Source: https://patents.google.com/patent/KR20170026938A/en
Timestamp: 2020-02-29 13:43:35
Document Index: 248084814

Matched Legal Cases: ['art 142', 'art 142', 'art 142', 'art 203', 'art 204', 'art 203', 'art 203', 'art 191', 'art 213', 'art 215', 'art 214', 'art 194', 'art 202', 'art\n203', 'art 204', 'art\n205']

KR20170026938A - Display device - Google Patents
KR20170026938A
KR20170026938A KR1020150123048A KR20150123048A KR20170026938A KR 20170026938 A KR20170026938 A KR 20170026938A KR 1020150123048 A KR1020150123048 A KR 1020150123048A KR 20150123048 A KR20150123048 A KR 20150123048A KR 20170026938 A KR20170026938 A KR 20170026938A
KR1020150123048A
2015-08-31 Application filed by 삼성디스플레이 주식회사 filed Critical 삼성디스플레이 주식회사
2015-08-31 Priority to KR1020150123048A priority Critical patent/KR20170026938A/en
2017-03-09 Publication of KR20170026938A publication Critical patent/KR20170026938A/en
And a backlight unit including a display panel, a plurality of light sources for generating light, and a light source substrate on which the light sources are mounted, the backlight unit providing the light to the display panel. And a receiving member for receiving the backlight unit and including a bottom portion and side wall portions extending from the bottom portion. And a driving substrate connected to the light source substrate, wherein the driving substrate includes a first extending portion disposed outside the receiving member and a second extending portion connected to the first extending portion, And a pad portion inserted into one of the side wall portions and electrically connected to the light source substrate.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly to a display device for inserting a driving substrate into a light source substrate.
2. Description of the Related Art In general, a technique of employing a light emitting diode (LED) as a light source in place of a conventional fluorescent lamp in a liquid crystal display device or various lighting devices such as an LCD-TV or an LCD monitor is popular, Which is due to its excellent brightness.
For example, in an edge-type LED display in which LEDs are disposed only on the edge of a display panel, the frame is typically composed of a bottom chassis, a top chassis, a middle mold, etc., It is installed at the edge of the bottom chassis with several attached to the bar densely. Particularly, in a state where a member called an &quot; extrusion bar &quot; is assembled to the bottom chassis at an edge portion of the bottom chassis, the LED bar is joined to the extrusion bar. The configuration of the LED bar and the extrusion bar is equally applicable to an illumination device such as an LED lamp employing an LED as a light source.
An object of the present invention is to provide a display device in which a driving substrate can be connected without a connector to a light source substrate on which a light source is mounted.
In order to achieve the object of the present invention, a display device according to an embodiment of the present invention includes a display panel, a plurality of light sources for generating light, and a light source substrate on which the light sources are mounted, And a backlight unit. A driving substrate having an accommodating member for accommodating the backlight unit and including a bottom portion and sidewall portions extending from the bottom portion, an extension portion inserted into the first sidewall portion of the sidewall portions, and the extension portion being connected to the first extension portion And the second extension portion is provided with a pad portion electrically connected to the light source substrate.
According to an embodiment of the present invention, the backlight unit further includes a circuit pattern portion disposed in a predetermined region of the light source substrate adjacent to one side of the light source substrate, and electrically connected to the pad portion of the driving substrate.
According to an embodiment of the present invention, the sidewall portions include first sidewall portions extending in a first direction and second sidewall portions connected in a second direction intersecting the first direction at an end portion of the first sidewall portions And the light source substrate extends in the first direction and is disposed adjacent to the first sidewall portion of any one of the first sidewall portions.
According to an embodiment of the present invention, the first sidewall portion disposed adjacent to the light source substrate includes a first opening hole into which a second extending portion is inserted.
According to an embodiment of the present invention, the first extending portion extends in a first direction, and the second extending portion is connected to one side of the first extending portion and extends in a second direction intersecting the first direction.
According to the embodiment of the present invention, the second extending portion is inserted into the first opening hole of the accommodating member, and the widths of the second extending portion and the first opening hole are the same.
According to an embodiment of the present invention, the driving substrate further includes a driving unit that supplies power to the light source substrate through the pad unit and the circuit pattern unit, which are electrically connected, and that is disposed in the first extending unit.
According to an embodiment of the present invention, the driving substrate further includes a first conductive member disposed in contact with a lower portion of the pad portion, and the light source substrate includes a second conductive member disposed in contact with an upper portion of the circuit pattern portion And the first conductive member and the second conductive member are in contact with each other.
According to the embodiment of the present invention, the first conductive member and the second conductive member have the same thickness.
According to an embodiment of the present invention, the driving substrate further includes a third conductive member contacting the pad portion, and the third conductive member connects the pad portion and the circuit pattern portion.
According to an embodiment of the present invention, the third conductive member may include a first extending member extending in the first direction and contacting the pad portion, a second extending member contacting the circuit pattern portion, And a third extension member which connects the one side of the second extension member and one side of the first extension member and the other side of the second extension member.
According to the display apparatus of the present invention, the light source substrate and the driving substrate can be stably connected to each other because the pattern unit is directly contacted and electrically connected to the light source substrate and the driving substrate.
As a result, the assembling time of the connector between the light source substrate and the driving substrate is greatly reduced, and defects caused by connector insertion can be prevented.
2A is a cross-sectional view taken along the line I-I 'shown in FIG.
2B is a cross-sectional view taken along the line II-II 'shown in FIG.
3 is a view showing a coupling relationship between a light source substrate and a driving substrate according to an embodiment of the present invention.
4 is a view showing a connection relationship between the light source and the driving unit of FIG.
5A is a view showing a coupling relationship of the conductive member according to an embodiment of the present invention.
FIG. 5B is a view showing a coupling relationship of the conductive member according to still another embodiment of the present invention. FIG.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and advantages of the present invention can be easily understood through the embodiments related to the drawings. However, the present invention is not limited to the embodiments described herein, but may be modified in various forms. Rather, the embodiments of the present invention will be described in greater detail with reference to the accompanying drawings, in which: FIG. Therefore, the scope of the present invention should not be construed as being limited by the embodiments to be described later. In the following embodiments and the drawings, the same reference numerals denote the same elements.
1 is a cross-sectional view taken along line I-I 'of FIG. 1, and FIG. 2B is a cross-sectional view taken along the line II- Sectional view taken along line II 'in FIG.
1 and 2B, a display device 100 according to an embodiment of the present invention displays an image through a display area DA.
The display device 100 includes a cover member 110, a display panel 120, a plurality of optical sheets 130, a mold frame 140, a backlight unit 150, a housing member 190, ).
The display panel 120 includes a liquid crystal display panel including a liquid crystal layer, an organic light emitting display panel including an organic light emitting layer, an electrowetting display panel including an electrowetting layer an electro-wetting display panel, or an electrophoretic display panel including an electrophoresis layer.
As an exemplary embodiment, the display panel includes a first substrate (not shown), a second substrate (not shown) facing the first substrate, and a liquid crystal layer (not shown) disposed between the first substrate and the second substrate A liquid crystal display panel.
The display panel 120 includes the display area DA for displaying an image and a non-display area disposed around the display area DA and not displaying an image. The display panel 120 includes a plurality of pixels (not shown) disposed in the display area DA to generate an image.
The optical sheets are disposed under the display panel. Optical Sheet In this embodiment, the plurality of optical sheets 130 includes a diffusion sheet 133 for diffusing light, a prism sheet 132 for condensing light, a prism sheet 132 disposed on the prism sheet 132, And a protective sheet 131 for protecting the protective sheet 131.
The prism sheet 122 condenses the light diffused by the diffusion sheet 133 in a direction perpendicular to the plane of the display panel 120. The light having passed through the prism sheet 122 advances vertically by the prism sheet 122, and as a result, the luminance uniformity is improved and the front luminance of the optical sheet display apparatus can be improved.
The backlight unit 150 may be disposed below the display panel 120 to provide light to the display panel 120. The backlight unit 150 may include a plurality of light sources LS, 170, a light guide plate 160, and a reflector 180.
Each of the plurality of light sources LS generates light. In this embodiment, each of the plurality of light sources LS is mounted on the light source substrate 170, and receives power from the light source substrate 170 to generate light.
The plurality of light sources LS are arranged side by side on the receiving member 190 at regular intervals.
Therefore, the light generated from the plurality of light sources LS may be incident on the light guide plate 160 side. In this embodiment, each of the plurality of light sources LS may include a light emitting diode.
The light source substrate 170 extends in a first direction D1 and is accommodated in the receiving member 190 on one side thereof. The plurality of light sources LS on the light source substrate 170 are arranged in the form of a package, And may be mounted on the light source substrate 170 by a surface mount technology (SMT). Alternatively, the plurality of light sources LS may be formed by die bonding the plurality of light sources LS on the light source substrate 170 and electrically connecting the light sources LS by wire bonding. And may be disposed on the light source substrate 170.
And a circuit pattern portion 171 electrically connected to the driving substrate 200 on one side of the light source substrate 170. The circuit pattern portion 171 contacts the pad portion 202 of the driving substrate 200 to supply electricity to the plurality of light sources LS.
The light source substrate 170 is adjacent to the first sidewall 191 of the receiving member 190 in the second direction D2 on the reflector 180 and the reflective plate 180 and the light guide plate 160 .
The light guide plate 160 is housed in the receiving member 190 and disposed on the reflective plate 180. The light guide plate 160 guides light provided from the light sources LS toward the display panel 120 do.
The reflection plate 180 is disposed on the bottom portion 193 of the receiving member 190, including a light reflecting material such as polyethylene terephthalate (PET) and aluminum.
The cover member 110 is disposed on the display panel 120 and has a frame shape. The cover member 110 is disposed to cover a non-display area of the display panel 120, and the display area DA of the display panel 120 is exposed by the cover member 110.
The side surface of the cover member 110 may extend downward, and may be disposed on the upper portion of the receiving member 190 and in contact with an outer surface having a predetermined area.
The mold frame 140 extends along the side walls of the receiving member 190 and is disposed inside the side walls 191, 192. The optical sheets 130 and the display panel 120 are seated on the mold frame 140.
The mold frame 140 includes a vertical part 142 disposed inside the sidewalls of the receiving member 190 and a horizontal part 142 connected to a predetermined area of the center of the vertical part 142 and extending horizontally And includes a horizontal portion 143.
The optical sheets 130 and the display panel 120 are disposed on the horizontal portion 143. A predetermined region of one side of the light guide plate 160 is disposed below a predetermined region of the end of the horizontal portion 143. A predetermined region of the end of the horizontal portion 143 is disposed in contact with a predetermined region of one side of the light guide plate 160. As a result, the light guide plate 160 can be fixed by the horizontal portion 143 of the mold frame 140.
The mold frame 140 is disposed in the vertical portion 142 and includes a second opening hole 141 corresponding to the first opening hole 194 of the receiving member 190. The second opening hole 141 has the same size as the first opening hole 194 and is arranged to overlap with the first opening hole 194.
The second opening hole 141 is disposed in a predetermined region of the lower portion of the vertical portion 142 adjacent to the light source substrate 170. The vertical portion 142 is disposed on the light source substrate 170. Also, it is arranged so as not to overlap with the light sources LS.
The accommodating member 190 accommodates the backlight unit 150. The accommodating member 190 may include a bottom portion 193 and side wall portions 191 and 192 extending from the bottom portion 193 and one side wall 191 and 192 of the side wall portions 191 and 192. In this embodiment, And a first opening hole (194) disposed on the negative side.
The sidewall portions include first sidewall portions 191 extending in the first direction D1 and second sidewall portions 192 extending in a second direction D2 at the ends of the first sidewall portions 191 And the first side wall portions 191 and the second side wall portions 192 are disposed facing each other.
A predetermined region of the driving substrate 200 is inserted into the first opening hole 194. A predetermined region of the driving substrate 200 is inserted into the first opening hole 194 and connected to the light source substrate 170.
The driving substrate 200 includes a driving unit 201 and a pad unit 202. The driving unit 201 and the pad unit 202 are electrically connected to a plurality of wirings 205. [
The driving substrate 200 includes a first extension portion 203 and a second extension portion 204 and is electrically connected to the pad portion 202 and the circuit pattern portion 171 of the light source substrate 170, And supplies power to the light source substrate 170 through the light source substrate 170.
The driving unit 201 is disposed in the first extending unit 203 and the pad unit 202 is disposed in the second extending unit 204. The first extension part 203 extends in a first direction D1 and the second extension part 204 is connected to one side of the first extension part 203 to intersect the first direction D1. In the second direction D2.
However, the present invention does not limit the shape of the driving substrate 200. For example, the driving substrate 200 may be of 'rod-like shape' and may be easily inserted into the first opening hole 194 of the receiving member 190.
A supporting member 300 for supporting the driving substrate 200 is disposed on the rear surface of the driving substrate 200. The supporting member 300 is in contact with the first side wall portion 191 of the receiving member 190 and the first side wall portion 191 fixing screw 310 is inserted to engage with the receiving member 190 do.
The supporting member 300 includes a hole 311 through which the fixing screw 310 passes and a fixing screw 310 passing through the hole 311 is inserted into the first side wall portion 191 of the receiving member, Respectively.
Specifically, the first side wall 191 includes a plurality of holes 311 into which the fixing screws 310 are inserted, and the fixing screws 310 are inserted into the first side wall portions 191 of the receiving member 190, Is inserted into the coupling groove 195 in the second direction D2 from the side of the first engaging portion 191.
Accordingly, the support member 300, the first extension part 203 and the first side wall part 191 are fixed by the fixing screws 310, so that the driving substrate 200 and the supporting member 300, The receiving member 190 may be connected.
However, the present invention does not limit the shape and fixing method of the support member 300. [ For example, the support member 300 may be coupled and fixed in a bloke (brush) manner with an engagement groove and a protrusion.
FIG. 3 is a view showing a coupling relationship between a light source substrate and a driving substrate according to an embodiment of the present invention, and FIG. 4 is a view showing a connection relationship between the light source and the driving unit of FIG.
In describing FIGS. 3 and 4, the components described above are denoted by the same reference numerals, and redundant description of the components is omitted.
3 and 4, the second extended portion 204 of the driving substrate 200 is inserted into the first opening hole 194 of the receiving member 190 in the second direction D2. The width W1 of the first opening hole 194 is equal to the width W2 of the second extension 204 of the driving board 200. [
The circuit pattern portion 171 of the light source substrate 170 adjacent to the first opening hole 194 is exposed by the first opening hole 194.
The light source substrate 170 is disposed on the bottom portion 193 of the receiving member 190 in the first direction D1 adjacent to any one of the first side wall portions 191 of the first side wall portions 191, A plurality of light sources LS for generating light on the light source substrate 170 are mounted. A circuit pattern portion 171 is disposed on one side of the light source substrate 170 and the plurality of light sources LS and the circuit pattern portion 171 are connected to each other by wiring.
The driving substrate 200 includes a driving unit 201 for controlling the light emission of the plurality of light sources LS mounted on the light source substrate 170 and the circuit pattern unit 171 of the light source substrate 170, And a pad portion 202 which is in contact with the pad portion 202.
In addition, the driving substrate 200 may include the reflective layer 206 having a white hue in the second extended portion 204 while exposing the pad portion 202. Illustratively, the reflective layer 206 may be formed of a dielectric material, or may be formed of a metal or a metal oxide. Therefore, there is an effect that the difference from the light reflection of the light source LS can be minimized.
The driving unit 201 is connected to the pad unit 202 through a wiring 205 and a control signal from the driving unit 201 may be connected to the pad unit 202 through the wiring 205.
The control signal is transmitted to the circuit pattern portion 171 of the light source substrate 170 connected to the pad portion 202 and the plurality of light sources LS connected to the circuit pattern portion 171 are light- do.
Although not shown, a separate power supply unit for supplying power to the driving unit 201 may be disposed on the driving substrate 200.
Meanwhile, the driving unit 201 may be a driving IC used in a driving integrated circuit, and may be a driving IC (Integrated Circuit) suitable for the use of a light source. In recent years, drive ICs using a switching regulator method have been widely used, and the input voltage range is wide. Most of them use a constant current output method, and a PWM (Pulse Width Modulation) I have chosen.
In general, a drive IC for driving an LED is manufactured in a chip form on a silicon substrate by a semiconductor process, and these drive IC chips can be electrically connected to each other through a printed circuit pattern on a circuit board.
In this embodiment, no separate connector is formed between the driving substrate 200 and the light source substrate 170, and the pad portion 202 of the driving substrate 200 and the light source substrate 170 of the light source substrate 170 The pattern portion 171 is contacted and connected.
Therefore, the driving substrate 200 and the light source substrate 170 can be stably connected to each other, the assembling time due to the connector fastening can be greatly reduced, and the defects generated in the connector insertion can be prevented.
FIG. 5A is a view showing the coupling relation of the conductive member according to the embodiment of the present invention, and FIG. 5B is a view showing the coupling relation of the conductive member according to still another embodiment of the present invention.
5A and 5B, the light source substrate 170 and the driving substrate 200 are in contact with each other. A circuit pattern portion 171 is disposed on one side of the light source substrate 170 and a pad portion 202 is disposed on a lower surface of the driving substrate 200 except for the reflective layer 206.
The circuit pattern portion 171 and the pad portion 202 each include a first conductive member 210 and a second conductive member 220 of a conductive material and the first conductive member 210 and the second conductive member 220, The conductive members 220 are in contact with each other.
The first conductive member 210 and the second conductive member 220 electrically connect the light source substrate 170 and the driving substrate 200.
The first conductive member 210 and the second conductive member 220 are formed to have a constant thickness and the circuit pattern portion 171 and the pad portion 202 are in contact with each other only by a circuit pattern, Can be improved.
That is, the first conductive member 210 and the second conductive member 220 may be soldered using solder.
However, the present invention is not limited to the shape and material of the first conductive member 210 and the second conductive member 220. The conductive member may be in the form of a spring including a metal material, and the first conductive member 210 and the second conductive member 220 may have different thicknesses.
In another embodiment, the spring-shaped third conductive member 230 may have a shape in which one side of a region in contact with the pad portion 202 and one side of a region in contact with the circuit pattern portion 171 are connected to each other Lt; / RTI &gt;
The third conductive member 230 may include a first extending portion 213 that is a region contacting the circuit pattern portion 171, a second extending portion 214 that is a region contacting the pad portion 202, 1 extension part 213 and a third extension part 215 to which one side of the second extension part 214 is connected to each other.
The first extending portion 213 and the second extending portion 214 may face each other and the second extending portion 214 may form a curvature curved in one direction on the circuit pattern portion 171. [
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. You can do it. In addition, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, and all technical ideas which fall within the scope of the following claims and equivalents thereof should be interpreted as being included in the scope of the present invention .
100: display device 110: upper cover
120: display panel 130: multiple optical sheets
131: protective sheet 132: prism sheet
133: diffusion sheet 140: mold frame
143: horizontal portion 142: vertical portion
141: second aperture hole 150: backlight unit
160: light guide plate 170: light source substrate
180: reflector 190: storage member
191: first side wall portion 192: second side wall portion
193: bottom part 194: first opening hole
195: coupling groove 200: driving substrate
201: driving part 202: pad part
203: first extension part 204: second extension part
205: Wiring 300: Support member
310: fixing screw 311: hole
LS: Light source
A backlight unit including a plurality of light sources for generating light and a light source substrate on which the light sources are mounted, the backlight unit providing the light to the display panel;
A housing member accommodating the backlight unit and including a bottom portion and side wall portions extending from the bottom portion; And
And a driving substrate connected to the light source substrate,
The driving substrate includes:
A first extending portion disposed outside the receiving member; And
And a second extension connected to the first extension,
And the second extension portion includes a pad portion inserted into one of the side wall portions and electrically connected to the light source substrate.
And a circuit pattern portion disposed in a predetermined region of the light source substrate adjacent to one side of the light source substrate and electrically connected to the pad portion of the driving substrate.
The sidewall portions,
First side wall portions extending in a first direction; And
And second sidewall portions connected in a second direction intersecting the first direction at an end of the first sidewall portions,
Wherein the light source substrate extends in the first direction and is disposed adjacent to the first sidewall portion of any one of the first sidewall portions.
And the first sidewall portion disposed adjacent to the light source substrate includes a first opening hole into which the second extending portion is inserted.
Wherein the first extending portion extends in a first direction and the second extending portion is connected to one side of the first extending portion and extends in a second direction intersecting the first direction.
Wherein the second extending portion is inserted into the first opening hole of the receiving member, and the widths of the second extending portion and the first opening hole are the same.
Wherein the driving substrate further comprises a driving unit that supplies power to the light source substrate through the pad unit and the circuit pattern unit electrically connected to each other and is disposed in the first extending unit.
Wherein the driving substrate further includes a plurality of wirings electrically connecting the driving unit and the pad unit.
The driving substrate further includes a first conductive member disposed in contact with a lower portion of the pad portion,
Wherein the light source substrate further comprises a second conductive member disposed in contact with an upper portion of the circuit pattern portion,
Wherein the first conductive member and the second conductive member are in contact with each other.
Wherein the first conductive member and the second conductive member have the same thickness.
The driving substrate further includes a third conductive member contacting the pad portion,
And the third conductive member connects the pad portion and the circuit pattern portion.
The third conductive member may include:
A first extension member extending in the first direction and contacting the pad portion;
The second extending member being in contact with the circuit pattern portion and facing the first extending portion at a predetermined interval; And
And a third extending member connecting one side of the first extending member and one side of the second extending member to each other.
Wherein the backlight unit further comprises a mold frame,
Wherein the mold frame includes a second opening hole into which the second extending portion is inserted.
And a reflective layer disposed on the second extension portion to expose the pad portion and having a white color.
A light guide plate disposed adjacent to the plurality of light sources and guiding the light toward the display panel;
At least one optical optical sheet disposed between the light guide plate and the display panel; And
And a reflective plate facing the optical optical sheet with the light guide plate therebetween.
Wherein the first and second conductive members have different thicknesses.
KR1020150123048A 2015-08-31 2015-08-31 Display device KR20170026938A (en)
KR1020150123048A KR20170026938A (en) 2015-08-31 2015-08-31 Display device
US15/078,025 US9983349B2 (en) 2015-08-31 2016-03-23 Display device
US15/964,313 US10295731B2 (en) 2015-08-31 2018-04-27 Display device
KR20170026938A true KR20170026938A (en) 2017-03-09
ID=58103575
US (2) US9983349B2 (en)
KR (1) KR20170026938A (en)
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KR20120061292A (en) 2010-12-03 2012-06-13 엘지이노텍 주식회사 Light source device, backlight unit and display having the same
JP5857496B2 (en) * 2011-07-25 2016-02-10 セイコーエプソン株式会社 Lighting device, display device, and electronic device
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2016-03-23 US US15/078,025 patent/US9983349B2/en active Active
2018-04-27 US US15/964,313 patent/US10295731B2/en active Active
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US9983349B2 (en) 2018-05-29
US10295731B2 (en) 2019-05-21
US20170059768A1 (en) 2017-03-02
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