JPS61182081A - Liquid crystal display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (a) Purpose of the Invention [Field of Industrial Application] This invention relates to a liquid crystal display device, and particularly relates to a calculator, a watch, and a liquid crystal display device.
The present invention relates to liquid crystal display devices used in measuring instruments, OA equipment, etc.

[Prior art]

A liquid crystal display device is a non-emissive type display device that modulates natural light or illumination light from other illumination sources by controlling light transmittance and reflectance 1 to display a pattern. Because they are more compact and consume less power than other display devices, they are widely used in portable devices such as trains, watches, and measuring instruments.

[Problem that the invention seeks to solve]

Such conventional liquid crystal display devices have the following problems that need to be solved.

(1) Generally, the display section of a liquid crystal display device is often small, and the display tends to be difficult to read.

(2) Since it is a non-emissive type, it is difficult to clearly read the display when there is little sunlight to the display device.

This invention was made in view of the above circumstances, and provides a liquid crystal display device that selectively uses a Fresnel lens to enlarge the display and let in external light, thereby making the display easy to read. The present invention provides a display device.

(B) Structure of the Invention The present invention includes a liquid crystal display panel, a rectangular convex lens that is composed of a Fresnel lens and covers almost the top surface of the panel;
Supporting means is provided on a pair of opposing edges of the panel and detachably supports either end of the lens, and the angle between the panel and the lens can be set and adjusted. It is characterized by

The liquid crystal display panel is a display panel in which the peripheral edges of two transparent substrates are glued together to form a minute gap, and the gap is filled with a liquid crystal material.

The Fresnel lens is a plastic plate with fine annular grooves cut into the surface so that the whole acts as a lens, and is often used in camera focusing glasses and projector viewing lenses. It is a lens equivalent to that of the original.

〔Example〕

The present invention will be described in detail below based on embodiments shown in the drawings.

Note that this invention is not limited to this.

In Figures 1 and 2, (1) is a liquid crystal display panel, (2) is a Fresnel lens, and panel (1)
A rectangular convex lens that almost covers the top surface of (3a).

(3b) is provided at a pair of opposing edges of the panel (1), and detachably supports either end of the lens (2), and also connects the panel (1) and the lens (2). A hinge-type rear holder and a front holder whose angles (α) and (β) can be set and adjusted, and (4) are devices such as a calculator equipped with a liquid crystal display panel (1). Also, (5a)
(5b) extends from the rear holder (3a) and the front holder (3b), the lens holder with projections (8a) (8b) is a plate □, and (6a) (6b) represents the rear holder (
3a) and the lens retainer extends from the front holder (3b) almost parallel to the plate, (7a) (7b)
are formed at both ends of the lens (2), and the projections (8a) (
8b).

Next, the operation of this embodiment will be explained. First, lens (2)
When enlarging the display on panel (1), the lens (2) is
a), and is fixed by engaging the protrusion (8a) in the groove (7a). Then, as shown by the broken line, the lens (2
) by an angle (α). Generally speaking, in a liquid crystal display panel, the angle at which the display can be seen best, that is, the optimal viewing angle indicated by the arrow (A), is 1° with respect to the normal to the panel surface.
Designed for 5 to 30 degrees.

Therefore, by adjusting the angle (α) of the lens (2) so that it is perpendicular to the direction shown by the arrow (A) and fixing it in that position, the display on the panel (11) can be easily read by the lens (2). In addition, when the lens (2) is used to illuminate the display on panel +11, the lens (2) is
The lens holder is fitted between the plate (5b) and the lens holding plate (6b), and is fixed by engaging the protrusion (8b) with i (7b). Then, as shown by the broken line, the lens (2) is moved at an angle (β
). By adjusting the angle (β) in accordance with the illumination angle of external light shown by the arrow (B) and the display area of the panel (1) that you want to illuminate, the external light will be focused on the desired display area and the display will be correct. Parts are illuminated much more brightly than other parts, making it easier to read them.

In addition, when the device (4) is not used, the lens (2)
As shown by the solid line in Figure 2, the display panel (
If you fold it parallel to 2), the device (4)
The overall size is compact and convenient to carry.

In addition, as shown in FIG. 2, it is preferable that the lens holding plates (6a) (6b) extend from the holder (3a) (3b) so that the lens holder is shorter than the plates (5a) (5b). Lens (2) holder (3a) (
3b) can be easily attached.

In this way, by enlarging the display and letting in light using one Fresnel lens, it becomes easier to read the liquid crystal display panel.

(C) Effects of the Invention According to this invention, the convex lens is installed at the edge of the liquid crystal display panel so that its angle can be adjusted in accordance with the viewing angle of the panel or the incident angle of external light. Display magnification and lighting are optimized, making the display easy to read. Furthermore, since a Fresnel lens is used as the convex lens installed, the external dimensions of the liquid crystal display device can be made compact.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the present invention, and FIG. 2 is a partial side view of FIG. 1. (11.--one liquid crystal display panel, (2)--convex lens, (3a)--one rear holder, (3b)--front holder. Fig. 1 Fig. 2

Claims (1)

[Claims] 1. A liquid crystal display panel, a rectangular convex lens made of a Fresnel lens and covering the panel, and a rectangular convex lens provided at a pair of opposing edges of the panel to removably support either end of the lens; A liquid crystal display device comprising: support means capable of setting and adjusting an angle between the panel and the lens.