KR20070066082A - LCD and mobile communication terminal having same - Google Patents

Abstract

A liquid crystal display device according to the present invention comprises a liquid crystal panel for displaying an image; A mold frame on which the liquid crystal panel is mounted; An impact absorbing material formed on the liquid crystal panel and the mold frame; It includes.

In addition, the mobile communication terminal according to the present invention comprises a liquid crystal panel for displaying an image, a mold frame on which the liquid crystal panel is seated, and a liquid crystal display device having a shock absorbing material formed on the liquid crystal panel and the mold frame; Communication means for performing communication with the outside; A control unit controlling image display of the communication means and the liquid crystal display device; It includes.

According to the present invention, it is possible to prevent the liquid crystal panel from being damaged from an external impact, and to effectively block external moisture or dust from affecting the liquid crystal panel.

Description

Liquid crystal display device and mobile communication terminal having same {Liquid crystal display device and mobile station having the same}

1 is a plan view schematically showing a conventional liquid crystal display device.

2 is a cross-sectional view taken along line AA ′ of FIG. 1.

3 is a side view schematically showing the liquid crystal panel shown in FIG.

4 is a photograph showing a state in which a crack origin is formed on a substrate of a general liquid crystal panel.

5 is a plan view schematically showing a liquid crystal display device according to the present invention;

6 is a cross-sectional view taken along line BB ′ of FIG. 5.

7 is a schematic view of a liquid crystal display according to another exemplary embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

11, 111 ... first polarizer 13, 113 ... first substrate

15, 115 ... second substrate 17, 117 ... second polarizer

19, 119 ... Drive IC 21, 121, 221 ... Mold frame

31, 131 ... Optical sheet 33, 133 ... Light guide plate

141, 241, 243 ... shock absorbers

The present invention relates to a liquid crystal display device and a mobile communication terminal having the same.

Among the screen display devices that display image information on the screen, the CRT (or CRT: Cathode Ray Tube) has been the most used so far, which is inconvenient to use because it is bulky and heavy compared to the display area.

Accordingly, a thin film type flat panel display device having a small display area that can be easily used in any place even though the display area is large has been developed, and is gradually replacing the CRT display device. In particular, the liquid crystal display device has superior display resolution than other flat panel display devices, and exhibits a fast response speed as compared with CRTs when a moving image is realized.

The driving principle of the liquid crystal display device is to use the optical anisotropy and polarization property of the liquid crystal. Since the liquid crystal is thin and long in structure, the direction of the molecular arrangement can be controlled by artificially applying an electric field to the liquid crystal molecules having directionality and polarization in the molecular arrangement. Therefore, if the alignment direction is arbitrarily adjusted, light may be transmitted or blocked according to the alignment direction of the liquid crystal molecules by optical anisotropy of the liquid crystal, thereby displaying colors and images.

Such liquid crystal display devices are applied to mobile communication terminals such as mobile phones, camera phones, and personal digital assistants (PDAs). The liquid crystal display device applied to a small device such as a mobile communication terminal forms a thinner thickness of the substrate constituting the liquid crystal panel in order to reduce the overall thickness and weight of the device. For example, the board | substrate which forms a liquid crystal panel may be formed in thickness of 0.3 mm-0.5 mm.

1 is a plan view schematically showing a conventional liquid crystal display, FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1, and FIG. 3 is a side view schematically showing the liquid crystal panel shown in FIG. 1. .

The conventional liquid crystal display device includes a liquid crystal panel having a first substrate 13 and a second substrate 15 and a mold frame 21. The first polarizing plate 11 is attached to the first substrate 13, and the second polarizing plate 17 is attached below the second substrate 15. The first substrate 13 may have a smaller size than that of the second substrate 15, and a driving IC 19 for driving the liquid crystal panel may be formed on the second substrate 15. The first polarizing plate 11 and the second polarizing plate 17 are formed in a similar size and smaller than the first and second substrates 13 and 15. The first polarizer 11 and the second polarizer 17 are larger than the image display area of the liquid crystal panel.

The first substrate 13, the second substrate 15, the optical sheet 31, and the light guide plate 33 are coupled to the mold frame 21. The light guide plate 33 and the optical sheet 31 receive light emitted from a light source, and provide the incident light to the liquid crystal panel.

In the liquid crystal display device having such a structure, the liquid crystal panel may be damaged due to the device being extremely thin and light in weight due to the handling of the device, mechanical distortion, impact, and the like. Arrows shown in FIG. 1 indicate that an impact is applied to the liquid crystal display from the outside. This external shock is applied to the mold frame 21, the applied shock is not completely absorbed in the mold frame 21. Therefore, the shock not absorbed in the mold frame 21 is propagated to the liquid crystal panel.

In addition, the external impact applied to the image display area in the upper direction of the liquid crystal panel directly affects the liquid crystal panel without passing through the mold frame 21. As described above, the liquid crystal panel may be damaged by an external impact applied from the upper side of the front surface of the first substrate 13.

Meanwhile, the liquid crystal panel is separated from the mother substrate through a scribing process and a breaking process in the manufacturing process. At this time, as shown in FIG. 4, while the physical scribing process and the breaking process are performed, a fine crack origin is generated on the substrate. 4 is a photograph showing a state in which a crack origin is formed on a substrate of a conventional liquid crystal panel.

Such a fine crack origin (crack origin) can act as a starting point that begins to break when the distortion, impact, etc. are applied to the liquid crystal panel. Accordingly, liquid crystal displays applied to thin, lightweight, and small devices are required to have more impact resistance.

The present invention provides a liquid crystal display device and a mobile communication terminal having the same that can protect the liquid crystal panel from an external impact.

A liquid crystal display device according to the present invention comprises a liquid crystal panel for displaying an image; A mold frame on which the liquid crystal panel is mounted; An impact absorbing material formed on the liquid crystal panel and the mold frame; It includes.

In addition, the mobile communication terminal according to the present invention comprises a liquid crystal panel for displaying an image, a mold frame on which the liquid crystal panel is seated, and a liquid crystal display device having a shock absorbing material formed on the liquid crystal panel and the mold frame; Communication means for performing communication with the outside; A control unit controlling image display of the communication means and the liquid crystal display device; It includes.

According to the present invention, it is possible to prevent the liquid crystal panel from being damaged from an external impact, and to effectively block external moisture or dust from affecting the liquid crystal panel.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is a plan view schematically illustrating a liquid crystal display according to the present invention, and FIG. 6 is a cross-sectional view taken along line BB ′ of FIG. 5.

As shown in FIGS. 5 and 6, the liquid crystal display according to the present invention includes a liquid crystal panel including a first substrate 113 and a second substrate 115, a mold frame 121, and an impact absorbing material 141. Include. The liquid crystal layer is formed between the first substrate 113 and the second substrate 115. A first polarizer 111 is formed on the first substrate 113, and a second polarizer 117 is formed below the second substrate 115.

The liquid crystal panel is mounted on the mold frame 121, and the shock absorber 141 is formed on the liquid crystal panel and the mold frame 121. In addition, the shock absorber 141 may be formed between the liquid crystal panel and the mold frame 121. The shock absorber 141 may be formed between the first polarizing plate 111 and the mold frame 121 formed on the outer surface of the first substrate 113, and the outer surface of the second substrate 115. It may be formed between the second polarizing plate 117 and the mold frame 121 formed in.

The first substrate 113 may be smaller than the second substrate 115, and a driving IC 119 for driving the liquid crystal panel may be formed on the second substrate 115. The second substrate 115 may be a thin film transistor substrate having a gate wiring, a data wiring, and a thin film transistor array, and the first substrate 113 may be a color filter substrate having a color filter.

The shock absorber 141 may be formed of a flexible synthetic resin. The shock absorber 141 may be formed of a material such as silicon, EVA (Ethylene-Vinyl Acetate copolymer), or polyurethane.

The optical sheet 131 and the light guide plate 133 are coupled to the mold frame 121. The light guide plate 133 and the optical sheet 131 receive light emitted from a light source, and provide the incident light to the liquid crystal panel.

In the liquid crystal display having the above structure, the shock absorbing material 141 is molded on the liquid crystal panel and the mold frame 121. Accordingly, the external shock applied to the image display area in the upper direction of the liquid crystal panel may be absorbed by the shock absorber 141. Accordingly, the shock applied from the outside can be prevented from propagating to the liquid crystal panel, thereby preventing the liquid crystal panel from being damaged from the external shock. The shock absorber 141 may perform functions such as waterproofing, heat insulation, and surface scratch prevention.

According to the present invention, a fine crack origin generated on the first substrate 113 and the second substrate 115 while a physical scribing process and a breaking process are performed during liquid crystal panel manufacture. (crack origin) can be prevented from being directly exposed to external impacts. Accordingly, damage to the liquid crystal panel due to external impact can be reduced.

The shock absorber 141 may be formed to have a transparent color. As an example, it may be implemented by adding a suitable pigment to the shock absorber 141. As such, the impact absorbing material 141 is formed to have a transparent color, so that a specific color may be reflected when an image is displayed on the LCD.

In addition, the shock absorber 141 may be formed in a lens shape. The lens shape may be formed as a concave lens shape or a convex lens shape. Accordingly, the image displayed on the liquid crystal panel may be implemented to be diffused or focused according to a distance.

In addition, according to the present invention, it is possible to implement so that the shock absorbing material is formed in the outer edge portion of the first substrate 113 and the second substrate 115. The shock absorber absorbs the shock applied from the outside, and effectively prevents external moisture or dust from affecting the liquid crystal panel. The shock absorber can prevent dust and moisture introduced from the outside from affecting the liquid crystal panel. The shock absorber can also prevent dust and moisture introduced from the outside affecting the optical sheet 131 and the light guide plate 133.

Meanwhile, the liquid crystal display according to the present invention may be formed to display an image in both directions of a front direction and a rear direction. In this case, as illustrated in FIG. 7, both the shock absorbing materials 241 and 243 may be formed on the front and rear surfaces of the liquid crystal panel. 7 is a schematic view of a liquid crystal display according to another exemplary embodiment of the present invention. In FIG. 7, reference numeral 221 denotes a mold frame.

In FIG. 7, the liquid crystal panel, the light guide plate, and the like seated in the mold frame 221 are not illustrated in detail, but the configuration may be variously modified. Since much of this is already known, a detailed description thereof will be omitted here. For example, two liquid crystal panels may be formed inside the mold frame 221 to display images in both directions, and only one liquid crystal panel may be formed to display images in both directions.

The liquid crystal display device can be applied to a mobile communication terminal such as a mobile phone, a camera phone, a personal digital assistant (PDA). The mobile communication terminal includes a liquid crystal display as described above, communication means for performing communication with the outside, and a control unit for controlling image display of the communication means and the liquid crystal display. Each component and function constituting the mobile communication terminal are already well known, so a detailed description thereof will be omitted.

According to the liquid crystal display device and a mobile communication terminal having the same according to the present invention as described above, it is possible to prevent the liquid crystal panel from being damaged from an external impact and to effectively block external moisture or dust from affecting the liquid crystal panel. There are advantages to it.

Claims (11)

A liquid crystal panel displaying an image; A mold frame on which the liquid crystal panel is mounted; An impact absorbing material formed on the liquid crystal panel and the mold frame; Liquid crystal display comprising a. The method of claim 1, The liquid crystal panel is a liquid crystal display device for displaying an image in both the front direction and the rear direction. The method of claim 2, The shock absorber is formed on both the front and rear of the liquid crystal panel. The method of claim 1, The shock absorber is a flexible synthetic resin. The method of claim 1, The shock absorbing material is a liquid crystal display device formed by selecting from a material comprising silicon, EVA (Ethylene-Vinyl Acetate copolymer), polyurethane. The method of claim 1, The shock absorbing material is a liquid crystal display device formed to have a transparent color. The method of claim 1, The shock absorbing material is a liquid crystal display device formed by the addition of a pigment. The method of claim 1, The shock absorbing material has a lens shape. The method of claim 8, And the lens shape is a concave lens shape or a convex lens shape. The method of claim 1, The shock absorber is further formed between the liquid crystal panel and the mold frame. A liquid crystal display device according to any one of claims 1 to 10; Communication means for performing communication with the outside; A control unit controlling image display of the communication means and the liquid crystal display device; Mobile communication terminal comprising a.

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