KR20140005453A

KR20140005453A - Liquid cristal display device and mobile terminal having it

Info

Publication number: KR20140005453A
Application number: KR1020120072646A
Authority: KR
Inventors: 조윤호; 이상학; 황시연; 오형훈; 신진만; 이병용; 강충구; 박종석
Original assignee: 엘지전자 주식회사
Priority date: 2012-07-04
Filing date: 2012-07-04
Publication date: 2014-01-15

Abstract

An active area including a thin film transistor and a pixel electrode formed at a portion where a plurality of transversely extending gate lines and a plurality of longitudinally extending data lines cross each other; A gate circuit part disposed on one side of the active region in a lateral direction and including a gate driving circuit connected to the gate line; A signal input part connected to the gate driver and disposed next to the gate driver and including a clock wire extending in a longitudinal direction; And an LCD drive IC positioned on one side of the active region in the longitudinal direction and connected to the signal input unit to control the pixel electrode. Thus, two liquid crystal displays may be used as a single screen by applying to a dual type mobile terminal.

Description

Liquid crystal display and mobile terminal having same {Liquid Cristal Display Device and Mobile Terminal having it}

The present invention relates to a liquid crystal display capable of reducing the size of the other side bezel of the mobile terminal by disposing the gate driver of the liquid crystal display only on one side, and a mobile terminal having the same.

Recently, as the information society has evolved rapidly, liquid crystal displays have been in the spotlight as one of the flat panel displays that can reduce the weight and volume, which is a disadvantage of the Cathode Ray Tube (CRT).

A liquid crystal display is an apparatus that expresses an image by using optical anisotropy and birefringence characteristics of liquid crystal molecules. When an electric field is applied, the arrangement of liquid crystals is changed, and light transmission characteristics are also changed according to the changed alignment direction of the liquid crystals. .

The liquid crystal display has a layered structure in which a pair of glass substrates (color filter layer and a lower substrate) on which electrodes are formed are disposed to face each other, and has a layer structure in which liquid crystal molecules are injected between the glass substrates. It includes a driving unit for driving.

The liquid crystal molecules injected between the pair of glass substrates are arranged in a specific direction according to an electrical signal applied from the outside, thereby causing dynamic scattering to control light transmission.

Liquid crystal displays are used as display units for monitors and terminals of desktop computers and other office or home appliances because of their light weight, thinness, and low power consumption.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

Disclosure of Invention An object of the present invention is to provide a liquid crystal display capable of reducing the size of the other side bezel of the mobile terminal by disposing the gate driver of the liquid crystal display only on one side thereof, and a mobile terminal having the same.

According to an aspect of the present invention, an active area including a thin film transistor and a pixel electrode formed at a portion where a plurality of transversely extending gate lines and a plurality of longitudinally extending data lines cross each other; A gate circuit part disposed on one side of the active region in a lateral direction and including a gate driving circuit connected to the gate line; A signal input part connected to the gate driver and disposed next to the gate driver and including a clock wire extending in a longitudinal direction; And an LCD drive IC positioned on one side of the active region in the longitudinal direction and connected to the signal input unit to control the pixel electrode.

The LCD driving IC may include a plurality of gate pads connected to the signal input unit, and the plurality of gate pads may be formed to be biased in a direction in which the gate driving unit is located.

The gate driver may be integrally formed on a lower substrate on which the thin film transistor and the pixel electrode are formed.

The LCD driving IC may be disposed to be biased in a direction in which the gate driving unit is located.

According to another aspect of the invention, the size of the transverse one side bezel of the opening formed in the front is larger than the size of the other bezel and the electronic component is mounted therein; A liquid crystal display coupled to the opening, wherein the liquid crystal display includes a thin film transistor and a pixel electrode formed at a portion where a plurality of transversely extending gate lines and a plurality of longitudinally extending data lines cross each other; Active area; A gate circuit part disposed on one side in the lateral direction of the active region and including a gate driving circuit connected to the gate line; A signal input part connected to the gate driver and disposed next to the gate driver and including a clock wire extending in a longitudinal direction; And an LCD drive IC positioned on one side of the active region in the longitudinal direction and connected to the signal input unit to control the pixel electrode.

A pair of cases in which electronic components are mounted therein and disposed in a transverse direction; A hinge coupled to side surfaces of the pair of cases to connect the pair of cases; An opening formed by being biased in a direction in which the hinge is coupled to the case; And a liquid crystal display coupled to the opening, wherein the liquid crystal display includes a thin film transistor and a pixel electrode formed at a portion where a plurality of horizontally extending gate lines and a plurality of longitudinally extending data lines cross each other. Active Area; A gate circuit part on a side of the active region in a direction opposite to the direction in which the hinge is disposed, the gate circuit part including a gate driving circuit connected to the gate wiring; A signal input part connected to the gate driver and disposed next to the gate driver and including a clock wire extending in a longitudinal direction; And an LCD drive IC positioned on one side of the active region in the longitudinal direction and connected to the signal input unit to control the pixel electrode.

In this case, the LCD driving IC may include a plurality of gate pads connected to the signal input unit, and the plurality of gate pads may be formed to be biased in a direction in which the gate driving unit is located.

By using the liquid crystal display of the present invention, the size of the left and right bezels can be different, so that the two liquid crystal displays can be used as one screen by applying to a dual type mobile terminal.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a front perspective view showing an embodiment of a mobile terminal according to an aspect of the present invention.
2 is a front perspective view showing another embodiment of a mobile terminal according to an aspect of the present invention.
3 is a rear perspective view showing another embodiment of a mobile terminal according to an aspect of the present invention.
4 is a front perspective view showing an embodiment of a liquid crystal panel according to another aspect of the present invention.
5 is a front perspective view showing another embodiment of a liquid crystal panel according to another aspect of the present invention.
FIG. 6 is an enlarged view of a portion A of FIG. 5.
FIG. 7 is an enlarged view of a portion B of FIG. 5.

Hereinafter, a mobile terminal 100 according to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal 100 described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) have. However, it will be easily understood by those skilled in the art that the configuration according to the embodiment described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, except when applicable only to the mobile terminal 100 .

1 is a perspective view of a mobile terminal 100 or a mobile terminal according to the present invention.

The disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body of the mobile terminal 100 includes a casing 101, 102, In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102.

In some cases, electronic components may be mounted on the surface of the rear case 102 as well. Electronic components mounted on the surface of the rear case 102 include a battery, a USIM card, a memory card, and the like which are detachable by the user. In this case, the rear case 102 may further include a rear cover 103 for covering the surface thereof. When the rear cover 103 is removed, the surface of the rear case 102 is exposed.

As shown in FIG. 1, when the rear cover 103 is coupled, only a side surface of the rear case 102 may be exposed. When the size of the rear cover 103 is reduced, Some may also be exposed.

The cases 101, 102, and 103 may be formed by injection molding synthetic resin or may be formed of a metal material such as stainless steel (STS) or titanium (Ti).

As shown in FIG. 2, the terminal cases 210 and 220 may be paired in a lateral direction to form a dual type mobile terminal 200. The dual type mobile terminal 200 may be configured to open and close the hinge 230 as shown in FIG. 3 between the pair of cases 210 and 220.

The liquid crystal display 150, the audio output unit 152, the camera 121, the user input unit 130/131, 132, the microphone 122, the interface 170, and the like are disposed in the terminal cases 101, 102, 210, and 220. Can be.

A liquid crystal display (LCD) 150 occupies most of the main surface of the front case 101. The audio output unit 152 and the camera 121 are disposed in regions adjacent to one end of both ends of the liquid crystal display 150, and the user input unit 131 and the microphone 122 are disposed in regions adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

The liquid crystal display 150 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The liquid crystal display 150 is a display device using the property of the liquid crystal that the transparency or color is changed as the arrangement of the liquid crystal particles changes according to a specific temperature or voltage. A transparent electrode and a transistor are formed on a pair of transparent substrates, and the periphery is sealed and liquid crystal is injected between the transparent substrates.

Two or more liquid crystal displays 150 may exist according to the implementation form of the mobile terminal 100. For example, a plurality of liquid crystal displays may be spaced apart or integrally disposed on one surface of the mobile terminal 100, or may be disposed on different surfaces. Alternatively, as shown in FIG. 2, a pair of bodies may be provided, and a liquid crystal display may be provided in each body.

As shown in FIGS. 1 and 2, the liquid crystal display 150 of the present invention is characterized by having a bezel size larger in one side than a bezel size in the other side. FIG. 1 shows that the display unit 150 is biased to the right by making the size of the bezel on the right side smaller than the left side.

In particular, as shown in FIG. 2, when a pair of cases 210 and 220 are attached to each other and a dual type screen is used, in order to use the two liquid crystal displays 150 as one screen, the pair of liquid crystal displays 150 may be used. Narrower intervals are preferred. Referring to Figure 2 it can be seen that the bezel of the portion adjacent to the pair of case 210, 220 is narrow and the outer bezel is large.

In order to reduce the size of the bezel on the other side, structures such as wires, which are located on both left and right sides of the liquid crystal display 150, are formed only on one side. The width of the inactive region on the other side of the active region can be reduced as compared with the case where the wiring structure such as the gate circuit is formed on both the left and right sides. Therefore, when the mobile terminal is mounted on the mobile terminal, the size of the bezel of the other side may be smaller than that of the one side of the bezel. The detailed structure of the liquid crystal display of this invention is mentioned later.

When the liquid crystal display 150 and the touch sensor 137 form a mutual layer structure or are integrally formed (hereinafter referred to as a touch screen), the liquid crystal display 150 may also be used as an input device in addition to an output device. Can be. For example, when the touch sensor has a form of a touch film, a touch sheet, or a touch pad, the touch sensor may be stacked on the liquid crystal display 150 to form a layer structure. The touch sensor may be included in the configuration of the liquid crystal display 150 to be integrated. Can be made.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the liquid crystal display 150 or capacitance generated at a specific portion of the liquid crystal display 150 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller (not shown). The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. As a result, the controller 180 can determine which area of the liquid crystal display 150 has been touched.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame may be displayed on the liquid crystal display 150.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131, 132, and 133. The operation units 131, 132, and 133 may be collectively referred to as a manipulating portion.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives a command such as start, end, scroll, and the like, and the second operation unit 132 inputs a command such as adjusting the volume of the sound output from the sound output unit 152. The third operation unit 133 may receive a command such as activating / deactivating the touch recognition mode of the liquid crystal display 150.

The operation units 131, 132, and 133 may have a button method for recognizing when a user applies pressure. In addition to the liquid crystal display 150, the operation units 131, 132, and 133 may include a touch sensor. The user's command may be input only by touching.

Hereinafter, the liquid crystal display 150 of the present invention will be described with reference to FIGS. 4 to 7.

FIG. 4 is a plan view showing a liquid crystal display 150 when using one case, that is, when only one liquid crystal display 150 is used as shown in FIG. 1, and FIG. 5 is a pair as shown in FIG. 2. It is a top view which shows the liquid crystal display 150 in the case of using a case.

The liquid crystal display 150 includes a pair of glass substrates and liquid crystals filled therebetween, and the glass substrates are divided into a lower array substrate and an upper color filter substrate.

The portion where power is applied to drive the liquid crystal display 150, that is, to change the arrangement of the liquid crystal, is the lower array substrate, and the array substrate is an active region 1510 for displaying an image and an electrode of the active region 1510 around it. A driver is arranged for applying a signal.

As the driving unit positioned around the active area 1510 of the liquid crystal display 150 is deflected to one side, the area required around the active area 1510 is smaller than one side. .

4 and 5, the driving unit includes a gate circuit unit 1520, a signal input unit, and an LCD driving IC 1540. FIG. 6 is a detailed enlarged view of a portion 'A' of FIG. 5, and shows detailed configurations of the active region 1510, the gate circuit unit 1520, and the signal input unit.

The active region 1510 includes a thin film transistor 1513 and a pixel electrode connected to the thin film transistor 1513 provided at an intersection point of the gate line 1511 extending in the lateral direction and the data line 1512 extending in the longitudinal direction. do. When power is applied to the thin film transistor 1513 through the gate line 1511 and the data line 1512, the arrangement of the liquid crystals is changed.

The gate line 1511 and the data line 1512 are connected to a driver. In the present invention, a gate drive circuit connected to the gate line 1511 has a glass in panel (GIP) structure formed on the array substrate.

The conventional gate driving circuit is implemented on a separate printed circuit board and attached to the liquid crystal display 150. However, in the GIP structure of the present invention, the gate driving circuit is directly formed on the transparent substrate. By forming the gate driving circuit on the transparent substrate, the size of the liquid crystal display 150 can be reduced.

In particular, the gate driving circuit of the present invention is not distributed to both sides of the active region 1510, but is formed only on one of the left and right sides. In the case of FIG. 4, the gate circuit unit 1520 is disposed on the left side of the active region 1510. In the case of FIG. 5, the liquid crystal display 150 on the left side of the active region 1510 is disposed on the left side of the active region 1510. In the liquid crystal display 150 on the right side, a gate driving circuit is disposed on the right side of the active region 1510.

The gate driving circuit connected to the gate wiring 1511 is connected to the LCD driving IC 1540 positioned above or below (lower in the drawing) through the clock wiring 1531 of the signal input unit.

The signal input unit is positioned next to the gate circuit unit 1520. In the present invention in which the gate circuit unit 1520 is not distributed and is formed only on one side, the signal input unit is also formed on only one side.

FIG. 7 is a detailed enlarged view of a portion 'B' of FIG. 5, and illustrates a shape in which the clock line 1531 of the signal input unit is connected to the LCD driving IC 1540. The LCD driving IC 1540 is connected to the data line 1512 extending in the longitudinal direction, and is also connected to the clock line 1531 to control the gate line 1511.

In the related art, when the gate driving circuits are disposed on both the left and right sides, the clock wires 1531 are also distributed to both the left and right sides. The LCD driving IC 1540 has a gate pad 1541 connected to the clock wires 1531. It is formed on both sides.

However, in the present invention, when the LCD driving IC 1540 is used, the length of the clock wire 1531 becomes longer and the area occupied by the clock wire 1531 becomes wider. Thus, the clock wire 1531 is shown in FIG. 7. It is preferable to be formed inclined to the side located.

In addition, since it is connected to the clock wire 1153 located on only one of the left and right, as shown in FIGS. 4 and 5, when the LCD driving IC 1540 is disposed unilaterally toward the clock wire 1153, It is preferable because the length can be shortened.

In the prior art, when the gate driving circuit is divided into two sides, a width of about 1.2 mm is required on the left and right sides of the active region 1510. In the case of the present invention, in the structure in which the gate driving circuit and the clock wiring 1531 are located only on one side, the portion without the gate driving circuit and the clock wiring 1531 can be reduced to 1 mm or less (about 0.9 mm), and the gate driving is performed. Even if the circuit and clock wiring 1531 are formed only on one side, the gate driving circuit is arranged in the horizontal direction, so that the extent to which the clock wiring 1531 increases in the horizontal direction is increased to about 1.3 mm.

Therefore, the width required for the gate driving circuit and the clock wiring 1531 to the left and right of the active region 1510 can be further reduced than the conventional 2.4 mm.

As described above, when the liquid crystal display 150 of the present invention is used, the size of the left and right bezels may be different, and thus, two liquid crystal displays may be used as a single screen by applying to a dual type mobile terminal.

It will be apparent to 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.

Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

100 and 200: mobile terminal 150: liquid crystal display
1510: active area 1511: gate wiring
1512: data wiring 1513: thin film transistor
1514: pixel electrode 1520: gate circuit portion
1521: gate driving circuit 1530: signal input
1531: clock wiring 1540: LCD drive IC
1541: gate pads 101, 102, 210, 220: case
230: Hinge

Claims

An active area including a thin film transistor and a pixel electrode formed at a portion where a plurality of transversely extending gate lines and a plurality of longitudinally extending data lines cross each other;
A gate circuit part disposed on one side of the active region in a lateral direction and including a gate driving circuit connected to the gate line;
A signal input part connected to the gate circuit part and disposed next to the gate circuit part and including a clock wire extending in a longitudinal direction; And
And an LCD drive IC positioned on one side of the active area in the longitudinal direction and connected to the signal input part to control the pixel electrode.

The method of claim 1,
The LCD drive IC,
A plurality of gate pads connected to the signal input unit,
The plurality of gate pads are formed to be deflected in a direction in which the gate circuit portion is located.

The method of claim 1,
The gate circuit part
And a lower substrate on which the thin film transistor and the pixel electrode are formed.

The method of claim 1,
The LCD drive IC,
And the gate circuit part is disposed to be deflected in a direction in which the gate circuit part is located.

A case in which the size of one side of the bezel of the opening formed in the front surface is larger than that of the other side of the bezel, and an electronic component is mounted therein;
A liquid crystal display coupled to the opening;
The liquid crystal display,
An active area including a thin film transistor and a pixel electrode formed at a portion where a plurality of transversely extending gate lines and a plurality of longitudinally extending data lines cross each other;
A gate circuit part disposed on one side in the lateral direction of the active region and including a gate driving circuit connected to the gate line;
A signal input part connected to the gate circuit part and disposed next to the gate circuit part and including a clock wire extending in a longitudinal direction; And
And a LCD drive IC positioned on one side of the active area in the longitudinal direction and connected to the signal input part to control the pixel electrode.

A pair of cases in which electronic components are mounted therein and disposed in a transverse direction;
A hinge coupled to side surfaces of the pair of cases to connect the pair of cases;
An opening formed by being biased in a direction in which the hinge is coupled to the case; And
A liquid crystal display coupled to the opening;
The liquid crystal display,
An active area including a thin film transistor and a pixel electrode formed at a portion where a plurality of transversely extending gate lines and a plurality of longitudinally extending data lines cross each other;
A gate circuit part on a side of the active region in a direction opposite to the direction in which the hinge is disposed, the gate circuit part including a gate driving circuit connected to the gate wiring;
A signal input part connected to the gate circuit part and disposed next to the gate circuit part and including a clock wire extending in a longitudinal direction; And
And a LCD drive IC positioned on one side of the active area in the longitudinal direction and connected to the signal input part to control the pixel electrode.

The method according to claim 5 or 6,
The LCD drive IC,
A plurality of gate pads connected to the signal input unit,
And the plurality of gate pads are deflected in a direction in which the gate circuit part is located.

The method according to claim 5 or 6,
The gate circuit portion,
And a thin film transistor and a lower substrate on which the pixel electrode is formed.

The method according to claim 5 or 6,
The LCD drive IC,
And the gate circuit part is disposed in a deflected direction.