Display device and light source device thereof

Abstract

The display device may include a liquid crystal panel and a light source device, where the light source device may include: a substrate including a first side facing the liquid crystal panel; the at least one dimming block is arranged on the first side of the substrate, and each of the at least one dimming block comprises at least one light source; the at least one driving element is arranged on the first side of the substrate, and the at least one driving element respectively drives the at least one dimming block; and at least one signal line formed on the substrate, the at least one driving element may include: at least one input pin, each of the at least one input pin being electrically connected with each of the at least one signal line; and at least one output pin, wherein each of the at least one output pin is electrically connected with each of the at least one input pin.

Description

Technical Field

[0001] The disclosed invention relates to a display device and a light source device thereof. Background Art

[0002] Generally, a display device is an output device that converts acquired or stored electrical information into visual information and displays the visual information to a user, and is used in various fields such as homes or commercial places.

[0003] Examples of display devices include monitor devices connected to personal computers or server computers, portable computer devices, navigation terminal devices, ordinary television devices, Internet Protocol Television (IPTV) devices, smart phones, tablet PCs, personal digital assistant (PDA) devices, cellular phones and other portable terminal devices, various display devices used in industrial sites for reproducing images such as advertisements or movies, or various types of audio / video systems other than these.

[0004] A display device (whether a self-luminous display or a non-self-luminous display) includes a light source device to convert electrical information into visual information, and the light source device includes a plurality of light sources that emit light independently. Each of the plurality of light sources includes, for example, a light emitting diode (LED) or an organic light emitting diode (OLED).

[0005] In particular, in order to improve the contrast of an image, a local dimming technique is applied to the light source device (backlight unit) of a non-self-luminous display. The plurality of light sources can be divided into a plurality of dimming blocks, and a driving element can control the driving current supplied to the light sources included in one or more dimming blocks.

[0006] The driving element and the light source (e.g., a light emitting diode) can be fixed to a substrate using surface mount technology (SMT).

[0007] Recently, in order to achieve a high contrast ratio, a plurality of driving elements and light sources are being used, and thus, multiple wirings are required on the substrate. Summary of the Invention

[0008] Technical Problem

[0009] According to one aspect of the disclosed invention, it is possible to minimize signal wirings included in a display device.

[0010] According to one aspect of the present invention disclosed, the number of layers of a printed circuit board included in a display device can be minimized.

[0011] The technical problems to be achieved in this specification are not limited to the above-mentioned technical problems, and those of ordinary skill in the technical field to which the present invention pertains can clearly understand other technical problems not mentioned from the following description.

[0012] Technical Solution

[0013] A display device according to an embodiment of the present disclosure may include a liquid crystal panel and a light source device.

[0014] A light source device according to an embodiment of the present disclosure may include: a substrate including a first side facing the liquid crystal panel; at least one dimming block disposed on the first side of the substrate, and each of the at least one dimming block including at least one light source; at least one driving element disposed on the first side of the substrate, the at least one driving element respectively driving the at least one dimming block; and at least one signal line disposed on the first side of the substrate.

[0015] The at least one signal line may include at least one of a timing line that transmits a timing signal to the at least one driving element, a data line that transmits a data signal to the at least one driving element, and a power line that transmits a power signal to the at least one driving element.

[0016] The at least one driving element may include: at least one input pin, each of the at least one input pin being electrically connected to each of the at least one signal line; and at least one output pin, each of the at least one output pin being electrically connected to each of the at least one input pin. Description of the Drawings

[0017] Figure 1 is a perspective view of a display device according to an embodiment.

[0018] Figure 2 is an exploded perspective view of a display device according to an embodiment.

[0019] Figure 3 is a cross-sectional view of a display panel included in a display device according to an embodiment.

[0020] Figure 4 is an exploded perspective view of a light source device included in a display device according to an embodiment.

[0021] Figure 5 is a view showing that a plurality of light sources in a display device according to an embodiment are divided into a plurality of dimming blocks.

[0022] Figure 6 Is a perspective view of a light source included in a light source device according to an embodiment.

[0023] Figure 7 Is Figure 6 An exploded perspective view of the light source shown.

[0024] Figure 8 Is along Figure 6 A side sectional view taken along the A-A' direction shown.

[0025] Figure 9 Is a control block diagram of a display device according to an embodiment.

[0026] Figure 10 And Figure 11 Illustrates an example of a connection structure of a dimming driver, a driving element, and a dimming block according to an embodiment.

[0027] Figure 12 Schematically illustrates a plurality of pins provided on a driving element and signal lines connected to each of the plurality of pins according to an embodiment.

[0028] Figure 13 , Figure 14 And Figure 15 Schematically illustrates an example of a connection relationship between driving elements according to an embodiment.

[0029] Figure 16 Schematically illustrates an example of a connection relationship between driving elements on a substrate according to an embodiment.

[0030] Figure 17 Schematically illustrates an example of a connection relationship between driving elements and a structure of driving lines on a substrate according to an embodiment. Detailed Description of the Invention

[0031] The embodiments described in this specification and the configurations shown in the drawings are only a preferred example of the disclosed invention, and various modifications capable of replacing the embodiments and drawings of this specification may be available when applying for this application.

[0032] The terms used in this specification are used to describe the embodiments and are not intended to limit and / or define the disclosed invention.

[0033] For example, in this specification, singular expressions may include plural expressions unless they have a clearly different meaning in the context.

[0034] In addition, terms such as "including" or "having" are used to indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and do not exclude the additional presence or possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0035] In addition, ordinal terms such as "first", "second", etc. are used to distinguish one component from another component, and do not limit the said one component.

[0036] In addition, terms such as "~ part", "~ device", "~ block", "~ component", "~ module", etc. may refer to a unit that processes at least one function or operation. For example, the said terms may refer to at least one hardware such as a field-programmable gate array (FPGA) / application specific integrated circuit (ASIC), at least one software stored in a memory, or at least one process processed by a processor.

[0037] Hereinafter, an embodiment of the disclosed invention will be described in detail with reference to the accompanying drawings. The same reference numerals or symbols shown in the drawings may represent components or elements that substantially perform the same function.

[0038] Hereinafter, the operating principle and embodiments of the present invention will be described with reference to the accompanying drawings.

[0039] Figure 1 An example of the appearance of a display device according to an embodiment is shown.

[0040] Referring to Figure 1 , the display device 10 is a device that can process an image signal received from the outside and visually display the processed image. Hereinafter, the case where the display device 10 is a television (TV) is illustrated, but it is not limited thereto. For example, the display device 10 can be implemented in various forms such as a monitor, a portable multimedia device, a portable communication device, etc. As long as the display device 10 is a device that visually displays an image, its form is not limited.

[0041] Moreover, the display device 10 can be a large format display (LFD) installed outdoors such as on the roof of a building or at a bus stop. Here, outdoors is not necessarily limited to the outside. Even indoors such as a subway station, a shopping mall, a cinema, a company, a store, etc., as long as it is a place where most people can enter and exit, the display device 10 according to an embodiment can be installed.

[0042] The display device 10 can receive content including video signals and audio signals from a variety of content sources and can output video and audio corresponding to the video signals and audio signals. For example, the display device 10 can receive content data through a broadcast receiving antenna or a wired cable, receive content data from a content playback device, or receive content data from a content providing server of a content provider.

[0043] As Figure 1 shown, the display device 10 can include a main body 11 and a screen 12 that displays an image I.

[0044] The main body 11 can form the outer shape of the display device 10, and components for enabling the display device 10 to display an image I or perform various functions can be provided inside the main body 11. Figure 1 The shown main body 11 has a flat plate shape, but the shape of the main body 11 is not limited to Figure 1 the shape shown therein. For example, the main body 11 can have a curved plate shape.

[0045] The screen 12 can be formed on the front surface of the main body 11 and can display an image I. For example, the screen 12 can display a still image or a moving image. In addition, the screen 12 can display a two-dimensional planar image or a three-dimensional stereoscopic image utilizing binocular parallax of the user.

[0046] The screen 12 can include a liquid crystal panel capable of transmitting or blocking light emitted by a light source device or the like.

[0047] A plurality of pixels P can be formed on the screen 12, and the image I displayed on the screen 12 can be formed by light emitted by each of the plurality of pixels P. For example, light emitted by each of the plurality of pixels P can be combined like a mosaic, thereby forming an image I on the screen 12.

[0048] Each of the plurality of pixels P can emit light of various brightnesses and various colors. In order to emit light of various colors, each of the plurality of pixels P can include sub-pixels P R 、P G 、P B .

[0049] The sub-pixels P R 、P G 、P B can include a red sub-pixel P R 、a green sub-pixel P G capable of emitting green light, and a blue sub-pixel P BFor example, red light can represent light with a wavelength of approximately 700 nm (nanometer, one billionth of a meter) to 800 nm. Green light can represent light with a wavelength of approximately 500 nm to 600 nm. Blue light can represent light with a wavelength of approximately 400 nm to 500 nm.

[0050] Through the red light of the red sub-pixel P R and the green light of the green sub-pixel P G as well as the blue light of the blue sub-pixel P B in combination, light of various brightnesses and various colors can be emitted from each of the plurality of pixels P.

[0051] Figure 2 FIG. shows an example of the structure of a display device according to an embodiment. Figure 3 FIG. shows an example of a liquid crystal panel included in a display device according to an embodiment.

[0052] As Figure 2 shown, various components for generating an image I on the screen S can be provided inside the main body 11.

[0053] For example, a light source device 100 as a surface light source is provided in the main body 11, a liquid crystal panel 20 that blocks or transmits light emitted from the light source device 100, a control component 50 that controls the operations of the light source device 100 and the liquid crystal panel 20, and a power supply component 60 that supplies power to the light source device 100 and the liquid crystal panel 20. In addition, the main body 11 may include a frame 13, a frame intermediate mold 14, a chassis 15, and a rear cover 16 for supporting the liquid crystal panel 20, the light source device 100, the control component 50, and the power supply component 60.

[0054] The light source device 100 may include a point light source that emits white light. In addition, the light source device 100 may refract, reflect, and scatter the light emitted from the point light source to convert it into uniform surface light. Thus, the light source device 100 can emit uniform surface light forward by refracting, reflecting, and scattering the light emitted from the point light source.

[0055] The light source device 100 will be described in more detail below.

[0056] The liquid crystal panel 20 is disposed in front of the light source device 100 and blocks or transmits the light emitted from the light source device 100 to form an image I.

[0057] The front surface of the liquid crystal panel 20 forms the screen 12 of the display device 10 described above, and the liquid crystal panel 20 can form a plurality of pixels P. In the liquid crystal panel 20, the plurality of pixels P can respectively and independently block or transmit the light of the light source device 100. In addition, the light transmitted by the plurality of pixels P can form an image I to be displayed on the screen S.

[0058] For example, as Figure 3 shown, the liquid crystal panel 20 may include a first polarizing film 21, a first transparent substrate 22, a pixel electrode 23, a thin film transistor 24, a liquid crystal layer 25, a common electrode 26, a color filter 27, a second transparent substrate 28, and a second polarizing film 29.

[0059] The first transparent substrate 22 and the second transparent substrate 28 can fixedly support the pixel electrode 23, the thin film transistor 24, the liquid crystal layer 25, the common electrode 26, and the color filter 27. Such first transparent substrate 22 and second transparent substrate 28 can be made of tempered glass or transparent resin.

[0060] The first polarizing film 21 and the second polarizing film 29 are disposed outside the first transparent substrate 22 and the second transparent substrate 28. The first polarizing film 21 and the second polarizing film 29 can respectively transmit specific polarized light and block (reflect or absorb) other polarized light. For example, the first polarizing film 21 can transmit polarized light in the first direction and block (reflect or absorb) other polarized light. In addition, the second polarizing film 29 can transmit polarized light in the second direction and block (reflect or absorb) other polarized light. At this time, the first direction and the second direction can be orthogonal to each other. Therefore, the polarized light passing through the first polarizing film 21 cannot directly pass through the second polarizing film 29.

[0061] The color filter 27 can be disposed inside the second transparent substrate 28. For example, the color filter 27 may include a red color filter 27R that transmits red light, a green color filter 27G that transmits green light, and a blue color filter 27G that transmits blue light. In addition, the red color filter 27R, the green color filter 27G, and the blue color filter 27B can be arranged side by side with each other. The area occupied by the color filter 27 corresponds to the pixel P described above. The area occupied by the red color filter 27R corresponds to the red sub-pixel P R , the area occupied by the green color filter 27G corresponds to the green sub-pixel P G , and the area occupied by the blue color filter 27B corresponds to the blue sub-pixel P B .

[0062] The pixel electrode 23 can be disposed on the inner side of the first transparent substrate 22, and the common electrode 26 can be disposed on the inner side of the second transparent substrate 28. The pixel electrode 23 and the common electrode 26 can be formed of a conductive metal material and can generate an electric field for changing the arrangement of the liquid crystal molecules 115a that constitute the liquid crystal layer 25 described below.

[0063] A thin film transistor (TFT: Thin Film Transistor) 24 is disposed on the inner side of the second transparent substrate 22. The thin film transistor 24 can be turned on (closed) or off (opened) by the image data provided from the panel driver 30. Further, an electric field can be formed or eliminated between the pixel electrode 23 and the common electrode 26 according to whether the thin film transistor 24 is turned on (closed) or off (opened).

[0064] The liquid crystal layer 25 is formed between the pixel electrode 23 and the common electrode 26 and is filled with liquid crystal molecules 25a. The liquid crystal can exhibit an intermediate state between a solid (crystal) and a liquid. The liquid crystal can exhibit optical properties according to changes in the electric field. For example, in the liquid crystal, the direction of alignment of the molecules constituting the liquid crystal can change according to changes in the electric field. Thus, the optical properties of the liquid crystal layer 25 can be changed according to the presence or absence of an electric field passing through the liquid crystal layer 25. For example, the liquid crystal layer 25 can rotate the polarization direction of light around the optical axis according to the presence or absence of an electric field. Thus, the polarized light passing through the first polarizing film 21 can rotate the polarization direction during passing through the liquid crystal layer 25 and pass through the second polarizing film 29.

[0065] On one side of the liquid crystal panel 20, there are provided a cable 20a for sending image data to the liquid crystal panel 20 and a display driver integrated circuit (DDI: Display Driver Integrated Circuit) 30 (hereinafter referred to as “panel driver”) that processes digital image data and outputs an analog image signal.

[0066] The cable 20a can be electrically connected between the control component 50 / power supply component 60 and the panel driver 30, and can also be electrically connected between the panel driver 30 and the liquid crystal panel 20. The cable 20a can include a flexible flat cable or a film cable that can be bent, etc.

[0067] The panel driver 30 can receive image data and power from the control component 50 / power supply component 60 through the cable 20a. Further, the panel driver 30 can provide image data and drive current to the liquid crystal panel 20 through the cable 20a.

[0068] In addition, the cable 20a and the panel driver 30 may be integrally implemented as a flexible printed circuit (FPC), a chip on film (COF), a tape carrier package (TCP), etc. In other words, the panel driver 30 may be disposed on the cable 20b. However, it is not limited thereto, and the panel driver 30 may be provided on the liquid crystal panel 20.

[0069] The control component 50 may include a control circuit that controls the operations of the liquid crystal panel 20 and the light source device 100. For example, the control circuit may process video signals and / or audio signals received from an external content source. The control circuit may send image data to the liquid crystal panel 20 and may send dimming data to the light source device 100.

[0070] The power supply component 60 may include a power supply circuit that supplies power to the liquid crystal panel 20 and the light source device 100. The power supply circuit may supply power to the control component 50, the light source device 100, and the liquid crystal panel 20.

[0071] The control component 50 and the power supply component 60 may be implemented as a printed circuit board and various circuits mounted on the printed circuit board. For example, the power supply circuit may include capacitors, coils, resistive elements, processors, etc., and a power supply circuit board on which these are mounted. In addition, the control circuit may include a memory, a processor, and a control circuit board on which these are mounted.

[0072] Figure 4 An example of the light source device 100 included in the display device according to an embodiment is shown.

[0073] As Figure 4 shown, the light source device 100 may include a light source module 110 that generates light, a reflector 120 that reflects light, a diffuser plate 130 that uniformly diffuses light, and an optical sheet 140 that enhances the brightness of the emitted light.

[0074] The light source module 110 may include a plurality of light sources 111 that emit light and a substrate 112 that supports / fixes the plurality of light sources 111.

[0075] The plurality of light sources 111 may be arranged in a predetermined pattern so that light is emitted with uniform brightness. The plurality of light sources 111 may be arranged such that the distance between one light source and its adjacent light sources is the same.

[0076] For example, as Figure 4 shown, the plurality of light sources 111 may be arranged in rows and columns. For example, the plurality of light sources 111 may be arranged such that four adjacent light sources form a substantially square. In addition, any one light source may be arranged adjacent to four light sources, and the distance between one light source and its adjacent four light sources may be substantially the same.

[0077] In addition, according to an embodiment, a plurality of light sources 111 may be arranged such that three adjacent light sources form a substantially equilateral triangle. At this time, one light source may be arranged adjacent to six light sources. In addition, the distance between one light source and the six light sources adjacent thereto may be substantially the same.

[0078] However, the arrangement of the plurality of light sources 111 is not limited to the arrangement described above, and the plurality of light sources 111 may be arranged in various ways so that light is emitted with uniform brightness.

[0079] When power is supplied, the light source 111 may be an element capable of emitting monochromatic light (light of a specific wavelength, for example, blue light) or white light (for example, light obtained by mixing red light, green light, and blue light) in various directions. For example, the light source 111 may include a light emitting diode (LED: Light Emitting Diode). The light emitting diode may be implemented in various sizes, for example, may include a Mini LED and / or a Micro LED.

[0080] The substrate 112 may fix the plurality of light sources 111 so that the positions of the light sources 111 do not change. In addition, the substrate 112 may supply power for the light sources 111 to emit light to each light source 111.

[0081] The substrate 112 may fix the plurality of light sources 111, and may include a synthetic resin and / or tempered glass and / or a printed circuit board (PCB: Printed Circuit Board) formed with conductive power supply lines for supplying power to the light sources 111.

[0082] According to various embodiments, the substrate 112 may include a multi-layer printed circuit board (Multi-Layer PCB) having a plurality of layers.

[0083] According to various embodiments, the substrate 112 may be a single-sided printed circuit board including one layer.

[0084] On the substrate 112, various types of signal lines (wiring) for controlling the light sources 111 may be formed.

[0085] The reflector 120 may reflect the light emitted from the plurality of light sources 111 forward or in a direction approximate to the front.

[0086] In the reflector 120, a plurality of through holes 120a are formed at positions corresponding to each of the plurality of light sources 111 of the light source module 110. In addition, the light sources 111 of the light source module 110 may protrude forward of the reflector 120 through the through holes 120a.

[0087] For example, during the assembly of the reflector 120 and the light source module 110, a plurality of light sources 111 of the light source module 110 are inserted into a plurality of through holes 120a formed in the reflector 120. Thus, although the substrate 112 of the light source module 110 is located behind the reflector 120, a plurality of light sources 111 of the light source module 110 can be located in front of the reflector 120.

[0088] Thus, a plurality of light sources 111 can emit light from in front of the reflector 120.

[0089] A plurality of light sources 111 can emit light in various directions from in front of the reflector 120. Light can be emitted not only from the light sources 111 toward the diffusion plate 130, but also from the light sources 111 toward the reflector 120, and the reflector 120 can reflect the light emitted toward the reflector 120 toward the diffusion plate 130.

[0090] The light emitted from the light sources 111 passes through various objects such as the diffusion plate 130 and the optical sheet 140. When the light passes through the diffusion plate 130 and the optical sheet 140, a part of the incident light is reflected on the surfaces of the diffusion plate 130 and the optical sheet 140. The reflector 120 can reflect the light reflected by the diffusion plate 130 and the optical sheet 140.

[0091] The diffusion plate 130 can be disposed in front of the light source module 110 and the reflector 120, and can uniformly disperse the light emitted from the light sources 111 of the light source module 110.

[0092] As described above, a plurality of light sources 111 are located at various positions behind the light source device 100. Although a plurality of light sources 111 are arranged at equal intervals behind the light source device 100, uneven brightness may occur depending on the positions of the plurality of light sources 111.

[0093] The diffusion plate 130 can diffuse the light emitted from a plurality of light sources 111 within the diffusion plate 130 to eliminate the uneven brightness caused by the plurality of light sources 111. In other words, the diffusion plate 130 can uniformly emit the uneven light of the plurality of light sources 111 to the front surface.

[0094] The optical sheet 140 can include a variety of sheets for improving brightness and brightness uniformity. For example, the optical sheet 140 can include a diffusion sheet 141, a first prism sheet 142, a second prism sheet 143, a reflective polarizing film 144, etc.

[0095] The diffusion sheet 141 diffuses light for the sake of brightness uniformity. The light emitted from the light sources 111 can be diffused by the diffusion plate 130 and can be diffused again by the diffusion sheet 141 included in the optical sheet 140.

[0096] The first prism sheet 142 and the second prism sheet 143 can increase the brightness by aggregating the light diffused by the diffusion sheet 141. The first prism sheet 142 and the second prism sheet 143 include a prism pattern in the shape of a triangular prism, and the prism pattern can be formed by arranging a plurality of them adjacent to each other to form a plurality of bands.

[0097] The reflective polarizing plate 144, which is a type of polarizing film, can transmit a part of the incident light and reflect the other part to improve the brightness. For example, it can transmit polarized light having the same direction as the predetermined polarization direction of the reflective polarizing plate 144, and can reflect polarized light having a direction different from the polarization direction of the reflective polarizing plate 144. In addition, the light reflected by the reflective polarizing plate 144 can be reused inside the light source device 100, and the brightness of the display device 10 can be increased by this light recycle.

[0098] The optical sheet 140 is not limited to Figure 4 the sheet or film shown, and may include more types of sheets or films such as a protective sheet.

[0099] The light source device 100 may include a plurality of light sources 111, and can diffuse the light emitted from the plurality of light sources 111 to output surface light. The liquid crystal panel 20 may include a plurality of pixels, and can control the plurality of pixels so that each of the plurality of pixels transmits or blocks light. An image can be formed by transmitting the light of each of the plurality of pixels.

[0100] At this time, the display device 10 can perform local dimming that changes the brightness of the light in each area of the light source device 100 in association with the output image, so as to improve the power consumption while increasing the contrast ratio.

[0101] For example, the display device 10 can reduce the brightness of the light of the light source 111 corresponding to the dark part of the image of the light source device 100 to make the dark part of the image darker, and can increase the brightness of the light of the light source 111 corresponding to the bright part of the image of the light source device 100 to make the bright part of the image brighter. Accordingly, the contrast ratio or the contrast between light and dark of the image can be improved.

[0102] The display device 10 can divide the light source device 100 into a plurality of blocks, and can independently adjust the current according to the input image of each block. The image transmission of the display device 10 can be performed by using a method driven by local dimming for each frame, and the current drive is adjusted according to the number of blocks of the light sources 111 divided in the light source device 100.

[0103] As a result, the display device 10 can effectively improve the contrast ratio by reducing the current supplied to the dimming blocks corresponding to the dark areas of the input image and increasing the current supplied to the dimming blocks corresponding to the bright areas of the input image. The dimming blocks 200 can be disposed on the first side of the substrate 112.

[0104] For local dimming, the plurality of light sources 111 included in the light source device 100 can be divided into a plurality of dimming blocks 200. For example, as Figure 5 shown, the plurality of dimming blocks 200 can be configured with 5 rows and 12 columns and set to a total of 60. However, the number of dimming blocks 200 is not limited to the above example.

[0105] Figure 5 FIG. is a diagram showing that a plurality of light sources in a display device according to an embodiment are divided into a plurality of dimming blocks.

[0106] Referring to Figure 5 , each of the plurality of dimming blocks 200 may include at least one light source 111. The light source device 100 can supply the same driving current to the light sources 111 belonging to the same dimming block 200, and the light sources 111 belonging to the same dimming block 200 can emit light of the same brightness.

[0107] In addition, the light source device 100 can supply different driving currents to the light sources 111 belonging to different dimming blocks 200 according to the dimming data, and the light sources 111 belonging to different dimming blocks 200 can emit light of different brightnesses.

[0108] For example, each of the plurality of dimming blocks 200 may include N×M light sources arranged in an N×M matrix form (N and M are positive integers). The N×M matrix represents a matrix having N rows and M columns.

[0109] Since each light source 111 includes a light emitting diode, each of the plurality of dimming blocks 200 may include N×M light emitting diodes. According to various embodiments, each light source 111 may further include an optical dome covering the light emitting diode. The optical dome can cover the light emitting diode. The optical dome can prevent or suppress damage to the light emitting diode caused by external mechanical action and / or damage to the light emitting diode caused by chemical action.

[0110] The thickness of the optical device 100 can also be reduced, so that the thickness of the display device 10 is reduced. To reduce the thickness of the optical device 100, each of the plurality of light sources 111 is thinned and its structure is simplified.

[0111] The light-emitting diodes constituting the light source 111 may be directly attached to the substrate 112 in a chip-on-board (COB) manner. For example, the light source 111 may include a light-emitting diode 190 in which a light-emitting diode chip or die is directly attached to the substrate 112 without additional packaging.

[0112] The light-emitting diodes constituting the light source 111 may be made into a flip-chip type. When attaching a light-emitting diode, which is a semiconductor element, to the substrate 112 in a flip-chip type, the electrode pattern of the semiconductor element may be directly welded to the substrate 112 without using an intermediate medium such as a metal lead (wire) or a ball grid array (BGA). Thus, since the metal lead (wire) or the ball grid array is omitted, miniaturization of the light source 111 including the flip-chip type light-emitting diodes can be achieved.

[0113] As described above, the flip-chip type light-emitting diode 190 directly welded to the substrate 112 in a chip-on-board manner has been explained, but the light source 111 is not limited to the flip-chip type light-emitting diodes. For example, the light source 111 may include packaged light-emitting diodes.

[0114] A plurality of dimming blocks 200 may be arranged on the substrate 112. That is, N×M light-emitting diodes may be arranged on the substrate 112.

[0115] Figure 6 is a perspective view of a light source included in a light source device according to an embodiment. Figure 7 is Figure 6 an exploded perspective view of the light source shown. Figure 8 is along Figure 6 the side sectional view taken along the A-A' direction shown. In addition, Figure 8 represents Figure 6 the path of light in the light source shown. Represents Figure 5 the path of light in the light source shown.

[0116] Referring to Figure 6 、 Figure 7 and Figure 8 , the light source module 110 includes a plurality of light sources 111. The plurality of light sources 111 may protrude to the front of the reflector 120 through the through holes 120a from the rear of the reflector 120. Therefore, a part of the light source 111 and the substrate 112 may be exposed toward the front of the reflector 120 through the through holes 120a.

[0117] The light source 111 may include an electro / mechanical structure located in a region defined by the through-hole 120a of the reflective sheet 120. For example, each of the plurality of light sources 111 includes a light-emitting diode 210 and an optical dome 220.

[0118] In order to improve the uniformity of the surface light emitted by the light source device 100 and to improve the contrast based on local dimming, the number of light sources 111 may be increased.

[0119] The light-emitting diode 210 may include a P-type semiconductor and an N-type semiconductor for emitting light by recombination of holes and electrons. In addition, a pair of electrodes 210a for supplying holes and electrons to the P-type semiconductor and the N-type semiconductor, respectively, may be provided in the light-emitting diode 210.

[0120] The light-emitting diode 210 may convert electrical energy into light energy. In other words, the light-emitting diode 210 may emit light with a maximum intensity at a predetermined wavelength at which power is supplied. For example, the light-emitting diode 210 may emit blue light having a peak at a wavelength presenting blue color (e.g., a wavelength between 450 nm and 495 nm).

[0121] The light-emitting diode 210 may be directly attached to the substrate 112 in a chip-on-board (COB) manner. In other words, the light source 111 may include a light-emitting diode 210 in which a light-emitting diode chip or die is directly attached to the substrate 112 without additional packaging.

[0122] In order to reduce the area occupied by the light-emitting diode 210, the light-emitting diode 210 may be manufactured as a flip-chip type that does not include a Zener diode. When attaching the light-emitting diode, which is a semiconductor element, to the substrate 112, the flip-chip type light-emitting diode 210 may directly fuse the electrode pattern of the semiconductor element to the substrate 112 without using an intermediate medium such as a metal lead (wire) or a ball grid array (BGA).

[0123] Thus, since the metal lead (wire) or the ball grid array is omitted, miniaturization of the light source 111 including the flip-chip type light-emitting diode 210 can be achieved.

[0124] For miniaturization of the light source 111, a light source module 110 may be fabricated in which a flip-chip type light-emitting diode 210 is attached to the substrate 112 in a chip-on-board manner.

[0125] As described above, the flip-chip type light emitting diode 190 directly welded to the substrate 112 in the chip-on-board manner has been described, but the light source 111 is not limited to the flip-chip type light emitting diode. For example, the light source 111 may include a packaged type light emitting diode.

[0126] On the substrate 112, a power feeding line 230 and a power feeding pad 240 for supplying power to the light emitting diode 210 may be provided.

[0127] On the substrate 112, a power feeding line 230 for supplying an electrical signal and / or power from the control component 50 and / or the power supply component 60 to the light emitting diode 210 is provided.

[0128] As Figure 8 shown, the substrate 112 may be formed by alternately stacking a non-conductive insulation layer 251 and a conductive conduction layer 252.

[0129] The insulation layer 251 may include a first surface and a second surface, and the conduction layer may also include a first surface and a second surface. The conduction layer 252 may be stacked on the first surface of the insulation layer 251.

[0130] According to various embodiments, a conduction layer 252 may not be disposed on the second surface of the insulation layer 251. That is, in one embodiment, the substrate 112 may be a single-sided PCB.

[0131] In the case where the insulation layer 251 and the conduction layer 252 are alternately stacked, each conduction layer 252 may correspond to each layer of the multilayer printed circuit board. That is, in one embodiment, the substrate 112 may be a multilayer PCB.

[0132] A line or pattern for passing power and / or an electrical signal is formed in the conduction layer 252. The conduction layer 252 may be formed of various conductive materials. For example, the conduction layer 252 may be formed of various metal materials such as copper (Cu), tin (Sn), aluminum (Al), or an alloy thereof. The conduction layer 252 may be stacked on one surface of the insulation layer 251.

[0133] The dielectric of the insulation layer 251 may insulate the lines or patterns of the conduction layer 252. The insulation layer 251 may be formed of a dielectric for electrical insulation (for example, FR-4).

[0134] The insulation layer 251 may include at least one through hole. The conduction layer 252 stacked on the first surface of the insulation layer 251 and the conduction layer 252 provided on the second surface of the insulation layer 251 may be electrically connected through at least one through hole.

[0135] The feed line 230 can be implemented by a line or pattern formed in the conductive layer 252. The feed line 230 can be electrically connected to the light-emitting diode 210 through the feed pad 240. The feed pad 240 can be formed by exposing the feed line 230 to the outside.

[0136] A protection layer 253 for preventing or suppressing damage caused by external impact and / or damage caused by chemical action (e.g., corrosion, etc.) and / or damage caused by optical action can be formed on the outermost contour of the substrate 112. The protection layer 253 can include a solder mask (PSR).

[0137] As Figure 8 shown, the protection layer 253 can cover the feed line 230 to prevent the feed line 230 from being exposed to the outside.

[0138] In order to make the feed line 230 in electrical contact with the light-emitting diode 210, a window for exposing a part of the feed line 230 to the outside can be formed in the protection layer 253. A part of the feed line 230 exposed through the window of the protection layer 253 can form the feed pad 240.

[0139] A conductive adhesive substance 240a for making electrical contact between the feed line 230 exposed to the outside and the electrode 210a of the light-emitting diode 210 is coated on the feed pad 240. The conductive adhesive substance 240a can be coated within the window of the protection layer 253.

[0140] The electrode 210a of the light-emitting diode 210 can be in contact with the conductive adhesive substance 240a, and the light-emitting diode 210 can be electrically connected to the feed line 230 through the conductive adhesive substance 240a.

[0141] For example, the conductive adhesive substance 240a can include solder having conductivity. However, it is not limited thereto, and the conductive adhesive substance 240a can include electrically conductive epoxy adhesives.

[0142] Electric power can be supplied to the light-emitting diode 210 through the feed line 230 and the feed pad 240, and if power is supplied, the light-emitting diode 210 can emit light. A pair of feed pads 240 respectively corresponding to a pair of electrodes 210a provided in the flip-chip type light-emitting diode 210 can be provided.

[0143] The optical dome 220 can cover the light-emitting diode 210. The optical dome 220 can prevent or inhibit damage to the light-emitting diode 210 caused by external mechanical action and / or damage to the light-emitting diode 210 caused by chemical action.

[0144] For example, the optical dome 220 can have a dome shape obtained by cutting a sphere into a plane that does not include its center, or can have a hemispherical shape obtained by cutting a sphere into a plane that includes its center. For example, the vertical cross-section of the optical dome 220 can be arcuate or semi-circular.

[0145] The optical dome 220 can be made of silicone resin or epoxy resin. For example, molten silicone resin or epoxy resin can be discharged onto the light-emitting diode 210 through a nozzle or the like, and then the discharged silicone resin or epoxy resin is cured to form the optical dome 220.

[0146] Therefore, the shape of the optical dome 220 can be variously changed according to the viscosity of the liquid silicone resin or epoxy resin. For example, if the optical dome 220 is manufactured using silicone having a thixotropic index of about 2.7 to 3.3 (e.g., 3.0), an optical dome 220 having a dome ratio representing the ratio of the height of the dome to the diameter of the bottom surface of the dome (height of the dome / diameter of the bottom surface) of about 2.5 to 3.1 (e.g., 2.8) can be formed. For example, the optical dome 220 manufactured using silicone having a thixotropic index of about 2.7 to 3.3 (e.g., 3.0) can have a bottom surface diameter of about 2.5 mm and a height of about 0.7 mm.

[0147] The optical dome 220 can be optically transparent or translucent. The light emitted from the light-emitting diode 210 can pass through the optical dome 220 and be emitted to the outside.

[0148] At this time, the dome-shaped optical dome 220 can refract light like a lens. For example, the light emitted from the light-emitting diode 210 can be dispersed by being refracted by the optical dome 220.

[0149] In this way, the optical dome 220 can not only protect the light-emitting diode 210 from external mechanical action and / or chemical action or electrical action, but also disperse the light emitted from the light-emitting diode 210.

[0150] An antistatic component for protecting the light-emitting diode 210 from electrostatic discharge is formed near the optical dome 220. The antistatic component can absorb the electric shock caused by the electrostatic discharge generated near the optical dome 220.

[0151] Refer to Figure 8, the light source module 110 may include a non-conductive insulating layer 251, a conductive layer 252 stacked on the front surface of the insulating layer 251 and having a power feeding line 230, and a non-conductive protective layer 253 stacked on the front surface of the conductive layer 252.

[0152] The light emitting diode 210 may be disposed on the protective layer 253. More specifically, the light emitting diode 210 may be disposed on the front surface of the substrate 112 to cover a window formed on the protective layer 253.

[0153] A pair of power feeding pads 240 may be formed on the conductive layer 252 and connected to the power feeding line 230. The pair of power feeding pads 240 may be electrically connected to the light emitting diode 210 through a window formed in the protective layer 253. The pair of power feeding pads 240 may be disposed separately from each other.

[0154] The light source module 110 may include a reflection assisting layer 260.

[0155] In one disclosed embodiment, by forming the reflection assisting layer 260 together with the protective layer 253 between the pair of power feeding pads 240, there is an effect of being able to reduce the defect rate caused by the size asymmetry of the pair of power feeding pads 240.

[0156] The light emitting diode 210 may include a DBR layer 211.

[0157] The DBR layer 211 is a multilayer mirror formed of two substances having different refractive indices from each other. Due to the refractive index difference of each substance, Fresnel reflection occurs at each interface of the DBR layer 211. Therefore, the light incident on the DBR layer can be reflected at a wide range of angles, and thus the light emission angle of the light emitting diode 210 can be set to about 165 degrees or more.

[0158] The light emitted from the light emitting diode 210 may be reflected by the DBR layer 211 and then re-reflected by the reflection assisting layer 260. Thereby, it is possible to prevent the loss of light traveling into the space between the pair of power feeding pads 240.

[0159] Specifically, the reflection assisting layer 260 may be provided with a material having a higher reflectivity than the insulating layer 251, and may cover the front of the insulating layer 251, thereby minimizing the light loss caused by the light traveling to the rear of the light emitting diode 210 being absorbed by the insulating layer 251.

[0160] Figure 9 is a control block diagram of a display device according to an embodiment.

[0161] Refer to Figure 9, the display device 10 may include a content receiving unit 80, an image processing unit 90, a panel driver 30, a liquid crystal panel 20, a dimming driver 170, and a light source device 100.

[0162] The content receiving unit 80 may include a receiving terminal 81 for receiving content including a video signal and / or an audio signal from a content source and a tuner 82.

[0163] The receiving terminal 81 may receive a video signal and an audio signal from a content source through a cable. For example, the receiving terminal 81 may include a component (YPbPr / RGB) terminal, a composite video blanking and sync (CVBS) terminal, an audio terminal, a high definition multimedia interface (HDMI) terminal, a universal serial bus (USB) terminal, etc.

[0164] The tuner 82 may receive a broadcast signal from a broadcast receiving antenna or a cable. In addition, the tuner 82 may extract the broadcast signal of a channel selected by a user from the broadcast signals. For example, the tuner 82 may pass the broadcast signal having a frequency corresponding to the channel selected by the user among a plurality of broadcast signals received through the broadcast receiving antenna or the cable, and cut off the broadcast signals having other frequencies.

[0165] In this way, the content receiving unit 80 may receive a video signal and an audio signal from a content source through the receiving terminal 81 and / or the tuner 82. The content receiving unit 80 may output the video signal and / or the audio signal received through the receiving terminal 81 and / or the tuner 82 to the image processing unit 90.

[0166] The image processing unit 90 may include a processor 91 for processing image data and a memory 92 for memorizing / storing programs and data for processing the image data.

[0167] The memory 92 may store programs and data for processing a video signal and / or an audio signal. In addition, the memory 92 may temporarily memorize the data generated during the processing of the video signal and / or the audio signal.

[0168] The memory 92 may include non-volatile memories such as a read only memory and a flash memory, and volatile memories such as a static random access memory (S-RAM) and a dynamic random access memory (Dynamic Random Access Memory).

[0169] The processor 91 can receive a video signal and / or an audio signal from the content receiving unit 80. The processor 91 can decode the video signal into image data. The processor 91 can generate dimming data from the image data. In addition, the processor 91 can output the image data and the dimming data to the panel driver 30 and the dimming driver 170 respectively.

[0170] In this way, the image processing unit 90 can generate image data and dimming data from the video signal obtained by the content receiving unit 80. In addition, the image processing unit 90 can send the image data and the dimming data to the liquid crystal panel 20 and the light source device 100 respectively.

[0171] The image data can include information about the intensity of light transmitted by each of a plurality of pixels (or sub-pixels) included in the liquid crystal panel 20. The image data can be provided to the liquid crystal panel 20 via the panel driver 30.

[0172] The liquid crystal panel 20 includes a plurality of pixels capable of transmitting or blocking light, and the plurality of pixels are arranged in a matrix form. In other words, the plurality of pixels can be arranged in a plurality of rows and a plurality of columns.

[0173] The panel driver 30 can receive image data from the image processing unit 90. The panel driver 30 can drive the liquid crystal panel 20 according to the image data. In other words, the panel driver 30 can convert the image data (hereinafter referred to as "digital image data") as a digital signal into an analog image signal as an analog voltage signal. The panel driver 30 can provide the converted analog image signal to the liquid crystal panel 20. The optical properties (e.g., light transmittance) of the plurality of pixels included in the liquid crystal panel 20 can change according to the analog image signal.

[0174] For example, the panel driver 30 can include a timing controller, a data driver, a scan driver, etc.

[0175] The timing controller can receive image data from the image processing unit 90. The timing controller can output the image data and drive control signals to the data driver and the scan driver. The drive control signals can include a scan control signal and a data control signal. The scan control signal and the data control signal can be used to control the operations of the scan driver and the data driver respectively.

[0176] The scan driver can receive a scan control signal from the timing controller. The scan driver can activate the input of one row among multiple rows in the liquid crystal panel 20 according to the scan control signal. In other words, the scan driver can convert the pixels in one row among the multiple pixels arranged in multiple rows and multiple columns into a state capable of receiving an analog image signal. At this time, except for the pixels whose inputs are activated by the scan driver, other pixels may not be able to receive the analog image signal.

[0177] The data driver can receive image data and a data control signal from the timing controller. The data driver can output the image data to the liquid crystal panel 20 according to the data control signal. For example, the data driver can receive digital image data from the timing controller. The data driver can convert the digital image data into an analog image signal. In addition, the data driver can provide the analog image signal to the pixels included in one row whose inputs are activated by the scan driver. At this time, the pixels whose inputs are activated by the scan driver can receive the analog image signal. The optical properties (e.g., light transmittance) of the pixels whose inputs are activated change according to the received analog image signal.

[0178] In this way, the panel driver 30 can drive the liquid crystal panel 20 according to the image data. Thus, an image corresponding to the image data can be displayed on the liquid crystal panel 20.

[0179] In one embodiment, the dimming data may include information about the intensity of light emitted by each of the multiple light sources 111 (or multiple dimming blocks 200) included in the light source device 100. The dimming data can be provided to the light source device 100 via the dimming driver 170.

[0180] The light source device 100 may include multiple light sources 111 that emit light. The multiple light sources 111 are arranged in a matrix form. In other words, the multiple light sources 111 can be arranged in multiple rows and multiple columns.

[0181] The light source device 100 can be divided into multiple dimming blocks 200. In addition, each of the multiple dimming blocks 200 may include at least one light source.

[0182] The light source device 100 can diffuse the light emitted from the multiple light sources 111 and output surface light. The liquid crystal panel 20 may include multiple pixels, and can control the multiple pixels so that each of the multiple pixels transmits or blocks light. An image can be formed by the light passing through each of the multiple pixels.

[0183] At this time, the light source device 100 can turn off the multiple light sources corresponding to the dark part of the image to make the dark part of the image darker. Thus, the dark part of the image becomes darker, thereby improving the contrast ratio of the image.

[0184] Thus, the operation in which the light source device 100 controls the plurality of light sources to emit light from the regions corresponding to the bright portions of the image and controls the plurality of light sources not to emit light from the regions corresponding to the dark portions of the image is hereinafter referred to as "local dimming".

[0185] For local dimming, the plurality of light sources 111 included in the light source device 100 may be divided into a plurality of dimming blocks 200 as Figure 5 shown. Although Figure 5 60 dimming blocks in 5 rows and 12 columns are shown, the number and arrangement of the dimming blocks are not limited to Figure 5 those shown.

[0186] Each of the plurality of dimming blocks 200 may include at least one light source 111. The light source device 100 may supply the same drive current to the light sources belonging to the same dimming block 200, and the light sources belonging to the same dimming block 200 may emit light of the same brightness. For example, the light sources belonging to the same dimming block 200 may be connected in series with each other, whereby the light sources belonging to the same dimming block 200 may be supplied with the same drive current.

[0187] In addition, the light source device 100 may further include a plurality of drive elements 300 that control the drive current supplied to the light sources included in each of the plurality of dimming blocks 200. The drive elements 300 may be provided corresponding to at least one dimming block 200 respectively. In other words, the drive elements 300 may drive the dimming blocks 200 respectively.

[0188] The drive element 300 may be a drive integrated circuit chip for driving the plurality of dimming blocks 200.

[0189] Thus, since the light sources 111 belonging to the dimming block 200 are connected in series with each other, the light sources 111 included in the dimming block 200 may operate integrally, and a light source block may be formed integrally.

[0190] Therefore, hereinafter, "supplying a drive current to a dimming block" may be interpreted to have the same meaning as "supplying a drive current to the light sources included in the dimming block".

[0191] Figure 5 Dimming blocks each having 9 light sources are shown, but the number and arrangement of the light sources included in each dimming block are not limited to Figure 5 those shown.

[0192] As described above, the image processing unit 90 can provide dimming data for local dimming to the light source device 100. The dimming data may include information on the brightness of each of the plurality of dimming blocks 200. For example, the dimming data may include information on the intensity of light output from the light sources included in each of the plurality of dimming blocks 200.

[0193] The image processing unit 90 can obtain dimming data from the image data.

[0194] The image processing unit 90 can convert the image data into dimming data in various ways. For example, the image processing unit 90 can divide the image I based on the image data into a plurality of image blocks. The number of the plurality of image blocks may be the same as the number of the plurality of dimming blocks 200, and each of the plurality of image blocks may correspond to the plurality of dimming blocks 200.

[0195] The image processing unit 90 can obtain the brightness values of the plurality of dimming blocks 200 from the image data of the plurality of image blocks. In addition, the image processing unit 90 can generate dimming data by combining the brightness values of the plurality of dimming blocks 200.

[0196] For example, the image processing unit 90 can obtain the brightness value of each of the plurality of dimming blocks 200 based on the maximum value among the brightness values of the pixels included in each image block.

[0197] One image block may include a plurality of pixels, and the image data of one image block may include the image data of the plurality of pixels (e.g., red data, green data, blue data, etc.). The image processing unit 90 can calculate the brightness value of each pixel based on the image data of each pixel.

[0198] The image processing unit 90 can determine the maximum value among the brightness values of each pixel included in the image block as the brightness value of the dimming block 200 corresponding to the image block. For example, the image processing unit 90 can determine the maximum value among the brightness values of the pixels included in the i-th image block as the brightness value of the i-th dimming block, and can determine the maximum value among the brightness values of the pixels included in the j-th image block as the brightness value of the j-th dimming block.

[0199] The image processing unit 90 can generate dimming data by combining the brightness values of the plurality of dimming blocks 200.

[0200] The dimming driver 170 can receive dimming data from the image processing unit 90. The dimming driver 170 can drive the light source device 100 according to the dimming data. Here, the dimming data may include information on the brightness of each of the plurality of dimming blocks 200 or information on the brightness of the light sources included in each of the plurality of dimming blocks 200.

[0201] For example, the dimming driver 170 may include a timing controller, a data driver, a scan driver, etc.

[0202] The dimming driver 170 may convert dimming data, which is a digital voltage signal, into an analog driving current.

[0203] For example, the dimming driver 170 may sequentially provide an analog dimming signal to driving elements 300 corresponding to the dimming blocks 200, respectively, in an active matrix manner.

[0204] The plurality of dimming blocks 200 may be divided into a plurality of groups. The driving current may be simultaneously supplied to the dimming blocks 200 belonging to the same group, and the driving current may be sequentially supplied to the dimming blocks 200 belonging to different groups at different times. The dimming driver 170 may activate the dimming blocks 200 belonging to one of the plurality of groups, and may provide an analog dimming signal to the activated dimming blocks 200. After that, the dimming driver 170 may activate the dimming blocks 200 belonging to another group, and may provide an analog dimming signal to the activated dimming blocks 200.

[0205] For example, the dimming blocks 200 located in the same row may belong to the same group, and the dimming blocks 200 located in different rows may belong to different groups, but the method of classifying the groups is not limited thereto. The dimming driver 170 may activate the dimming blocks 200 belonging to one group, and may provide an analog dimming signal to the activated dimming blocks 200. After that, the dimming driver 170 may activate the input of the dimming blocks 200 belonging to another row, and may provide an analog dimming signal to the dimming blocks 200 with the activated input.

[0206] In order to activate the dimming blocks 200 belonging to one of the plurality of groups, the dimming driver 170 may transmit a driving signal to the driving elements 300. The driving signal may be a signal for supplying power to the driving elements 300.

[0207] According to various embodiments, the driving signal may be directly transmitted from the dimming driver 170 to each of the plurality of dimming blocks 200, or may be transmitted from the driving elements 300 to each of the plurality of dimming blocks 200.

[0208] The driving circuit of each dimming block 200 may provide an analog driving current corresponding to the analog dimming signal to the light source module 110. The light source 111 included in the light source module 110 may emit light by the analog driving current. According to the dimming data, the light sources belonging to the same dimming block 200 may emit light of the same intensity. In addition, according to the dimming data, the light sources belonging to different dimming blocks 200 may emit light of different intensities from each other.

[0209] Figure 10 andFigure 11 Shows an example of a connection structure of a dimming driver, a driving element, and a dimming block according to an embodiment.

[0210] Referring to Figure 10 , each of the plurality of dimming blocks 200 may include a plurality of light sources (light-emitting diodes) 111 connected in series with each other.

[0211] In one embodiment, each of the plurality of dimming blocks 200 may receive a driving voltage V through a driving line 400 LED .

[0212] In one embodiment, each of the plurality of dimming blocks 200 may electrically connect a control line C to a driving element 300. The driving element 300 may control a driving current flowing in each of the plurality of dimming blocks 200 through the control line C.

[0213] Assuming that a dimming block 200 includes a first light-emitting diode, a second light-emitting diode, a third light-emitting diode, and a fourth light-emitting diode, the anode of the first light-emitting diode may be connected to the driving line 400, the cathode of the first light-emitting diode may be connected to the anode of the second light-emitting diode, the cathode of the second light-emitting diode may be connected to the anode of the third light-emitting diode, the cathode of the third light-emitting diode may be connected to the anode of the fourth light-emitting diode, and the cathode of the fourth light-emitting diode may be connected to the driving element 300 through the control line C.

[0214] That is, the first light source 111 in series connection among the plurality of light sources 111 included in a dimming block 200 and connected in series may be connected to the driving line 400 and receive the driving voltage V LED , and the last light source 111 in series connection may be connected to the driving element 300 through the control line C.

[0215] The driving element 300 may receive a power signal from the dimming driver 170 and may operate in response to the received power signal. The driving element 300 may receive a timing signal from the dimming driver 170 and may activate the plurality of dimming blocks 200 in response to the received timing signal.

[0216] The power signal may include a driving voltage for supplying power to the driving element 300.

[0217] In one embodiment, the dimming driver 170 may output a power signal through a power line P.

[0218] In one embodiment, the driving element 300 may receive a power signal through the power line P.

[0219] The driving element 300 can receive an analog dimming signal from the dimming driver 170 during the period when it is activated by the dimming driver 170 and store the received analog dimming signal. In addition, during the non-activated period, the plurality of driving elements 300 can supply a driving current corresponding to the stored analog dimming signal to the plurality of light sources (light-emitting diodes) 111.

[0220] In a state where the driving voltage V LED is applied to the plurality of dimming blocks 200, the driving element 300 can control the driving current supplied to each of the plurality of dimming blocks 200 through the control line C.

[0221] The analog dimming signal can include a data signal and / or a timing signal.

[0222] The data signal can include brightness value data corresponding to the plurality of dimming blocks 200, and the timing signal can include timing data for causing the plurality of dimming blocks 200 to operate based on the brightness value data corresponding to the plurality of dimming blocks 200.

[0223] The driving element 300 can activate the dimming blocks 200 arranged in a row among the plurality of dimming blocks 200 based on the timing control signal, and can control the driving current supplied to the activated dimming blocks 200 based on the data signal.

[0224] The display device 10 can include a timing line T for supplying a timing signal to the plurality of driving elements 300. The display device 10 can include a data line D for supplying a data signal to the plurality of driving elements 300.

[0225] In addition, the display device 10 can include a power supply line P for supplying a driving voltage to the plurality of driving elements 300.

[0226] The timing line T, the data line D, and the power supply line P can be formed on the substrate 112. According to various embodiments, the driving line 400 can be formed on the substrate 112.

[0227] In order to implement the driving in the active matrix method, the plurality of driving elements 300 can include circuits of various topologies.

[0228] For example, the plurality of driving elements 300 can each include a circuit with a 1C2T (one capacitor two transistor) topology. However, the circuit structure of the driving element 300 is not limited thereto. For example, the driving element 300 can include a circuit with a 3T1C topology with a transistor added for correcting the body effect of the driving transistor.

[0229] For example, the driving element 300 may be provided as a single chip integrated with a driving circuit. In other words, the driving circuit may be integrated into a semiconductor chip.

[0230] The dimming driver 170 may transmit dimming data corresponding to an input image to the plurality of driving elements 300 through the data line D.

[0231] In addition, the dimming driver 170 may transmit a timing signal corresponding to the light emission time points of the plurality of dimming blocks 200 to the plurality of driving elements 300 through the timing line T.

[0232] The plurality of driving elements 300 may control the driving current supplied to each of the plurality of dimming blocks 200 based on the dimming data and the timing signal.

[0233] In Figure 10 only a part of the plurality of dimming blocks 200 is shown. The display device 10 according to an embodiment requires more dimming blocks 200 for local dimming, driving elements 300, a power line P for transmitting a power signal to the driving elements 300, a data line D and a timing line T connecting the driving elements 300 and the dimming blocks 200, a driving line 400 for supplying power to the dimming blocks 200, and a control line C for controlling the dimming blocks 200.

[0234] Accordingly, it is necessary to simplify the layout of the data line D, the timing line T, the power line P, the control line C, and the driving line 400 on the substrate 112.

[0235] In the case where the data line D, the timing line T, the power line P, the control line C, and the driving line 400 cross each other on the substrate 112, a plurality of conductive layers 252 and insulating layers 251 would be required, and accordingly, the circuit complexity may increase.

[0236] Referring to Figure 11 according to various embodiments, the driving element 300 may be electrically connected to the anode of the light-emitting diode 111 included in the dimming block 200 through the control line C.

[0237] According to various embodiments, the driving line 400 may be electrically connected to the cathode of the light-emitting diode 111 included in the dimming block 200.

[0238] In one embodiment, the driving line 400 may be connected to the ground. In one embodiment, the light-emitting diode 111 may receive a predetermined voltage V LED . At this time, the driving line 400 may also be connected to the ground and may have a relatively low voltage value.

[0239] When the driving element 300 is electrically connected to the anode of the light-emitting diode 111 included in the dimming block 200 through the control line C, the driving element 300 can control the driving voltage applied to the anode of the light-emitting diode 111 through the control line C, thereby controlling the driving current applied to the dimming block 200.

[0240] Figure 12 Schematically shows a plurality of pins provided on a driving element and signal lines connected to each of the plurality of pins according to an embodiment.

[0241] Refer to Figure 12 , the driving element 300 according to an embodiment may be a driving integrated circuit chip. In one embodiment, the driving element may be directly attached to the substrate 112 by a chip-on-board (COB) method. In another embodiment, the driving element may also be formed on the substrate 112 on which a plurality of signal lines are formed.

[0242] Starting from this figure

[0243] The driving element 300 may include a plurality of pins TP1, TP2, PP1, PP2, DP1, DP2, CP. The plurality of pins TP1, TP2, PP1, PP2, DP1, DP2, CP may include at least one receiving pin TP1, PP1, DP1 for receiving signals and at least one transmitting pin TP2, PP2, DP2, CP for transmitting signals.

[0244] The plurality of pins may be electrically connected to at least one signal line T, P, D, C formed on the substrate 112.

[0245] At least one signal line T, P, D, C connected to the plurality of pins may include at least one of a timing line T, a data line D, and a power line P.

[0246] The plurality of pins TP1, TP2, PP1, PP2, DP1, DP2, CP may include at least one input pin TP1, PP1, DP1 respectively connected to at least one signal line T, P, D.

[0247] The plurality of pins TP1, TP2, PP1, PP2, DP1, DP2, CP may include at least one output pin TP2, PP2, DP2 respectively connected to at least one input pin TP1, PP1, DP1.

[0248] As an example, the plurality of pins may include a pair of pins TP1, TP2 connected to the timing line T.

[0249] The pair of pins TP1, TP2 connected to the timing line T may include an input pin TP1 and an output pin TP2.

[0250] The input pin TP1 and the output pin TP2 may be arranged opposite to each other. For example, in the case where the input pin TP1 is provided on the first side of the driving element 300, the output pin TP2 may be provided on the side opposite to the first side.

[0251] According to the present disclosure, the timing signal transmitted through the timing line T can be easily transmitted from one side of the driving element 300 to the other side of the driving element 300.

[0252] For example, as Figure 12 shown, the input pin TP1 may be provided on the left side (e.g., the first side portion or the second side portion) of the driving element 300, and the output pin TP2 may be provided on the right side (e.g., the second side portion or the first side portion) of the driving element 300, but the positions of the input pin TP1 and the output pin TP2 are not limited thereto.

[0253] According to various embodiments, the input pin TP1 may be provided on the right side (e.g., the first side portion or the second side portion) of the driving element 300, and the output pin TP2 may be provided on the left side (e.g., the second side portion or the first side portion) of the driving element 300.

[0254] A pair of pins DP1, DP2 connected to the data line D may include an input pin DP1 and an output pin DP2.

[0255] According to various embodiments, the data line D connected to one driving element 300 may be at least one.

[0256] In the case where there are multiple data lines D connected to one driving element 300, one driving element 300 may control the dimming blocks 200 arranged in multiple columns.

[0257] The input pin DP1 and the output pin DP2 may be arranged opposite to each other. For example, in the case where the input pin DP1 is provided on the first side of the driving element 300, the output pin DP2 may be provided on the side opposite to the first side.

[0258] According to the present disclosure, the data signal transmitted through the data line D can be easily transmitted from one side of the driving element 300 to the other side of the driving element 300.

[0259] For example, as Figure 12 shown, the input pin DP1 may be provided on the upper side (e.g., the second end portion) of the driving element 300, and the output pin DP2 may be provided on the lower side (e.g., the first end portion) of the driving element 300, and the positions of the input pin DP1 and the output pin DP2 are not limited thereto.

[0260] According to various embodiments, the input pin DP1 can be disposed on the lower side of the driving element 300, and the output pin DP2 can be disposed on the upper side of the driving element 300.

[0261] A pair of pins PP1 and PP2 connected to the power line P can include an input pin PP1 and an output pin PP2.

[0262] The input pin PP1 and the output pin PP2 can be arranged opposite to each other. For example, in the case where the input pin PP1 is disposed on the first side of the driving element 300, the output pin PP2 can be disposed on the opposite side of the first side.

[0263] According to the present disclosure, it is possible to easily transfer the power signal transmitted through the power line P from one side of the driving element 300 to the other side of the driving element 300.

[0264] For example, as Figure 12 shown, the input pin PP1 can be disposed on the right side of the driving element 300, and the output pin PP2 can be disposed on the left side of the driving element 300, but the positions of the input pin PP1 and the output pin PP2 are not limited thereto.

[0265] According to various embodiments, the input pin PP1 can be disposed on the left side of the driving element 300, and the output pin PP2 can be disposed on the right side of the driving element 300.

[0266] According to various embodiments, the plurality of pins TP1, TP2, PP1, PP2, DP1, DP2, CP can further include at least one control pin CP connected to the control line C.

[0267] In one embodiment, at least one control pin CP may not be disposed between the pair of pins TP1, TP2 connected to the timing line T and the pair of pins PP1, PP2 connected to the power line P.

[0268] For example, the input pin TP1 connected to the timing line T and the input pin PP1 connected to the power line P can be disposed between the plurality of control pins CP.

[0269] The output pin TP2 connected to the timing line T and the output pin PP2 connected to the power line P can be disposed between the plurality of control pins CP.

[0270] According to the present disclosure, in the absence of additional electronic components (e.g., jumper connectors), the control line C can be non-crossing with the timing line T and the power line P.

[0271] The positions of the plurality of pins DP1, DP2, TP1, TP2, PP1, PP2, CP disposed on the driving element 300 can be changed according to the layout design of the plurality of signal lines D, T, P, C.

[0272] In one embodiment, the driving element 300 may include at least one internal wiring ID, IT, IP. At least one internal wiring ID, IT, IP may electrically connect at least one input pin DP1, TP1, PP1 to at least one output pin DP2, TP2, PP2.

[0273] At least one internal wiring ID, IT, IP may be disposed inside the region defined by the driving element 300.

[0274] That is, at least one internal wiring ID, IT, IP is not formed on the substrate 112, but may be formed inside the driving element 300 by the internal design of the driving element 300.

[0275] At least one internal wiring ID, IT, IP may include an internal wiring ID that electrically connects the input pin DP1 to the output pin DP2.

[0276] The input pin DP1 and the output pin DP2 may be short-circuited to each other through the internal wiring ID.

[0277] The data signal input through the input pin DP1 may be output through the output pin DP2.

[0278] Both the line connected to the input pin DP1 and the line connected to the output pin DP2 may be defined as a data line D.

[0279] The data line D may transmit a data signal. As an example, the data line D may be connected to the dimming driver 170.

[0280] At least one internal wiring ID, IT, IP may include an internal wiring IT that electrically connects the input pin TP1 to the output pin TP2.

[0281] The input pin TP1 and the output pin TP2 may be short-circuited to each other through the internal wiring IT.

[0282] The timing signal input through the input pin TP1 may be output through the output pin TP2.

[0283] Both the line connected to the input pin TP1 and the line connected to the output pin TP2 may be defined as a timing line T.

[0284] The timing line T may transmit a timing signal. As an example, the timing line T may be connected to the dimming driver 170.

[0285] At least one internal wiring ID, IT, IP may include an internal wiring IP that electrically connects the input pin PP1 to the output pin PP2.

[0286] The input pin PP1 and the output pin PP2 may be short-circuited to each other by the internal wiring IP.

[0287] The power signal input through the input pin PP1 can be output through the output pin PP2.

[0288] Both a line connected to the input pin PP1 and a line connected to the output pin PP2 may be defined as a power line P.

[0289] The power line P can transmit a power signal.

[0290] According to the prior art, a plurality of signal lines formed on a substrate must cross each other, thereby requiring more layers of printed circuit boards or a greater number of jumper connectors.

[0291] According to the present disclosure, even if a line bypassing the driving element 300 is not formed on the printed circuit board, a signal received from one side of the driving element 300 can be transmitted to the other side of the driving element 300, thereby reducing the complexity of multiple signal lines.

[0292] Figure 13 , Figure 14 and Figure 15 An example of a connection relationship between driving elements according to an embodiment is schematically shown.

[0293] According to various embodiments, a plurality of driving elements 300 may be provided on the substrate 112 , and the driving elements 300 for controlling the dimming blocks 200 arranged in the same column as each other may be arranged in the same column as each other.

[0294] According to various embodiments, a plurality of driving elements 300 may be provided on the substrate 112 , and the driving elements 300 for controlling the dimming blocks 200 arranged in columns different from each other may be arranged in columns different from each other.

[0295] Figure 13 The connection relationship between the first drive elements and the second drive elements which are arranged in the same column as each other and adjacent to each other is shown.

[0296] Reference Figure 13 , as referenced Figure 12 As described above, each of the first driving element 300 a and the second driving element 300 b may include a plurality of pins DP1 , DP2 , TP1 , TP2 , PP1 , PP2 , and CP.

[0297] The second driving element 300b may be disposed at a lower end of the first driving element 300a.

[0298] According to various embodiments, the output pin DP2 of the first driving element 300 a may be electrically connected to the input pin DP1 of the second driving element 300 b .

[0299] For example, the output pin DP2 of the first driving element 300a can be electrically connected to the input pin DP1 of the second driving element 300b through the data line D formed on the substrate 112.

[0300] According to various embodiments, the input pin DP1 of the first driving element 300a can be electrically connected to the output pin DP2 of the driving element 300 arranged on the upper side of the first driving element 300a, or can also be electrically connected to the dimming driver.

[0301] According to various embodiments, the output pin DP2 of the second driving element 300b can be electrically connected to the input pin DP1 of the driving element 300 arranged on the lower side of the second driving element 300b, or can be connected to the ground when the second driving element 300b is the driving element 300 arranged at the lowermost end.

[0302] According to various embodiments, when the second driving element 300b is the driving element 300 arranged at the lowermost end, the second driving element 300b may not include the output pin DP2 either.

[0303] According to the present disclosure, data signals can be transmitted between the driving elements 300 arranged in the same column with the least number of data lines D.

[0304] Figure 14 The connection relationship between the first driving element 300a and the third driving element 300c arranged in different columns and adjacent to each other is shown.

[0305] According to various embodiments, the first driving element 300a and the third driving element 300c can be arranged in the same row with each other, or can also be arranged in different rows with each other.

[0306] Refer to Figure 14 As referred to Figure 12 As described, each of the first driving element 300a and the third driving element 300c may include a plurality of pins DP1, DP2, TP1, TP2, PP1, PP2, CP.

[0307] The third driving element 300c can be arranged on the side of the first driving element 300a.

[0308] According to various embodiments, the output pin TP2 of the first driving element 300a can be electrically connected to the input pin TP1 of the third driving element 300c.

[0309] For example, the output pin TP2 of the first driving element 300a can be electrically connected to the input pin TP1 of the third driving element 300c through the timing line T formed on the substrate 112.

[0310] Unlike Figure 14 from the situation shown, when the timing line T is formed from the right side of the substrate 112, the input pins TP1 of the first driving element 300a and the third driving element 300c can be provided on the right side edges of the first driving element 300a and the third driving element 300c. The output pins TP2 of the first driving element 300a and the third driving element 300c can be provided on the left side edges of the first driving element 300a and the third driving element 300c. Thus, the output pin TP2 of the third driving element 300c can be electrically connected to the input pin TP1 of the first driving element 300a.

[0311] According to various embodiments, the input pin TP1 of the first driving element 300a can be electrically connected to the output pin TP2 of the driving element 300 arranged on the left side of the first driving element 300a, or can be electrically connected to a dimming driver.

[0312] According to various embodiments, the output pin TP2 of the third driving element 300c can be electrically connected to the input pin TP1 of the driving element 300 arranged on the right side of the third driving element 300c, and when the third driving element 300c is the driving element 300 arranged on the rightmost side, it can also be connected to the ground.

[0313] According to various embodiments, when the third driving element 300c is the driving element 300 arranged on the rightmost side, the third driving element 300c may not include the output pin TP2 either.

[0314] According to the present disclosure, between the driving elements 300 arranged in different columns, timing signals can be transmitted using the least number of timing lines T.

[0315] According to various embodiments, the output pin PP2 of the third driving element 300c can be electrically connected to the input pin PP1 of the first driving element 300a.

[0316] For example, the output pin PP2 of the third driving element 300c can be electrically connected to the input pin PP1 of the first driving element 300a through the power supply line P formed on the substrate 112.

[0317] Unlike Figure 14In a different case as shown, when the power supply line P starts from the left side, the input pins PP1 of the first driving element 300a and the third driving element 300c can be arranged on the left side edges of the first driving element 300a and the third driving element 300c, and the output pins PP2 of the first driving element 300a and the third driving element 300c can be arranged on the right side edges of the first driving element 300a and the third driving element 300c. Thus, the output pin PP2 of the first driving element 300a can be electrically connected to the input pin PP1 of the third driving element 300c.

[0318] According to various embodiments, the input pin PP1 of the third driving element 300c can be electrically connected to the output pin PP2 of the driving element 300 arranged on the right side of the third driving element 300c, or can be electrically connected to a dimming driver.

[0319] According to various embodiments, the output pin PP2 of the first driving element 300a can be electrically connected to the input pin PP1 of the driving element 300 arranged on the left side of the first driving element 300a, and when the first driving element 300a is the driving element 300 arranged on the leftmost side, it can also be connected to the ground.

[0320] According to various embodiments, when the first driving element 300a is the driving element 300 arranged on the leftmost side, the first driving element 300a may not include the output pin PP2 either.

[0321] According to the present disclosure, between the driving elements 300 arranged in different columns from each other, power supply signals can be transmitted using the least number of power supply lines P.

[0322] Figure 15 The connection relationship between the first driving element 300a and the second driving element 300b arranged in the same column and adjacent to each other, and the third driving element 300c and the fourth driving element 300d arranged in a column different from the first driving element 300a and the second driving element 300b and adjacent to each other is shown.

[0323] Refer to Figure 15 , the first driving element 300a and the second driving element 300b can be arranged in the same column as each other. The third driving element 300c and the fourth driving element 300d can be arranged in the same column as each other.

[0324] The first driving element 300a and the second driving element 300b, and the third driving element 300c and the fourth driving element 300d can be arranged in adjacent columns to each other.

[0325] The first driving element 300a and the third driving element 300c may be the driving elements 300 that are closest to each other among the driving elements 300 arranged in different columns from each other.

[0326] The second driving element 300b and the fourth driving element 300d may be the driving elements 300 that are closest to each other among the driving elements 300 arranged in different columns from each other.

[0327] Referring to Figure 15 , as referring to Figure 12 As described, each of the first driving element 300a, the second driving element 300b, the third driving element 300c, and the fourth driving element 300d may include a plurality of pins DP1, DP2, TP1, TP2, PP1, PP2, and CP.

[0328] The output pin DP2 of the first driving element 300a may be electrically connected to the input pin DP1 of the second driving element 300b through the data line D.

[0329] The output pin DP2 of the third driving element 300c may be electrically connected to the input pin DP1 of the fourth driving element 300d through the data line D.

[0330] According to various embodiments, the data line D connected to the first driving element 300a and electrically connected to the second driving element 300b may transmit data signals that are different from each other from the data line D connected to the third driving element 300c and the fourth driving element 300d.

[0331] For example, the data line D connected to the first driving element 300a and the second driving element 300b may transmit data signals corresponding to the dimming block 200 arranged in the column adjacent to the first driving element 300a and the second driving element 300b. The data line D connected to the third driving element 300c and the fourth driving element 300d may transmit data signals corresponding to the dimming block 200 arranged in the column adjacent to the third driving element 300c and the fourth driving element 300d.

[0332] In one embodiment, the dimming block 200 corresponding to two columns may be arranged between the first driving element 300a and the third driving element 300c.

[0333] The output pin TP2 of the first driving element 300a may be electrically connected to the input pin TP1 of the third driving element 300c through the timing line T.

[0334] The output pin TP2 of the second driving element 300b may be electrically connected to the input pin TP1 of the fourth driving element 300d through the timing line T.

[0335] The output pin PP2 of the third driving element 300c can be electrically connected to the input pin PP1 of the first driving element 300a through the power line P.

[0336] The output pin PP2 of the fourth driving element 300d can be electrically connected to the input pin PP1 of the second driving element 300b through the power line P.

[0337] In the present disclosure, it is assumed that the timing line T is formed from the left side of the substrate 112, and the power line P is formed from the right side of the substrate 112, but the embodiments are not limited thereto.

[0338] According to various embodiments, the timing line T can be formed from the right side of the substrate 112, and the power line P can be formed from the left side of the substrate 112.

[0339] According to various embodiments, the output pin TP2 of the third driving element 300c can be electrically connected to the input pin TP1 of the first driving element 300a through the timing line T.

[0340] According to various embodiments, the output pin TP2 of the fourth driving element 300d can be electrically connected to the input pin TP1 of the second driving element 300b through the timing line T.

[0341] According to various embodiments, the output pin PP2 of the first driving element 300a can be electrically connected to the input pin PP1 of the third driving element 300c through the power line P.

[0342] According to various embodiments, the output pin PP2 of the second driving element 300b can be electrically connected to the input pin PP1 of the fourth driving element 300d through the power line P.

[0343] According to the present disclosure, the data line D can be disposed between the driving elements 300 adjacent in the column direction, and the timing line T and / or the power line P can be disposed between the driving elements 300 adjacent in the row direction.

[0344] Therefore, according to the present disclosure, the data line D, the timing line T, and the power line P can be formed in the substrate 112 without crossing each other.

[0345] In one embodiment, the plurality of control pins CP provided on the driving element 300 surround the pins TP1, TP2 connected to the timing line T and the pins PP1, PP2 connected to the power line P. Thus, a plurality of control lines C can be disposed on the outer contours of the timing line T and the power line P.

[0346] According to the present disclosure, the control line C can be connected to the plurality of dimming blocks in a manner with freedom without crossing the timing line T and the power line P.

[0347] In addition, according to the present disclosure, the control line C can be connected to a plurality of dimming blocks 200 located on the upper and lower sides of the driving element 300 without crossing the timing line T and the power line P.

[0348] According to the present disclosure, since the timing line T, the power line P, the data line D, and the control line C do not cross each other, the number of layers of the substrate 112 and / or the number of electrical components (e.g., jumper connectors) can be minimized.

[0349] According to various embodiments, the substrate 112 may be a printed circuit board composed of at least one layer including a first layer. For example, the substrate 112 may be a single-sided PCB composed of a first layer, or a multi-layer PCB composed of a first layer and at least one second layer.

[0350] In one embodiment, the timing line T, the power line P, the data line D, and the control line C may be formed on the first layer.

[0351] Figure 16 An example of the connection relationship between driving elements according to one embodiment is schematically shown on the substrate.

[0352] Refer to Figure 16 , a substrate according to one embodiment may include a plurality of dimming blocks 200 arranged in a matrix form and a plurality of driving elements 300 (300a, 300b, 300c, 300d, 300e, 300f) arranged between the plurality of dimming blocks 200.

[0353] According to various embodiments, the plurality of driving elements 300 may be arranged between two rows and between two columns with respect to the matrix formed by the plurality of dimming blocks 200, but the arrangement of the plurality of driving elements 300 is not limited thereto.

[0354] In Figure 16 , it is shown that the timing line T is formed from the left side of the substrate, and the power line P is formed from the right side of the substrate, but the embodiment is not limited to the above.

[0355] The substrate 112 may include a first driving element 300a, a second driving element 300b arranged below the first driving element 300a, a third driving element 300c arranged beside the first driving element 300a, a fourth driving element 300d arranged below the third driving element 300c, a fifth driving element 300 arranged beside the third driving element 300c, and a sixth driving element 300 arranged below the fifth driving element 300.

[0356] The data line D corresponding to the plurality of dimming blocks 200 arranged in the first column (the leftmost column) and the second column adjacent to the first column may be connected to the first driving element 300a.

[0357] Although only one data line D is shown in the drawings, the number of data lines D may be plural.

[0358] In one embodiment, the timing line T may be formed from the left side portion of the substrate 112.

[0359] The timing line T connected to the left side edges of the first driving element 300a and the second driving element 300b may extend to the right side edges of the first driving element 300a and the second driving element 300b and be connected to the left side edges of the third driving element 300c and the fourth driving element 300d.

[0360] The timing line T connected to the left side edges of the third driving element 300c and the fourth driving element 300d may extend to the right side edges of the third driving element 300c and the fourth driving element 300d and be connected to the left side edges of the fifth driving element 300e and the sixth driving element 300f.

[0361] According to the present disclosure, the timing line T extends in the row direction between the first driving element 300a and the second driving element 300b, the third driving element 300c and the fourth driving element 300d, and the fifth driving element 300e and the sixth driving element 300f, so that it can be non-crossed with other signal lines on the substrate 112.

[0362] In one embodiment, the power line P may be formed from the right side portion of the substrate 112.

[0363] The power line P connected to the right side edges of the fifth driving element 300e and the sixth driving element 300f may extend to the left side edges of the fifth driving element 300e and the sixth driving element 300f and be connected to the right side edges of the third driving element 300c and the fourth driving element 300d.

[0364] The power line P connected to the right side edges of the third driving element 300c and the fourth driving element 300d may extend to the left side edges of the third driving element 300c and the fourth driving element 300d and be connected to the right side edges of the first driving element 300a and the second driving element 300b.

[0365] According to the present disclosure, the power line P extends in the row direction between the first driving element 300a and the second driving element 300b, the third driving element 300c and the fourth driving element 300d, and the fifth driving element 300e and the sixth driving element 300f, so that it can be non-crossed with other signal lines on the substrate 112.

[0366] The data line D connected to the upper side edge of the first driving element 300a may extend to the lower side edge of the first driving element 300a and be connected to the upper side edge of the second driving element 300b.

[0367] The data line D connected to the upper side of the third driving element 300c may extend to the lower side of the third driving element 300c and be connected to the upper side of the fourth driving element 300d.

[0368] The data line D connected to the upper side of the fifth driving element 300 may extend to the lower side of the fifth driving element 300 and be connected to the upper side of the sixth driving element 300.

[0369] According to the present disclosure, the data line D extends in the column direction between the first driving element 300a, the third driving element 300c, the fifth driving element 300e, and the second driving element 300b, the fourth driving element 300d, and the sixth driving element 300f, so that it can be non-crossing with other signal lines on the substrate 112.

[0370] According to various embodiments, the control line C may be formed on the upper side of the timing line T or on the lower side of the power line P.

[0371] As an example, the control line C extending from the first driving element 300a may be formed on the upper side of the timing line T or on the lower side of the power line P.

[0372] As another example, the control line C extending from the second driving element 300b may be formed on the upper side of the timing line T or on the lower side of the power line P.

[0373] According to various embodiments, no control line C may be formed between the timing line T and the power line P.

[0374] According to the present disclosure, the control line C may be connected to each dimming block 200 without crossing the timing line T and / or the power line P.

[0375] According to the present disclosure, the control line C, the timing line T, the power line P, and the data line D may be formed on one layer of the substrate 112.

[0376] Figure 17 An example of the connection relationship between driving elements and the structure of driving lines according to an embodiment is schematically shown on the substrate.

[0377] Refer to Figure 17 , the substrate 112 may include a driving line 400 for supplying a driving voltage V to each of the plurality of dimming blocks 200 LED .

[0378] The driving line 400 may be connected to each of the plurality of dimming blocks 200.

[0379] According to various embodiments, in the case where the substrate 112 is a multi-layer printed circuit board, the driving line 400 may be formed on a layer different from the data line D and the power line P.

[0380] According to various embodiments, even when the substrate 112 is a multilayer printed circuit board or a single-sided printed circuit board having one layer, the driving line 400 may be formed on the same layer as the data line D, the timing line T, and the power line P.

[0381] Since the driving line 400 is formed in the row direction on the substrate 112 and the data line D is formed in the column direction on the substrate 112, the driving line 400 and the data line D may cross each other.

[0382] According to various embodiments, when the power line P includes a pattern in the column direction, the driving line 400 and the data line D may cross each other.

[0383] Thus, an electronic component such as a jumper connector is required to form the driving line 400 on the same layer as the data line D and / or the power line P.

[0384] In one embodiment, the driving line 400 may extend in the row direction to supply power to a plurality of dimming blocks. In one embodiment, the driving line 400 may extend in the column direction to supply power to a plurality of dimming blocks.

[0385] In one embodiment, the driving line 400 may be formed in a row different from the row in which the timing line T and the power line P are formed to prevent crossing with the timing line T and the power line P.

[0386] According to various embodiments, the substrate 112 may include at least one jumper connector JP1 that guides the driving line 400 and the power line P, which cross each other in one layer, to be electrically separated from each other.

[0387] The jumper connector JP1 may guide a circuit path such that the driving line 400 and the power line P are separated from each other.

[0388] As an example, the jumper connector JP1 may be disposed on a surface of the conductive layer 252 and guide the driving line 400 and the power line P to be electrically separated.

[0389] According to various embodiments, the substrate 112 may include at least one jumper connector JP2 that guides the driving line 400 and the data line D, which cross each other in one layer, to be electrically separated from each other.

[0390] The jumper connector JP2 may guide a circuit path such that the driving line 400 and the data line D are separated from each other.

[0391] As an example, the jumper connector JP1 may be disposed on a surface of the conductive layer 252 and guide the driving line 400 and the data line D to be electrically separated.

[0392] According to the present disclosure, by forming the timing line T, the data line D, the power line P, and the control line C not to cross each other in one layer, the use of jumper connectors can be minimized.

[0393] According to the present disclosure, the complexity of the conductive pattern of the substrate 112 can be alleviated by using the internal wirings ID, IT, and IP provided in the driving element 300.

[0394] A display device according to an embodiment of the present disclosure may include a liquid crystal panel and a light source device. The light source device may include: a substrate including a first side facing the liquid crystal panel; at least one dimming block provided on the first side of the substrate, each of the at least one dimming block including at least one light source; at least one driving element provided on the first side of the substrate, the at least one driving element driving the at least one dimming block respectively; and at least one signal line formed on the substrate.

[0395] The at least one signal line may include at least one of a timing line for transmitting a timing signal to the at least one driving element, a data line for transmitting a data signal to the at least one driving element, and a power line for transmitting a power signal to the at least one driving element.

[0396] The at least one driving element may include: at least one input pin, each of the at least one input pin being electrically connected to each of the at least one signal line; and at least one output pin, each of the at least one output pin being electrically connected to each of the at least one input pin.

[0397] The at least one driving element may include: a plurality of internal wirings electrically connecting the plurality of input pins and the plurality of output pins inside the region defined by the at least one driving element.

[0398] The at least one driving element may include a first driving element and a second driving element provided at a first end of the first driving element. The first driving element may include a first input pin to which the data line is electrically connected and a first output pin electrically connected to the first input pin. The second driving element may include a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

[0399] The first input pin may be provided at a second end of the first driving element opposite to the first end, the first output pin may be provided at the first end of the first driving element, the second input pin may be provided at a second end of the second driving element, and the second output pin may be provided at a first end of the second driving element opposite to the second end.

[0400] The at least one driving element may include a first driving element and a second driving element disposed laterally of the first driving element. The first driving element may include a first input pin for electrically connecting the timing line and a first output pin electrically connected to the first input pin. The second driving element may include a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

[0401] The first input pin may be disposed on a first side portion of the first driving element. The first output pin may be disposed on a second side portion of the first driving element opposite to the first input pin. The second input pin may be disposed on a first side portion of the second driving element. The second output pin may be disposed on a second side portion of the second driving element opposite to the second input pin.

[0402] The at least one driving element may include a first driving element and a second driving element disposed laterally of the first driving element. The first driving element may include a first input pin for electrically connecting the power line and a first output pin electrically connected to the first input pin. The second driving element may include a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

[0403] The first input pin may be disposed on a first side portion of the first driving element. The first output pin may be disposed on a second side portion of the first driving element opposite to the first input pin. The second input pin may be disposed on a first side portion of the second driving element. The second output pin may be disposed on a second side portion of the second driving element opposite to the second input pin.

[0404] The at least one driving element may further include: a plurality of control pins electrically connected to the at least one dimming block. Among them, the first input pin connected to the timing line and the second input pin connected to the power line may be disposed between the plurality of control pins.

[0405] The display device may further include: a panel driver for driving the liquid crystal panel; and a dimming driver for driving the light source device. Among them, the dimming driver may be electrically connected to the timing line and the data line.

[0406] The substrate may include a printed circuit board composed of at least one layer including a first layer. Among them, the timing line, the data line, and the power line may be formed on the first layer and may not cross each other.

[0407] The display device may further include: driving lines formed on the first layer and supplying a driving voltage to each of the at least one dimming block; and at least one jumper connector guiding a circuit path such that the driving lines are separated from the power supply line and the data line, wherein the driving lines may not cross the timing lines.

[0408] The display device may further include: control lines formed on the first layer and electrically connecting the at least one dimming block and the at least one driving element, wherein the control lines may not cross the timing lines, the data lines, and the power supply line.

[0409] The display device may further include: control lines formed on the substrate and electrically connecting the at least one dimming block and the at least one driving element; driving lines formed on the substrate and supplying power to each of the at least one dimming block; and at least one jumper connector guiding a circuit path such that the driving lines are separated from the data lines, wherein the substrate includes a printed circuit board composed of at least one layer including a first layer, the timing lines, the data lines, the power supply lines, the control lines, and the driving lines may be formed on the first layer, the timing lines, the data lines, the power supply lines, and the control lines may not cross each other, and the driving lines and the data lines may cross each other.

[0410] A light source device according to an embodiment of the present disclosure may include: a substrate; at least one dimming block disposed on a first side of the substrate, each of the at least one dimming block including at least one light source; at least one driving element disposed on the first side of the substrate, the at least one driving element driving the at least one dimming block respectively; and at least one signal line formed on the substrate.

[0411] The at least one signal line may include at least one of a timing line transmitting a timing signal to the at least one driving element, a data line transmitting a data signal to the at least one driving element, and a power supply line transmitting a power supply signal to the at least one driving element.

[0412] The at least one driving element may include: at least one input pin, each of the at least one input pin being electrically connected to each of the at least one signal line; and at least one output pin, each of the at least one output pin being electrically connected to each of the at least one input pin.

[0413] The at least one driving element may include: a plurality of internal wirings electrically connecting the at least one input pin and the at least one output pin inside a region defined by the at least one driving element.

[0414] The at least one driving element may include a first driving element and a second driving element disposed at a first end of the first driving element. The first driving element may include a first input pin for electrically connecting the data line and a first output pin electrically connected to the first input pin. The second driving element may include a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

[0415] The at least one driving element may include a first driving element and a second driving element disposed laterally of the first driving element. The first driving element may include a first input pin for electrically connecting the timing line and a first output pin electrically connected to the first input pin. The second driving element may include a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

[0416] The at least one driving element may include a first driving element and a second driving element disposed laterally of the first driving element. The first driving element may include a first input pin for electrically connecting the power line and a first output pin electrically connected to the first input pin. The second driving element may include a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

[0417] The substrate may include a printed circuit board composed of at least one layer including a first layer. Among them, the timing line, the data line, and the power line may be formed on the first layer and may not cross each other.

[0418] In addition, the disclosed embodiments may be implemented in the form of a recording medium storing computer-executable instructions. The instructions may be stored in the form of program code and, when executed by a processor, may generate a program module to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0419] Computer-readable recording media include all types of recording media storing computer-readable instructions. For example, there may be a read-only memory (ROM: read only memory), a random access memory (RAM: random access memory), magnetic tape, magnetic disk, flash memory, an optical data storage device, and the like.

[0420] In addition, the computer-readable recording medium may be provided in the form of a non-transitory storage medium. Herein, a "non-transitory storage medium" is a tangible device, which only means that it does not include signals (e.g., electromagnetic waves), and this term does not distinguish between the case where data is semi-permanently stored in the storage medium and the case where data is temporarily stored in the storage medium. For example, a "non-transitory storage medium" may include a buffer for temporarily storing data.

[0421] According to an embodiment, the methods according to various embodiments disclosed in this specification may be provided by being included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be released in the form of a machine-readable recording medium (e.g., a compact disc read only memory (CD-ROM)), or may be directly or online released (e.g., downloaded or uploaded) between two user devices (e.g., smartphones) through an application store (e.g., Playstore TM ). In the case of online release, at least a part of the computer program product (e.g., a downloadable app) may be temporarily stored in a device-readable recording medium (such as the memory of a manufacturer's server, an application store's server, or a relay server), or may be temporarily generated.

[0422] As described above, the disclosed embodiments have been described with reference to the accompanying drawings. Those of ordinary skill in the art to which the present invention pertains should understand that the present invention can be implemented in a form different from the disclosed embodiments without changing the technical concept or essential features of the present invention. The disclosed embodiments are exemplary and should not be construed as restrictive.

Claims

1. A display device, wherein, the display device includes a liquid crystal panel and a light source device, wherein, the light source device includes: a substrate including a first side facing the liquid crystal panel; at least one dimming block disposed on the first side of the substrate, each of the at least one dimming block including at least one light source; at least one driving element disposed on the first side of the substrate, the at least one driving element respectively driving the at least one dimming block; and at least one signal line formed on the substrate, the at least one signal line including at least one of a timing line for transmitting a timing signal to the at least one driving element, a data line for transmitting a data signal to the at least one driving element, and a power line for transmitting a power signal to the at least one driving element, the at least one driving element includes: at least one input pin, each of the at least one input pin being electrically connected to each of the at least one signal line; and at least one output pin, each of the at least one output pin being electrically connected to each of the at least one input pin.

2. The display device according to claim 1, wherein, the at least one driving element includes: at least one internal wiring for electrically connecting the at least one input pin and the at least one output pin inside a region defined by the at least one driving element.

3. The display device according to claim 1, wherein, the at least one driving element includes a first driving element and a second driving element disposed at a first end of the first driving element, the first driving element includes a first input pin for electrically connecting the data line and a first output pin electrically connected to the first input pin, the second driving element includes a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

4. The display device according to claim 3, wherein, the first input pin is disposed at a second end of the first driving element opposite to the first end, the first output pin is disposed at the first end of the first driving element, the second input pin is disposed at a second end of the second driving element, and the second output pin is disposed at a first end of the second driving element opposite to the second end.

5. The display device according to claim 1, wherein, the at least one driving element includes a first driving element and a second driving element disposed beside the first driving element, the first driving element includes a first input pin for electrically connecting the timing line and a first output pin electrically connected to the first input pin, the second driving element includes a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

6. The display device according to claim 5, wherein, The first input pin is disposed on a first side portion of the first driving element, the first output pin is disposed on a second side portion of the first driving element opposite to the first input pin, the second input pin is disposed on a first side portion of the second driving element, and the second output pin is disposed on a second side portion of the second driving element opposite to the second input pin.

7. The display device according to claim 1, wherein, the at least one driving element includes a first driving element and a second driving element disposed laterally of the first driving element, the first driving element includes a first input pin electrically connected to the power supply line and a first output pin electrically connected to the first input pin, the second driving element includes a second input pin electrically connected to the first output pin and a second output pin electrically connected to the second input pin.

8. The display device according to claim 7, wherein, the first input pin is disposed on a first side portion of the first driving element, the first output pin is disposed on a second side portion of the first driving element opposite to the first input pin, the second input pin is disposed on a first side portion of the second driving element, and the second output pin is disposed on a second side portion of the second driving element opposite to the second input pin.

9. The display device according to claim 1, wherein, the at least one driving element further includes: a plurality of control pins electrically connected to the at least one dimming block, wherein, the first input pin connected to the timing line and the second input pin connected to the power supply line are disposed between the plurality of control pins.

10. The display device according to claim 1, further includes: a panel driver for driving the liquid crystal panel; and a dimming driver for driving the light source device, wherein, the dimming driver is electrically connected to the timing line and the data line.

11. The display device according to claim 1, wherein, the substrate includes a printed circuit board composed of at least one layer including a first layer, wherein, the timing line, the data line, and the power supply line are formed on the first layer and do not cross each other.

12. The display device according to claim 11, further includes: a driving line formed on the first layer and supplying a driving voltage to each of the at least one dimming block; and at least one jumper connector for guiding a circuit path such that the driving line is separated from the power supply line and the data line, wherein, the driving line does not cross the timing line.

13. The display device according to claim 11, further includes: a control line formed on the first layer and electrically connecting the at least one dimming block and the at least one driving element, wherein, the control line does not cross the timing line, the data line, and the power supply line.

14. The display device according to claim 1, further includes: a control line formed on the substrate and electrically connecting the at least one dimming block and the at least one driving element; A driving line, formed on the substrate and supplying power to each of the at least one dimming block; and at least one jumper connector, guiding a circuit path such that the driving line is separated from the data line, wherein the substrate includes a printed circuit board composed of at least one layer including a first layer, the timing line, the data line, the power line, the control line, and the driving line are formed on the first layer, the timing line, the data line, the power line, and the control line do not cross each other, and the driving line and the data line cross each other.

15. A light source device, comprising: a substrate; at least one dimming block, disposed on a first side of the substrate, each of the at least one dimming block including at least one light source; at least one driving element, disposed on the first side of the substrate, the at least one driving element respectively driving the at least one dimming block; and at least one signal line, formed on the substrate, wherein the at least one signal line includes at least one of a timing line for transmitting a timing signal to the at least one driving element, a data line for transmitting a data signal to the at least one driving element, and a power line for transmitting a power signal to the at least one driving element, the at least one driving element includes: at least one input pin, each of the at least one input pin being electrically connected to each of the at least one signal line; and at least one output pin, each of the at least one output pin being electrically connected to each of the at least one input pin.

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