JPH0581825U - Liquid crystal display - Google Patents

Abstract

(57) [Summary] [Purpose] A thin display can be achieved and a good display state is maintained. [Structure] The transmissive filter 11 is fixed to the liquid crystal display side 2a of the liquid crystal display body 2 with an adhesive 12 which does not require much thickness for joining to achieve a thin structure, and is further formed between the transmissive filter 11 and the liquid crystal display body 2. Air passage that connects the gap G to the outside and the outside
By forming 14 on the coated portion of the adhesive 12, the change of the air pressure in the gap G due to the temperature change is eliminated and a good display state is maintained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid crystal display device applied to a display unit such as a personal computer and a word processor.

[0002]

[Prior Art]

 In conventional liquid crystal display devices, glass is generally attached to the display surface side of the liquid crystal display body that consists of the liquid crystal and the liquid crystal drive, but if the liquid crystal display body is damaged due to external force, A transmission filter is installed as a protective material on the back side (opening side (glass side) of the liquid crystal display body) of the outer case that houses the liquid crystal display body so that the light will not scatter.

The transmission filter is press-contacted with a foam material or fixed with an adhesive so that dust and the like do not enter the display side of the liquid crystal display.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, in the method of pressing the transmission filter to the liquid crystal display body through the foam material, a space corresponding to the width of the foam material is required between the liquid crystal display body and the transmission filter, which hinders thinning of the device. There is a problem.

Further, in the method of fixing the transmission filter to the liquid crystal display with an adhesive, the pressure change due to the temperature change of the operating environment in the sealed air layer existing between the liquid crystal display and the transmission filter. This causes a problem that the liquid crystal display surface and the transmission filter come into contact with each other to easily generate interference fringes, which makes it difficult to view the display screen.

An object of the present invention is to provide a liquid crystal display device which can be thinned and can maintain a good display state.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a liquid crystal display body, a liquid crystal display body housing case having an opening substantially the same as the display range of the liquid crystal display body, a display side of the liquid crystal display body, and the liquid crystal display body. In a liquid crystal display device provided with a transmission filter interposed between the opening side rear surface of the storage case, the transmission filter and the liquid crystal display body are fixed with an adhesive, and further air is applied to the adhesive application portion. It is characterized by forming a passage.

Further, it is characterized in that an inclination is formed in at least a part of the air passage.

[0009]

[Action]

 According to the above means, since the transmission filter and the liquid crystal display are bonded by the adhesive, the gap between them is small and the thickness can be reduced, and further, the air passage formed in the application portion of the adhesive causes Since the space communicates with the outside, the air pressure in the space is constant, and the change of the air pressure prevents the transmission filter from affecting the display surface of the liquid crystal display body, so that a good display state can be maintained.

Further, the adhesive on the side wall of the air passage can adsorb dust or the like entering from the outside, and the presence of the inclined portion widens the adsorption area, so that the amount of dust or the like adsorbed increases. It is possible to maintain a good display state by eliminating dust and the like from adhering to the surface.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a front view showing an example of a word processor in which the liquid crystal display device according to the present invention is used. Reference numeral 1 is a liquid crystal display device, and as will be described later, a liquid crystal display body 2 and this liquid crystal display body. It is composed of an upper case 3 which is a liquid crystal display housing case which houses 2. Reference numeral 4 is a lower case having an operator board section 5, and the upper case 3 and the lower case 4 are rotatably connected by a hinge section 6.

FIG. 1 is a cross-sectional view of the liquid crystal display device 1 of FIG. 2 according to an embodiment of the present invention. The upper case 3 has a rear cover 8 for holding a liquid crystal display body 2 having a known structure, It comprises a front cover 10 having an opening 9 substantially the same as the display range of the liquid crystal display body 2, and a transmission filter 11 is provided between the display side 2a of the liquid crystal display body 2 and the rear surface of the front cover 10 on the opening 9 side. Are intervening. The outer peripheral portion of the transmission filter 11 and the display side 2a of the liquid crystal display body 2 are bonded with an adhesive 12. Reference numeral 13 is a glass plate on the liquid crystal display surface.

FIG. 3 is a rear view of the transmission filter 11 described above. The adhesive 12 is applied to the outer periphery of the transmission filter 11 outside the display range S of the liquid crystal display body 2, and a part of the application portion is further applied. The adhesive 12 is not applied to the air passages 14 (in the figure, four locations are shown).

In the above-described embodiment, since the transmission filter 11 and the liquid crystal display body 2 are fixed by the adhesive 12, only the minimum required distance exists between the transmission filter 11 and the liquid crystal display body 2, and the thin type is used. Can be promoted.

In addition, the gap G existing between the transmission filter 11 and the liquid crystal display body 2 is communicated with the outside through the air passage 14, so that the change in the air pressure due to the temperature change of the use environment is eliminated and the transmission filter 11 and It is possible to prevent contact with the liquid crystal display surface and maintain a good display state.

Further, since the side wall portion of the air passage 14 is the adhesive 12, when dust or the like is attempting to enter the gap G from the outside, the dust and the like are absorbed by the adhesive force of the adhesive 12 so as to enter the gap G. It is possible to prevent the deterioration of the display state due to the adhesion of dust or the like to the liquid crystal display surface.

As shown in FIGS. 4 (a) to 4 (c), the shape of the air passage 14 may be an inclined air passage 24 (FIG. 4 (a)), or an inclined portion may be formed only on one side. By making the air passage 34 with 34a formed (Fig. 4 (b)) or the air passage 44 formed with inclined portions 44a, 44b on both sides (Fig. 4 (c)), the adhesive area can be increased. It is possible to increase the adsorption amount of dust and the like.

[0019]

[Effect of the device]

 As described above, according to the present invention, the transmission filter and the liquid crystal display are fixed to each other by the adhesive that does not require a large thickness for joining, so that the transmission filter and the liquid crystal display can be thinned, and the transmission passage and the transmission filter can be formed by the air passage. Since the gap with the liquid crystal display communicates with the outside, the air pressure in the gap becomes constant, the state of the liquid crystal display surface becomes stable, and the air passage and the adhesive of the inclined portion try to enter the gap. It is possible to provide a liquid crystal display device capable of adsorbing dusts and the like that can be prevented from entering and preventing dusts and the like from adhering to the liquid crystal display surface, which can be made thinner and which can maintain a good display state.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of a liquid crystal display device of the present invention.

FIG. 2 is a front view showing an example of a word processor.

FIG. 3 is a rear view of the transmission filter of FIG.

FIG. 4 is an explanatory diagram of a shape of an air passage.

[Explanation of symbols]

1 ... Liquid crystal display device, 2 ... Liquid crystal display body, 3 ... Upper case (liquid crystal display body storage case), 11 ... Transmission filter, 12
… Adhesives, 14, 24, 34, 44… Air passages.

Claims (2)

[Scope of utility model registration request] 1. A liquid crystal display body, a liquid crystal display body storage case having an opening substantially equal to a display range of the liquid crystal display body, a display side of the liquid crystal display body, and an opening side rear surface of the liquid crystal display body storage case. In a liquid crystal display device having a transmission filter interposed therebetween, the transmission filter and the liquid crystal display body are fixed by using an adhesive, and an air passage is formed in an application portion of the adhesive. Liquid crystal display device. 2. The liquid crystal display device according to claim 1, wherein at least a part of the air passage is formed with an inclination.