KR20190074848A - Liquid Crystal Display Device - Google Patents

Abstract

The present invention provides a liquid crystal display device including a liquid crystal panel, a backlight unit, a guide panel, and a fixing mechanism part. The liquid crystal panel displays an image. The backlight unit has a light source for emitting light from a lower part of the liquid crystal panel, and optical layers for transmitting the light emitted from the light source to the liquid crystal panel. The guide panel receives the liquid crystal panel and the backlight unit. The fixing mechanism part is attached and fixed to the guide panel, and presses and fixes at least one of the optical layers. Therefore, the present invention has an effect of preventing the movement or damage of components stored inside the guide panel even in an impact or a separate impact test which may occur when an assembled liquid crystal panel module is transported and vibrated.

Description

[0001] The present invention relates to a liquid crystal display device,

The present invention relates to a liquid crystal display device.

As the information technology is developed, the market of display devices, which is a connection medium between users and information, is getting larger. Accordingly, a flat panel display (FPD) such as a liquid crystal display (LCD), an organic light emitting diode (OLED) display and a plasma liquid crystal display (PDP) ) Have been increasing. Among them, liquid crystal display devices capable of realizing high resolution and capable of not only miniaturization but also enlargement are widely used.

A liquid crystal display device includes a liquid crystal panel and a backlight unit. The liquid crystal panel includes a transistor substrate on which a thin film transistor, a storage capacitor, a pixel electrode, and the like are formed, and a liquid crystal layer disposed between the color filter substrate and the color filter substrate on which the color filter and the black matrix are formed.

The backlight unit includes a light emitting diode (hereinafter referred to as an LED) for providing light to the liquid crystal panel and an LED substrate having an LED driver for driving the LED, a diffusion plate for diffusing light emitted from the LED, An optical sheet layer and the like.

The liquid crystal panel and the backlight unit are accommodated in the guide panel and are made of a liquid crystal panel module (assembly). However, a liquid crystal panel module (assembly) having a direct-type backlight unit in which a light source is disposed at a lower portion of the liquid crystal panel needs to be further improved in comparison with an edge type backlight unit in which a light source is disposed on a side of a liquid crystal panel Do.

The present invention for solving the above-mentioned problems of the related art is to provide a liquid crystal panel module (assembly) capable of realizing a narrow bezel, To prevent flow or damage of the components and to prevent defects due to foreign matter penetration.

The present invention provides a liquid crystal display device including a liquid crystal panel, a backlight unit, a guide panel, and a fixing mechanism. The liquid crystal panel displays an image. The backlight unit has a light source that emits light at the bottom of the liquid crystal panel and optical layers that transmit the light emitted from the light source to the liquid crystal panel. The guide panel houses the liquid crystal panel and the backlight unit. The fixture mechanism is attached and fixed to the guide panel and presses and holds at least one of the optical layers.

The guide panel includes a lower guide panel for accommodating the light source and an upper guide panel for accommodating the optical layers, and the fixing mechanism can be disposed on the supporting surface of the upper guide panel and the protruding portion protruding from the side wall surface.

The fixture mechanism portion can press one or both of the optical function layer and the optical sheet layer contained in the optical layers.

The fixing mechanism portion may include a first pressing portion for pressing the optical sheet layer and a second pressing portion for pressing the optical function layer.

The first pressing portion may be a thin plate type, and the second pressing portion may be a block type which is thicker than the first pressing portion.

The first pressing portion and the second pressing portion may be made of the same or different materials.

The fixing mechanism portion may further include a hole which is located in the first pressing portion and into which the inserted fixing portion is inserted.

The fixing mechanism portion may further include a latching portion which is adjacent to the hole and protrudes in the horizontal direction from the first pressing portion.

The hole can be recessed from the surface of the first pressing portion.

The fixing mechanism may be disposed on all two or four sides of the guide panel, or may be locally disposed on two or four sides of the guide panel.

The present invention has the effect of preventing the flow of or damage to the components stored in the guide panel even in the event of shocks or shocks that may occur during transportation and vibration of the assembled liquid crystal panel module (assembly). In addition, the present invention has the effect of preventing the foreign matter from being infiltrated into the narrow bezel and preventing and improving the mechanical failure due to the impact while enabling the implementation of narrow bezel.

1 is a block diagram schematically showing a liquid crystal display device.
Fig. 2 is a circuit diagram schematically showing the subpixel shown in Fig. 1. Fig.
3 is an exploded perspective view of a liquid crystal panel module.
4 is a view showing a state in which a liquid crystal panel and a cover glass are detached from an assembled liquid crystal panel module.
5 illustrates the PP region of FIG. 4 to illustrate a first embodiment of the present invention. FIG.
FIG. 6 is a detailed view of the fixing mechanism shown in FIG. 5 according to the first embodiment of the present invention; FIG.
Figs. 7 to 9 are diagrams illustrating examples of the arrangement of the fixing mechanism. Fig.
FIGS. 10 and 11 are cross-sectional views illustrating regions C1-C2 of FIG. 5 according to a first embodiment of the present invention;
FIGS. 12 and 13 are cross-sectional views illustrating regions D1-D2 of FIG. 5 according to a first embodiment of the present invention.
Figure 14 illustrates the PP region of Figure 4 to illustrate a second embodiment of the present invention.
Fig. 15 is a detailed view of the fixing mechanism shown in Fig. 14 according to the second embodiment of the present invention; Fig.
FIG. 16 is a cross-sectional view showing a region C1-C2 of FIG. 14 according to a second embodiment of the present invention;
17 is a cross-sectional view showing a region D1-D2 in Fig. 14 according to a second embodiment of the present invention.
18 is an exemplary view of a fixing part usable in the first and second embodiments of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The liquid crystal display device described below may be applied to a liquid crystal display device such as a TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS (In Plane Switching) mode, FFS And can be implemented in an ECB (Electrically Controlled Birefringence) mode.

The backlight unit and the liquid crystal display using the backlight unit described below can be used in various fields such as a portable computer such as a notebook PC, a monitor, an office automation equipment, an audio / video equipment, an indoor / outdoor advertisement display,

FIG. 2 is a circuit diagram schematically showing the subpixel shown in FIG. 1, FIG. 3 is an exploded perspective view of the liquid crystal panel module, and FIG. 4 is a cross- In which the liquid crystal panel and the cover glass are separated from each other.

1 and 2, the liquid crystal display device includes an image supply unit 110, a timing control unit 130, a gate driving unit 140, a data driving unit 150, a liquid crystal panel 160, a power supply unit 180, Backlight unit 170 is included.

The image supply unit 110 processes the data signal and outputs the image signal together with a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, a clock signal, and the like. The image supplying unit 110 supplies a vertical synchronizing signal, a horizontal synchronizing signal, a data enable signal, a clock signal, and a data signal to the timing controller 130 through a Low Voltage Differential Signaling (LVDS) interface or a TMDS (Transition Minimized Differential Signaling) .

The timing controller 130 outputs a gate timing control signal GDC for controlling the operation timing of the gate driver 140 and a data timing control signal DDC for controlling the operation timing of the data driver 150. [ The timing controller 130 performs image processing on the data signal DATA supplied from the image processing unit 110 together with the data timing control signal DDC and supplies the image signal to the data driver 150. [

The gate driver 140 outputs a gate signal in response to the gate timing control signal GDC supplied from the timing controller 130. The gate driver 140 supplies gate signals to the sub-pixels SP included in the liquid crystal panel 160 through the gate lines GL. The gate driver 140 is formed in the form of an integrated circuit (IC) or a gate in panel (LCD) panel.

The data driver 150 samples and latches the digital data signal DATA in response to the data timing control signal DDC supplied from the timing controller 130 and converts the sampled data signal into a gamma reference voltage, do. The data driver 150 inverts the polarity of the data voltage in one frame period. The data driver 150 supplies a data voltage (or a data signal) to the sub-pixels SP included in the liquid crystal panel 160 through the data lines SL. The data driver 150 is formed in the form of an IC (Integrated Circuit).

The power supply unit 180 generates and outputs a high potential voltage VCC, a low potential voltage GND, and a common voltage VCOM. The high potential voltage VCC and the low potential voltage GND are supplied to at least one of the timing controller 130, the gate driver 140 and the data driver 150. The common voltage VCOM is supplied to the liquid crystal panel 160. The common voltage VCOM is supplied to the subpixels SP through the common voltage line Vcom of the liquid crystal panel 160. [

The liquid crystal panel 160 displays an image corresponding to the gate signal supplied from the gate driver 140 and the data voltage supplied from the data driver 150. The liquid crystal panel 160 includes subpixels SP for controlling light provided through the backlight unit 170. [

One sub-pixel includes a switching transistor SW, a storage capacitor Cst, and a liquid crystal layer Clc. The gate electrode of the switching transistor SW is connected to the gate line GL1 and the source electrode thereof is connected to the data line SL1. One end of the storage capacitor Cst is connected to the drain electrode of the switching transistor SW and the other end is connected to the common voltage line Vcom. The liquid crystal layer Clc is formed between the pixel electrode 1 connected to the drain electrode of the switching transistor SW and the common electrode 2 connected to the common voltage line Vcom.

The backlight unit 170 provides light to the liquid crystal panel 160 using a light source or the like that emits light. The backlight unit 170 may vary the lighting time and the off time according to a pulse width modulation (PWM) signal.

The liquid crystal display device described above has been developed and released as a method of adding white subpixels in addition to red subpixels, green subpixels, and blue subpixels (hereinafter, RGBW type liquid crystal display device). The RGBW type liquid crystal display device can increase the brightness of the liquid crystal panel using the white subpixel, thereby reducing the brightness of the backlight unit 170 and reducing power consumption.

As shown in FIGS. 3 and 4, the backlight unit 170 and the liquid crystal panel 160 have a structure accommodated in the guide panel 177. The guide panel 177 has a display area AA in which the image displayed on the liquid crystal panel 160 is displayed and a non-display area NA in which the image is not displayed. The liquid crystal panel 160 mounted on the guide panel 177 is protected by a cover glass 165. 3, the lower guide panel 177a and the upper guide panel 177b are separated from each other to show an internal configuration in the form of an exploded perspective view, and both configurations are integrally formed.

The lower guide panel 177a houses a metal cover layer 171, a light emitting diode (LED) 173, an LED substrate 172 on which the LED driver is mounted, and the like. The metal cover layer 171 releases heat generated from the LED substrate 172 while closing the lower guide panel 177a. The LED substrate 172 emits light at a lower portion of the liquid crystal panel 160.

An optical function layer 175, an optical sheet layer 176, a liquid crystal panel 160, a cover glass 165, and the like are accommodated in the upper guide panel 177b. The optically functional layer 175 guides or diffuses the light emitted from the LED. The optical function layer 175 may be selected as a light guide plate or a diffusion layer (diffusion plate). The optical sheet layer 176 is composed of sheets having one or more different structures and functions in order to produce an optical effect such as condensing and diffusing the light emitted from the optical function layer 175.

When the liquid crystal panel 160 and the backlight unit 170 are housed and assembled into a module (assembly) in the guide panel 177, the optical functional layer 175 and the optical sheet layer 176 flow And the like. Particularly, the optical function layer 175 and the optical sheet layer 176 are kept in contact with and fixed to the inner structure of the guide panel 177 to prevent upward flow, Quot; PP "area.

≪ Embodiment 1 >

FIG. 5 is a view showing the PP area in FIG. 4 for explaining the first embodiment of the present invention, FIG. 6 is a detailed view of the fixing mechanism shown in FIG. 5 according to the first embodiment of the present invention, 7 to Fig. 9 are examples of arrangement of the fixing mechanism.

As shown in FIGS. 5 and 6, according to the first embodiment of the present invention, a fixing mechanism 190 is disposed on the upper outer side of the guide panel 177. The fixing mechanism unit 190 serves to press and fix the components disposed inside the guide panel 177 so that they do not flow. The fixing mechanism portion 190 includes a first pressing portion 190a, a second pressing portion 190b, a locking portion 190c, a groove HM and a hole HOL.

The first pressing portion 190a and the second pressing portion 190b serve to press and fix the components stored in the guide panel 177. [ The first pressing portion 190a and the second pressing portion 190b press and fix different components. The first pressing portion 190a is formed in a thin plate shape and the second pressing portion 190b is formed in a thicker block type than the first pressing portion 190a. The first pressing portion 190a and the second pressing portion 190b may be made of the same material or different materials. For example, the first pressing portion 190a may be selected from metal or plastic, and the second pressing portion 190b may be selected from plastic or rubber.

The latching portion 190c protrudes in the horizontal direction from the first pressing portion 190a. The latching part 190c may be formed at the center of the first pressing part 190a. The engaging portion 190c serves to fix the fixing mechanism portion 190 in such a manner as to be engaged with the groove 177c provided in the guide panel 177. [ The engaging portion 190c serves also to enhance the alignment and fastening force between the guide panel 177 and the fixing mechanism portion 190. [

The hole (HOL) serves to provide a through hole so that the fixing mechanism portion (190) and the guide panel (177) are tightly fixed by the inserted fixing portion (SCW). The hole HOL (or the hole and its periphery) is formed in the first pressing portion 190a and depressed at a certain portion in the direction (downward direction) of the second pressing portion 190b. Since the hole HOL is depressed from the surface of the first pressing part 190a, the hole HOL is depressed when viewed from the upper surface of the first pressing part 190a, but protruded from the back surface. The recessed hole (HOL) provides a space for preventing the inserted fixing portion (SCW) from protruding onto the upper surface of the first pressing portion (190a). The hole HOL and the engaging portion 190c may be adjacent to each other.

The groove HM serves as a fixing groove to which the second pressing portion 190b can be attached and fixed to the back surface of the first pressing portion 190a. The grooves HM may be formed in the first pressing portion 190a and disposed one on the other side with respect to the hole HOL. The groove HM may be provided when the first pressing portion 190a and the second pressing portion 190b are formed of a different material and are formed by a dual injection method.

As shown in Fig. 7, the fixing mechanism portion 190 may be arranged to correspond to all four sides of the guide panel 177. As shown in Fig. As shown in Fig. 8, the fixing mechanism portion 190 may be disposed on two sides of the guide panel 177 to correspond to the whole. As shown in FIG. 9, the fixing mechanism portion 190 may be locally disposed on at least one or two sides of two or four sides of the guide panel 177.

FIGS. 10 and 11 are cross-sectional views showing regions C1-C2 of FIG. 5 according to a first embodiment of the present invention, and FIGS. 12 and 13 are views showing regions D1-D2 of FIG. 5 according to a first embodiment of the present invention. Fig.

As shown in FIGS. 10 to 13, the guide panel 177 is integrally formed, but can be divided into a lower guide panel 177a and an upper guide panel 177b on the basis of a structure for supporting and storing the guide panel 177. FIG.

The lower guide panel 177a includes a first support surface PCH1, an inner inclined surface PCH2, and a first inner side wall PCH4. The first support surface PCH1 serves to support the metal cover layer 171, the LED substrate 172 and the reflection plate 174 housed in the lower guide panel 177a.

The inner inclined surface PCH2 serves to provide an inclined surface between the first support surface PCH1 and the first inner side wall PCH4. The inner inclined plane PCH2 may have an inclination corresponding to the inclined portion of the reflection plate 174 that is seated on the top of the first support surface PCH1, but is not limited thereto.

The first inner side wall PCH4 serves to provide a height such that the first support surface PCH1 and the second support surface PCH4 are spaced apart from each other by a predetermined height. The first inner side wall PCH4 is not limited to the drawing shown and may have a lower height.

The upper guide panel 177b includes a second support surface PCH4, a second inner side wall PCH5, a third support surface PCH7, a third inner side wall PCH6 and a fourth support surface PCH8. The second support surface PCH4 serves to support the optical function layer 175 and the optical sheet layer 176 accommodated in the upper guide panel 177b. The second support surface PCH4 is wider than the first support surface PCH1 to support the optical function layer 175 and the optical sheet layer 176 that are larger than the metal cover layer 171 and the LED substrate 172. [ Width.

The second inner sidewall PCH5 serves to provide a height such that the second support surface PCH4 and the third support surface PCH7 are spaced apart with a certain height. The second inner side wall PCH5 may have a height enough to accommodate the optical function layer 175, the optical sheet layer 176, and the liquid crystal panel 160. [

The third inner sidewall PCH6 and the third support surface PCH7 serve to provide protruding protrusions or protruding structures so that the fixing mechanism portion 190 is seated and fixed. The third inner side wall PCH6 and the third support face PCH7 protrude from the second inner side wall PCH5 and the second support face PCH4 in the direction of the optical function layer 175 or the liquid crystal panel 160 do. The third inner side wall PCH6 includes a fixing groove FH into which the fixing portion SCW is inserted.

The fourth support surface PCH8 serves to support the cover glass 165. [ The fourth support surface PCH8 can directly support the backside of the cover glass 165 or indirectly support the backside of the cover glass 165 via the resin layer 163 as shown.

The guide panel 177 minimizes the unnecessary structure with the above-described structure, thereby realizing the narrow bezel of the liquid crystal display device.

A liquid crystal panel 160 is disposed on the rear surface of the cover glass 165. The liquid crystal panel 160 may be attached to the back surface of the cover glass 165 via the high permeability adhesive 164. The polarizing film layers 161 and 162 are attached to the lower surface and the upper surface of the liquid crystal panel 160, respectively. Therefore, the high-permeability pressure-sensitive adhesive 164 is positioned between the cover glass 165 and the upper polarizing film layer 162 attached to the upper surface of the liquid crystal panel 160. The high-permeability pressure-sensitive adhesive 164 may have a size corresponding to the display area AA of the liquid crystal panel 160, but is not limited thereto.

A foam pad 167 is located in the non-display area NA of the liquid crystal panel 160. The foam pad 167 is located at one end of the rear surface of the liquid crystal panel 160. The foam pad 167 is disposed between the back surface of the liquid crystal panel 160 and the upper surface of the first pressing portion 190a of the fixing mechanism portion 190. [ The foam pad 167 supports the liquid crystal panel 160 and forms a space between the liquid crystal panel 160 and the optical sheet layer 176 located below the liquid crystal panel 160. In addition, .

The foam pad 167 may be arranged to correspond to all four sides of the guide panel 177 like the fixing mechanism part 190. The foam pads 167 may be arranged on two sides of the guide panel 177 as a whole or on at least one or two sides of two or four sides of the guide panel 177. The foam pad 167 serves to cut off the light leakage in a part constituting the backlight unit such as the optical sheet layer 176. To this end, the foam pad 167 includes a material that can block light, such as opaque material or black.

Hereinafter, the fixing mechanism 190 and the related structure and effects thereof will be described.

The fixing mechanism portion 190 is located in the non-display area NA. The fixing mechanism portion 190 is seated on the third supporting surface PCH7 and fixed by the fixing portion SCW. The second pressing portion 190b of the fixing mechanism portion 190 is fixed by pressing the upper surface of the optical function layer 175 as in P1 of Fig. On the other hand, the first pressing portion 190a of the fixing mechanism portion 190 is fixed by pushing the upper surface of the optical sheet layer 176 as shown by P2 in Fig.

The optical function layer 175 pressed by the second pressing portion 190b of the fixing mechanism portion 190 is thicker and heavier than the optical sheet layer 176. [ Therefore, although the first pressing portion 190a is formed in a plate-like shape having a thin thickness, the second pressing portion 190b is configured as a thicker block type than the first pressing portion 190a.

The first pressing portion 190a of the fixing mechanism portion 190 is disposed in a narrow space such as between the optical sheet layer 176 and the lower polarizing film layer 161 and thus has a thin thickness. The second pressing portion 190b of the fixing mechanism portion 190 not only has a function of pressing and fixing a heavy material like the optical function layer 175 but also has a function of fixing the first pressing portion 190a of the fixing mechanism portion 190 to a thin thickness It also plays a role as a complement to the mechanical weakness caused by. In addition, the foam pad 167 disposed at the first pressing portion 190a of the fixing mechanism portion 190 may deform (warp) the fixing mechanism portion 190 in addition to the foreign matter penetration and the light shielding function, as shown at P3 in FIG. It also acts as a pressing force to relax.

As described above, when the fixing mechanism unit 190 and the foam pad 167 are provided, even when the assembled liquid crystal panel module is subjected to shocks or other shock tests that may occur during transportation and vibration, It is possible to prevent the flow or damage of the fuel cell. That is, the present invention has a structure capable of preventing and improving not only a foreign matter defect due to foreign matter infiltration but also mechanical defects due to impact.

On the other hand, in the section C1-C2 of Figs. 10 and 11, although the first pressing portion 190a and the second pressing portion 190b are identified together, in the D1-D2 section of Figs. 12 and 13, The first pressing portion 190a, the third inside wall PCH6, the third supporting surface PCH7, and the fixing portion SCW are identified. The reason for this is as follows.

The second pressing portion 190b is in a state of being attached to the back surface of the first pressing portion 190a away from the hole portion into which the fixing portion SCW is inserted. The third inner side wall PCH6 and the third support surface PCH7 protrude from the second inner side wall PCH5 and the second support surface PCH4 corresponding to the hole portion into which the fixing portion SCW is inserted to be. That is, the third inner side wall PCH6 and the third support surface PCH7 are locally provided. Therefore, it is to be noted that the above-mentioned reason is that the configuration of the fixture mechanism 190 and the configuration related to the cross section of C1-C2 and the cross section of D1-D2 are different.

≪ Embodiment 2 >

FIG. 14 is a view showing a PP area in FIG. 4 to explain a second embodiment of the present invention, and FIG. 15 is a detailed view of the fixing mechanism shown in FIG. 14 according to a second embodiment of the present invention.

As shown in FIGS. 14 and 15, according to the second embodiment of the present invention, the fixing mechanism 190 is disposed on the outer periphery of the guide panel 177. The fixing mechanism unit 190 serves to press and fix the components disposed inside the guide panel 177 so that they do not flow. The fixing mechanism portion 190 includes a first pressing portion 190a, a second pressing portion 190b, a groove HM and a hole HOL.

The first pressing portion 190a and the second pressing portion 190b serve to press and fix the components stored in the guide panel 177. [ The first pressing portion 190a and the second pressing portion 190b press and fix different components. The first pressing portion 190a is formed in a thin plate shape and the second pressing portion 190b is formed in a thicker block type than the first pressing portion 190a. The first pressing portion 190a and the second pressing portion 190b may be made of the same material or different materials. For example, the first pressing portion 190a may be selected from metal or plastic, and the second pressing portion 190b may be selected from plastic or rubber.

The hole (HOL) serves to provide a through hole so that the fixing mechanism portion (190) and the guide panel (177) are tightly fixed by the inserted fixing portion (SCW). The hole HOL may be located at the center of the first pressing portion 190a. The groove HM serves as a fixing groove to which the second pressing portion 190b can be attached and fixed to the back surface of the first pressing portion 190a. The grooves HM may be formed in the first pressing portion 190a and disposed one on the other side with respect to the hole HOL. The groove HM may be provided when the first pressing portion 190a and the second pressing portion 190b are formed of a different material and are formed by a dual injection method.

The fixing mechanism portion 190 according to the second embodiment may also be arranged so as to correspond to all two or four sides of the guide panel 177 or at least one or two locally disposed on two or four sides of the guide panel 177 .

FIG. 16 is a cross-sectional view illustrating a region C1-C2 of FIG. 14 according to a second embodiment of the present invention, and FIG. 17 is a cross-sectional view of a region D1-D2 of FIG. 14 according to a second embodiment of the present invention.

As shown in FIGS. 16 and 17, the guide panel 177 is integrally formed, but can be divided into a lower guide panel 177a and an upper guide panel 177b on the basis of a structure for supporting and storing the guide panel 177. FIG.

The lower guide panel 177a includes a first support surface PCH1, an inner inclined surface PCH2, and a first inner side wall PCH4. The first support surface PCH1 serves to support the metal cover layer 171, the LED substrate 172 and the reflection plate 174 housed in the lower guide panel 177a.

The inner inclined surface PCH2 serves to provide an inclined surface between the first support surface PCH1 and the first inner side wall PCH4. The inner inclined plane PCH2 may have an inclination corresponding to the inclined portion of the reflection plate 174 that is seated on the top of the first support surface PCH1, but is not limited thereto.

The first inner side wall PCH4 serves to provide a height such that the first support surface PCH1 and the second support surface PCH4 are spaced apart from each other by a predetermined height. The first inner side wall PCH4 is not limited to the drawing shown and may have a lower height.

The upper guide panel 177b includes a second support surface PCH4, a second inner side wall PCH5, a third support surface PCH7, a third inner side wall PCH6 and a fourth support surface PCH8. The second support surface PCH4 serves to support the optical function layer 175 and the optical sheet layer 176 accommodated in the upper guide panel 177b. The second support surface PCH4 is wider than the first support surface PCH1 to support the optical function layer 175 and the optical sheet layer 176 that are larger than the metal cover layer 171 and the LED substrate 172. [ Width.

The second inner sidewall PCH5 serves to provide a height such that the second support surface PCH4 and the third support surface PCH7 are spaced apart with a certain height. The second inner side wall PCH5 may have a height enough to accommodate the optical function layer 175, the optical sheet layer 176, and the liquid crystal panel 160. [

The third inner sidewall PCH6 and the third support surface PCH7 serve to provide protruding protrusions or protruding structures so that the fixing mechanism portion 190 is seated and fixed. The third inner side wall PCH6 and the third support face PCH7 protrude from the second inner side wall PCH5 and the second support face PCH4 in the direction of the optical function layer 175 or the liquid crystal panel 160 do. The third inner side wall PCH6 includes a fixing groove FH into which the fixing portion SCW is inserted.

The fourth support surface PCH8 serves to support the cover glass 165. [ The fourth support surface PCH8 can directly support the backside of the cover glass 165 or indirectly support the backside of the cover glass 165 via the resin layer 163 as shown.

A liquid crystal panel 160 is disposed on the rear surface of the cover glass 165. The liquid crystal panel 160 may be attached to the back surface of the cover glass 165 via the high permeability adhesive 164. The polarizing film layers 161 and 162 are attached to the lower surface and the upper surface of the liquid crystal panel 160, respectively. Therefore, the high-permeability pressure-sensitive adhesive 164 is positioned between the cover glass 165 and the upper polarizing film layer 162 attached to the upper surface of the liquid crystal panel 160. The high-permeability pressure-sensitive adhesive 164 may have a size corresponding to the display area AA of the liquid crystal panel 160, but is not limited thereto.

A foam pad 167 is located in the non-display area NA of the liquid crystal panel 160. The foam pad 167 is located at one end of the rear surface of the liquid crystal panel 160. The foam pad 167 is disposed between the back surface of the liquid crystal panel 160 and the upper surface of the first pressing portion 190a of the fixing mechanism portion 190. [ The foam pad 167 supports the liquid crystal panel 160 and forms a space between the liquid crystal panel 160 and the optical sheet layer 176 located below the liquid crystal panel 160. In addition, .

The foam pad 167 may be arranged to correspond to all four sides of the guide panel 177 like the fixing mechanism part 190. The foam pads 167 may be arranged on two sides of the guide panel 177 as a whole or on at least one or two sides of two or four sides of the guide panel 177. The foam pad 167 serves to cut off the light leakage in a part constituting the backlight unit such as the optical sheet layer 176. To this end, the foam pad 167 includes a material that can block light, such as opaque material or black.

Hereinafter, the fixing mechanism 190 and the related structure and effects thereof will be described.

The fixing mechanism portion 190 is located in the non-display area NA. The fixing mechanism portion 190 is seated on the third supporting surface PCH7 and fixed by the fixing portion SCW. The second pressing portion 190b of the fixing mechanism portion 190 is fixed by pressing the upper surface of the optical function layer 175. [ On the other hand, the first pressing portion 190a of the fixing mechanism portion 190 presses the upper surface of the optical sheet layer 176 and is fixed.

The optical function layer 175 pressed by the second pressing portion 190b of the fixing mechanism portion 190 is thicker and heavier than the optical sheet layer 176. [ Therefore, although the first pressing portion 190a is formed in a plate-like shape having a thin thickness, the second pressing portion 190b is configured as a thicker block type than the first pressing portion 190a.

The first pressing portion 190a of the fixing mechanism portion 190 is disposed in a narrow space such as between the optical sheet layer 176 and the lower polarizing film layer 161 and thus has a thin thickness. The second pressing portion 190b of the fixing mechanism portion 190 not only has a function of pressing and fixing a heavy material like the optical function layer 175 but also has a function of fixing the first pressing portion 190a of the fixing mechanism portion 190 to a thin thickness It also plays a role as a complement to the mechanical weakness caused by. In addition, the foam pad 167 disposed at the first pressing portion 190a of the fixing mechanism portion 190 functions to prevent foreign matter penetration and light leakage as well as to relieve deformation (warping) of the fixing mechanism portion 190 As well.

As described above, when the fixing mechanism unit 190 and the foam pad 167 are provided, even when the assembled liquid crystal panel module is subjected to shocks or other shock tests that may occur during transportation and vibration, It is possible to prevent the flow or damage of the fuel cell. Further, the present invention has a structure capable of preventing and improving mechanical failure due to impact as well as foreign matter caused by foreign matter penetration.

18 is an exemplary view of a fixing part usable in the first and second embodiments of the present invention.

As shown in Fig. 18 (a), the fixing portion SCW can be selected as a threaded screw that can be fastened with a screwdriver or the like, or a pinned screw having a fastening portion that is pressed by a hand or a driver as shown in Fig. 18 (b) However, this is only one example, and the present invention is not limited thereto.

As described above, the present invention has the effect of preventing the flow of or damage to the components stored in the guide panel, even in the event of shocks or shocks that may occur during transportation and vibration of the assembled liquid crystal panel module. In addition, the present invention has the effect of preventing the foreign matter from being infiltrated into the narrow bezel and preventing and improving the mechanical failure due to the impact while enabling the implementation of narrow bezel.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. In addition, the scope of the present invention is indicated by the following claims rather than the detailed description. Also, all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

170: backlight unit 160: liquid crystal panel
177: guide panel 165: cover glass
175: Optical function layer 176: Optical sheet layer
190: Fixing mechanism part 167: Foam pad
FH: Fixing groove SCW: Fixing part
HOL: Hole

Claims (10)

A liquid crystal panel for displaying an image;
A backlight unit having a light source for emitting light at a lower portion of the liquid crystal panel and optical layers for transmitting light emitted from the light source to the liquid crystal panel;
A guide panel for accommodating the liquid crystal panel and the backlight unit; And
And a fixture mechanism attached and fixed to the guide panel and configured to press and fix at least one of the optical layers. The method according to claim 1,
The guide panel
A lower guide panel for accommodating the light source,
And an upper guide panel for accommodating the optical layers,
Wherein the fixing mechanism portion is disposed in a protruding portion protruding from a supporting surface and a side wall surface of the upper guide panel. The method according to claim 1,
The fixing mechanism
And one or both of the optical function layer and the optical sheet layer contained in the optical layers are pressed. The method of claim 3,
The fixing mechanism
A first pressing portion for pressing the optical sheet layer,
And a second pressing portion for pressing the optical function layer. 5. The method of claim 4,
The first pressing portion is thin plate-
Wherein the second pressing portion is thicker than the first pressing portion. 5. The method of claim 4,
The first pressing part and the second pressing part
A liquid crystal display comprising a homogeneous or heterogeneous material. 5. The method of claim 4,
The fixing mechanism
And a hole located in the first pressing portion and fitted in the inserted fixing portion. 8. The method of claim 7,
The fixing mechanism
And a latching portion projecting in a horizontal direction from the first pressing portion adjacent to the hole. 8. The method of claim 7,
The hole
Wherein the first pressing portion is recessed from the surface of the first pressing portion. The method according to claim 1,
The fixing mechanism
The guide panel may be disposed on all two or four sides of the guide panel,
Wherein the guide panel is disposed locally on two or four sides of the guide panel.

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