JPH0425724Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a backlight mounted type liquid crystal display device (hereinafter referred to as LCD).

2. Description of the Related Art In an LCD, for example, a liquid crystal is sealed with upper and lower glass plates having transparent electrodes, and a polarizing plate is combined with the liquid crystal to display characters, images, etc. by electrical action. Using regular EL board as lighting
The configuration of the LCD will be explained using FIG. 2. In the figure, 1 is an upper polarizing plate, 2 is a lower polarizing plate, 3,
Reference numeral 4 indicates upper and lower glass plates provided for sealing the liquid crystal 5, and the upper and lower glass plates 3 and 4 have transparent electrodes 6 and 7, respectively. 8 and 9 are contact terminals made of conductive rubber, 10 is a printed circuit board, 11 is a fixture, 12 is an EL board, and in the space a provided between the lower polarizing plate 2 and the printed circuit board 10, double-sided tape or screws are attached. It is fixed using etc.

Problems to be Solved by the Invention When the LCD moves on the printed circuit board 10 during transportation or due to impact, etc.,
Since the EL board 12 is directly attached to the printed circuit board, the contact between the transparent electrodes 6, 7 and the contact terminals 8, 9 may become uncertain, or it may be difficult to replace the EL board 12 when its lifespan is over. There was a problem.

The present invention aims to provide an LCD that can solve the above problems by improving the structure of conventional LCDs.

Means for Solving the Problems In order to achieve the above objectives, the LCD of the present invention:
The liquid crystal is sealed by upper and lower glass plates with transparent electrodes, and behind it is an EL panel used for lighting.
The liquid crystal display device in which plates are arranged is characterized in that an EL plate storage space is formed in the lower glass.

Function The LCD with the above configuration forms an EL board storage space on the lower glass, and in order to fix the EL board, the LCD
It becomes possible to sufficiently illuminate the effective area.
In addition, the EL board can be securely fixed and can be easily attached and detached.

Embodiment FIG. 1 is a sectional view of an embodiment of the LCD according to the present invention. The LCD of this embodiment is basically the same as the conventional one described above, in which the liquid crystal 5 is connected to the upper glass plate 3.
The polarizing plate 2, which was conventionally placed under the lower glass plate 4, is sealed by the lower glass plate 4', and the lower glass plate 4' is made thicker, and the hole 4a is made to insert the polarizing plate. ’ is inserted. In addition, the lower glass plate 4' has a hole 4b' as an example of a storage space for inserting the EL plate 12, and a hole 4b' for inserting the polarizing plate 2.
It is provided parallel to a′, and like polarizing plate 2,
The plate 12 is inserted into the hole 4b'.

Note that the storage space for the EL plate 12 provided on the lower glass plate 4' is not limited to the above example.
It may be formed by a recessed portion of the plate 12 having a mounting recessed portion.

Effects of the invention Since the LCD of this invention has the above structure,
The EL plate, which acts as a backlight for the liquid crystal itself, illuminates the effective area of the LCD reliably, and even if the LCD is subjected to some vibration, the positional relationship between the EL plate and the liquid crystal remains the same.
does not change. In addition, it is easier to attach and detach the EL board,
There is no need to provide a dedicated fixing device.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a liquid crystal display device according to an embodiment of the present invention. FIG. 2 is a sectional view of a conventional liquid crystal display device. 1... Upper polarizing plate, 2... Lower polarizing plate, 3
...Upper glass plate, 4'...Lower glass plate,
4b'...EL board storage space (hole), 5...LCD,
6, 7... Transparent electrode, 8, 9... Contact terminal, 10
...Printed circuit board, 12...EL board.

Claims (1)

[Claims for Utility Model Registration] A liquid crystal is sealed by upper and lower glass plates having transparent electrodes, and the liquid crystal is used as lighting behind it.
What is claimed is: 1. A liquid crystal display device including an EL plate, characterized in that a storage space for the EL plate is formed in the lower glass.