JPH0933921A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the device thin, to resolve the infiltration problem of dust, etc., to reduce the cost and to improve reliability by integrally forming a liquid crystal display part with an electroluminescence part. SOLUTION: A liquid crystal displaying transparent electrode 1a applying a voltage to a liquid crystal 3 is formed on the surface side of a lower side glass plate 1. The lower side glass plate 1 is joined with an upper side glass plate 2 by a seal material 4, and the liquid crystal 3 is injected into a gap between the lower side glass plate 1 and the upper side glass plate 2. Further, a polarizing plate 15 is provided on the surface of the upper side glass plate 12. A light emitting transparent electrode 1b applying the voltage to a light emitting layer 9 is formed on the rear surface side of the lower side glass plate 1, and the light emitting layer 9 is provided on the light emitting transparent electrode 1b. A reflection sheet 6 for reflecting light is provided so as to cover the outside of the light emitting layer 9.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a liquid crystal display,
In particular, the present invention relates to a backlight type liquid crystal display device that illuminates a liquid crystal display surface from the back side.

[0002]

2. Description of the Related Art A conventional liquid crystal display device of this type uses a liquid crystal display panel 10 and an electroluminescence panel 20 which are separately manufactured as shown in FIG. The electroluminescent panel 20 is attached by an adhesive material 30.

The liquid crystal display panel 10 is composed of a lower glass plate 11, an upper glass plate 12, a liquid crystal 13, a sealant 14, a polarizing plate 15 and a reflection sheet 16. A transparent electrode for applying a voltage to the liquid crystal 13 is formed on the lower glass plate 11, and the lower glass plate 1
A liquid crystal 13 is injected between 1 and the upper glass plate 12 and sealed with a sealant 14. Further, in order to display liquid crystal, a polarizing plate 15 is provided on the surface of the upper glass plate 12, and a reflection sheet 16 is provided on the back side of the lower glass plate 11.
Is provided.

Further, the electroluminescence panel 20
Is a moisture-proof film 21, 22 having a transparent electrode formed thereon.
A light emitting layer 23 is provided between the liquid crystal display panel 10 and the transparent electrode.

[0005]

However, since the above-mentioned conventional liquid crystal display has a structure in which the electroluminescence panel is attached to the back surface of the liquid crystal display panel,
The dimension becomes thick. Further, when mounting, if dust or the like enters between the liquid crystal display panel and the electroluminescence panel, there is a problem that a shadow of dust or the like appears when the electroluminescence panel emits light. .

It is an object of the present invention to provide a liquid crystal display which can realize a thin structure and can solve the problem of dust intrusion by integrating the liquid crystal display panel part and the electroluminescence panel part. .

[0007]

The liquid crystal display of the present invention comprises:
A first glass plate having a transparent electrode for liquid crystal display formed on one surface side of the glass plate and a transparent electrode for light emission on the other surface side, and the transparent electrode for liquid crystal display of the first glass plate A second glass plate disposed with a gap above the
A liquid crystal injected into the gap, a light emitting layer arranged on the light emitting transparent electrode of the first glass plate, and a reflection sheet provided to cover the outside of the light emitting layer and reflecting light. Equipped with.

In the liquid crystal display of the present invention, a transparent electrode for liquid crystal display is formed on one surface side of the first glass plate, and a transparent electrode for light emission is formed on the other surface side of the first glass plate. A sealing agent for sealing liquid crystal is applied to one surface side of the first glass plate and a light emitting layer is applied to the other surface side of the first glass plate, and a gap is provided above the one surface side of the first glass plate with the sealing agent interposed. Then, the second glass plate is joined, liquid crystal is injected into the gap, and a reflection sheet is attached so as to cover the outside of the light emitting layer.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the present invention, in which a lower glass plate 1, an upper glass plate 2 and a liquid crystal 3 are provided.
The sealing agent 4, the polarizing plate 5, the reflection sheet 6, and the light emitting layer 7 are laminated.

Here, a transparent electrode 1a for liquid crystal display for applying a voltage to the liquid crystal 3 is formed on the surface side of the lower glass plate 1, and the lower glass plate 1 and the upper glass plate 2 are separated from each other. It is joined by the sealant 4. Liquid crystal 3 is injected into the gap between the lower glass plate 1 and the upper glass plate 2. A polarizing plate 15 is provided on the surface of the upper glass plate 12.

A transparent electrode 1b for light emission for applying a voltage to the light emitting layer 9 is formed on the back surface side of the lower glass plate 1, and the light emitting layer 9 is further provided. Further, a reflection sheet 6 that reflects light is provided so as to cover the outside of the light emitting layer 9. Therefore, when a voltage is applied to the transparent electrode 1b of the lower glass plate 1, the light emitting layer 9 emits light, and the liquid crystal display surface including the light reflected by the reflection sheet 6 can be illuminated from the back surface.

FIG. 2 is a diagram showing an example of a manufacturing process of the liquid crystal display device of the present invention.

First, a transparent electrode 1a for liquid crystal display is formed on the surface side of the lower glass plate 1, and at the same time, the lower glass plate 1 is formed.
Patterning and etching processing for forming the transparent electrode 1b for light emission are performed on the back surface side of (step 101).

After that, a printing process is carried out in which the sealing agent 4 for sealing the liquid crystal is applied to the front surface side of the lower glass plate 1, and at the same time, the light emitting layer 7 is applied to the rear surface side of the lower glass plate 1 ( Step 102).

Next, the lower glass plate 1 and the upper glass plate 2 are thermocompression-bonded with a sealant 4 therebetween and bonded with a gap (step 103), and then the lower glass plate 1 and the upper glass plate are joined. The liquid crystal 3 is injected into the gap between the two (step 104).

Then, a polarizing plate 5 is formed on the surface of the upper glass plate 2.
Is attached, and at the same time, the reflection sheet 6 is attached so as to cover the outside of the light emitting layer 7 (step 105). By doing so, the liquid crystal display panel portion and the electroluminescence panel portion can be integrally manufactured.

[0018]

As described above, according to the present invention, the transparent electrode for light emission is formed on the back surface side of the lower glass plate on which the transparent electrode for liquid crystal display is formed to provide the light emitting layer. ,
By providing the reflection sheet so as to cover the outer side of the light emitting layer, the liquid crystal display panel and the electroluminescence panel, which are conventionally separately manufactured, can be integrally manufactured, and thus thinning can be realized and dust and the like can be realized. Intrusion problems can also be solved. Furthermore, since the manufacturing and assembling process is simplified, cost reduction and reliability improvement can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a manufacturing process of a liquid crystal display device of the present invention.

FIG. 3 is a sectional view showing an example of a conventional liquid crystal display.

[Explanation of symbols]

 1 Lower Glass Plate 2 Upper Glass Plate 3 Liquid Crystal 4 Sealing Material 5 Polarizing Plate 6 Reflective Sheet 7 Light Emitting Layer 1a Transparent Electrode for Liquid Crystal Display 1b Transparent Electrode for Light Emission 101-105 Steps Showing Manufacturing Process

Claims (2)

[Claims] 1. A first glass plate having a transparent electrode for liquid crystal display formed on one surface side of the glass plate and a transparent electrode for light emission formed on the other surface side thereof; Secondly arranged with a gap above the transparent electrode for liquid crystal display
The glass plate, the liquid crystal injected into the gap, and the first
2. A liquid crystal display, comprising: a light emitting layer disposed on the light emitting transparent electrode of the glass plate; and a reflection sheet that is provided so as to cover the outside of the light emitting layer and reflects light. 2. A liquid crystal display transparent electrode is formed on one surface side of the first glass plate and a light emitting transparent electrode is formed on the other surface side, and the one surface side of the first glass plate is formed. A sealing agent for sealing liquid crystal is applied and a light emitting layer is applied to the other surface side of the first glass plate, and a second glass is formed above the one surface side of the first glass plate with a gap interposed therebetween. A liquid crystal display, characterized in that a plate is joined, liquid crystal is injected into the gap, and a reflection sheet is attached so as to cover the outside of the light emitting layer.