`US 20070171353Al
`
`c19) United States
`c12) Patent Application Publication
`Hong
`
`c1O) Pub. No.: US 2007 /0171353 Al
`Jul. 26, 2007
`(43) Pub. Date:
`
`(54) LIQUID CRYSTAL DISPLAY DEVICE
`
`(30)
`
`Foreign Application Priority Data
`
`(75)
`
`Inventor:
`
`Hee-Jung Hong, Seoul (KR)
`
`Correspondence Address:
`BRINKS HOFER GILSON & LIONE
`P.O. BOX 10395
`CHICAGO, IL 60610
`
`(73) Assignee:
`
`LG PHILIPS LCD CO., LTD.
`
`(21) Appl. No.:
`
`11/638,210
`
`(22) Filed:
`
`Dec. 13, 2006
`
`(KR) ............... 2006-006321
`Jan. 20, 2006
`Publication Classification
`
`(51)
`
`Int. Cl.
`G02F 111333
`(2006.01)
`(52) U.S. Cl. .......................................... 349/161; 349/58
`ABSTRACT
`(57)
`
`A liquid crystal display (LCD) device includes a backlight
`assembly with a light source between a liquid crystal panel
`and a bottom. A heat sink is disposed on the bottom case to
`irradiate heat out of the liquid crystal display device. The
`heat sink may be located where the heat is accumulated by
`thermal convection, or near the top of the LCD device.
`
`120
`
`162
`
`SEC et al. v. MRI
`SEC Exhibit 1006.001
`IPR 2023-00199
`
`
`
`Patent Application Publication
`
`Jul. 26, 2007 Sheet 1 of 5
`
`US 2007/0171353 Al
`
`FIG. 1
`RELATED ART
`
`20
`
`SEC et al. v. MRI
`SEC Exhibit 1006.002
`IPR 2023-00199
`
`
`
`Patent Application Publication
`
`Jul. 26, 2007 Sheet 2 of 5
`
`US 2007/0171353 Al
`
`FIG. 2
`RELATED ART
`16
`
`70
`
`Viewer~.
`
`SEC et al. v. MRI
`SEC Exhibit 1006.003
`IPR 2023-00199
`
`
`
`Patent Application Publication
`
`Jul. 26, 2007 Sheet 3 of 5
`
`US 2007/0171353 Al
`
`FIG. 3
`
`160
`
`120
`
`162
`
`SEC et al. v. MRI
`SEC Exhibit 1006.004
`IPR 2023-00199
`
`
`
`Patent Application Publication
`
`Jul. 26, 2007 Sheet 4 of 5
`
`US 2007/0171353 Al
`
`FIG. 4
`
`162
`
`Viewer
`
`·132.::::------::..-+1-
`
`130 : .. --· · --++-
`
`·140
`
`· 116
`
`SEC et al. v. MRI
`SEC Exhibit 1006.005
`IPR 2023-00199
`
`
`
`Patent Application Publication
`
`Jul. 26, 2007 Sheet 5 of 5
`
`US 2007/0171353 Al
`
`FIG. 5
`
`260
`
`262
`
`220
`
`SEC et al. v. MRI
`SEC Exhibit 1006.006
`IPR 2023-00199
`
`
`
`US 2007/0171353 Al
`
`Jul. 26, 2007
`
`LIQUID CRYSTAL DISPLAY DEVICE
`
`[0001] The present invention claims the benefit of Korean
`Patent Application No. 2006-006321, filed in Korea on Jan.
`21, 2006, which is hereby incorporated by reference.
`
`TECHNICAL FIELD
`
`[0002] The present application relates to a liquid crystal
`display device.
`
`BACKGROUND
`
`[0003] Display devices have traditionally used cathode(cid:173)
`ray tubes (CRT). Presently, much effort has been made to
`study and develop various types of flat panel displays, such
`as liquid crystal display (LCD) devices, plasma display
`panels (PDP), field emission displays, and electro-lumines(cid:173)
`cence displays (ELD), as a substitute for CRT displays. LCD
`devices have certain advantages over the other displays,
`such as high resolution, light weight, thin profile, compact
`size, and low power supply requirements.
`[0004] Generally, an LCD device includes two substrates
`that are spaced apart and face one another with a liquid
`crystal material disposed between the two substrates. The
`two substrates include electrodes that face each other. A
`voltage applied between the electrodes induces an electric
`field across the liquid crystal material. Aligmnent of the
`liquid crystal molecules in the liquid crystal material
`changes in accordance with the intensity of the induced
`electric field, thereby changing the light transmissivity of the
`LCD device. Thus, the LCD device displays images by
`varying the intensity of the induced electric field.
`[0005] Because the LCD device is a non-emissive type
`display device, a backlight is needed to supply the non(cid:173)
`emissive type display device with light. A CCFL ( cold
`cathode fluorescent lamp) or an EEFL ( external electrode
`fluorescent lamp) may be used. Recently, a LED (light
`emitting diode) has been used because of it's small size, low
`power consumption and high reliability.
`[0006] FIG. 1 is an exploded perspective view illustrating
`an LCD device using an LED according to the related art. In
`the related art LCD module as shown in FIG. 1, a backlight
`assembly 20 and a liquid crystal panel 10 are sequentially
`disposed over a bottom case 50. A main supporter 40 has a
`rectangular frame shape and supports the backlight assembly
`20 and the liquid crystal panel 10. The main supporter 40
`may be combined with the bottom case 50.
`[0007] Gate and source printed circuit board (PCB) 18 and
`16 are connected to the liquid crystal panel 10 through a
`flexible printed circuit (FPC) film. A top cover 60 is disposed
`on the top of the liquid crystal panel 10. As shown, the top
`cover 60 has a rectangular frame shape. The top cover 60
`presses and fixes a peripheral portion of the liquid crystal
`panel 10 and is combined with the main supporter 40 and the
`bottom case 50.
`[0008] The backlight assembly 20 includes a plurality of
`LEDs 24, a reflecting sheet 26, a light guide plate 30, and
`optical sheets 32 such as a prism sheet and/or a diffusion
`sheet. The LEDs 24 are arranged on a plurality of a base
`PCBs (metal core printed circuit boards) 22. The base PCBs
`22 are arranged in parallel on the bottom case 50. The
`reflecting sheet 26 has a plurality of through holes 28. The
`through holes 28 correspond to the LEDs 24. The light guide
`
`plate 30 has a plurality ofreflecting dots 31. The reflecting
`dots 31 also correspond to the LEDs 24 or the through holes
`28. The optical sheets 32 are spaced apart from the light
`guide plate 30. The optical sheets 32 condense and diffuse
`light passing through the light guide plate 30.
`[0009] A viewer generally watches the LCD device in a
`standing state, as illustrated in FIG. 2. FIG. 2 is a cross(cid:173)
`sectional view taken along a line II-II of FIG. 1. The LCD
`device of FIG. 2 is shown standing vertically to a ground for
`viewer's convenience. With respect to the standing LCD
`device, the gate PCB (18 of FIG. 1) is disposed at a side
`portion of the LCD device, and a source PCB 16 is disposed
`at a top portion of the LCD device as shown in FIG. 2. A
`control PCB 70 having a timing controller is connected to
`the source PCB 16. The control PCB 70 generates control
`signals for the gate PCB and the source PCB 16 and supplies
`data signals to the source PCB 16. The control PCB 70 is
`disposed at an upper portion of the standing LCD device.
`[001 OJ The LEDs 24 consume power to generate light, and
`thus much heat is produced at the LEDs 24. The LEDs 24
`may require a substantial amount of power to generate
`enough light. The heat is accumulated at the upper portion
`of the standing LCD device by a thermal convention.
`Accordingly, liquid crystal molecules at the upper portion of
`the standing LCD device may become deteriorated and/or
`abnormally arranged. Further, driving circuits, such as the
`source PCB 16 and the control PCB 70, at the upper portion
`of the standing LCD device may be abnormally operated
`based on the effects from the heat.
`[0011] To resolve these problems, a heat sink 62 may be
`attached on a rear surface of the bottom case 50. However,
`because the heat sink 62 is attached on the rear surface of the
`bottom, it may be difficult to radiate the heat that is accu(cid:173)
`mulated at the upper portion. Further, because the heat sink
`62 has a basic body and a plurality of pins that protrude from
`the basic body, the LCD device may have an increased
`thickness due to the presence of the heat sink 62.
`
`SUMMARY
`
`[0012] Accordingly, the present disclosure is directed to a
`liquid crystal display device that substantially obviates one
`or more of problems due to limitations and disadvantages of
`the related art. By way of introduction, the display device
`includes a heat sink located on the device to effectively
`irradiate heat outside that has accumulated through thermal
`convection. Accordingly, a heat sink may be positioned near
`the top of the display device to irradiate the heat that rises
`and accumulates near the top of the device.
`[0013]
`In a first aspect, a liquid crystal display device
`includes a backlight assembly disposed adjacent a liquid
`crystal panel and a bottom case. The backlight assembly
`includes a light source. The device includes a heat sink
`including a first part and a second part. The first part of the
`heat sink is disposed adjacent to a top portion of the liquid
`crystal display device, and the second part is disposed
`adjacent to an upper portion of the liquid crystal display
`device.
`[0014]
`In a second aspect, a liquid crystal display device
`includes a backlight assembly disposed between a liquid
`crystal panel and a bottom case. The backlight assembly
`includes a light source. The device includes a heat sink
`configured to irradiate heat produced at the light source. The
`heat is irradiated outside the liquid crystal display device. A
`
`SEC et al. v. MRI
`SEC Exhibit 1006.007
`IPR 2023-00199
`
`
`
`US 2007/0171353 Al
`
`Jul. 26, 2007
`
`2
`
`driving circuit is configured to operate the liquid crystal
`panel. The driving circuit disposed at a lower portion of the
`liquid crystal display device.
`[0015]
`In a third aspect, a liquid crystal display device
`includes a backlight assembly coupled with a liquid crystal
`panel and a bottom case. The backlight assembly includes at
`least one light source. A heat sink is disposed on the liquid
`crystal display device where heat produced at the light
`source is accumulated by a thermal convection. A driving
`circuit is disposed on the liquid crystal display device at a
`position different from where the heat is accumulated and
`the heat sink is disposed.
`[0016]
`In a fourth aspect, a liquid crystal display device
`includes a liquid crystal panel and a bottom case coupled
`with the liquid crystal panel. A backlight assembly is
`coupled with the liquid crystal panel and the bottom case.
`The backlight assembly comprises a light source. A heat sink
`is disposed on an upper portion of the bottom case. The heat
`sink is coupled with a top of the bottom case and a back of
`the bottom case.
`[0017]
`In a fifth aspect, a liquid crystal display device
`includes a display panel and a backlight assembly coupled
`with the display panel. The backlight assembly includes a
`light source for the display panel. A bottom case is coupled
`with the backlight assembly. A heat sink is coupled with the
`bottom case. The heat sink is disposed on an area of the
`bottom case where thermal convection causes an accumu(cid:173)
`lation of heat. A driving circuit is configured to drive the
`display panel and disposed on an area of the bottom case
`opposite from the heat sink.
`[0018] Other systems, methods, features and advantages
`will be, or will become, apparent to one with skill in the art
`upon examination of the following figures and detailed
`description. It is intended that all such additional systems,
`methods, features and advantages be included within this
`description, be within the scope of the invention, and be
`protected by the following claims and be defined by the
`following claims. Nothing in this section should be taken as
`a limitation on those claims. Further aspects and advantages
`are discussed below in conjunction with the preferred
`embodiments.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0019] The system may be better understood with refer(cid:173)
`ence to the following drawings and description. Non-limit(cid:173)
`ing and non-exhaustive embodiments are described with
`reference to the following drawings. The components in the
`figures are not necessarily to scale, emphasis instead being
`placed upon illustrating the principles of the invention. In
`the figures, like referenced numerals designate correspond(cid:173)
`ing parts throughout the different views.
`[0020] FIG. 1 is an exploded perspective view illustrating
`an LCD device using an LED according to the related art;
`[0021] FIG. 2 is a cross-sectional view taken along a line
`II-II of FIG. 1 according to the related art;
`[0022] FIG. 3 is an exploded perspective view illustrating
`an LCD device using an LED according to an exemplary
`embodiment;
`[0023] FIG. 4 is a cross-sectional view taken along a line
`IV-IV of FIG. 3 of an exemplary embodiment; and
`
`[0024] FIG. 5 is an exploded perspective view illustrating
`an LCD device using a lamp according to another exemplary
`embodiment.
`
`DETAILED DESCRIPTION OF THE
`PREFERRED EMBODIMENTS
`
`[0025] Exemplary embodiments may be better understood
`with reference to the drawings, but these examples are not
`intended to be of a limiting nature. PIG. 3 is an exploded
`perspective view illustrating an LCD device using an LED
`according to an exemplary embodiment. In the LCD device
`according to the exemplary embodiment shown in FIG. 3, a
`backlight assembly 120 and a liquid crystal panel 110 may
`be disposed over an inner surface of a bottom case 150. A
`bottom case 150 may be made of metal or other substance
`having a high thermal conductivity.
`[0026] A main supporter 140 has a rectangular frame
`shape and supports the backlight assembly 120 and the
`liquid crystal panel 110. Alternatively, the main supporter
`140 may be in a shape other than a rectangle. The main
`supporter 140 is coupled with the bottom case 150. Herein,
`the phrase "coupled with" is defined to mean directly
`connected to or indirectly connected through one or more
`intermediate components. Such intermediate components
`may include both hardware and software based components.
`[0027] Gate and source PCBs 118 and 116 are connected
`to the liquid crystal panel 110. The gate and source PCBs
`118 and 116 may be connected to the liquid crystal panel 110
`through an FPC film. In one embodiment, the gate PCB 118
`may supply gate signals to gate lines (not shown) in the
`liquid crystal panel 110, and the source PCB 116 may supply
`data signals to data lines (not shown) in the liquid crystal
`panel 110. The source PCB 116 may be disposed opposite to
`the source PCB as is shown in the related art.
`[0028] A top cover 160 is disposed on a front surface of
`the LCD panel. The top cover 160 has a rectangular frame
`shape or other shape similar to the main supporter 140. The
`top cover 160 presses and fixes a peripheral portion of the
`liquid crystal panel 110 and is combined with the main
`supporter 140 and the bottom case 150.
`[0029] The backlight assembly 120 includes a plurality of
`LEDs 124, a reflecting sheet 126, a light guide plate 130, and
`optical sheets 132 such as a prism sheet and/or a diffusion
`sheet. The LEDs 124 may be arranged on a plurality of base
`PCBs 122. The base PCBs 122 are arranged in parallel on
`the bottom case 150. The base PCB 122 may contact or be
`coupled with the bottom case 150. The base PCB 122 may
`include a MCPCB (metal core printed circuit board) which
`may effectively absorb and transfer heat produced at the
`LED 124.
`[0030] The reflecting sheet 126 has a plurality of through
`holes 128. The through holes 128 may correspond to the
`LEDs 124. The light guide plate 130 is spaced apart from the
`LEDs 124 and has a plurality of reflecting dots 131. The
`reflecting dots 131 correspond to the LEDs 124 and/or the
`through holes 128. The optical sheets 132 are disposed on
`the light guide plate 130. The optical sheets 132 condense
`and diffuse light passing through the light guide plate 130.
`The LEDs 124 may include red, green and blue color LEDs
`of the same number. The red, green and blue color LEDs 124
`may turn on substantially simultaneously to mix red, green
`and blue colors, thereby forming a white color light.
`[0031] A heat sink 162 is placed at a rear of the bottom
`case 150, and it has a bent shape. A first part of the heat sink
`
`SEC et al. v. MRI
`SEC Exhibit 1006.008
`IPR 2023-00199
`
`
`
`US 2007/0171353 Al
`
`Jul. 26, 2007
`
`3
`
`162 facing the bottom case 150 may overlap and contact the
`bottom case 150. A second part of the heat sink 162 is bent
`perpendicularly to the first part. In alternate embodiments,
`the heat sink 162 may be shaped or bent differently. For
`example, the bend may not be perpendicular, but may be
`greater or smaller than 90 degrees.
`[0032] The heat-irradiating structure of an exemplary
`embodiment is explained in more detail with reference to
`both FIGS. 3 and 4 when the LCD device is in a standing
`state. FIG. 4 is a cross-sectional view taken along a line
`IV-IV of FIG. 3. The LCD device of FIG. 4 stands substan(cid:173)
`tially vertically to a ground for a viewer's convenience.
`[0033] Referring to both FIGS. 3 and 4, the base PCB 122
`is placed on an inner surface of the bottom case 150, and the
`LEDs 124 are placed on the base PCB 122. Each of the
`LEDs 124 protrudes through a through hole (128 of FIG. 3)
`of a reflection sheet 126. The reflection sheet 126 covers the
`base PCBs 122 and the bottom case 150. The light guide
`plate 130 and the optical sheets 132 are disposed over the
`LEDs 124 and the reflecting sheet 126. The main supporter
`140 surrounds or is coupled with the light guide plate 130
`and the optical sheets 132. The peripheral portion of the
`liquid crystal panel 110 is placed on the main supporter 140.
`The top cover 160 surrounds the liquid crystal panel 110.
`[0034] With respect to the standing LCD device, the gate
`PCB (118 of FIG. 3) is disposed on a side portion of the LCD
`device. The source PCB 116 is disposed on a bottom portion
`of the LCD device. The source PCB 116 may be disposed
`between the top cover 160 and the main supporter 140. A
`control PCB 170 having a timing controller is connected to
`the source PCB 116. The control PCB 170 generates control
`signals for the gate PCB and the source PCB 116 and
`supplies data signals to the source PCB 116. The control
`PCB 170 is disposed at a lower portion of the standing LCD
`device. The control PCB 170 may be disposed at the rear of
`the bottom cover 150.
`[0035] The driving circuits such as the source PCB 116
`and the control PCB 170 are disposed near the lower portion
`of the standing LCD device. The heat produced by the LEDs
`124 may accumulate on the upper portion of the LCD device
`through thermal convection. The heat produced by the light
`source of the LCD device may be transferred through
`thermal convection. In one embodiment, the heat rises
`within the LCD device, therefore raising the temperature and
`increasing the heat at an upper portion of the device.
`Accordingly, the effects on the driving circuit of the heat
`accumulated may be reduced. In other words, the control
`PCB 170 may be disposed on a lower portion of the LCD
`device, which may reduce the heat generated on the upper
`portion of the LCD device.
`[0036] The heat sink 162 may be substantially disposed at
`the upper portion of the standing LCD device. A first part of
`the heat sink 162 may surround an upper portion of the rear
`surface of the bottom case 150, and a second part of the heat
`sink 162 may surround a bent top portion of the bottom case
`150. In alternate embodiments, the heat sink 162 may be
`shaped differently and disposed on a different location on the
`LCD device. For example, the heat sink 162 may comprise
`one part that covers an upper portion of the bottom case 150
`of the LCD device. Alternatively, the heat sink 162 may
`comprise more than two parts and be disposed to substan(cid:173)
`tially cover an upper portion of the bottom case 150 of the
`LCD device. Accordingly, the heat accumulated at the upper
`portion of the standing LCD device by a thermal convection
`
`may be effectively radiated outside through the heat sink 162
`disposed on the upper portion of the LCD device. As
`discussed above, thermal convection may cause the heat to
`rise to the upper portion of the LCD device, therefore, a heat
`sink at the upper portion may irradiate that increased heat
`outside of the device.
`[0037] The heat sink 162 may include a material having a
`high thermal conductivity, for example, graphite or alumi(cid:173)
`num. The high thermal conductivity may allow for the
`accumulated heat to be effectively radiated outside. The
`second part of the heat sink 162 may include a copper pipe
`or an aluminum pipe having a thermal conductivity more
`than about 2000 of a thermal conductivity of copper. The
`second part of the heat sink 162 may be combined with or
`coupled with the first part of the heat sink 162. Accordingly,
`the heat accumulated can be effectively radiated outside. The
`second part of the heat sink 162 may have at least one hole
`or pan.
`[0038] The base PCB 122 contacts the bottom case 150.
`The base PCB 122 may include the MCPCB that effectively
`absorbs the heat produced by the LEDs 124. Accordingly,
`the heat produced at the LEDs 124 may be transferred to the
`heat sink 162 through the base PCB 122 and the bottom case
`150 and thus irradiated outside.
`[0039] As described above, the driving circuit is disposed
`at the lower portion of the standing LCD device where the
`heat is not substantially accumulated by a thermal convec(cid:173)
`tion. The heat sink 162 is disposed at the upper portion of the
`standing LCD device where the heat is accumulated by a
`thermal convection. Further, the heat sink 162 may be made
`of a material or a structure having a high thermal conduc(cid:173)
`tivity, and may have a structure or mechanism for irradiating
`heat outside. Accordingly, the heat accumulated at the upper
`portion of the LCD device in the standing state may be
`effectively irradiated outside. Further, the base PCB 122
`contacts the bottom case 150, and the heat sink 162 contacts
`the bottom case 150. Accordingly, the heat produced at the
`LED can be effectively transferred to the heat sink and
`irradiated outside.
`[0040] Further, because the heat is effectively irradiated,
`the heat sink 162 may have small thickness. Accordingly, a
`thin heat sink 162 may allow the LCD device to maintain a
`thin profile.
`[0041] FIG. 5 is an exploded perspective view illustrating
`an LCD device using a lamp according to another exemplary
`embodiment. The LCD device of FIG. 5 is similar to that of
`FIGS. 3 and 4, except for a different light source. Accord(cid:173)
`ingly, explanations of parts similar with the parts described
`above in relation to FIGS. 3 and 4 may be omitted.
`[0042] Referring to FIG. 5, at least one lamp 246 having
`a bar shape, such as a CCFL or EEFL, may be used as a light
`source. The at least one lamp 246 is disposed at a rear of a
`liquid crystal panel 210. The at least one lamp 246 may be
`arranged in parallel at the rear of the liquid crystal panel 210.
`A pair of side supporters 244 are disposed at both ends of the
`lamp 246 and combined with a bottom case 250. The lamps
`246 are fixed or supported by the side supporters 244.
`In the LCD device according to another exemplary
`[0043]
`embodiment, a backlight assembly 220 and the liquid crystal
`panel 210 may be sequentially disposed over an inner
`surface of a bottom case 250. A main supporter 240 with a
`rectangular frame shape may support the backlight assembly
`220 and the liquid crystal panel 210. The main supporter 240
`is combined or coupled with the bottom case 250.
`
`SEC et al. v. MRI
`SEC Exhibit 1006.009
`IPR 2023-00199
`
`
`
`US 2007/0171353 Al
`
`Jul. 26, 2007
`
`4
`
`[0044] Gate and source PCBs 218 and 216 may be con(cid:173)
`nected to the liquid crystal panel 210. The gate and source
`PCBs 218 and 216 may be connected to the liquid crystal
`panel 210 through a FPC film. The source PCB 216 may be
`disposed opposite to the source PCB as in the related art.
`[0045] A top cover 260 is disposed on a front surface of
`the LCD panel. The top cover 260 has a rectangular frame
`shape in one embodiment. The top cover 260 presses and
`fixes a peripheral portion of the liquid crystal panel 210 and
`is combined or coupled with the main supporter 240 and the
`bottom case 250. The backlight assembly 220 includes the
`lamp 246, a light guide plate 248, and optical sheets 232
`such as a prism sheet and a diffusion sheet. The light guide
`plate 248 is spaced apart from the lamp 246. The optical
`sheets 232 are disposed on or coupled with the light guide
`plate 248. The optical sheets 232 condense and diffuse light
`passing through the light guide plate 248. The bottom case
`250 may function as a reflector.
`[0046] The heat sink 262 is placed at a rear of the bottom
`case 250, and has a bent shape. A first part of the heat sink
`262 facing the bottom case 250 may overlap and contact the
`bottom case 250. A second part of the heat sink 262 is bent
`perpendicularly to the first part.
`[0047] The heat-irradiating structure of the exemplary
`embodiment in FIG. 5 is similar to that of the exemplary
`embodiments described in FI GS. 3 and 4. In other words, the
`driving circuit is disposed at the lower portion of the
`standing LCD device where the heat produced at the lamp is
`not accumulated by a thermal convection. The heat sink 262
`is disposed at the upper portion of the standing LCD device
`where the heat is accumulated by a thermal convection.
`Further, the heat sink 262 may be made of a material or a
`structure having a high thermal conductivity, and may have
`a structure configured to irradiate heat outside. Accordingly,
`the heat accumulated at the upper portion of the LCD device
`having the standing state can be effectively irradiated out(cid:173)
`side. Further, because the heat is effectively irradiated, the
`heat sink may not be very thick. Accordingly, the LCD
`device may have a thin profile because the heat sink 262 also
`has a thin profile.
`[0048] The exemplary embodiments may be applicable to
`an LCD device using other types of light sources. The
`exemplary embodiments are applicable to other display
`devices where the heat produced is accumulated by thermal
`convection.
`[0049] The illustrations of the embodiments described
`herein are intended to provide a general understanding of the
`structure of the various embodiments. The illustrations are
`not intended to serve as a complete description of all of the
`elements and features of apparatus and systems that utilize
`the structures or methods described herein. Many other
`embodiments may be apparent to those of skill in the art
`upon reviewing the disclosure. Other embodiments may be
`utilized and derived from the disclosure, such that structural
`and logical substitutions and changes may be made without
`departing from the scope of the disclosure. Additionally, the
`illustrations are merely representational and may not be
`drawn to scale. Certain proportions within the illustrations
`may be exaggerated, while other proportions may be mini(cid:173)
`mized. Accordingly, the disclosure and the figures are to be
`regarded as illustrative rather than restrictive.
`[0050] One or more embodiments of the disclosure may be
`referred to herein, individually and/or collectively, by the
`term "invention" merely for convenience and without
`
`intending to voluntarily limit the scope of this application to
`any particular invention or inventive concept. Moreover,
`although specific embodiments have been illustrated and
`described herein, it should be appreciated that any subse(cid:173)
`quent arrangement designed to achieve the same or similar
`purpose may be substituted for the specific embodiments
`shown. This disclosure is intended to cover any and all
`subsequent adaptations or variations of various embodi(cid:173)
`ments. Combinations of the above embodiments, and other
`embodiments not specifically described herein, will be
`apparent to those of skill in the art upon reviewing the
`description.
`[0051] The above disclosed subject matter is to be con(cid:173)
`sidered illustrative, and not restrictive, and the appended
`claims are intended to cover all such modifications,
`enhancements, and other embodiments, which fall within the
`true spirit and scope of the present invention. It will be
`apparent to those skilled in the art that various modifications
`and variations can be made in the LCD device of the present
`invention without departing from the spirit or scope of the
`invention. Thus, it is intended that the present invention
`cover the modifications and variations of this invention
`provided they come within the scope of the appended claims
`and their equivalents.
`
`What is claimed is:
`1. A liquid crystal display device comprising:
`a backlight assembly disposed adjacent a liquid crystal
`panel and a bottom case, the backlight assembly includ(cid:173)
`ing a light source; and
`a heat sink including a first part and a second part, wherein
`the first part is disposed adjacent to a top portion of the
`liquid crystal display device, and the second part is
`disposed adjacent to an upper portion of the liquid
`crystal display device.
`2. The device according to claim 1, further comprising a
`driving circuit operating the liquid crystal panel, the driving
`circuit disposed adjacent to a lower portion of the liquid
`crystal display device.
`3. The device according to claim 2, wherein the driving
`circuit includes a source printed circuit board (PCB) and a
`control printed circuit board (PCB).
`4. The device according to claim 1, wherein the second
`part contacts a rear surface of the bottom case.
`5. The device according to claim 1, wherein the heat sink
`comprises at least one of graphite or aluminum.
`6. The device according to claim 1, wherein the first part
`of the heat sink comprises at least one of a copper pipe or an
`aluminum pipe.
`7. The device according to claim 1, wherein the light
`source comprises at least one light emitting diode (LED).
`8. The device according to claim 7, further comprising a
`base printed circuit board (PCB) on which the at least one
`LED is placed, the base PCB contacting the bottom case.
`9. The device according to claim 1, wherein the light
`source comprises a lamp.
`10. The device according to claim 1, wherein the back(cid:173)
`light assembly is disposed between the liquid crystal panel
`and the bottom case.
`11. A liquid crystal display device comprising:
`a backlight assembly disposed between a liquid crystal
`panel and a bottom case, the backlight assembly includ(cid:173)
`ing a light source;
`
`SEC et al. v. MRI
`SEC Exhibit 1006.010
`IPR 2023-00199
`
`
`
`US 2007/0171353 Al
`
`Jul. 26, 2007
`
`5
`
`a heat sink configured to irradiate heat produced at the
`light source, wherein the heat is irradiated outside the
`liquid crystal display device; and
`a driving circuit configured to operate the liquid crystal
`panel, the driving circuit disposed at a lower portion of
`the liquid crystal display device.
`12. The device according to claim 11, wherein the heat
`sink includes a first part and a second part, wherein the first
`part is disposed at a top portion of the liquid crystal display
`device, and the second part is disposed at an upper portion
`of the liquid crystal display device.
`13. The device according to claim 12, wherein the lower
`portion and the top portion of the liquid crystal display
`device are established when the liquid crystal display device
`is in a standing state.
`14. The device according to claim 11, wherein the driving
`circuit comprises at least one of a source printed circuit
`board (PCB) or a control PCB.
`15. The device according to claim 12, wherein the second
`part is coupled with a rear surface of the bottom case.
`16. The device according to claim 11, wherein the heat
`sink comprises at least one of graphite or aluminum.
`17. The device according to claim 12, wherein the first
`part comprises at least one of a copper pipe or an aluminum
`pipe.
`18. The device according to claim 11, wherein the light
`source comprises at least one LED.
`19. The device according to claim 18, further comprising
`a base PCB coupled with the at least one LED, the base PCB
`in contact with the bottom case.
`20. The device according to claim 11, wherein the light
`source comprises at least one lamp.
`
`21. A liquid crystal display device comprising:
`a backlight assembly coupled with a liquid crystal panel
`and a bottom case, wherein the backlight assembly
`includes at least one light source;
`a heat sink disposed on the liquid crystal display device
`where heat produced at the light source is accumulated
`by a thermal convection; and
`a driving circuit disposed on the liquid crystal display
`device at a position different from where the heat is
`accumulated and the heat sink is disposed.
`22. The device according to claim 21, wherein the driving
`circuit includes a source printed circuit board (PCB) and a
`control PCB.
`23. A liquid crystal display device comprising:
`a liquid crystal pane