JPH03182721A - Liquid crystal panel device - Google Patents

Abstract

PURPOSE:To reduce the power consumption by allowing a first glass substrate to support a first auxiliary transparent electrode having no relation to a transparent electrode and allowing a second glass substrate to support a second auxiliary transparent electrode having no relation to stripe-like transparent electrodes of a first group and a second group. CONSTITUTION:Stripe-like transparent electrodes 7 of a second group being many scanning electrodes brought to grade separation through a liquid crystal layer 6 to stripe-like transparent electrodes 4 of a first group are supported on the inside surface of a second glass substrate 3. In an auxiliary display area B provided in parallel to a color image display area A, a first auxiliary transparent electrode 8 having no relation to any of stripe-like transparent electrodes 4, 7 of a first group and a second group and the second auxiliary transparent electrode 9 are opposed mutually through the liquid crystal layer 6. A first auxiliary transparent electrode 8 is supported through a color filter layer 10 on the inside surface of a first glass substrate 2, and a second auxiliary transparent electrode 9 is supported on the inside surface of a second glass substrate 3. In such a way, the device is operated by comparatively small power consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a matrix-type color liquid crystal panel device suitable for a viewfinder of a video camera, a monitor of a video recorder, etc. The present invention relates to a matrix-type color liquid crystal panel device suitable for a viewfinder of a video camera, a monitor of a video recorder, etc. It is configured so that it can also display.

2. Description of the Related Art Conventionally, small monochrome CRTs have been mainly used as image display means in viewfinders of video cameras and monitors of video recorders. In addition, light emitting elements such as LEDs are used as an auxiliary device, and the color of the emitted light is used to display information other than image display, such as the operating status, and character signals to convey information such as the operating status are input to the CRT. Text or marks have also been inserted into the image area by superimposing them on the video signal.

Problems to be Solved by the Invention However, image display using a monochrome CRT has poor visibility, and for example, a video camera may mistakenly assume that a period in which recording is paused is in progress, or vice versa. There were many things to do. Also,
In order to eliminate such misperceptions, a color display function using LEDs has been added, but this configuration increases power consumption and requires a large capacity battery, which hinders the miniaturization and weight reduction of cameras. .

Means for Solving the Problems The present invention has been made to solve the problems of the prior art. a glass substrate supporting a first auxiliary transparent electrode unrelated to the transparent electrode, and a second group supporting a second group of striped transparent electrodes that three-dimensionally intersect with the striped transparent electrode via a liquid crystal layer. The first group and the second group are placed on a glass substrate of
A second auxiliary transparent electrode independent of the group of striped transparent electrodes is supported. The first and second auxiliary transparent electrodes are configured to face each other with a liquid crystal layer interposed therebetween in an auxiliary display area arranged in parallel with the color image display area.

Function: The liquid crystal panel device configured in this way is compact and operates with relatively low power consumption, and not only can the captured image be displayed in color in the color image display area, but also has an auxiliary display that performs a separate shutter operation. The operating status and other information can be displayed in a complex manner with good visibility in the area.

Embodiments Next, the present invention will be explained along with embodiments shown in the drawings.

The liquid crystal panel device 1 shown in FIG. 1 has first and second glass substrates 2 and 3, and a first group of striped transparent electrodes 4, which are a large number of signal electrodes, arranged in a color image display area A. , is supported on the inner surface of the first glass substrate 2 with a color filter layer 5 interposed therebetween. A second group of striped transparent electrodes 7, which are a large number of scanning electrodes, intersect three-dimensionally with the first group of striped transparent electrodes 4 via a liquid crystal layer 6.
are supported on the inner surface of a glass substrate 3, and these constitute a dot matrix color image display section.

A first auxiliary transparent electrode 8 and a second auxiliary transparent electrode that are unrelated to either the first group or the second group of striped transparent electrodes 4.7 are provided in the auxiliary display area B arranged in parallel with the color image display area A. The electrodes 9 face each other with the liquid crystal layer 6 in between. The first auxiliary transparent electrode 8 is supported on the inner surface of the first glass substrate 2 via the color filter layer 10, and the second auxiliary transparent electrode 9 is supported on the inner surface of the second glass substrate 3. . 11 and 12 are polarizing plates, and 13 is a spacer made of frit glass.

In this example, as shown in FIG. 2, the color filter layer 10 of the auxiliary display area B is provided with
A letter 14 ``cJ'' is attached, and when a predetermined voltage is applied to the first and second auxiliary transparent electrodes 8.9, the letter 4 itself or its surroundings stands out due to transmitted light.

The characters 14 may be dot-shaped or linear, and characters such as 'RECJ' may be attached at any corresponding position. Moreover, the color filter layers 5 and 10 may be provided on the second glass substrate 3 side. It is preferable that the color filter layer 10 in the auxiliary display area B has a different color from the color filter layer 5 in the color image display area A. Furthermore, there may be a plurality of auxiliary display areas B, and each color filter layer may have a different color.

For image display operation, the scanning electrode drive circuit 15 and the signal electrode drive circuit 16 are operated under synchronous control by a timing control circuit 17. When applied to a video camera, a predetermined voltage generated by the operation display signal generation circuit 18 is applied between the first and second auxiliary transparent electrodes 8 and 9 during a period in which rRECJ representing the recording state is desired to be displayed. During the period when the video camera is not performing recording operation, the first and second auxiliary transparent electrodes 8 are used to prevent light from passing through the liquid crystal layer 6.
, 9, a predetermined voltage is applied between them.

As in this embodiment, a matrix color image display section is used as an image display means of an electronic viewfinder,
If the auxiliary display section arranged in parallel with this section is displayed only during the recording operation of the video camera, it can be seen at a glance that the video camera is in the recording state, so that misidentification 4 can be prevented.

The electrode configuration of the color image display section does not have to be of a simple matrix type, and may be of an active matrix type liquid crystal panel in which each picture element is provided with a semiconductor switching element having two or more terminals of electrodes. Furthermore, rRECJ and other characters or symbols patterned on the auxiliary display section can be provided on either one of the pair of auxiliary transparent electrodes or on the black matrix layer on the color filter layer side.

Effects of the Invention As described above, according to the present invention, it is possible to obtain a composite display effect that not only displays color images but also displays other than images, and furthermore, since the display is performed using a liquid crystal panel, power consumption is reduced. The number of components required is very small, and it can be configured compactly.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a liquid crystal panel device embodying the present invention;
FIG. 2 is an operational circuit diagram of the device. DESCRIPTION OF SYMBOLS 1...Liquid crystal panel device, 2...First glass substrate, 3...Second glass substrate, 4...
...First group of striped transparent electrodes, 5...
・Color filter layer, 6...Liquid crystal layer, 7...
...Second group of striped transparent electrodes, 8...
First auxiliary transparent electrode, 9... Second auxiliary transparent electrode, 10... Color filter layer.

Claims (1)

[Claims] A first glass substrate supporting a first group of striped transparent electrodes arranged in a color image display area supports a first auxiliary transparent electrode unrelated to the transparent electrodes, and
A second glass substrate supporting a second group of striped transparent electrodes intersecting the striped transparent electrodes with a liquid crystal layer interposed therebetween is provided with a second glass substrate that supports a second group of striped transparent electrodes that are unrelated to the first and second groups of striped transparent electrodes. 1. A liquid crystal panel device supporting two auxiliary transparent electrodes, the first and second auxiliary transparent electrodes facing each other with a liquid crystal layer interposed in an auxiliary display area arranged in parallel with the color image display area.