a). The cross-sectional view and FIG. 7C are enlarged cross-sectional views taken along the line CC ′ of FIG. In FIG. 3A, a 3-digit display segment 2 (2 ₁ , 2 ₂ , 2 ₃ ) for displaying numerical information in a pattern is formed on the front display surface 1 which constitutes the liquid crystal display device for displaying numerical information. Each of these display segments 2 ₁ , 2 ₂ , 2 ₃ has different shapes and display colors from each other, such as large, medium and small day letter segments 3 ₁ , 3 ₂ ,
3 ₃ are combined and configured. That shaped segments 3 of _the largest day shape performs red display, shaped segments 3 ₂ days Medium formed inside the shape segments 3 ₁ of this day performs yellow display, this day shaped segments 3 ₃ small day formed inside the shaped segments 3 ₂ green display is performed.

In addition, the numerical information display device formed in this way has an opposing surface between an upper substrate 11 and a lower substrate 12 made of a translucent glass plate which are arranged so as to face each other, as shown in FIGS. A common electrode 13 made of a transparent conductive film and segment electrodes 14 ₁ , 1 on which the above-mentioned letter segments 3 ₁ , 3 ₂ , 3 ₃ are formed respectively.
4 ₂ and 14 ₃ are arranged to face each other, and the common electrode 13
Liquid crystal alignment film with rubbing treatment on the surface
On the segment electrodes 14 ₁ , 14 ₂ and 14 ₃ formed on the lower substrate 12 and further arranged on the lower substrate 12, three color filters 16 _R , 16 _O and 16 _{G of} red, orange and green respectively. , Are formed and arranged, and a liquid crystal alignment film 15 whose surface is subjected to a rubbing treatment is formed and arranged on these surfaces. Then, although not shown, the upper substrate 11 and the lower substrate 12 are separated by a predetermined distance, and the peripheral portion thereof is sealed by a sealing material containing a spacer to form an envelope (empty cell). A liquid crystal display element 18 is formed by enclosing a TN (Twisted Nematic) liquid crystal 17 inside the envelope. Further, although not shown, on the outer surface of the liquid crystal display element 18, that is, on the outer surfaces of the upper substrate 11 and the lower substrate 12, by arranging an upper polarizing plate and a lower polarizing plate with their polarization axes or absorption axes parallel to each other, respectively. A liquid crystal display device for displaying numerical information for color display is configured.

In such a configuration, for example, when the vehicle is traveling at a safe inter-vehicle distance, a predetermined distance output from the inter-vehicle distance measuring device is output between the segment electrode 14 ₃ formed with the green color filter 16 _G and the common electrode 13. When the signal voltage is applied, the optical properties of the TN liquid crystal 17 are changed, that is, the light incident on the liquid crystal portion corresponding to the green color filter 16 _G is transmitted, so that the display surface 1 is shown in FIG. As shown in (c), a numerical value (for example, 256 m) is displayed in green in a pattern of small figures, which can be recognized as safe inter-vehicle distance travel. Further, when the traveling with the inter-vehicle distance required attention, a predetermined signal voltage is applied which is output from the inter-vehicle distance measuring device between the segment electrode 14 ₂ of orange color filter 16 _O is formed as a common electrode 13 As a result, the light incident on the liquid crystal part corresponding to the orange color filter 16 _O is transmitted, and as shown in FIG. 2 (b), the display surface 1 has a yellow display and a numerical value (for example, 88 m) of a slightly large number. The pattern is displayed with, and attention can be given as the inter-vehicle distance traveling requiring attention. When the vehicle travels at a more dangerous inter-vehicle distance, a predetermined signal voltage output from the inter-vehicle distance measuring device is applied between the segment electrode 14 ₁ on which the red color filter 16 _R is formed and the common electrode 13. , The light incident on the liquid crystal portion corresponding to the red color filter 16 _R is transmitted, and as shown in FIG. 2 (a), a numerical value (for example, 37 m) is displayed as a pattern on the display surface 1 in the largest shape, Warning can be given as a dangerous inter-vehicle distance driving.

In addition, in the above-described embodiment, the green color filter is used as the color filter for recognizing the stability, and the orange color filter is used as the color filter requiring attention, but the blue color filter and the yellow color filter may be used. Needless to say.

In the embodiment described above, shown in the middle portion of the shaped segments 3 ₃ days to perform the shaped segments 3 ₂ and green color display the day of the orange color display, that is, the first diagram (e) arrow C- Arrangement of the segment electrodes in the C ′ line direction is arranged in the order of the red color display segment electrode 14 ₁ , the green color display segment electrode 14 ₃ and the red color display segment electrode 14 ₁ , and the red color display segment electrode 14 ₁ and segment electrode 1 for green color display
4 by ₃ and applying a predetermined voltage simultaneously, it has been described which enables an orange color display as unnecessary orange color display segment electrode 14 _2, the C-
The arrangement of the segment electrodes in the C ′ line direction is as follows: red color display segment electrode 14 ₁ , orange (yellow) color display segment electrode 14 ₂ , green (blue) color display segment electrode 1
Needless to say, it is also possible to arrange 4 ₃ , the segment electrode 14 ₂ for orange (yellow) color display, and the segment electrode 14 ₁ for red color display.

Further, in the above-mentioned embodiment, the case where three colors of red, orange (yellow) and green (blue) are used as the display colors has been described, but the present invention is not limited to this. It is needless to say that the same effect can be obtained by using two kinds of display segments and combining them with any two color display.

[Effect of device]

As described above, according to the present invention, the numerical information is displayed in the first display segment and the second display segment by changing the display color and the size of the shape of the display pattern. The degree of traffic can be recognized on an easy-to-see display, and it is possible to obtain extremely excellent effects such as contributing to improving traffic safety.

[Brief description of drawings]

1 (a) to 1 (c) are views for explaining the configuration of an embodiment of the liquid crystal display device for displaying numerical information of the present invention, and FIGS. 2 (a) to (c) are numerical information display according to the present invention. FIG. 3 is a plan view illustrating a conventional liquid crystal display device for displaying numerical information, showing an example in which numerical information is displayed by the liquid crystal display device. 1 …… Display surface, 2 (2 ₁ , 2 ₂ , 2 ₃ ) …… Display segment,
3 ₁ , 3 ₂ , 3 ₃ …… Date-shaped segment, 11 …… Upper substrate, 12
...... Lower substrate, 13 ...... Common electrode, 14 ₁ , 14 ₂ , 14 ₃ …… Segment electrode, 15 …… Liquid crystal alignment film, 16 _R …… Red color filter, 16 _O …… Orange color filter, 16 _G … … Green color filter, 17 …… Liquid crystal, 18 …… Liquid crystal display element.

Claims (1)

[Scope of utility model registration request] 1. A translucent upper substrate and a lower substrate, which are opposed to each other,
A plurality of sets of common electrodes and segment electrodes, which are arranged on the facing surfaces of the upper substrate and the lower substrate, respectively, and form a plurality of digit-shaped display segments, and a color filter arranged on the upper surface or the lower surface of the segment electrodes. And a liquid crystal sealed between an upper substrate and a lower substrate, wherein the display segment is a letter-shaped first display segment for color-displaying the first color, and an outer side of the first display segment. At least a second letter-shaped second display segment that is formed to surround the first display segment and color-displays the second color, and the second display segment has a pattern display and a shape of the first display segment. A liquid crystal display device for displaying numerical information, wherein the liquid crystal display device performs the pattern display with the same size and different pattern display sizes.