JPH0687827U - LCD display panel for electronic scales - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] LC with reduced defects in parallel and series control
Provide a D display panel. [Structure] The partial area 4 arranged above the numeral 6 for displaying the weighing result is arranged with 12 5 × 7 arranged in parallel for simultaneous display of 12 arbitrary alphanumeric characters.
It is composed of a matrix. The other partial area 5
Is provided on the right side of the numeral 6 for displaying the weighing result,
It is used to display the weighing result unit of the weighing result. Partial area 5
Is a normal three 5 × 7 matrix 51, 52, 53
And two "half" matrices 54, 55 arranged underneath the first two matrices 51, 52. This half-matrix is made up of 5 × 3 matrix points each and is used for the display of the lack of length of the first two characters or symbols. Such a display of the shortage of length is advantageous when displaying "g" as a gram symbol, for example.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention has a numeral area for displaying the weighing result and an additional field which are composed of each segment, and each segment of the numeral for displaying the weighing result is provided with one lead wire, In addition, each segment is configured to be controllable in parallel, and in the additional field, additional information can be displayed for the user by using an alphanumeric character composed of each segment of the matrix. The present invention relates to an LCD display panel for an electronic scale in which each segment for an alphanumeric character of an additional field is interconnected so as to be serially controllable.

[0002]

[Prior art]

 Display panels of this kind are generally known. In this display panel, if it is desired to have a good contrast and a large viewing angle for good visibility, all the segments must be controlled continuously and thus in parallel. However, if there are many numbers or characters to be displayed, a large number of leads and terminals will be required. For example, if you want to display 6 numbers on a 7-segment device and 16 characters on a 5x7 dot matrix, you need 600 or more leads. In order to avoid such a large number of lead wires and contact connection points, various characters must be controlled in series by switching from the static motion arrangement structure to the multiplex motion structure. With serial control, only 6 + 9 + 7 + 85 = 107 lead wires are required in the case of the previous embodiment.

[0003]

[Problems to be solved by the device]

 In the case of the series control embodiment described above, only 107 lead wires are required, but the contrast is lost, and the visible gaze angle becomes relatively small.

An object of the present invention is to provide an LCD display panel of the type described above in which the aforementioned drawbacks of parallel and series control are minimized.

[0005]

[Means for Solving the Problems]

 According to the present invention, the problem is that an additional field is provided to the right of the number for displaying the weighing result, and the additional field has at least four matrices, and three of the four matrices are phase-matched. Arranged side by side in the usual matrix form, the fourth matrix is divided into two halves, one each of which is provided underneath the first two matrices, For both the matrices showing the first two characters, the descender, that is, the base line hanging part of the type with the base line hanging part, can be displayed so that the length shortage can be displayed. Will be resolved.

[0006]

【Example】

 FIG. 1 shows a perspective view of an electronic scale having an LCD display panel of the present invention.

FIG. 1 shows a casing 1 of an electronic scale and a tray 2 on which an object to be weighed is placed. The original measuring device of the balance can operate according to any method that delivers digital or digitizable measurement results. A usual method is, for example, a method using a wire strain gauge provided on a horizontal surface, an electromagnetic force compensation type, or a vibration string type. The measurement result is displayed on the LCD display panel 3 by the numeral 6 composed of each segment. In addition to the numerical display, the alphanumeric character 5 for displaying the measurement unit and other alphanumeric characters 4 can be displayed on the display panel 3 as additional information. The content of this additional information is, for example, data about the weighing program that is being used, for example, data such as "counting balance (Zaehlwaage)". Alternatively, this additional information can be used to guide the user. That is, for example, in the case of initial setting of the counting balance program, it is possible to include a display such as “10 pieces (10 St. aufleg en)”. Alternatively, this additional information may include an indication that the limit has been exceeded, eg, "Overflow". Further, FIG. 1 shows operation keys 7, 8 and 9, which are used for weighing and for range switching as usual.

In FIG. 2, the LCD display panel 3 is again shown generally. The LCD display panel 3 includes a front glass plate 31 and a rear glass plate 32, and a thin liquid crystal layer 33 is provided between the front glass plate 31 and the rear glass plate 32. Due to the small thickness of the liquid crystal layer 33, the liquid crystal layer 33 in FIG. 2 shows the separation line between the two glass plates as a relatively thick line because of its small thickness. As is well known, the light transmittance of the liquid crystal layer 33 is controlled by a thin segment-shaped electrode provided below the front glass plate 31 and a counter electrode provided above the rear glass plate 32. At that time, the electrodes forming 7 segments of the number and 2 segments of the decimal point and the comma are drawn out individually for each of the numbers 6 for displaying the weighing result. Included in one plane. As a result, the numbers, decimal points, commas, and special character + /-/ o segments can be controlled in parallel, and good contrast can be obtained.

The alphanumeric characters 4 and 5 for additional information are composed of 5 × 7 matrix (see FIG. 3). The points of the matrix are constituted by the electrode layers on the back side of the front glass plate 31 and the respective vertical points of the whole matrix are electrically connected to one another. This is shown in the upper right of FIG. 3 as an example of matrix points. Therefore, in FIG. 3, 85 columns are obtained. The counter electrode provided on the upper surface of the rear glass plate 32 is divided into individual partial surfaces. Each subsurface then covers exactly one row of the entire matrix. A 5 × 7 matrix gives 7 lines (Fig. 3). By doing so, the individual alphanumeric characters of the additional field can be serially controlled in a known manner. As a result, the number of lead wires required for the display panel is significantly reduced. FIG. 2 shows only some of these lead wires 34 to the opposite electrode provided on the upper surface of the rear glass plate 32. FIG. 3 shows, as an embodiment, each lead wire 41 for the entire column and each lead wire 41a for the entire row of the counter electrodes. The control lines for the seven segments of numbers and the decimal point and the comma for the number display 6 are indicated by the leads 42, of which the lowest number 43 control line is indicated by 42a.

Further, FIG. 3 shows that the additional field is divided into two partial areas 4 and 5. The partial area 4, which is arranged above the number 6 for displaying the weighing result, consists of 12 side-by-side 5 × 7 matrices for the simultaneous display of 12 arbitrary alphanumeric characters in this example. It is configured. The other partial area 5 is provided on the right side of the numeral 6 for displaying the measurement result, and is used for displaying the measurement value unit of the measurement result. The sub-region 5 consists of three normal 5 × 7 matrices 51, 52, 53 and two “half” matrices 54, 55 arranged underneath the first two matrices 51, 52. There is. This half-matrix, each consisting of 5x3 matrix points, is used to represent the underlength of the first two characters or symbols. The display of such a shortage is advantageous, for example, when displaying "g" as a gram symbol. Both "half" matrices 54, 55 are controlled together by the display's controlling microprocessor in the same manner as a normal 5x7 matrix (one row missing).

Therefore, in this embodiment, both partial areas of the additional field have a total size of 16 characters. The 16 characters are advantageously controlled together in series, thus resulting in an on / off (no control) ratio of 1: 8 based on a 5x7 matrix.

It goes without saying that other geometrical arrangements are also possible for the display digits of the weighing result and the additional fields. For example, an additional field can be provided below the display digits for the weighing result. Alternatively, alphanumeric characters can be displayed in a 7x9 matrix to allow finer display. It is also possible to select the matrix of the partial area 5 for displaying the measurement value unit larger than the matrix of the partial area 4. For example, this matrix can be as large as the numeral 6 for displaying the weighing result. The number of matrices can be variously selected according to need. Advantageously, other on / off (control) ratios can also be used when controlling the matrix in series. It goes without saying that in the case of direct control, the configuration of the points of the matrix can be selected differently.

[0013]

[Effect of device]

 According to the LCD display panel for electronic scale of the present invention, important information that changes frequently, that is, digital weighing result, can be displayed with good contrast and can be easily read (thus to each individual segment). However, the cost of the lead wire is reasonable, but it is acceptable. On the other hand, additional information that changes relatively infrequently, usually only after operating a key, is serially controlled in a multiplex operation. Be done). In the display panel of the present invention, for example, in the case of an embodiment in which 6 numbers are displayed by a 7 segment device and 16 characters are displayed in a 5 × 7 point matrix, some of them are controlled in parallel, and Since the other part is controlled in series, only 6 × 9 + 3 + 7 + 85 = 149 lead wires are required. Therefore, the number of lead lines can be reduced to 1/4 or less as compared with the case of only parallel control.

According to the present invention, not only the respective segments of the numerical result display numbers are controlled in parallel on one display panel, and the respective segments for the alphanumeric characters of the additional field are controlled in series, as well as each of which should be controlled in series. It is also possible to display detailed information via the configuration of the matrix element, in order to display a shortage of length, which is the descender, ie the baseline droop of the type with the baseline droop. The matrix is divided into two sub-matrices.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic scale having an LCD display panel of the present invention.

FIG. 2 is a perspective view of a display panel used in the electronic scale of FIG. 1 in which an upper glass plate is partially removed.

FIG. 3 is a diagram showing each segment and a lead wire of an embodiment of the LCD display panel of the present invention.

[Explanation of symbols]

 1 casing 2 saucer 3 LCD display panel 4,5 additional field 6 number 7,8,9 operation key 31,32 glass plate 33 liquid crystal layer 34,41,42 lead wire 51,52,53 character 54,55 half

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Franz-Josef Merchel Haldeksen Rosenstraße 18

Claims (6)

[Scope of utility model registration request] 1. A measurement result display numeral area and an additional field each of which is composed of each segment,
Each segment of the display numeral (6) for the weighing result is provided with one lead wire (42), and each segment is configured to be controllable in parallel. It is configured such that additional information can be displayed for the user by using an alphanumeric character composed of segments, and each segment for the alphanumeric character of the additional field is serially controllable to each other. In the connected LCD display panel for an electronic scale, an additional field (5) is provided on the right side of the numeral (6) for displaying the weighing result, and the additional field (5) has at least four matrices. Three of the three matrices (51, 52, 53) are arranged side by side in their normal matrix. Is disposed in the box-shaped, the fourth matrix is divided into two halves (54, 55), both said halves each one at the first of the two matrices (5
1, 52) underneath, and an LCD display for an electronic scale configured so that a descender can also be displayed for both the matrices (51, 52) showing the first two characters. panel. 2. The LCD display panel for an electronic scale according to claim 1, wherein the additional field (5) is configured to be used for displaying a unit of a measurement value of a measurement result. 3. The LCD display panel for an electronic scale according to claim 1, wherein another additional field (4) is provided above the numeral (6) for displaying the weighing result. 4. One or more additional fields (4,
The LCD display panel for an electronic scale according to any one of claims 1 to 3, wherein the alphanumeric character of 5) is composed of each segment of a 5 × 7 matrix. 5. One or more additional fields (4,
The LCD display panel for an electronic scale according to any one of claims 1 to 3, wherein the alphanumeric character of 5) is composed of each segment of a 7 × 9 matrix. 6. A utility model registration claim in which both additional fields (4, 5) have a total of 16 matrices and are arranged to be serially controlled with an on / off ratio or control ratio of 1: 8. Any one of range 2 to 5
Item 2. An LCD display panel for an electronic scale according to the item.