KR20070107227A - Liquid crystal display and backlihgt unit - Google Patents

Abstract

A liquid crystal display and a backlight unit are provided to minimize inequality of brightness in a display picture by arranging many light emitting devices at an area having low brightness while arranging light emitting devices at the minimum at an area having high brightness. A liquid crystal panel(110) includes a plurality of driving chips(120). A backlight unit has groups of light sources(100) to correspond to an area where the plurality of driving chips are formed. The backlight unit includes a plurality of light emitting devices(10) emitting lights, wherein the plurality of light emitting devices is aligned at predetermined gaps for forming the groups of light sources. The groups of light sources are arranged at an area of which brightness is unequal to compensate the brightness.

Description

Liquid Crystal Display and Backlihgt Unit

1 is an exploded perspective view showing a liquid crystal display device having a conventional backlight unit.

2A is a plan view of a liquid crystal display device in which staining occurs due to a conventional mounted driving circuit.

Figure 2b is a view showing a hot spot generated in the backlight unit using a conventional light emitting diode.

3 is an exploded perspective view of a liquid crystal display according to the present invention.

4 is a plan view of a liquid crystal display according to the present invention;

5 is a view showing a second embodiment of the light emitting device arrangement according to the present invention;

6 is a view showing a third embodiment of the light emitting device arrangement according to the present invention;

* Description of the symbols for the main parts of the drawings *

  1 liquid crystal display 5 backlight unit

 10: light emitting element 20: optical element guide

 30: rear cover 40: supporter main

 50: optical member 100: light source of 1 group

110: liquid crystal panel 120: driving chip

130: front cover

The present invention relates to a liquid crystal display device, and more particularly, to a backlight unit and a liquid crystal display device using a self-light emitting element as a light source.

In the information age, the expansion of various video information requires a natural and sophisticated display device suitable for this, and the emergence of a portable computer for acquiring the information quickly requires a display device that is light in weight and has excellent power consumption characteristics.

Recently, flat panel displays (OLEDs) such as OLED (Organic Light Emitting Display) and LCD (Liquid Crystal Display), which are thin, light, and low in power consumption, are expanding their application range as they solve technical difficulties. .

Among these flat panel display devices, liquid crystal display is an apparatus that displays an image using liquid crystal, which is thinner and lighter than other display devices, and has low power consumption and low driving voltage. It is widely used throughout.

The liquid crystal display device needs a backlight unit that can serve as a light source due to its inability to emit light. Here, the backlight unit is considered to be an independent product because it includes a plurality of components by itself.

As the light source, a CCFL (Cold Cathode Fluorescent Lamp) that emits a linear light source is mainly used as a light source, and a light emitting diode (LED) that emits a point light source is expanding its use area.

Hereinafter, a conventional liquid crystal display device will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing a liquid crystal display device having a conventional backlight unit.

As shown in FIG. 1, the liquid crystal display 501 includes a liquid crystal panel 610 for displaying an image and a backlight unit 505 for supplying light to the liquid crystal panel 610.

The liquid crystal panel 610 is disposed on the backlight unit 505 and is disposed on the supporter main 540 which fixes / supports the optical member 550 of the backlight unit 505. Meanwhile, a front cover 630 is provided on the liquid crystal panel 610 to protect the liquid crystal panel 610.

The liquid crystal panel 110 includes a lower plate having a plurality of thin film transistors and an upper plate having a plurality of color filters, and is formed between the upper plate and the lower plate with a liquid crystal layer interposed therebetween.

Here, the lower plate is provided with a plurality of driving chips 620 to drive the thin film transistor. The driving chip 620 is provided with a gate driving chip and a data driving chip.

The driving chip 620 is provided at the edge of the liquid crystal panel 610. In more detail, the liquid crystal panel 610 is mounted on the lower surface of the liquid crystal panel 610 and connected to a line connected to the thin film transistor.

However, heat may be provided to the driving chip 620 to mount the driving chip 620 on the lower plate, and the heat may be transferred to the liquid crystal panel 610. Therefore, the heat provided to the liquid crystal panel 610 to mount the driving chip 620 may affect the liquid crystal interposed between the upper plate and the lower plate.

Therefore, the heat transferred to the liquid crystal panel 610 may change the cell gap of the liquid crystal formed between the upper and lower plates. In addition, the properties of the liquid crystal itself can be modified by heat. The liquid crystal transmits light by moving a liquid crystal molecule by an electric field, and the liquid crystal whose properties are modified may have a different amount of light transmitted by moving differently from the liquid crystal around the liquid crystal.

The liquid crystal display 501 needs a light source because it is not a light emitter. Thus, the backlight unit 505 is provided to supply light to the rear surface of the liquid crystal panel 610 for displaying an image.

The backlight unit 505 may use a fluorescent lamp, a light emitting diode, or the like as a light source.

Here, the backlight unit 505 of the fluorescent lamp forms mercury encapsulated inside the fluorescent lamp with a metal to easily form an amalgam, thereby degrading the life of the lamp, causing a great change in luminance due to temperature changes, and heavy metals of high toxicity. Disposal of waste due to the use of mercury has become a problem.

In order to solve such a problem, the backlight unit 505 using a light emitting diode (LED) is provided.

The light emitting diode may be formed of a plurality of red, green, and blue colors or a white color as a point light source. The light emitting diode may implement a high brightness backlight unit 505 with an advantage of miniaturization of the backlight unit 505 and uniformity of light.

Thus, as an example, the backlight unit 505 uses the light emitting diode 510 as a light source.

The backlight unit 505 includes a rear cover 530 and a plurality of light emitting diodes 510 disposed at a predetermined interval to disperse light on side surfaces of the rear cover 530 to emit light.

The backlight unit 505 includes a printed circuit board 525 for supplying power to the light emitting diodes 510 to align the light emitting diodes 505 at equal intervals and to support the printed circuit boards 525. And an optical element guide 520 including a housing 523 to protect the same.

The backlight unit 505 includes a light guide plate for converting light generated by the light emitting diodes 510 into a surface light source, and an optical member 550 including an optical sheet disposed on the light guide plate for diffusing and condensing light. Is provided.

The light emitting diode 510 of the backlight unit 505 receives power from the printed circuit board 525 to emit light, and the light is supplied to the liquid crystal panel 610 by the optical member 550. Will be supplied.

FIG. 2A is a plan view of a liquid crystal display device in which staining occurs due to a conventionally mounted driving circuit, and FIG. 2B illustrates a hot spot generated in a backlight unit using a conventional light emitting diode.

As shown in FIG. 2A, the liquid crystal display device 1 includes a liquid crystal panel 110 and a backlight unit 5. Here, the drawing is described with reference to FIG. 1 because the backlight unit 505 and the liquid crystal panel 610 overlap each other.

In the backlight unit 505, light emitting diodes 510 that emit light are disposed at regular intervals in order to irradiate the liquid crystal panel 610 with equal light.

The liquid crystal panel 110 includes a lower plate having a thin film transistor and a color filter substrate having a color filter. A liquid crystal layer is interposed between the lower plate and the upper plate.

At the edge of the liquid crystal panel 610, a plurality of driving chips 620 are provided to apply driving signals to the thin film transistors. Recently, technologies such as chip on glass (COG), in which the driving chip can form the driving chip 620 on the substrate of the liquid crystal panel 610, rather than a connection method such as TCP, have been developed. The thickness of 610 can be formed thin.

Therefore, the pad line formed on the lower plate and the driving chip 620 are connected by the chip on glass technology. In order to mount the driving chip 620 on the lower plate, heat is provided to the anisotropic conductive film including a bonding material and a conductive ball.

However, the heat provided may cause deformation in the cell gap in which the upper plate and the lower plate are formed at uniform intervals. In addition, the heat may affect the liquid crystal interposed in the liquid crystal panel 610.

The liquid crystal is sensitive to heat, and when heat is applied, properties of the liquid crystal itself may change. That is, the properties of the liquid crystal may be modified to change the motion of the liquid crystal molecules.

Therefore, the liquid crystal of the region where the heat is transferred may have a light transmittance different from that of the region in which the light provided from the backlight unit 505 does not heat.

The liquid crystal may transmit light by the movement of liquid crystal molecules, and the liquid crystal display device 501 may display an image by the transmitted light.

Here, the light transmittance of the liquid crystal is T ∝ Δn × d. That is, the light transmittance T of the liquid crystal is proportional to the cell gap d of the liquid crystal layer and the refractive index Δn of the liquid crystal itself.

Therefore, the liquid crystal display device 501 may have a constant light transmittance when the cell gap d is uniformly formed, and the luminance of the liquid crystal display device 501 may be uniformly provided to provide a clear image. Will be.

However, as shown in the figure, the characteristics of the cell gap and the liquid crystal itself change, so that the heat (Mura) is generated around the driving 620 chip. That is, the light transmittance of the liquid crystal is changed. Therefore, the luminance of the display screen of the liquid crystal display 501 is uniformly formed due to the change in the light transmittance of the liquid crystal.

As shown in FIG. 2B, the light emitting diode 510 has a predetermined radiation angle as a point light source. The emission angle refers to the maximum angle of light emitted from the light emitting diodes 510 in various directions. The light emitting diode 510 is known to have a radiation angle of about 110 ^degrees .

In the conventional liquid crystal display device 501, the light emitting diodes 510 that emit light with a light source are equally spaced apart from the backlight unit 505 by a predetermined interval.

However, the light emitting diode 510 that emits light emits light from one side of the liquid crystal panel 610 at an emission angle (about 110 ^° ).

Therefore, a light emitting diode corresponds to a light emitting diode corresponding to one region of the liquid crystal panel 610, and a dark portion (B) having a relatively high light irradiation amount due to a spacing interval. Occurs.

As described above, according to the amount of light irradiated from the backlight unit, the liquid crystal display may generate a hot spot in which luminance is uneven due to the repetition of the region A and the dark region B. FIG. Accordingly, the hot spots may cause luminance unevenness of the liquid crystal display device 1 and cause display screen degradation.

Therefore, the luminance of the display screen is uneven due to unevenness due to cell gap deformation and hot spots caused by the equal arrangement of the light emitting diodes. May cause.

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid crystal display and a backlight unit that can improve display screen spot defects and hot spot defects due to luminance unevenness by changing the light emitting device arrangement that emits light in the backlight unit. .

In order to achieve the above object, a liquid crystal display device according to the present invention comprises a liquid crystal panel having a plurality of driving chips; And a backlight unit in which a group of light sources are formed to correspond to a region where the driving chip is formed.

The backlight unit may include a plurality of light emitting devices that emit light, and the light emitting devices may be aligned at predetermined intervals to form the light source group.

In this case, the light sources of the first group may be disposed in regions where luminance is uneven to compensate for the luminance.

A backlight unit according to the present invention for achieving the above object is an optical member for diffusing light, condensing light and changing the light path; It characterized in that it comprises a plurality of light sources of a group by uniformly arranging a plurality of light emitting elements for irradiating light to the optical member.

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

3 is an exploded perspective view of a liquid crystal display according to the present invention.

As shown in FIG. 3, the liquid crystal display device 1 according to the present invention includes a liquid crystal panel 110 for displaying an image and a backlight unit 5 for supplying light from the rear surface of the liquid crystal panel 110. .

The liquid crystal panel 110 includes an upper plate including a plurality of color filters and a lower plate including a plurality of switching elements, and form a liquid crystal layer at the interval by separating the upper plate and the lower plate by a predetermined interval.

In the liquid crystal panel 110, a driving chip 120 for driving the switching element is provided at an edge thereof. In detail, a plurality of lines connected to the switching element are formed on the lower plate to drive the switching element provided on the lower plate.

Here, a plurality of driving chips 120 connected to the line are provided on the bottom glass to apply a driving signal to the line. Here, the line and the driving chip 120 are connected to the anisotropic conductive film. The anisotropic conductive film includes a plurality of conductive balls in a bonding material, and when the heat is provided to the bonding material, the bonding material melts and is mounted on the lower plate surface. The conductive ball electrically connects the line and the driving chip 120.

On the other hand, the liquid crystal display device 1 is a display device capable of displaying an image by changing the arrangement of the liquid crystal molecules of the liquid crystal interposed between the upper plate and the lower plate. That is, the liquid crystal panel 110 does not emit light by itself and thus requires a light source. Thus, a backlight unit 5 for supplying light to the liquid crystal panel 110 is provided. The backlight unit 5 itself is considered to be a unique product because it contains a large number of components.

The backlight unit 5 includes a plurality of light emitting devices 10 for emitting light and an optical member 50 for changing the efficiency and light path of the light emitted from the light emitting devices 10.

The light emitting device 10 is preferably a self-light emitting device capable of converting the electrical energy into optical energy while recombining the excited electrons by receiving the provided electrical energy.

The self-luminous device may be a light emitting diode emitting point light, an organic / inorganic EL (organic EL) emitting surface light source, or the like. Here, the self-luminous device is an environmentally friendly light source that can realize high definition and high quality through high color reproducibility, and can be used as a light source of fast response speed.

In addition, the light emitting device 10 preferably emits any one color of yellow, red, green, blue, and white. In addition, the light emitting device 10 may be arranged to emit white light by combining one or more colors.

As such, the color reproducibility of the display device may be improved by using the light emitting device 10 capable of self-emitting color. That is, when realizing colors in the liquid crystal display device 1 by mixing the light emitted from the self-luminous elements, the quantum efficiency is increased because the predetermined color is extracted from the mixed spectrum of each color. Thus, color reproducibility can be improved.

The optical member 50 may include a light guide plate for converting light incident from the light emitting element 10 into a surface light source, a reflection plate provided under the light guide plate to reflect light leaked to the bottom of the light guide plate, and incident from the light guide plate. It may include a plurality of optical sheets for diffusing and condensing the light.

An optical device guide 20 including a printed circuit board 25 capable of applying power to the light emitting device 10 and a housing 23 protecting the light emitting device 10 is provided. The housing 23 is integrated with the rear cover 30, and the rear cover 30 and the supporter main 50 are joined to each other and a plurality of supports are provided to support the optical member 50. .

The light emitting device 10 is mounted on the printed circuit board 25. The printed circuit board 25 is provided with a power supply line to supply power to the light emitting device 10.

The light emitting device 10 according to the present invention may provide a liquid crystal display device 1 having a uniform brightness by being arranged unevenly on the printed circuit board 25.

When the driving chip 120 is formed on the liquid crystal panel 110, heat is provided to the bonding material to mount the driving chip 120 on the lower plate surface. The heat affects the cell gap of the upper and lower plates formed at a predetermined interval, and thus, the cell gap may be changed in the region of the liquid crystal panel 110 to which the heat is transferred. In addition, the liquid crystal molecules of the liquid crystal layer may be phase-shifted by heat to change the refractive index characteristics.

That is, the light transmittance of the liquid crystal is T ∝ Δn × d. That is, the light transmittance T of the liquid crystal is proportional to the cell gap d of the liquid crystal layer and the refractive index Δn of the liquid crystal itself.

Herein, the light transmittance of the liquid crystal is changed according to the cell gap of the upper and lower plates and the refractive index characteristics of the liquid crystal molecules. can do. Therefore, the liquid crystal display 1 may have a problem in that the display image is displayed with uneven luminance.

Thus, a plurality of light emitting devices 10 may be disposed in the backlight unit 5 so as to correspond to a region where the driving chip 120 is formed to compensate for non-uniform light transmission. That is, by arranging the plurality of light emitting devices 10 in regions where light transmittances are different, it is possible to compensate for the reduced luminance to minimize an image that appears as a stain or the like.

In addition, the plurality of light emitting devices 10 may be disposed in an area corresponding to the driving chip 120. Here, the plurality of light emitting devices 10 around the driving chip 120 is defined as a group of light sources 100. At least one light source 100 of the group 1 is disposed around the driving chip 120. The light source 100 of the first group is preferably formed of white light.

4 is a plan view of a liquid crystal display according to the present invention.

As shown in FIG. 4, the liquid crystal display device 1 combines an upper plate and a lower plate and forms a liquid crystal panel 110 with a liquid crystal interposed between the upper and lower plates.

At the edge of the liquid crystal panel 110, a driving chip 120 capable of driving a plurality of switching elements formed in the liquid crystal panel 110 is provided. Here, the driving chip 120 may be provided in plural to drive the switching device.

The driving chip 120 is mounted on the edge of the liquid crystal panel 110, that is, the surface of the lower plate by Surface Mounting Technology (SMT). As such, when the driving chip 120 is mounted on the lower plate surface, there is an advantage in that it can be saved in terms of space and material of the liquid crystal display device 1.

Here, the driving chip 120 and the line of the lower plate are electrically connected by the conductive balls of the anisotropic conductive film (ACF).

In this case, the driving chip 120 is mounted on the lower plate surface by providing heat to an anisotropic conductive film including a bonding material and conductive balls in the bonding material. That is, by heating the bonding material, the driving chip 120 is mounted on the lower plate surface, and the conductive ball is electrically connected to the line of the lower plate and the circuit line of the driving chip 120.

On the other hand, in the liquid crystal display device 1, the liquid crystal interposed in the liquid crystal layer transmits light by the movement of liquid crystal molecules. The light transmittance of the liquid crystal is determined by the cell gap of the liquid crystal and the refractive index of the liquid crystal. This is determined.

However, heat is provided in order for the driving chip 120 to be mounted on the lower plate surface. The heat may affect the liquid crystal layer formed on the liquid crystal panel 110. That is, the heat may modify the cell gap of the liquid crystal that determines the light transmittance of the liquid crystal. The deformation of the cell gap may change the light transmittance of the liquid crystal, thereby causing problems such as mura on the display screen.

In addition, the heat may affect the liquid crystal to modify the characteristics of the liquid crystal. That is, the light transmittance of the liquid crystal may be modified by modifying the refractive index characteristic which is a characteristic of the liquid crystal.

As described above, in the region where the light transmittance of the liquid crystal is deformed by the heat, the amount of light through which the light is transmitted may be different, so that a spot may be formed on the display screen as shown in FIG. Therefore, the light transmittance of the liquid crystal replaces the luminance of the display screen, and a display screen having non-uniform luminance may be generated due to the stain or the like.

Therefore, in the present invention, the light emitting device 10 that is a light source of the backlight unit 5 provided on the rear surface of the liquid crystal panel 110 is non-uniformly arranged so as to minimize the luminance difference in the region where the luminance is different.

As such, the unevenness occurs because the change in light transmission, that is, the luminance is different. Therefore, in order to make the luminance uniform, a plurality of light emitting devices 10 are disposed in a region where brightness is lowered, and a light emitting device 10 is disposed at a minimum in a region where brightness is relatively high, thereby minimizing brightness unbalance generated in a display screen. You can.

That is, as shown in FIG. 2, the disposition of the user's eyes is displayed by changing the arrangement of the light emitting device 10 by a partial region having different luminance (light transmittance of liquid crystal) of the liquid crystal display device 1. The luminance imbalance of the liquid crystal display device 1 may be minimized so that a user may see a clear image.

Meanwhile, the plurality of light emitting devices 10 provided in the region where the driving chip 120 is formed is defined as a group of light sources 100. The light source 100 of the group 1 is preferably formed of white light. Since the white light includes all colors, color distortion can be prevented and a clear image can be provided.

Here, as in the periphery of the driving chip 120, a plurality of light emitting devices 10 are uniformly arranged in a region where luminance is uneven due to a change in light transmittance caused by deformation of a cell gap or the like to form a group of light sources 100. In addition, the light sources 100 of the group 1 are arranged in regions where the luminance is weak.

The light source 100 of the first group may be formed by arranging a plurality of the light emitting devices 10 around one driving chip 120. For example, white light may be formed by two blue and yellow light emitting devices 10.

As such, since the backlight unit 5 is regarded as a product by itself, the luminance of the backlight unit 5 is increased by uniformly disposing the light emitting device 10 in consideration of the light efficiency of the backlight unit 5 itself. When the backlight unit 5 is applied to the liquid crystal display device 1, the cell gap and the refractive index of the liquid crystal are changed in a region where the driving chip 120 is formed, so that the display screen of the liquid crystal display device 1 may be uneven or the like. The same nonuniform brightness may occur.

Therefore, by changing the arrangement of the light emitting device 10 according to the product to which the backlight unit 5 is applied, such as the backlight unit 5 of the present invention, it is possible to improve the luminance characteristics of the applied product.

5 is a view showing a second embodiment of the light emitting device arrangement according to the present invention.

As shown in FIG. 5, one driving chip 120 may be formed on the liquid crystal panel 110. The driving chip 120 is mounted on the lower surface of the liquid crystal panel 110. That is, heat is provided on the lower plate surface, and the heat may cause deformation in the light transmittance of the liquid crystal.

Therefore, the display screen of the region corresponding to the driving chip 120 is degraded or the luminance is improved, so that the peripheral image is relatively dark, thereby reducing display characteristics of the display device.

As shown in " ㉡ ", unevenness of the display screen can be seen by the user due to uneven luminance.

Thus, a plurality of light emitting devices 10 are disposed in a region corresponding to the driving chip 120 to form a group of light sources 100. Here, the light emitting devices 10 of the light sources of the first group are disposed at uniform intervals with respect to the driving chip 120.

That is, a plurality of light emitting devices 10 are disposed in a region corresponding to the driving chip 120 according to a change in liquid crystal light transmittance caused by cell gap deformation of the liquid crystal panel 110.

Accordingly, as shown in FIG. 2, the arrangement of the light emitting device 10 may be changed to minimize defects such as stains formed on the display screen so that the user may not see them.

By disposing a plurality of light emitting elements 10 in a region corresponding to the driving chip 120 to solve the unbalance of the brightness of the display screen due to the light transmittance of the liquid crystal can improve the visibility characteristics of the liquid crystal display device (1) Can be.

6 is a view showing a third embodiment of the arrangement of the light emitting device 10 according to the present invention.

As shown in FIG. 6, the number of driving chips 120 may increase in order to increase the data processing speed as demands for high speed response speed and high resolution of the liquid crystal display device 1 increase. Thus, a plurality of driving chips 120 may be provided in the liquid crystal panel 110.

However, the light transmittance of the liquid crystal is changed around the driving chip 120, so that an unbalance in brightness may occur on the display screen. That is, as shown in " ㉡ ", unevenness of the display screen can be seen by the user due to uneven luminance.

Thus, in order to minimize the luminance imbalance of the display screen, a plurality of light emitting devices 10 are provided around the driving chip 120.

Three or more light emitting devices 10 may be provided in a peripheral area corresponding to the driving chip 120 to form a group of light sources 100. It is preferable that the said light source 100 of 1 group is white light.

Thus, the light emitting device 10 may include a plurality of colors such as red, green, and blue to form a group of light sources 100 as white light. The light emitting device 10 may further include a light emitting device 10 that emits white light.

Although the liquid crystal display device 1 of the present invention has been described as having the light emitting elements 10 provided on the side surfaces thereof, the present invention is not limited thereto, and the plurality of light emitting elements 10 may be arranged in an uneven arrangement on the front surface of the liquid crystal panel 110. It can also be applied to a direct type arranged.

Here, as in the periphery of the driving chip 120, a plurality of light emitting devices 10 are uniformly arranged in a region where luminance is uneven due to a change in light transmittance caused by deformation of a cell gap or the like to form a group of light sources 100. In addition, the light sources 100 of the group 1 are arranged in regions where the luminance is weak.

Therefore, as shown in "㉠", it is possible to minimize the defects such as stains formed on the display screen by changing the arrangement of the light emitting device 10 so that the user can not see.

As described above, in the liquid crystal display device to which the backlight unit is applied, a plurality of light emitting elements 10 are disposed in a region where brightness is lowered in order to make the brightness uniform, and a minimum of the light emitting elements 10 in a region where the brightness is relatively high. In this way, the luminance imbalance generated on the display screen can be minimized.

Therefore, by changing the arrangement of the light emitting device 10 according to the product to which the backlight unit 5 is applied, such as the backlight unit 5 of the present invention, it is possible to improve the luminance characteristics of the applied product.

The present invention can improve the brightness characteristics of the applied product by changing the arrangement of the light emitting device according to the product to which the backlight unit is applied.

Therefore, in the liquid crystal display device to which the backlight unit is applied, a plurality of light emitting elements are disposed in a region where brightness is lowered in order to make the luminance uniform, and a minimum number of light emitting elements is disposed in a region where the brightness is relatively high, thereby generating a display screen. There is an effect that can minimize the luminance imbalance.

Those skilled in the art through the above description will be capable of various changes and modifications without departing from the spirit of the present invention.

Claims (12)

A liquid crystal panel having a plurality of driving chips; And And a backlight unit in which a group of light sources are formed so as to correspond to a region where the driving chip is formed. The method of claim 1, The liquid crystal panel A top plate having a plurality of color filters; A lower plate having a plurality of switching elements; And a liquid crystal layer interposed between the upper plate and the lower plate. The method of claim 2, And the driving chip is disposed at an edge of the liquid crystal panel and formed on the lower plate. The method of claim 1, The backlight unit And a plurality of light emitting devices for emitting light, wherein the light emitting devices are arranged at predetermined intervals to form the light sources of the first group. The method of claim 4, wherein The backlight unit An optical member for changing a path of light emitted from the light sources of the first group and increasing the efficiency of the light; And a rear cover for supporting the optical member and the light emitting element. The method of claim 4, wherein And the light emitting device emits any one color of yellow, red, green, blue, and white. The method of claim 4, wherein The light emitting device is a liquid crystal display, characterized in that the self-light emitting device including a light emitting diode (LED), organic / inorganic EL. The method of claim 1, And the light sources of the first group are disposed in an area of uneven brightness to compensate for the brightness. An optical member for diffusing light, condensing light, and changing an optical path; And a plurality of light sources in a group by uniformly arranging a plurality of light emitting devices irradiating light to the optical member. The method of claim 9, The light emitting device is a backlight unit, characterized in that for emitting any one of yellow, red, green, blue, white. The method of claim 9, The light emitting device is a backlight unit, characterized in that the self-light emitting device including a light emitting diode (LED), organic / inorganic EL. The method of claim 9, An optical element guide on which the light emitting element is mounted and which transfers power to the light emitting element; And a rear cover for supporting the optical element guide and the optical member.

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