JPH04238321A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To improve the power generation efficiency of the liquid crystal device and to reduce the thickness thereof. CONSTITUTION:This display device is constituted by crimping a liquid crystal (2) between a solar battery plate (3) which is directly formed on one glass plate (1b) and is provided with a reflection function to incident light and the other glass plate (1a) which is a front surface side to the above-mentioned incident light. The incident light directly enters the solar battery plate (3) after passing the glass plate (1a) on the front surface side and the liquid crystal (2) and, therefore, power generation efficiency is improved. Since the solar battery plate (3) is directly formed on the glass plate (1b), the thickness over the entire part of the liquid crystal display device after assembly is reduced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a liquid crystal display incorporating a solar cell.

0002

BACKGROUND ART FIG. 2 is a sectional view showing a conventional liquid crystal display, in which (1a) and (1b) are glass plates, (2)
is a liquid crystal sandwiched between these two glass plates, (3) is a solar cell plate that generates electricity by inputting light from the outside, and a solar cell plate (3) is placed on the back of the glass plate (1b) installed on the back of the liquid crystal (2). When attached, it generates electricity and also serves as a reflector that reflects light.

Next, the operation will be explained. That is, the crystal structure of the liquid crystal (2) sandwiched between the glass plates (1a) and (1b) changes by applying a predetermined voltage, and the light transmittance decreases. Therefore, the part where no voltage is applied and the crystal structure does not change remains transparent, so in this part the incident light from the outside goes from the glass plate (1a) to the liquid crystal (2).
→It passes through the glass plate (1b), is reflected by the solar cell plate (3), passes through the opposite route, and exits outside. Also, the parts where the crystal structure changes due to voltage application turn black and are recognized as letters or symbols, while the solar cell plate (3) changes from the glass plate (1a) to
Power is generated using the light that has passed through the liquid crystal (2) → glass plate (1b).

0004

[Problems to be Solved by the Invention] Conventional liquid crystal displays are constructed as described above, so in order for light to reach the solar cells, two glass plates (1a) and (1b) and a liquid crystal display (2) are required for light to reach the solar cells.
), which not only weakens the light and reduces power generation efficiency, but also increases the thickness of the entire liquid crystal display because solar cells are attached separately to the glass plate.

The present invention was made to solve the above-mentioned problems, and its object is to obtain a thinner liquid crystal display that has better power generation efficiency.

[0006]

[Means for Solving the Problems] A liquid crystal display device according to the present invention includes a solar cell plate that is directly formed on one glass plate and has a reflective function for incident light, and the other that is the front side for the incident light. The liquid crystal is sandwiched between the glass plate and the glass plate.

[0007]

[Function] In the liquid crystal display of this invention, the incident light passes through the glass plate and the liquid crystal on the front side to reach the solar cells, so the power generation efficiency is better than that of conventional ones. Since it is directly formed, it can be made thin.

[0008]

[Embodiment] An embodiment of the present invention will be described below. In other words, in Fig. 1, (1a) is one glass plate that faces the front side of the incident light, (2) is a liquid crystal polymerized on the back side of the glass plate, and (3) is a liquid crystal formed directly on the other glass plate (1b) to reflect light. This solar cell board (3) is a solar cell board with functions.
) and the front glass plate (1a), there is a liquid crystal (2) between the
is now being held.

[0009] In the above structure, the crystal structure of the liquid crystal (2) sandwiched between the glass plate (1a) and the solar cell plate (3) changes by applying a predetermined voltage, and the light transmittance decreases. Therefore, the part where no voltage is applied and the crystal structure does not change remains transparent, so the incident light from the outside passes through the glass plate (1a) → liquid crystal (2) and directly to the solar cell plate (3). ), it passes through the opposite route and exits to the outside. In addition, the parts where the crystal structure has changed due to voltage application turn black and are recognized as letters or symbols, while the solar cell plate (3)
generates electricity using the light that has passed through the glass plate (1a) and liquid crystal (2).

0010

[Effects of the Invention] Since the liquid crystal display of the present invention is constructed as described above, it has the advantage that power generation efficiency is good and the entire liquid crystal display can be made thin.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a liquid crystal display of the present invention.

FIG. 2 is a sectional view showing a conventional liquid crystal display.

[Explanation of symbols]

1a Glass plate 1b Glass plate 2　　　　　LCD ３　　　　　　　Solar cell board

Claims (1)

[Claims] Claim 1: A liquid crystal is sandwiched between a solar cell plate that is formed directly on one glass plate and has a reflective function for incident light, and the other glass plate that faces the incident light. A liquid crystal display featuring