KR20170024801A - Double surface liquid crystal display module and double surface liquid crystal display apparatus using the same - Google Patents

Double surface liquid crystal display module and double surface liquid crystal display apparatus using the same Download PDF

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Publication number
KR20170024801A
KR20170024801A KR1020150120287A KR20150120287A KR20170024801A KR 20170024801 A KR20170024801 A KR 20170024801A KR 1020150120287 A KR1020150120287 A KR 1020150120287A KR 20150120287 A KR20150120287 A KR 20150120287A KR 20170024801 A KR20170024801 A KR 20170024801A
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KR
South Korea
Prior art keywords
liquid crystal
circuit board
printed circuit
crystal display
panel
Prior art date
Application number
KR1020150120287A
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Korean (ko)
Inventor
오근택
Original Assignee
엘지디스플레이 주식회사
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Priority to KR1020150120287A priority Critical patent/KR20170024801A/en
Publication of KR20170024801A publication Critical patent/KR20170024801A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

An object of the present invention is to provide a double-surface liquid crystal display module in which a first display portion and a second display portion are coupled to each other with a single light guide panel interposed therebetween while facing different directions and are driven by a single printed circuit board, and a double-surface liquid crystal display apparatus using the same. To this end, the double-surface liquid crystal display module according to the present invention includes a first display portion, a second display portion, a light source portion, a light guide plate, and a printed circuit board. The first display portion outputs an image in a first direction. The second display portion outputs an image in a second direction opposite to the first direction. The light source portion emits light. The light guide plate is disposed between the first display portion and the second display portion and transmits the light emitted from the light source portion to the first display portion and the second display portion. The printed circuit board is provided with driving circuits for driving the first display portion and the second display portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a double-sided liquid crystal display (LCD) module and a double-

The present invention relates to a two-sided liquid crystal display module and a two-sided liquid crystal display using the same.

Display devices (FPD: Flat Panel Display) are used in various kinds of electronic products including mobile phones, tablet PCs, and notebooks. The display device includes a liquid crystal display (LCD) and an organic light emitting display (OLED).

Of the display devices, the liquid crystal display device has the advantages of mass production technology, ease of driving means, realization of high image quality, and is now most widely commercialized.

In recent years, a double-sided liquid crystal display device has been developed which allows moving images to be viewed from both sides.

1 is a perspective view of a conventional two-sided liquid crystal display device.

Referring to FIG. 1, a conventional two-sided liquid crystal display includes a first body 10, a second body 20, and a support 30.

The first body 10 is installed on one side of the support part 30 and outputs an image. Although not shown, the first body 10 may include a liquid crystal panel, a guide panel, a light guide plate, and an optical sheet portion.

The second body 20 is installed on the other side of the support part 30 at a predetermined distance from the first body 10. The second body 20 may be configured in the same manner as the first body 10. Here, the rear surface of the second body 20 may be installed on the support portion 30 so as to face the rear surface of the first body 10.

The support portion 30 is installed between the first body 10 and the second body 20 to support the first body 10 and the second body 20, respectively. The support portion 30 can support the rear surface of the first main body 10 and the rear surface of the second main body 20. [ In the conventional two-sided liquid crystal display device 1, since the first body 10 and the second body 20 are spaced apart from each other by a predetermined distance on the support part 30, have.

In the two-sided liquid crystal display device according to the related art, the first body 10 and the second body 20 are manufactured. Then, the first body 10 and the second body 20, Should be installed in the support portion 30, respectively. Accordingly, the manufacturing process for manufacturing and coupling the first main body 10, the second main body 20, and the support portions 30 becomes complicated. Therefore, the manufacturing cost of the conventional double-sided liquid crystal display device .

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a double-sided liquid crystal display module and a double-sided liquid crystal display device using the same, in which a plurality of liquid crystal panels are installed in different directions with one light guide plate interposed therebetween. .

According to an aspect of the present invention, there is provided a two-sided liquid crystal display module including a first display unit, a second display unit, a light source, a light guide plate, and a printed circuit board. The first display unit outputs an image in a first direction. And the second display unit outputs an image in a second direction opposite to the first direction. The light source unit irradiates light. The light guide plate is disposed between the first display unit and the second display unit and transmits the light emitted from the light source unit to the first display unit and the second display unit. And driving circuits for driving the first display unit and the second display unit are disposed on the printed circuit board.

According to an aspect of the present invention, there is provided a double-sided liquid crystal display (LCD) device including the double-sided liquid crystal display module, a first front cover, a second front cover, and a main printed circuit board. The first front cover covers the sides of the double-sided liquid crystal display module in a first direction of the double-sided liquid crystal display module. The second front cover covers the sides of the double-sided liquid crystal display module in a second direction opposite to the first direction. The main printed circuit board drives the double-sided liquid crystal display module.

According to the present invention, the thickness of the double-side liquid crystal display can be reduced as the first display portion and the second display portion are coupled to each other with one light guide plate interposed therebetween so as to be directed in different directions and driven by one printed circuit board .

1 is a perspective view of a conventional two-sided liquid crystal display device.
2 is a perspective view of a double-side liquid crystal display device according to the present invention.
3 is an exploded perspective view of a double-side liquid crystal display device according to the present invention.
4 is an enlarged view of a connection portion applied to a double-sided liquid crystal display module according to the present invention.
5 is an exemplary view showing a section cut along the line A-A 'shown in FIG. 4;
6 is an exemplary view showing a section cut along the line B-B 'shown in FIG. 4;

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

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. To fully disclose the scope of the invention to a person skilled in the art, and the invention is only defined by the scope of the claims.

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In the case where the word 'includes', 'having', 'done', etc. are used in this specification, other parts can be added unless '~ only' is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if the temporal relationship is described by 'after', 'after', 'after', 'before', etc., May not be continuous unless they are not used.

The term " at least one " should be understood to include all possible combinations from one or more related items. For example, the meaning of 'at least one of the first item, the second item and the third item' means not only the first item, the second item or the third item, but also the second item, the second item and the third item, Means any combination of items that can be presented from more than one.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

FIG. 2 is a perspective view of a double-side liquid crystal display device according to the present invention, FIG. 3 is an exploded perspective view of a double-side liquid crystal display module according to the present invention, and FIG. 4 is an enlarged view of a connection part applied to the double- .

2, the double-sided liquid crystal display device according to the present invention includes a first front cover 110, a second front cover 120, a main printed circuit board 130, and a double-sided liquid crystal display module 200 do. The two-sided liquid crystal display module 200 includes a first display portion 210, a second display portion 220, a light source portion 230, a light guide plate 240, and a printed circuit board 250.

The first front cover 110 covers the sides of the double-sided liquid crystal display module 200 in a first direction of the double-sided liquid crystal display module 200. For example, the first front cover 110 may cover the sides of the first display unit 210 in the first direction. The first front cover 110 may cover the outer edges of the front surface of the first display unit 210 in the first direction. The first front cover 110 may be fastened to the second front cover 120 with the double-sided liquid crystal display module 200 interposed therebetween.

The second front cover 110 covers the sides of the two-sided liquid crystal display module 200 in a second direction of the two-sided liquid crystal display module 200. For example, the second front cover 120 may cover the sides of the second display unit 220 in the second direction. The second front cover 120 may cover the outer edges of the front surface of the second display unit 220 in the second direction. The second front cover 120 may be fastened to the first front cover 110 with the double-sided liquid crystal display module 200 interposed therebetween.

Here, the first direction refers to a direction in which the first panel 214 constituting the first display unit 210 is exposed by the first front cover 110. In addition, the second direction means a direction opposite to the first direction. That is, the second direction indicates a direction in which the second panel 224 constituting the second display unit 220 is exposed by the second front cover 120.

The main printed circuit board 130 drives the double-sided liquid crystal display module 200. The main printed circuit board 130 drives the first display unit 210 and the second display unit 220 by transmitting a signal transmitted from a device such as a broadcasting device or a computer to the printed circuit board 250 . The main printed circuit board 130 may be installed at a lower end of the printed circuit board 250.

The two-sided liquid crystal display module 200 may output an image in the first direction and the second direction. The first front cover 110 is provided on a side surface of the double-side liquid crystal display module 200 in the first direction.

The second front cover 120 is provided on a side surface of the double-side liquid crystal display module 200 in a second direction. The double-sided liquid crystal display module 200 includes the first display unit 210, the second display unit 220, the light source unit 230, the light guide plate 240, and the printed circuit board 250.

The first display unit 210 outputs an image in the first direction. The first display unit 210 is disposed on a plane of any one of the two planes of the light guide plate 240 (the plane corresponding to the first direction).

The first display unit 210 may be driven by driving circuits of the printed circuit board 250. The first display unit 210 may be positioned in the first direction with respect to the light guide plate 240.

The first display unit 210 may include a first optical unit 211, a first guide panel 212, a first adhesive member 213, a first panel 214, and a first connection unit 215 .

As shown in FIG. 3, the first optical unit 211 is disposed on one of two surfaces of the light guide plate 240 in the first direction. The first optical unit 211 functions to diffuse the light that has passed through the light guide plate 240 or to cause the light that has passed through the light guide plate 240 to enter the first panel 214 in a direction perpendicular thereto. For this, the first optical unit 211 may include a diffusion sheet for diffusing light, a prism sheet for converting light vertically to the first panel 214, and the like.

The first guide panel 212 is formed in a square frame shape so as to be disposed in a non-display area of the first panel 214.

The first guide panel 212 may be formed in various shapes depending on the shape of the first panel 214. The first adhesive member 213 is attached to a top surface of the first guide panel 212 on which the non-display area of the first panel 214 is disposed. The first guide panel 212 functions to guide the light source unit 230 and the light guide plate 240.

The first adhesive member 213 is attached to the outer surface of the first panel 214, that is, the lower end surface of the non-display area of the first panel 214 and the upper surface of the first guide panel 212 do.

The first adhesive member 213 may be formed in the shape of a rectangular frame, as shown in FIG. The first adhesive member 213 may be formed in various shapes depending on the shape of the first panel 214. The first adhesive member 213 prevents light transmitted from the light source unit 230 from flowing out between the first guide panel 212 and the first panel 214. The first adhesive member 213 may prevent light from leaking through the bezel.

5), and a liquid crystal (not shown) that is injected between the upper substrate 214a and the lower substrate 214b. The first substrate 214 includes a first substrate 214a, a second substrate 214b, And outputs an image by controlling the amount of light emitted from the light source unit 230.

Here, polarizing films 214c and 214d may be attached to the upper substrate 214a and the lower substrate 214b. The first panel 214 may be attached to the first guide panel 212 by the first adhesive member 213.

A panel protector (not shown) may be formed on a side surface of the first panel 214 to protect the side surface. The panel protector may be formed of a silicone-based or ultraviolet (UV) curing sealant (or resin).

A data driver IC for supplying a data voltage to the data lines of the first panel 214 may be disposed in the first connection part 215. In this case, the first display unit 210 may be connected to the printed circuit board 250 through at least one of the first connection units 215 to receive signals from the driving circuits.

Although not shown, data pad electrodes connected to the data lines arranged in the active area are disposed in the pad part of the non-display area of the first panel 214. [ The first connection part 215 is electrically connected to the data pad electrodes.

In addition to the data lines, gate pads connected to the gate lines disposed in the active region may be disposed in the pad portion. In this case, the first connection part 215 may be electrically connected to the gate pad electrodes.

In addition, power pad electrodes connected to various power lines arranged in the first panel 214 may be disposed in the pad portion. In this case, the first connection unit 215 may be electrically connected to the power pad electrodes. The pad electrodes and the first connection part 215 may be electrically connected by an anisotropic conductive film (ACF). The first connection part 215 may be made of a flexible material such as polyimide (PI).

The second display unit 220 outputs an image in the second direction. The second display unit 220 is disposed on the other one of the two planes of the light guide plate 240 (the plane corresponding to the second direction).

The second display unit 220 may be driven by driving circuits of the printed circuit board 250. The second display unit 220 may be positioned in the second direction with respect to the light guide plate 240.

The second display unit 220 may include a second optical unit 221, a second guide panel 222, a second adhesive member 223, a second panel 224, and a second connection unit 225 .

3, the second optical portion 221 is disposed on one of two surfaces of the light guide plate 240 in the second direction. The second optical unit 221 functions to diffuse the light that has passed through the light guide plate 240 or to cause light that has passed through the light guide plate 240 to be incident on the second panel 224 in a vertical direction. For this, the second optical unit 221 may include a diffusion sheet for diffusing light, a prism sheet for converting light vertically to the second panel 224, and the like.

The second guide panel 222 is formed in the shape of a rectangular frame so as to be disposed in the non-display area of the second panel 224. The second guide panel 222 may be formed in various shapes according to the shape of the second panel 224.

The second adhesive member 223 is attached to a top surface of the second guide panel 222 on which the non-display area of the second panel 224 is disposed. The second guide panel 222 functions to guide the light source unit 230 and the light guide plate 240.

The second adhesive member 223 is attached to the outer surface of the second panel 224, that is, the lower end surface of the non-display area of the second panel 224 and the upper surface of the second guide panel 222 do.

The second adhesive member 223 may be formed in the shape of a rectangular frame, as shown in FIG. The second adhesive member 223 may be formed in various shapes depending on the shape of the second panel 224.

The second adhesive member 223 prevents light transmitted from the light source unit 230 from flowing out between the second guide panel 222 and the second panel 224. [ The second adhesive member 223 may prevent light from leaking through the bezel.

The second panel 224 includes a lower substrate 224a (shown in Fig. 5), a lower substrate 224b (shown in Fig. 5), and a liquid crystal layer 224b interposed between the upper substrate 224a and the lower substrate 224b. And outputs an image by controlling the amount of light emitted from the light source unit 230.

Here, polarizing films 224c and 224d may be attached to the upper substrate 224a and the lower substrate 224b. The second panel 224 may be attached to the second guide panel 222 by the second adhesive member 223.

A panel protector (not shown) may be formed on a side surface of the second panel 224 to protect the side surface. The panel protector may be formed of a silicone-based or ultraviolet (UV) curing sealant (or resin).

A data driver IC for supplying a data voltage to the data lines of the second panel 224 may be disposed in the second connection part 225.

In this case, the second display unit 220 may be connected to the printed circuit board 250 through at least one second connection unit 225 to receive signals from the driving circuits.

Although not shown, data pad electrodes connected to the data lines arranged in the active area are disposed in the pad part of the non-display area of the second panel 224. The second connection part 225 is electrically connected to the data pad electrodes.

In addition to the data lines, gate pads connected to the gate lines disposed in the active region may be disposed in the pad portion. In this case, the second connection part 225 may be electrically connected to the gate pad electrodes.

In addition, power pad electrodes connected to various power lines arranged in the second panel 224 may be disposed in the pad portion. In this case, the second connection unit 225 may be electrically connected to the power pad electrodes. The pad electrodes and the second connection part 225 may be electrically connected by an anisotropic conductive film (ACF). The second connection part 225 may be made of a flexible material, for example, a polyimide (PI) material.

The light source unit 230 may be disposed at a position corresponding to one of the side surfaces of the light guide plate. The light source unit 230 is guided by the first guide panel 212 and the second guide panel 222 and has a function of irradiating light to the first panel 214 and the second panel 224 .

The light source unit 230 includes at least one light source and a substrate for supporting the light source and supplying power to the light source. As the light source, various kinds of lamps may be used, and in particular, a light emitting diode (LED) may be used.

The light guide plate 240 is formed of a transparent material and is formed into a plate shape. The light guide plate 240 irradiates the light output from the light source 230 in the first direction and the second direction. For example, the light guide plate 240 may scatter light reflected from the light source and reflect the light to the first panel 214 and the second panel 224. The light guide plate 240 may be made of plastic or resin such as PMMA (Polymethylmethacrylate).

4, the printed circuit board 250 is disposed at a position corresponding to one of the side surfaces of the light guide plate 240 (e.g., a position corresponding to the same side as the light source 230) .

The first connection unit 215 may be connected to the first side of the PCB in the first direction and the second connection unit 225 may be connected to the second side of the PCB in the second direction.

The printed circuit board 250 is electrically connected to the lines disposed in the first connection part 215 and the second connection part 225.

The data driver IC for supplying data voltages to the data lines may be mounted on the printed circuit board 250. The data driver IC converts analog data voltages inputted from the timing controller into analog data voltages, and supplies data voltages of one horizontal line to the data lines for every one horizontal period in which scan pulses are supplied to the gate lines.

A control unit (not shown) for controlling driving of the data driver IC mounted on the first connection unit 215, the second connection unit 225, or the printed circuit board 250 is connected to the printed circuit board 250 Can be mounted.

The controller may control driving of a gate driver (not shown) for sequentially supplying gate pulses to the gate lines. The gate driver (not shown) may be embedded in the first panel 214 and the second panel 214 and may be manufactured as a separate chip, and then the first panel 214 and the second panel 214 Respectively.

That is, the printed circuit board 250 is provided with driving circuits for driving the first panel 214 and the second panel 224, so that the first panel 214 and the second panel 224 A signal can be transmitted to drive the antenna.

Accordingly, the double-sided liquid crystal display device according to the present invention can achieve the following operational effects.

First, in the double-sided liquid crystal display device according to the present invention, the first display unit 210 and the second display unit 220 are coupled to each other with a single light guide plate 240 interposed therebetween. Therefore, in comparison with the conventional double-side liquid crystal display device, the supporting portion 30 can be omitted in the double-side liquid crystal display device according to the present invention.

Therefore, the distance between the first display unit 210 and the second display unit 220 may be omitted. Accordingly, the thickness of the double-side liquid crystal display device according to the present invention can be reduced as compared with the prior art.

Second, the two-sided liquid crystal display device according to the present invention can drive the first display unit 210 and the second display unit 220 using one printed circuit board 250. Therefore, in comparison with the conventional double-side liquid crystal display device, the first main body 10 and the second main body 20 are not separately manufactured in the double-sided liquid crystal display device according to the present invention. Accordingly, the double-sided liquid crystal display device according to the present invention uses one printed circuit board 250, and thus the thickness can be reduced as compared with the conventional double-side liquid crystal display device. Further, according to the present invention, since complicated manufacturing processes can be omitted, the manufacturing cost can be reduced.

Third, in the double-sided liquid crystal display device according to the present invention, the components constituting the first body 10 and the second body 20, such as the reflector, the cover bottom, and the rear cover, have. Therefore, the overall weight of the double-side liquid crystal display device according to the present invention can be reduced. Therefore, compared to the conventional art, the LCD device according to the present invention can reduce the volume as well as the weight, thereby improving the space utilization of the user.

FIG. 5 is a cross-sectional view taken along line A-A 'of FIG. 4, and FIG. 6 is a cross-sectional view taken along line B-B' of FIG.

5, the first guide panel 212 and the second guide panel 222 may be fastened with the light guide plate 240 and the light source 230 interposed therebetween. To this end, the first guide panel 212 is provided with at least one fastening groove 212a. In this case, the second guide panel 222 may be provided with at least one fastening member 222a.

The fastening member 222a may be installed on the upper surface of the second guide panel 222 so as to protrude from the upper surface of the second guide panel 222. [ The fastening member 222a may be inserted into the fastening groove 212a. For example, the fastening member 222a may be provided in the form of a screw, a hook, or the like. The first guide panel 212 and the second guide panel 222 may be fastened to each other as the fastening member 222a is inserted into the fastening groove 212a.

The coupling groove 212a is formed in the first guide panel 221 at a position corresponding to the coupling member 222a. For example, when the fastening member 222a is provided on the upper surface of the second guide panel 222, the fastening groove 212a is formed on the upper surface of the first guide panel 221, Can be fixed so as not to be separated.

Although not shown, when the fastening member 222a is a screw, a fixing part capable of fixing the fastening member 222a such as a screw thread may be formed in the fastening groove 212a. Accordingly, the double-side liquid crystal display device according to the present invention can fasten the first display portion 210 and the second display portion 220 by fastening the fastening member 222a to the fastening groove 212a, Compared with the prior art, it can contribute to reduce the number of processes of joining the first body 10 and the second body 20. Therefore, the double-sided liquid crystal display device according to the present invention can contribute to further reduce the manufacturing cost according to the manufacturing process.

6, the printed circuit board 250 is disposed on the outside of the first guide panel 212 and the second guide panel 222, and is disposed on one of the side surfaces of the light guide plate 240 As shown in Fig. In this case, the light source unit 230 is disposed inside the first guide panel 212 and the second guide panel 222, and may be disposed at a position corresponding to the printed circuit board 250.

6, the double-sided liquid crystal display module according to the present invention includes the light source unit 230, the first guide frame 212 and the second guide frame 222, the printed circuit board 250).

Since the printed circuit board 250 is disposed outside the position corresponding to one of the side surfaces of the light guide plate 240, the double-side liquid crystal display device according to the present invention can contribute to reduce the size of the bezel have.

Here, the main printed circuit board 130 may be positioned below the printed circuit board 250. Although not shown, in this case, an insulator for preventing the short circuit of the printed circuit board 250 and the main printed circuit board 240 may be inserted between the printed circuit board 250 and the main printed circuit board have.

The main printed circuit board 130 is electrically connected to the printed circuit board 250 by the first front cover 110 or the second front cover 110 without contacting the printed circuit board 250, As shown in FIG.

In the double-sided liquid crystal display device according to the present invention, the printed circuit board 250 and the main printed circuit board 130 are installed close to each other. Accordingly, accessories such as an extension cable (cable) between the printed circuit board 250 and the main printed circuit board 130 can be reduced, and the double-sided liquid crystal display module can be easily combined.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

110: first front cover 120: second front cover
130: main printed circuit board 200: liquid crystal display module
210: first display section 220: second display section
230: Light source part 240: Light guide plate
250: printed circuit board

Claims (10)

A first display unit for outputting an image in a first direction;
A second display unit for outputting an image in a second direction opposite to the first direction;
A light source unit for emitting light;
A light guide plate disposed between the first display unit and the second display unit and transmitting the light emitted from the light source unit to the first display unit and the second display unit; And
And a printed circuit board on which driving circuits for driving the first display section and the second display section are arranged. The method according to claim 1,
Wherein the light source part and the printed circuit board are disposed at positions corresponding to any one of the side surfaces of the light guide plate,
Wherein the first display portion is disposed on one of two planes of the light guide plate,
And the second display portion is disposed on the other one of the planes of the light guide plate. The method according to claim 1,
The first display unit is connected to the printed circuit board via at least one first connection unit, receives signals from the driving circuits,
Wherein the second display portion is connected to the printed circuit board via at least one second connection portion, and receives signals from the drive circuits. The method of claim 3,
Wherein the first connection part is connected to a first side of the PCB in the first direction and the second connection part is connected to a second side of the PCB in the second direction. The method according to claim 1,
The first display unit displays,
A first guide panel for guiding the light guide plate and the light source unit; And
And a first panel supported by the first guide panel and driven by signals transmitted from the driving circuits to output an image,
The second display unit displays,
A second guide panel for guiding the light guide plate and the light source unit; And
And a second panel supported by the second guide panel and driven by signals transmitted from the driving circuits to output an image. 6. The method of claim 5,
Wherein the first guide panel and the second guide panel are fastened with the light guide plate and the light source portion interposed therebetween. The method according to claim 6,
Wherein the printed circuit board is disposed outside the first guide panel and the second guide panel and is disposed at a position corresponding to one of the side surfaces of the light guide plate. 8. The method of claim 7,
Wherein the light source unit is disposed inside the first guide panel and the second guide panel and is disposed at a position corresponding to the printed circuit board. The method according to claim 6,
Wherein at least one fastening member is provided on the second guide panel,
Wherein the first guide panel is provided with at least one fastening groove to be fastened to the fastening member,
Wherein the first guide panel and the second guide panel are fastened by fastening the fastening member and the fastening groove. A double-sided liquid crystal display module;
A first front cover covering the sides of the double-sided liquid crystal display module in a first direction of the double-side liquid crystal display module;
A second front cover covering the sides of the double-sided liquid crystal display module in a second direction opposite to the first direction; And
And a main printed circuit board for driving the double-sided liquid crystal display module,
The double-sided liquid crystal display module includes:
A first display unit for outputting an image in a first direction;
A second display unit for outputting an image in a second direction opposite to the first direction;
A light source unit for emitting light;
A light guide plate disposed between the first display unit and the second display unit and transmitting the light emitted from the light source unit to the first display unit and the second display unit; And
And a printed circuit board on which driving circuits for driving the first display portion and the second display portion are disposed,
Wherein the main printed circuit board is connected to the printed circuit board.
KR1020150120287A 2015-08-26 2015-08-26 Double surface liquid crystal display module and double surface liquid crystal display apparatus using the same KR20170024801A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102620479B1 (en) 2023-10-19 2024-01-03 센티오 주식회사 Bezeless double-Sided Liquid Crystal Display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102620479B1 (en) 2023-10-19 2024-01-03 센티오 주식회사 Bezeless double-Sided Liquid Crystal Display

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