JPH0373927A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To obtain the liquid crystal display device which is economical and has a thin structure by forming a reflecting plate to a shape which is laterally symmetrical and vertically symmetrical, providing an illuminating light source at the center of the reflecting plate nd disposing two liquid crystal display plates on the respective opposite surfaces of light curtains facing each other. CONSTITUTION:The reflecting plate 15 has the reflecting plate which is oppositely curved and has the laterally symmetrical and vertically symmetrical shape. In addition, an aperture 16 is provided in the central part. The constitution to dispose the illuminating light source 12 in the aperture 16 is adopted. The light emitted from the illuminating light source 12 is divided to the right and left and the light reflected by the curved parts of the reflecting plate 15 passed the right and left light curtains 14, 14' and transmits the two liquid crystal display plates 11, 11' facing each other. The common use of the illuminating light 12 and the reflecting plate 15 is possible in this way and the opposite panel-shaped illuminating light source 12 is obtd. The liquid crystal display device which is not only economical but has the thin type structure is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a liquid crystal display for displaying a single image of a character in a television device, a personal computer device, a terminal device, etc.

2. Description of the Related Art Conventionally, this type of liquid crystal display device has a structure as shown in FIGS. 3a and 3b, which will be explained with reference to the drawings.

Reference numeral 1 denotes a liquid crystal display panel, which normally has a liquid crystal material sealed between two substrates, and displays liquid crystal display by supplying electricity to transparent electrodes arranged in a matrix on the inner wall. 2 is the illumination light source, which is a fluorescent tube,
Alternatively, it is a cold cathode tube, which is a light source that transmits light to a liquid crystal display panel and has a wavelength effect for display. Reference numeral 3 denotes a reflector that reflects and focuses the light from the side of the illumination light source 2 facing the liquid crystal.

4 is a light curtain for uniformly transmitting incident light to the liquid crystal display panel.

As can be seen from the configuration in the figure, the light emitted from the illumination light source 2 is reflected by the reflecting plate 3.
The light is focused in one direction, passes through the light curtain 4, and then passes through the liquid crystal display panel 1.

Problems to be Solved by the Invention As described above, in the conventional configuration, only one liquid crystal display panel in one direction is capable of transmitting light to the liquid crystal display panels disposed at opposing positions.

Therefore, if you want to display the display in opposing positions, you can use two of the same one, but this is not economically advantageous because of the thinness of the shape.

Means for Solving the Problem In order to solve this problem, the present invention arranges the illumination light sources to face each other in a planar manner, that is, the shape of the reflector is symmetrical both left and right and vertically, and the illumination light source is provided at the center of the reflector. , two liquid crystal display panels are arranged on opposing surfaces of the opposing lights.

Function: With this configuration, light can be transmitted through one illumination light source and two liquid crystal display panels arranged at opposite positions using a reflection plate.

Embodiment FIGS. 1A and 1B are diagrams showing an embodiment of the present invention, which is a method using a reflector. To illustrate, 11.11'
12 is a liquid crystal display board, 12 is an illumination light source, and 14° 14/ is a light curtain. Reference numeral 16 denotes a reflecting plate, which has opposing curved reflecting surfaces, has a laterally symmetrical and vertically symmetrical shape, and has an opening 16 in the center. The illumination light source 12 is arranged in the opening 16. Lighting light source 1
The light emitted from the light curtains 2 is divided into left and right sides, and the light reflected by the curved portion of the reflector plate 16 is split into the left and right light curtains 1.
4. Passed through 14' and faced the liquid crystal display board 11°11'
It passes through two things.

FIG. 2 is a diagram showing another embodiment of the present invention, which is a method using a light guide plate. To explain with a diagram, 17 is a light guide plate;
It has opposing curved exit surfaces and has a shape that is horizontally symmetrical and vertically symmetrical. Two illumination light sources 12 and 12/ are arranged above and below the light guide plate 17. The light emitted from each of the illumination light sources 12 and 12' is bent by the light guide plate 17, divided into left and right sides, passes through the left and right light curtains 14 and 14', and is directed to the facing liquid crystal display panel 11.
It transmits two parts of ゜11'.

Effects of the Invention As described above, the present invention provides a planar illumination light source in which the illumination light and the reflecting plate or light guide plate are used in common, which is not only economical but also has a simplified configuration. , an effect of a thin structure can be obtained.

[Brief explanation of drawings]

1A and 1B are a cross-sectional view and a partially cutaway front view showing a schematic configuration of a liquid crystal display according to an embodiment of the present invention, FIG. 2 is a sectional view of another embodiment of the present invention, and FIG. 3A , b are cross-sectional fixed and partially cutaway front views of a conventional example using a light guide plate. 11.11'...Liquid crystal display board, 12, 12'
......Illumination light source, 16...Reflector, 17
······Light guide plate. ■ Figure (αJ /2---5! Akiko Mitsuru (6) Figure 3 ((IJ (b) Figure

Claims (1)

[Claims] A liquid crystal display consists of two liquid crystal display panels arranged on opposing surfaces with illumination light sources facing each other in a planar manner.