JPH0622815Y2 - Display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a display device for indicating a traveling (navigation) state of a vehicle, a ship, an aircraft, etc., and particularly, an instruction amount corresponding to an instruction input value, The present invention relates to an indicating instrument for displaying a liquid crystal while calibrating a laser beam while giving a command.

[Prior Art] As a conventional display device of this type, there is, for example, a structure as shown in FIG. 3 and FIG.

In the figure, 1 is a chip-on-glass type liquid crystal cell 2
And a polarizing plate 3, 3 provided on the front and rear of the liquid crystal cell 2, respectively. The polarizing axes of the polarizing plates 3, 3 are arranged so as to positively display the display portion of the liquid crystal cell 2. Has been done.

The liquid crystal cell 2 encloses the TN liquid crystal 23 between a pair of translucent substrates 21 and 22 facing each other via a spacer 20, and one translucent substrate 21 has an inner surface as shown in FIG. For example, a display electrode 24 that indicates a speed scale and a scale value and serves as a positive display portion is provided, and a common electrode 26 is provided on the inner surface side of the other translucent substrate 22. Further, the light-transmissive substrate 21 is mixed with the light-reflecting fine particles (pigment) within a range indicated by a semicircular one-dot chain line in FIG. When a light beam such as a laser beam is incident from the end face of the light beam, the light beam is reflected by the light-reflecting fine particles and can be visually observed in a linear shape 25.

Reference numeral 4 denotes a drive unit including a movement for driving a pointer used in, for example, a speedometer of an automobile, and the rotary drive shaft 41 parallel to the optical axis of the liquid crystal display panel 1 has one of the translucent substrates 2
A first reflection mirror 5 that reflects the laser beam is fixed to the end face of No. 1 perpendicularly. Reference numeral 6 denotes a second reflecting mirror fixed to the liquid crystal cell 2 so that the laser beam A from a laser oscillator (not shown) is reflected toward the first reflecting mirror 5.

That is, since the laser beam A is swung according to the rotation of the rotary drive shaft 41 by driving the drive unit 4, the pseudo pointer by the laser beam (shown by the broken line in FIG. 4) in one of the translucent substrates 21. 25 will be formed.

Reference numeral 7 denotes a dome-shaped light diffusing and reflecting plate that forms a space 71 behind the liquid crystal display panel 1 so as to give a sense of depth to the display portion of the liquid crystal display panel 1 and the pseudo pointer 25 by the laser beam A. There is. Reference numeral 8 denotes a cold cathode electric tube which is arranged around the light diffusing / reflecting plate 7 or a part thereof to illuminate the surface of the light diffusing / reflecting plate 7 substantially uniformly, and the light from the discharge tube 8 directly enters the eyes. Umbrella 9 for avoiding this is discharge tube 8
Is installed near.

That is, the display portion of the liquid crystal display panel 1 is a positive display, the pseudo pointer 25 by the laser beam A is displayed in a linear shape, and the liquid crystal display panel 1 is illuminated by the light diffused and reflected by the inner surface of the light diffusing and reflecting plate 7. Therefore, each display unit is displayed three-dimensionally.

[Problems to be Solved by the Invention] However, such a conventional display device has a structure in which the laser beam A is made incident on the transparent substrate 21 which constitutes the liquid crystal display panel 1. Therefore, for example, the display shape of the liquid crystal display surface or the laser beam A
When it is desired to change the shape, color tone, etc. of the pseudo pointer 25, the liquid crystal display panel 1 provided with the translucent substrate 21 having the above-mentioned special structure is replaced or the translucent substrate 21 is replaced. Therefore, it is difficult to give variations to the display mode of the display device.

[Means for Solving the Problems] The present invention has been made in view of such conventional problems, and a liquid crystal display panel and a transparent panel in which a pigment is mixed are arranged in parallel, and the liquid crystal display panel is provided. It is possible to display scales, numerical values, etc. with a transparent panel, and to display a pseudo pointer, and display variations can be provided by replacing either or both of the liquid crystal display panel and the transparent panel. It is to provide a display device capable of performing the above.

[Embodiment] The present invention will be described in detail below with reference to an embodiment shown in FIGS. 1 and 2. The same parts of the structure of this embodiment and the structure described in the conventional example are the same as those in the conventional example. Attach the code used,
The description of the same structural parts is omitted.

That is, the liquid crystal display panel 1 in this embodiment is a positive type liquid crystal display panel in which the liquid crystal 23 is sealed between the pair of translucent substrates 21 and 22, and the front peripheral portion of the liquid crystal display panel 1 is a liquid crystal display panel 1. The scale, numerical values, etc. 24 can be positively displayed on the screen. Reference numeral 27 denotes a transparent panel which is superposed on the back side of the liquid crystal display panel 1, in which transparent pigment which receives the laser beam A reflected by the reflection mirror 5 and is reflected is mixed. Is.

Therefore, according to this embodiment, the scale, numerical values, etc. 24 are displayed by positive display on the surface of the liquid crystal display panel 1, and the laser beam A is guided into the transparent panel 27 so that a linear shape is formed in the transparent panel 27. Since it is displayed as the pseudo pointer 25, the display of the liquid crystal display panel 1 can be changed, for example, when it is desired to change the mode such as the scale, the arrangement of numerical values, etc., the shape, etc. displayed on the front surface of the display device. It is only necessary to change the mode, and when it is desired to change the shape color tone of the pseudo pointer 25, the desired display pattern can be changed by exchanging it with another transparent panel 27 in which a different pigment is mixed. Although the transparent panel 27 is provided on the back side of the liquid crystal display panel 1 in the above embodiment, the present invention is not limited to this.
The transparent panel 27 may be arranged on the front side of the liquid crystal display panel 1.

[Advantages of the Invention] As described above, according to the present invention, the transparent panel 27 in which the pigment is mixed is placed on either the front surface or the rear surface of the positive type liquid crystal display panel 1 in an overlapping manner, and the transparent panel 27 is further provided.
In addition, since the display device is provided with a light guide means for making a pseudo pointer display by making a light beam incident from its side surface, according to this, the arrangement, shape, etc. of the scales, numerical values, etc. displayed on the front surface of this display device. If you want to change the mode such as
If the display mode of the liquid crystal display panel 1 may be changed, or if the shape color tone of the pseudo pointer 25 is desired to be changed, a desired display pattern can be obtained by exchanging it with another transparent panel 27 containing a different pigment. The effect is that it can be changed.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing an embodiment of a display device according to the present invention, FIG. 2 is a front explanatory view thereof, and FIGS. 3 and 4 are explanatory views of a conventional example. 24 ... Positive display, 25 ... Pseudo pointer 27 ... Transparent panel

Claims (1)

[Scope of utility model registration request] 1. A positive type liquid crystal display panel (1) is provided with a transparent panel (27) in which a pigment is mixed, which is superposed on one of the front side and the rear side of the positive type liquid crystal display panel (1) and the side surface of the transparent panel (27). A display device, characterized in that it is provided with a light guide means for causing a light beam to be incident from the display and displaying a pseudo pointer.