KR20150111545A - Display device - Google Patents

Display device Download PDF

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Publication number
KR20150111545A
KR20150111545A KR1020140034874A KR20140034874A KR20150111545A KR 20150111545 A KR20150111545 A KR 20150111545A KR 1020140034874 A KR1020140034874 A KR 1020140034874A KR 20140034874 A KR20140034874 A KR 20140034874A KR 20150111545 A KR20150111545 A KR 20150111545A
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KR
South Korea
Prior art keywords
tape carrier
display panel
interval
circuit board
printed circuit
Prior art date
Application number
KR1020140034874A
Other languages
Korean (ko)
Inventor
박성동
송영대
이상환
차기석
권혁태
김희진
배유한
오명수
Original Assignee
삼성디스플레이 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 삼성디스플레이 주식회사 filed Critical 삼성디스플레이 주식회사
Priority to KR1020140034874A priority Critical patent/KR20150111545A/en
Publication of KR20150111545A publication Critical patent/KR20150111545A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/05—Flexible printed circuits [FPCs]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10621—Components characterised by their electrical contacts
    • H05K2201/10681—Tape Carrier Package [TCP]; Flexible sheet connector

Abstract

The display device includes a display panel, a printed circuit board, and a tape carrier package. The display panel displays an image. The printed circuit board is electrically connected to the display panel and has a first curvature. The tape carrier package electrically connects the printed circuit board and the display panel. The plurality of tape carrier packages may be spaced from each other in the area overlapping the display panel and the spaces between the tape carrier packages in the area overlapping the display panel may be smaller than the spaces between the tape carrier packages in the area overlapping the printed circuit board, have.

Description

Display device {DISPLAY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a display device, and more particularly, to a display device capable of reducing the occurrence of defects.

The display device includes a display panel, a printed circuit board for driving the display panel, and a tape carrier package (TCP) for electrically connecting the display panel and the printed circuit board.

Generally, the spacing between the tape carrier packages on the display panel is equal to the spacing between the tape carrier packages in the area overlapping the printed circuit board, and after attaching the tape carrier package to the printed circuit board, Thereby forming a curvature on the substrate. If the display panel or the printed circuit board has curvature, the tape carrier packages are subjected to different stresses, tensiles, and the like depending on the attached position with the display panel or the attached position with the printed circuit board.

At this time, if the printed circuit board does not have sufficient elasticity so as to have resistance to such stress, tension, etc., it is possible to form curvature on the printed circuit board using a jig, a tray, or the like, When the printed circuit board is attached to the lower surface of the display panel where the image is not displayed, the tape carrier packages in the area overlapping the printed circuit board are subjected to both ends of the printed circuit board, The spacing between the tape carrier packages of the first and second tape carrier packages can be widened. As a result, a defect occurs in the display device.

An object of the present invention is to provide a display device capable of reducing the occurrence of defects.

A display device according to an embodiment of the present invention includes a display panel, a printed circuit board, and a tape carrier package. The display panel displays an image. The printed circuit board is electrically connected to the display panel and has a first curvature. The tape carrier package (TCP) electrically connects the printed circuit board and the display panel. The plurality of tape carrier packages may be spaced from each other in the area overlapping the display panel and the spaces between the tape carrier packages in the area overlapping the display panel may be smaller than the spaces between the tape carrier packages in the area overlapping the printed circuit board, have.

Wherein the plurality of tape carrier packages comprise first to third tape carrier packages spaced apart from each other, wherein the spacing between the first to third tape carrier packages in the overlapping area of the display panel May be less than the spacing between the first to third tape carrier packages in the overlapping region.

A first straight line perpendicular to the thickness direction of the display panel and the first tape carrier package form a first angle and a second straight line perpendicular to the thickness direction of the display panel and the second tape carrier package has a second angle A third straight line perpendicular to the thickness direction of the display panel and the third tape carrier package form a third angle. The first angle may be larger than the second angle and the third angle.

One end of the first to third tape carrier packages may be located on the same line in an area overlapping the display panel when viewed in the thickness direction of the display panel.

One end of the first to third tape carrier packages in a region overlapping with the printed circuit board when viewed in the thickness direction of the display panel may be located on the same line.

Wherein the shortest distance among the intervals of the first tape carrier package and the second tape carrier package in the area overlapping the display panel is a first display interval and the shortest distance between the first tape carrier package and the second tape carrier package in the area overlapping the display panel, The shortest distance among the intervals of the three tape carrier packages may be a second display interval, and the first display interval and the second display interval may be equal to each other.

Wherein the shortest distance among the intervals of the first tape carrier package and the second tape carrier package in the area overlapping the printed circuit board is a first printing interval and the second tape carrier package and the second tape carrier package in an area overlapping the printed circuit board, The shortest distance among the intervals of the third tape carrier package may be a second printing interval, and the first printing interval and the second printing interval may be different from each other.

The first display interval and the second display interval may be smaller than the first printing interval.

The first display interval and the second display interval may be smaller than the second print interval.

Wherein the tape carrier package further comprises a fourth tape carrier package spaced apart from the first through third tape carrier packages, wherein a gap between the third and fourth tape carrier packages in an area overlapping the display panel May be smaller than the spacing between the third and fourth tape carrier packages in an area overlapping the printed circuit board, respectively.

The shortest distance among the intervals of the third tape carrier package and the fourth tape carrier package in the area overlapping the display panel is a third display interval, and the first through third display intervals may be the same.

The shortest distance among the intervals of the third tape carrier package and the fourth tape carrier package in the area overlapping the printed circuit board may be a third printing space and the third display space may be smaller than the third printing space .

The second printing interval and the third printing interval may be different from each other.

The second printing interval may be longer than the first printing interval and the third printing interval.

The first printing interval and the third printing interval may be the same.

The display panel may have a second curvature.

The larger the first curvature, the larger the gap between the tape carrier packages in the area overlapping the display panel and the gap between the tape carrier packages in the area overlapping the printed circuit board.

The greater the modulus of elasticity of the plurality of tape carrier packages, the greater the difference between the spacings between the tape carrier packages in the area overlapping the display panel and the spacing between the tape carrier packages in the area overlapping the printed circuit board It can be big.

The display panel may have a radius of curvature of 3000 to 5000 mm.

The first curvature may be different from the second curvature.

According to the display device of the embodiment of the present invention, occurrence of defects can be reduced.

1 is a schematic perspective view of a display device according to an embodiment of the present invention.
2 is a schematic plan view of a display device according to an embodiment of the present invention.
Fig. 3 is an enlarged plan view of part of Fig. 2. Fig.
4 is a schematic perspective view of a display device according to an embodiment of the present invention.
5 is a schematic perspective view of a display device according to an embodiment of the present invention.
6 is a schematic plan view of a display device according to an embodiment of the present invention.
Fig. 7 is an enlarged plan view showing a part of Fig. 6. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are shown enlarged from the actual for the sake of clarity of the present invention. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, where a section such as a layer, a film, an area, a plate, or the like is referred to as being "on" another section, it includes not only the case where it is "directly on" another part but also the case where there is another part in between. On the contrary, where a section such as a layer, a film, an area, a plate, etc. is referred to as being "under" another section, this includes not only the case where the section is "directly underneath"

Hereinafter, a display device according to an embodiment of the present invention will be described.

1 is a schematic perspective view of a display device according to an embodiment of the present invention.

2 is a schematic plan view of a display device according to an embodiment of the present invention.

Fig. 3 is an enlarged plan view of part of Fig. 2. Fig.

1 to 3, a display device 10 according to an embodiment of the present invention includes a display panel 100, a printed circuit board 300 having a first curvature, and a tape carrier package (TCP) ) ≪ / RTI >

The display panel 100 may include an organic light emitting display panel, a liquid crystal display panel, a plasma display panel, an electrophoretic display panel, And an electrowetting display panel. In the following description, the display panel 100 is a liquid crystal display panel.

The display panel 100 displays an image. The display panel 100 may include a display area (not shown) for displaying an image and a non-display area (not shown) for not displaying an image.

The display panel 100 includes a first substrate 110, a second substrate 120 facing the first substrate 110, and a second substrate 120 formed between the first substrate 110 and the second substrate 120 And a liquid crystal layer (not shown).

Although not shown, the first substrate 110 includes a plurality of pixels. Although not shown, each pixel of the first substrate 110 includes at least one thin film transistor, a pixel electrode, and a common electrode for driving liquid crystal molecules.

The first substrate 110 includes a first base substrate (not shown), a thin film transistor (not shown), a pixel electrode (not shown), and a common electrode (not shown).

The first base substrate may be, but not limited to, a plastic substrate, a glass substrate, a quartz substrate, or the like. The first base substrate may be a transparent insulating substrate.

A gate line and a data line may be formed on the first base substrate. The gate line is formed on the first base substrate in a first direction. The data line extends in a second direction crossing the first direction with the gate line and the gate insulating film interposed therebetween.

The thin film transistor includes a gate electrode, a semiconductor pattern, a source electrode, and a drain electrode.

The gate electrode protrudes from the gate line or is provided on a part of the gate line. The gate electrode may be formed of a metal. The gate electrode may be made of nickel, chromium, molybdenum, aluminum, titanium, copper, tungsten, or an alloy containing them.

A gate insulating film is formed on the gate electrode. The gate insulating layer is provided on the front surface of the first base substrate and covers the gate line electrode layer and the gate electrode.

The semiconductor pattern is provided on the gate insulating film. The semiconductor pattern is provided on the gate electrode with a gate insulating film interposed therebetween, and a part of the semiconductor pattern is overlapped with the gate electrode.

The source electrode is branched and provided in the data line electrode layer. A portion of the source electrode overlaps the gate electrode.

And the drain electrode is provided apart from the source electrode with the semiconductor pattern interposed therebetween. The drain electrode is provided such that a part of the drain electrode overlaps the gate electrode.

The source electrode and the drain electrode may be formed of nickel, chromium, molybdenum, aluminum, titanium, copper, tungsten, or an alloy thereof.

The pixel electrode is connected to the drain electrode. The pixel electrode is formed of a transparent conductive material. In particular, the pixel electrode is formed of a transparent conductive oxide (Transparent Conductive Oxide). The transparent conductive oxide includes ITO (indium tin oxide), IZO (indium zinc oxide), ITZO (indium tin zinc oxide), and the like. The pixel electrode can be formed in various ways, for example, by using a photolithography process.

The common electrode is formed on the pixel electrode and drives the liquid crystal layer by forming an electric field with the pixel electrode. The common electrode may be formed of a transparent conductive material. The common electrode may be formed of a conductive metal oxide such as ITO (indium tin oxide), IZO (indium zinc oxide), ITZO (indium tin zinc oxide), or the like. The common electrode may be formed in various ways, for example, by using a photolithography process.

Although not shown, the second substrate 120 includes a second base substrate, a black matrix, and a color filter. The black matrix and the color filter may be included in the first substrate 110.

The second base substrate may be, but not limited to, a plastic substrate, a glass substrate, a quartz substrate, or the like. The second base substrate may be a transparent insulating substrate.

The black matrix is formed corresponding to the light shielding region of the first substrate 110. The light shielding region may be defined as an area where the data line, the thin film transistor, and the gate line are formed. Since the pixel electrode is not normally formed in the light shielding region, the liquid crystal molecules may not be aligned and light leakage may occur. Accordingly, the black matrix is formed in the light shielding region to block the light leakage. The black matrix may be formed before, after or simultaneously with the step of forming the color filter. The black matrix may be formed by forming a light-shielding layer that absorbs light and patterning the light-shielding layer by using photolithography, or may be formed by another method, for example, an inkjet method.

The color filter is formed on the second base substrate and provides color to light transmitted through the liquid crystal layer. The color filter may be formed by forming a color layer showing red, green, blue, or other color on the second base substrate, and patterning the color layer using photolithography. The method of forming the color filter is not limited to this, and it is needless to say that it can be formed by an ink jet method or the like.

A planarization layer may be formed on the black matrix and the color filter. The planarization layer may planarize the second substrate 120.

The liquid crystal layer includes a plurality of liquid crystal molecules having dielectric anisotropy. The liquid crystal molecules of the liquid crystal layer rotate in a specific direction between the first substrate 110 and the second substrate 120 when an electric field is applied between the pixel electrodes of the first substrate 110 and the common electrode, Thereby controlling the transmittance of light incident on the liquid crystal layer.

The display panel 100 may be flexible. In addition, the display panel 100 may be curved.

The display panel 100 may have a second curvature. The display panel 100 may be convex or concave in the thickness direction. At this time, one convex or concave portion may be provided, or a plurality of convex or concave portions may be provided.

The display panel 100 may have a constant curvature. For example, the display panel 100 may have a positive curvature at the second curvature. That is, the display panel 100 may be a part of a circle having the curvature of the second curvature.

The second curvature may be the same as the first curvature. For example, the display panel 100 and the printed circuit board 300 may have the same shape. Also, for example, the display panel 100 and the printed circuit board 300 may be part of the same circle and part of the same ellipse. And may have a single curvature or a plurality of curvatures, though not a part of a circle or an ellipse, and may have the same shape as each other.

The second curvature may be different from the first curvature. For example, the display panel 100 and the printed circuit board 300 may be part of circles that resemble each other. Also, for example, the display panel 100 and the printed circuit board 300 may be each a part of an ellipse that resembles each other. Also, for example, the display panel 100 and the printed circuit board 300 may have different curvatures.

The display panel 100 may have a radius of curvature of 3000 to 5000 mm. If the radius of curvature is less than 3000 mm, the radius of curvature is small and the user's visibility may be degraded. If the radius of curvature is more than 5000 mm, there may be no significant difference from the case where the display panel 100 is flat.

The printed circuit board 300 is electrically connected to the display panel 100. The printed circuit board (300) drives the display panel (100). The printed circuit board 300 may include a driving unit (not shown) for providing a driving signal to the display panel 100. Although the driving unit (not shown) is included in the printed circuit board 300 in the embodiment of the present invention, the driving unit (not shown) may be included in the tape carrier package 200.

The driving unit (not shown) generates a driving signal for driving the display panel 100 in response to an external signal. The external signal is a signal supplied from the printed circuit board 300, and the external signal may include a video signal, various control signals, and a driving voltage.

A gate driver and a data driver are required to display an image on the display panel 100. The driver may be a data driver that converts the image signal into the data signal and transmits the data signal to the display panel 100 Not shown). The data driver (not shown) may be formed of chips and mounted on the tape carrier package 200, and may be mounted on the first base substrate in the form of a chip on glass (COG) It is possible.

A gate driver (not shown) for generating the gate signal may be formed directly on the first base substrate. The gate driver (not shown) may be formed of a chip and mounted on the tape carrier package 200 or the driving unit (not shown).

The printed circuit board 300 may be rigid. For example, the printed circuit board 300 may be a plastic substrate, a glass substrate, a quartz substrate, or the like.

As noted above, the printed circuit board 300 may have a first curvature. The method of applying the curvature to the printed circuit board 300 is not particularly limited as long as it is commonly used. However, if a second curvature is formed on the printed circuit board 300 by using a jig, a tray, . The second curvature may be formed on the printed circuit board 300 and then the tape carrier package 200 and the printed circuit board 300 may be connected to each other. The tape carrier package 200 and the printed circuit board 300 may be connected to each other.

The printed circuit board 300 is not limited thereto, but may be convex or concave in the thickness direction. At this time, one convex or concave portion may be provided, or a plurality of convex or concave portions may be provided.

The tape carrier package 200 electrically connects the printed circuit board 300 and the display panel 100. The tape carrier package 200 may be formed as an elastic film.

The tape carrier package 200 may be plural. For example, the tape carrier package 200 may be two, three, four, or more.

The lengths of the plurality of tape carrier packages 200 may be the same or different from each other.

The intervals between the tape carrier packages 200 in the area overlapping the display panel 100 are smaller than the intervals between the tape carrier packages 200 in the area overlapping the printed circuit board 300, . The display device 10 according to an exemplary embodiment of the present invention may have a structure in which the intervals between the tape carrier packages 200 in an area overlapping the display panel 100 are different from each other in a region overlapping the printed circuit board 300 The spacing between the tape carrier packages 200 is smaller than that between the tape carrier packages 200. Even if the printed circuit board 300 is attached to the lower surface of the display panel 100 having curvature, This will be described later in more detail.

The plurality of tape carrier packages 200 may include first to third tape carrier packages 210, 220, and 230 that are spaced apart from each other. For example, the first to third tape carrier packages 210, 220, and 230 may be spaced apart from each other and sequentially connected to the display panel 100 and the printed circuit board 300.

One end of each of the first to third tape carrier packages 210, 220 and 230 is positioned on the same line in a region overlapping the display panel 100 when viewed from the thickness direction of the display panel 100 . If the first to third tape carrier packages 210, 220 and 230 electrically connect the display panel 100 and the printed circuit board 300, the display panel 100 One end of each of the first to third tape carrier packages 210, 220, and 230 may not be aligned.

One end of each of the first to third tape carrier packages 210, 220 and 230 is positioned on the same line in a region overlapping the printed circuit board 300 when viewed from the thickness direction of the display panel 100. [ can do. If the first to third tape carrier packages 210, 220 and 230 are to electrically connect the display panel 100 and the printed circuit board 300, One end of the first to third tape carrier packages 210, 220, and 230 on the tape carrier 300 may not be aligned.

The first to third tape carrier packages 210, 220 and 230 are connected to the display panel 100 and the printed circuit board 300 to be convex or concave in the thickness direction of the display panel 100 . At this time, there may be a plurality of convex or concave portions.

The spaces between the first to third tape carrier packages 210, 220, and 230 in the area overlapping the display panel 100 are spaced apart from each other in the area overlapping the printed circuit board 300, 3 tape carrier packages 210, 220, 230. In some embodiments,

A first straight line perpendicular to the thickness direction of the display panel 100 and the first tape carrier package 210 form a first angle and are perpendicular to a thickness direction of the display panel 100, 2 tape carrier package 220 forms a second angle and a third straight line perpendicular to the thickness direction of the display panel 100 and the third tape carrier package 230 form a third angle. The first straight line to the third straight line are parallel to each other. The first angle may be larger than the second angle and the third angle. The magnitudes of the second angle and the third angle may be equal to each other or different from each other.

The shortest distance among the intervals of the first tape carrier package 210 and the second tape carrier package 220 in the area overlapping the display panel 100 is referred to as a first display interval D1, 100, the shortest distance between the second tape carrier package 220 and the third tape carrier package 230 is the second display interval D2, the first display interval D1 And the second display interval D2 may be equal to each other. However, the present invention is not limited thereto, and the first display interval D1 and the second display interval D2 may be different from each other. For example, the first display interval D1 may be longer than the second display interval D2, and the first display interval D1 may be shorter than the second display interval D2.

The shortest distance among the intervals of the first tape carrier package 210 and the second tape carrier package 220 in a region overlapping the printed circuit board 300 is a first printing distance d1, The shortest distance among the intervals of the second tape carrier package 220 and the third tape carrier package 230 in a region overlapping the substrate 300 is a second printing distance d2, the first printing distance d1 and the second printing distance d2 may be different from each other. For example, the first printing interval d1 may be longer than the first printing interval d1, and the first printing interval d1 may be shorter than the second printing interval d2. However, the present invention is not limited thereto, and the first printing interval d1 and the second printing interval d2 may be the same.

The first display interval D1 and the second display interval D2 may be shorter than the first printing interval d1. Also, the first display interval D1 and the second display interval D2 may be smaller than the second printing interval d2.

4 is a schematic perspective view of a display device 10 according to an embodiment of the present invention.

Generally, the spacing between the tape carrier packages on the display panel is equal to the spacing between the tape carrier packages in the area overlapping the printed circuit board, and after attaching the tape carrier package to the printed circuit board, Thereby forming a curvature on the substrate. If the display panel or the printed circuit board has curvature, the tape carrier packages are subjected to different stresses, tensiles, and the like depending on the attached position with the display panel or the attached position with the printed circuit board.

At this time, if the printed circuit board does not have sufficient elasticity so as to have resistance to such stress, tension, etc., it is possible to form curvature on the printed circuit board using a jig, a tray, or the like, When the printed circuit board is attached to the lower surface of the display panel where the image is not displayed, the tape carrier packages in the area overlapping the printed circuit board are subjected to both ends of the printed circuit board, The spacing between the tape carrier packages of the first and second tape carrier packages can be widened. As a result, a defect occurs in the display device.

Referring to FIG. 4, a display device 10 according to an embodiment of the present invention includes a plurality of first to third tape carrier packages 210, 220, and 230 in a region overlapping the display panel 100, The intervals are respectively smaller than the intervals between the first to third tape carrier packages 210, 220 and 230 in the area overlapping the printed circuit board 300 so that the display panel 100 has curvature When the printed circuit board 300 connected to the tape carrier packages 200 is attached to the lower surface of the display panel 100 where no image is displayed, the tape carrier packages 300 in the area overlapping the printed circuit board 300 It is possible to prevent the defects of the display device 10 from occurring.

The greater the first curvature, the greater the stress and tension the tape carrier packages 200 receive, and thus the spacing between the tape carrier packages 200 in the area overlying the display panel 100 The gap between the tape carrier packages 200 in the area overlapping the printed circuit board 300 may be large.

The larger the radius of curvature of the display panel 100, the greater the stress and tension the tape carrier packages 200 receive, and thus the tape carrier packages 200 (in the area overlapping the display panel 100) 200 and the intervals between the tape carrier packages 200 in the area overlapping the printed circuit board 300 are large.

In addition, the greater the modulus of elasticity of the plurality of tape carrier packages 200, the greater the stress and tensile force received by the tape carrier packages 200, and thus, in the area overlapping the display panel 100, The difference between the intervals between the carrier packages 200 and the intervals between the tape carrier packages 200 in the area overlapping the printed circuit board 300 may be large.

5 is a schematic perspective view of a display device according to an embodiment of the present invention.

6 is a schematic plan view of a display device according to an embodiment of the present invention.

Fig. 7 is an enlarged plan view showing a part of Fig. 6. Fig.

5 through 7, the tape carrier package 200 may further include a fourth tape carrier package 240 spaced apart from the first through third tape carrier packages 210, 220, and 230, respectively. have. Hereinafter, differences from the display device 10 including the first to third tape carrier packages 210, 220, and 230 described above will be described in detail, and the unexplained portions will be described with reference to the first to third tapes Followed by the display device 10 including the carrier packages 210, 220 and 230.

The first to fourth tape carrier packages 210, 220, 230, and 240 may be spaced apart from each other and sequentially connected to the display panel 100 and the printed circuit board 300.

One end of each of the first to fourth tape carrier packages 210, 220, 230, and 240 is arranged on the same line in a region overlapping the display panel 100 when viewed from the thickness direction of the display panel 100 Can be located. If the first to fourth tape carrier packages 210, 220, 230, and 240 are to electrically connect the display panel 100 and the printed circuit board 300, One end of the first to third tape carrier packages 210, 220, and 230 may not be aligned in an area overlapping the panel 100. [

One end of each of the first to third tape carrier packages 210, 220 and 230 is positioned on the same line in a region overlapping the printed circuit board 300 when viewed from the thickness direction of the display panel 100. [ can do. If the first to third tape carrier packages 210, 220 and 230 are to electrically connect the display panel 100 and the printed circuit board 300, One end of the first to fourth tape carrier packages 210, 220, 230, and 240 on the tape carrier 300 may not be aligned.

The spaces between the third and fourth tape carrier packages 230 and 240 in the area overlapping the display panel 100 are respectively the same as the spaces between the third and fourth tapes 300 and 240 in the area overlapping the printed circuit board 300, May be smaller than the spacing between the carrier packages 230, 240.

A first straight line perpendicular to the thickness direction of the display panel 100 and the first tape carrier package 210 form a first angle and are perpendicular to a thickness direction of the display panel 100, 2 tape carrier package 220 forms a second angle and a third straight line perpendicular to the thickness direction of the display panel 100 and the third tape carrier package 230 form a third angle, 100 and the fourth tape carrier package 240 form a fourth angle. The first straight line to the fourth straight line are parallel to each other. The first angle may be larger than the second angle and the third angle. The fourth angle may be larger than the second angle and the third angle. The first angle and the fourth angle may have the same size or may be different from each other. The magnitudes of the second angle and the third angle may be equal to each other or different from each other.

The third display interval D3 is the shortest distance among the intervals between the third tape carrier package 230 and the fourth tape carrier package 240 in the area overlapping the display panel 100, And the third display interval D3 may be the same as each other. However, the present invention is not limited thereto, and the first to third display intervals D3 may be different from each other.

The third distance between the third tape carrier package 230 and the fourth tape carrier package 240 in the area overlapping the printed circuit board 300 is the third printing distance d3, 3 display interval D3 may be smaller than the third printing interval d3

The second printing distance d2 and the third printing distance d3 may be different from each other. However, the second printing interval d2 and the third printing interval d3 may be equal to each other.

The second printing distance d2 may be longer than the first printing distance d1 and the third printing distance d3, and the first printing distance d1 and the second printing distance d2 may be different from each other. 3 Printing interval d3 may be the same.

The display device according to an embodiment of the present invention is characterized in that the printed circuit board has a first curvature, and the spaces between the plurality of tape carrier packages in the area overlapping the display panel are respectively in a region overlapping the printed circuit board When the printed circuit board connected to the tape carrier packages is attached to the lower surface of the display panel where the image is not displayed even if the display panel has a curvature, The intervals between the tape carrier packages in the overlapping area can be maintained without fraying, thereby preventing defective display devices from being generated.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect.

10: Display device 100: Display panel
110: first substrate 120: second substrate
200: tape carrier package 210: first tape carrier package
220: second tape carrier package 230: third tape carrier package
240: fourth tape carrier package 300: printed circuit board

Claims (20)

A display panel for displaying an image;
A printed circuit board electrically connected to the display panel and having a first curvature; And
And a plurality of tape carrier packages (TCP) electrically connecting the printed circuit board and the display panel,
Wherein the intervals between the tape carrier packages in an area overlapping the display panel are respectively smaller than the intervals between the tape carrier packages in an area overlapping the printed circuit board. The method according to claim 1,
The plurality of tape carrier packages comprising first to third tape carrier packages spaced from one another,
Wherein the intervals between the first to third tape carrier packages in the area overlapping the display panel are respectively smaller than the intervals between the first to third tape carrier packages in the area overlapping the printed circuit board Display device. 3. The method of claim 2,
A first straight line perpendicular to the thickness direction of the display panel and the first tape carrier package form a first angle,
A second straight line perpendicular to a thickness direction of the display panel and the second tape carrier package form a second angle,
A third straight line perpendicular to the thickness direction of the display panel and the third tape carrier package form a third angle,
Wherein the first angle is larger than the second angle and the third angle. 3. The method of claim 2,
When viewed in the thickness direction of the display panel,
Wherein one end of the first to third tape carrier packages in an area overlapping the display panel is located on the same line. 3. The method of claim 2,
When viewed in the thickness direction of the display panel,
And one end of the first to third tape carrier packages is located on the same line in an area overlapping the printed circuit board. 3. The method of claim 2,
The shortest distance among the intervals of the first tape carrier package and the second tape carrier package in the area overlapping the display panel is a first display interval,
The shortest distance among the intervals of the second tape carrier package and the third tape carrier package in the area overlapping the display panel is a second display interval,
Wherein the first display interval and the second display interval are the same. The method according to claim 6,
Wherein the shortest distance among the intervals of the first tape carrier package and the second tape carrier package in a region overlapping the printed circuit board is a first printing interval,
The shortest distance among the intervals of the second tape carrier package and the third tape carrier package in the area overlapping the printed circuit board is a second printing interval,
Wherein the first printing interval and the second printing interval are different from each other. 8. The method of claim 7,
Wherein the first display interval and the second display interval are smaller than the first print interval. 8. The method of claim 7,
Wherein the first display interval and the second display interval are smaller than the second print interval. 8. The method of claim 7,
Wherein the tape carrier package further comprises a fourth tape carrier package spaced apart from the first through third tape carrier packages,
Wherein an interval between said third and fourth tape carrier packages in an area overlapping said display panel is smaller than an interval between said third and fourth tape carrier packages in an area overlapping said printed circuit board, Device. 11. The method of claim 10,
Wherein the shortest distance among the intervals of the third tape carrier package and the fourth tape carrier package in the area overlapping the display panel is a third display interval,
Wherein the first to third display intervals are equal to each other. 12. The method of claim 11,
The shortest distance among the intervals of the third tape carrier package and the fourth tape carrier package in the area overlapping the printed circuit board is a third printing interval,
And the third display interval is smaller than the third print interval. 13. The method of claim 12,
Wherein the second printing interval and the third printing interval are different from each other. 14. The method of claim 13,
Wherein the second printing interval is longer than the first printing interval and the third printing interval. 13. The method of claim 12,
Wherein the first printing interval and the third printing interval are the same. The method according to claim 1,
And the display panel has a second curvature. The method according to claim 1,
Wherein a difference between the intervals between the tape carrier packages in an area overlapping the display panel and a gap between the tape carrier packages in an area overlapping the printed circuit board is larger as the first curvature is larger, . The method according to claim 1,
The greater the modulus of elasticity of the plurality of tape carrier packages, the greater the difference between the spacings between the tape carrier packages in the area overlapping the display panel and the spacing between the tape carrier packages in the area overlapping the printed circuit board A display device that is large. The method according to claim 1,
Wherein the display panel has a radius of curvature of 3000 to 5000 mm. 17. The method of claim 16,
Wherein the first curvature is different from the second curvature.
KR1020140034874A 2014-03-25 2014-03-25 Display device KR20150111545A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170071105A (en) * 2015-12-15 2017-06-23 엘지디스플레이 주식회사 Display device
US10091880B2 (en) 2015-01-14 2018-10-02 Samsung Display Co., Ltd. Printed circuit board unit display apparatus and method of manufacturing the display apparatus
US10820417B2 (en) 2018-07-06 2020-10-27 Samsung Display Co., Ltd. Display apparatus and method for manufacturing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10091880B2 (en) 2015-01-14 2018-10-02 Samsung Display Co., Ltd. Printed circuit board unit display apparatus and method of manufacturing the display apparatus
KR20170071105A (en) * 2015-12-15 2017-06-23 엘지디스플레이 주식회사 Display device
US10820417B2 (en) 2018-07-06 2020-10-27 Samsung Display Co., Ltd. Display apparatus and method for manufacturing the same

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