KR20170038548A - Display device having functional panel - Google Patents

Display device having functional panel Download PDF

Info

Publication number
KR20170038548A
KR20170038548A KR1020150138066A KR20150138066A KR20170038548A KR 20170038548 A KR20170038548 A KR 20170038548A KR 1020150138066 A KR1020150138066 A KR 1020150138066A KR 20150138066 A KR20150138066 A KR 20150138066A KR 20170038548 A KR20170038548 A KR 20170038548A
Authority
KR
South Korea
Prior art keywords
display
panel
display panel
tape
adhesive force
Prior art date
Application number
KR1020150138066A
Other languages
Korean (ko)
Inventor
이용갑
Original Assignee
엘지디스플레이 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.)
Filing date
Publication date
Application filed by 엘지디스플레이 주식회사 filed Critical 엘지디스플레이 주식회사
Priority to KR1020150138066A priority Critical patent/KR20170038548A/en
Publication of KR20170038548A publication Critical patent/KR20170038548A/en

Links

Images

Classifications

    • 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
    • C09J7/021—
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention relates to a display device including an adhesive force improving tape for binding and fixing a display panel and a functional panel.
A display device according to an embodiment of the present invention includes a display panel; A functional panel located above the display panel; An adhesive layer for adhering the display panel and the functional panel; And an adhesive strength improving tape for binding and fixing the display panel and the functional panel.

Description

[0001] DISPLAY DEVICE HAVING FUNCTIONAL PANEL [0002]

The present invention relates to a display device having a functional panel, and more particularly to a display device capable of firmly bonding a display panel and a functional panel by using an adhesive force improving tape when fixing the functional panel to a display device.

2. Description of the Related Art [0002] Recently, various portable electronic devices such as a mobile phone, a PDA, a tablet PC, and a laptop PC have been developed and a demand for a flat panel display device Is gradually increasing. As such flat panel display devices, a liquid crystal display (LCD), an organic light emitting display (OLED), and the like have been actively studied.

On the other hand, personal computers, portable communication devices, and other personal-purpose information processing devices generally use an input device such as a keyboard, a mouse, and a digitizer to configure an interface with a user. However, as the development of portable electronic devices has expanded, a touch panel (touch panel), in which a user directly touches the screen with a hand or a pen to input information, is attached to the liquid crystal panel and a flat panel display Device is being proposed

As described above, the flat panel display device can be used as a flat panel display device having various functions by attaching various functional panels such as a protective film or a protective glass for protecting the touch panel or the device on the whole surface thereof.

The flat panel display device and the functional panel are bonded together by an adhesive layer made of transparent resin or the like. The following problems occur in the adhesion of the flat panel display device and the functional panel by the adhesive layer.

Portable electronic devices, such as tablet PCs or mobile phones, to which functional panels such as touch panels or protective panels are attached, are mainly used on the move. However, the adhesive layer between the functional panel and the flat panel display device may be broken by an external force such as flow, shock, or the like. Therefore, the flat panel display device is liable to be delaminated from the functional panel. In the case where the delamination starting from the outer area of the display device extends to the display area, an error occurs in adjusting the transmittance of light passing through the display device, and image quality defects such as white dots appear on the screen.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device including an adhesive strength improving tape for solving the delamination of an adhesive layer in a display device having a functional panel.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a display device including a display panel, a functional panel disposed above the display panel, an adhesive layer for attaching the display panel and the functional panel, Adhesive strength improving tape.

The adhesive force improving tape includes a first portion bonded to the lower surface of the display panel, a second portion bonded to the lower surface of the functional panel, and a third portion bonded to the display panel and the side surface of the adhesive layer, connecting the first portion and the second portion can do.

The display panel may include a display portion that displays an image, a light emitting portion that is located below the display portion and that supplies light to the display portion, and a conductive tape that binds and fixes the light emitting portion to the display portion.

The conductive tape can cover a part of the lower surface of the light emitting portion, the side surface of the display portion, and the side surface of the light emitting portion.

The first portion of the adhesive force improving tape is bonded to the conductive tape at the lower surface of the light emitting portion and the third portion of the adhesive force improving tape can be bonded to the conductive tape at the side surface of the display portion and at the side surface of the light emitting portion.

The display unit includes a TFT array substrate configured to drive the display unit, a color filter substrate disposed on the TFT array substrate, and a sealing member attaching the TFT array substrate and the color filter substrate. The adhesive force improving tape adheres to the display panel and the functional panel, The combined force of the members can be increased.

The first portion of the adhesive force improving tape may be provided to reduce the impact applied to the corner portion of the display panel by being adhered to the corner portion of the display panel.

The first portion of the adhesive force improving tape may be a shape determined in consideration of the adhesive force between the display panel and the functional panel and the release of heat generated in the display panel.

The first portion of the adhesive strength improving tape may be in the shape of a sector.

The adhesive strength improving tape may be made of one of polyethylene terephthalate (polyethyleneterephthalate) or silicone material.

According to the embodiment of the present invention, the adhesive force improving tape binds and fixes the display panel and the functional panel, so that the deterioration of the adhesive strength of the adhesive layer due to the breakage of the adhesive layer can be minimized.

According to the embodiment of the present invention, the adhesive force between the display panel and the functional panel is enhanced, and the first polarizing layer can be prevented from peeling off from the adhesive layer.

According to the embodiment of the present invention, external exposure of the liquid crystal layer due to breakage of the sealing member is prevented, and breakage of the liquid crystal layer can be minimized.

According to the embodiment of the present invention, the first portion of the adhesive force improving tape is formed into a sector shape, so that the adhesive force between the display panel and the functional panel can be improved and the heat dissipation of the display panel can be facilitated.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is an exploded perspective view of a display device according to an embodiment of the present invention.
2 is a cross-sectional view of a display device according to an embodiment of the present invention.
3A and 3B are cross-sectional views illustrating a tape for improving adhesion of a display device according to an embodiment of the present invention.
4 is a plan view of a folding force improving tape of a display device according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments 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. To fully disclose the scope of the invention to a person skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Where the terms "comprises," "having," "consisting of," and the like are used in this specification, other portions may be added as long as "only" is not used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if the temporal relationship is described by 'after', 'after', 'after', 'before', etc., May not be continuous unless they are not used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

The terms "X-axis direction "," Y-axis direction ", and "Z-axis direction" should not be construed solely by the geometric relationship in which the relationship between them is vertical, It may mean having directionality.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, May refer to any combination of items that may be presented from more than one.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a display device according to an embodiment of the present invention. 2 is a cross-sectional view of a display device according to an embodiment of the present invention. The structure of the display device will be described together with an exploded perspective view and a cross-sectional view of the display device.

At this time, various display devices can be applied as the display device, but for convenience of explanation, the liquid crystal display device will be described as an example. However, examples of such a specific display device do not limit the scope of the present invention, and the present invention can be applied to various flat panel display devices such as a liquid crystal display device, an organic light emitting display device, a plasma display device, an electrophoretic display device, There will be.

1 and 2, a display device according to an exemplary embodiment of the present invention includes a functional panel 100 and a display panel 110. As shown in FIG. The functional panel 100 is located above the display panel 110.

The display panel 110 includes a display unit 120 and a light emitting unit 130.

The display section 120 includes a TFT array substrate 126, a color filter substrate 124, a liquid crystal layer 125, a first polarizing layer 123 and a second polarizing layer 127. The liquid crystal layer 125 is disposed between the TFT array substrate 126 and the color filter substrate 124. The second polarizing layer 127 is positioned below the display unit 120. The first polarizing layer 123 is located on the color filter substrate 124. The light transmitted through the second polarizing layer 127 is polarized. Then, the polarized light passes through the liquid crystal layer 125. At this time, the liquid crystal layer 125 rotates the polarization axis of the polarized light corresponding to the image signal. The first polarizing layer 123 absorbs the polarized light transmitted through the liquid crystal layer 125 in correspondence with the rotated axis.

The TFT array substrate 126 is configured to drive the display portion 120. That is, various components for driving the display unit 120 are formed on the TFT array substrate 126. The TFT array substrate 126 is formed with a plurality of gate lines (not shown) and data lines (not shown) arranged vertically and horizontally on the TFT array substrate 126 to define a plurality of pixel regions. A thin film transistor (not shown), which is a switching element, is formed in each pixel region, and a pixel electrode (not shown) is formed on the pixel region. The thin film transistor (not shown) includes a gate electrode (not shown), a semiconductor layer (not shown), a source electrode (not shown), and a drain electrode (not shown). A gate electrode (not shown) is electrically connected to a gate line (not shown). A semiconductor layer (not shown) is formed by depositing amorphous silicon on a gate electrode (not shown). A source electrode (not shown) and a drain electrode (not shown) are formed on a semiconductor layer (not shown), and are electrically connected to a data line (not shown) and a pixel electrode (not shown). Here, the semiconductor layer is not limited thereto, and may be formed of various materials such as an oxide semiconductor or an organic semiconductor layer.

The TFT array substrate 126 includes a display region and a non-display region. The display area refers to an area where an image is displayed by driving the display device, and the non-display area refers to an outer area formed around the display area without displaying an image. Further, a sealing member 129 can be applied to the non-display region.

The color filter substrate 124 includes a color filter and a black matrix. The color filter includes a plurality of sub-color filters implementing the colors of red (R), green (G), and blue (B). The black matrix separates the sub-color filters and blocks light transmitted through the liquid crystal layer 125.

The sealing member 129 is positioned between the TFT array substrate 126 and the color filter substrate 124. The sealing member 129 may be disposed along the outer peripheral region of the TFT array substrate 126. And may be disposed along the outer area of the lower portion of the color filter substrate 124. Therefore, the sealing member 129 can bond the TFT array substrate 126 and the color filter substrate 124 together.

The backlight unit 130 is disposed under the second polarizing layer 127. That is, the light emitting unit 130 is disposed under the display unit 120. At this time, a cell tape 150 may be positioned between the light emitting unit 130 and the display unit 120. The cell tape 150 may adhere the light emitting portion 130 to the display portion 120. [ That is, the cell tape 150 can bond the light emitting unit 130 and the display unit 120 together.

The light emitting portion 130 includes an LED substrate 136, a light guide plate 134, and an optical sheet 132.

The LED substrate 136 is mounted on the lower side of the display unit 120 and has a plurality of LEDs (Light Emitting Devices) for emitting light. The light guide plate 134 guides the light emitted from the LED and supplies the light to the display unit 120. The optical sheet 132 is provided between the display portion 120 and the light guide plate 134. The optical sheet 132 includes a diffusion sheet and a prism sheet. The optical sheet 132 is guided by the light guide plate 134 to diffuse and condense the light supplied to the display unit 120. At this time, the reflection plate is disposed under the light guide plate 134. The reflection plate reflects the light guided to the lower portion of the light guide plate 134. The light guide plate 134 and the optical sheet 132 may be housed in the lower cover 160.

The functional panel 100 is disposed above the display panel 110. An upper cover 140 is disposed on the upper edge region of the functional panel 100. The upper cover 140 is defective with the lower cover 160, thereby completing the display device.

The light guide plate 134 guides the light input from the LED to the display unit 120. The light incident on one side face of the light guide plate 134 is reflected on the upper and lower surfaces of the light guide plate 134 and propagated to the other side face and then outputted to the outside of the light guide plate 134. At this time, the light guide plate 134 may be formed of a material such as PMMA (Polymethyl-Methacrylate), but is not limited thereto. A pattern or holes may be formed on the lower surface of the light guide plate 134 to scatter incident light, and the light incident through the light-incident surface may reflect the upward direction. The optical sheet 132 is supplied to the display unit 120 by improving the efficiency of light output from the light guide plate 134. The optical sheet 132 includes a diffusion sheet and a prism sheet. The optical sheet 132 spreads the light output from the light guide plate 134. The prism sheet condenses the light diffused by the diffusion sheet so that uniform light is supplied to the display unit 120.

The LED substrate 136 may include R, G, and B LEDs emitting white light of R (Red) / G (Green) / B (Blue), or LED devices emitting white light.

The functional panel 100 is located above the display panel 110. The functional panel 100 may be, for example, a cover glass for absorbing an external impact to prevent the display panel 110 from being damaged, a touch panel for inputting data by a touch of a human hand or pens, The functional panels 100 can be applied.

The adhesive layer 122 is located between the functional panel 100 and the display panel 110. The adhesive layer 122 can attach the functional panel 100 to the display panel 110. [ That is, the adhesive layer 122 can bond the functional panel 100 and the display panel 110 together. The adhesive layer 122 may be made of transparent resin such as OCA (Optical Clear Adhesive) and OCR (Optical Clear Resin). Any material can be used as long as the material that can be used as the adhesive layer 122 is transparent and the light emitted from the display panel 110 can be output without any change in the optical path or optical characteristics such as refraction. The adhesive layer 122 may be formed by applying various methods such as a slit coating method, a screen coating method, and a syringe coating method.

The conductive tape 180 is located on the upper side of the display portion 120. The conductive tape 180 may be located above the TFT array substrate 126. At this time, the conductive tape 180 is located in the non-display area of the TFT array substrate 126. In other words, the conductive tape 180 may be located in the outer area of the TFT array substrate 126. In other words, the conductive tape 180 may be attached to the upper surface of the TFT array substrate 126. At this time, the sealing member 129 is positioned between the TFT array substrate 126 and the color filter substrate 124. That is, the sealing member 129 may be located on the top surface of the TFT array substrate 126. Therefore, the conductive tape 180 may be located on the side surface of the sealing member 129. The conductive tape 180 may extend to the outer area of the TFT array substrate 126. [ Therefore, the conductive tape 180 may be connected to a metal part such as a lower cover to discharge the correction device, which is generated on the upper surface of the display panel 110, to the outside.

The conductive tape 180 may be adhered to a side surface of the display portion 120, a side surface of the light emitting portion 130, and a lower surface portion of the light emitting portion 130. That is, the conductive tape 180 may cover a portion of the side surface of the display portion 120, the side surface of the light emitting portion 130, and the lower surface of the light emitting portion 130. At this time, one portion of the conductive tape 180 may cover the side surface of the display portion 120 and the side surface of the light emitting portion 130. Further, an extended portion connected to one portion of the conductive tape 180 may cover a portion of the lower surface of the light emitting portion 130. Therefore, the conductive tape 180 can bind and fix the light emitting portion 130 to the display portion 120.

The conductive tape 180 may be an ITO tape or an IZO tape formed by forming a transparent metal oxide layer such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide) on a film made of resin or the like, Lt; / RTI > The conductive tape 180 such as an ITO tape or an IZO tape is merely an embodiment, and the present invention is not limited thereto.

The adhesive strength improving tape 170 is adhered to the display panel 110 and the functional panel 100. The adhesive strength improving tape 170 can bind and fix the display panel 110 and the functional panel 100 together. At this time, the adhesive force improving tape 170 includes a first portion, a second portion and a third portion. Wherein the third portion refers to the portion between the first portion and the second portion.

The first portion of the adhesive force improving tape 170 may be positioned below the display panel 110. The first portion of the adhesive force improving tape 170 can be adhered to the lower surface of the display panel 110. [ At this time, the first portion of the adhesive force improving tape 170 may be bonded to the conductive tape 180 on the lower surface of the light emitting portion 130. A part of the conductive tape 180 may cover the side surface of the display portion 120 of the display panel 110 and the side surface of the light emitting portion 130. [ The extended portion connected to one portion of the conductive tape 180 may cover a portion of the lower surface of the light emitting portion 130 of the display panel. The first portion of the adhesive force improving tape 170 can be adhered to the extended portion of the conductive tape 180 covering a portion of the lower surface of the light emitting portion 130 of the display panel 110. [

The second portion of the adhesive strength improving tape 170 may be located under the functional panel 100. At this time, the second portion of the adhesive force improving tape 170 may be adhered to the lower surface of the functional panel 100.

 The third portion of the adhesive force improving tape 170 is a portion between the first portion and the second portion. The third portion of the adhesive force improving tape 170 may be adhered to the side surface portions of the display panel 110 and the adhesive layer 122. [ The third portion of the adhesive force improving tape 170 may be bonded to the conductive tape 180 on the side surface of the display portion 120 of the display panel 110 and the side surface of the light emitting portion 130. A part of the conductive tape 180 may cover the side surface of the display portion 120 of the display panel 110 and the side surface of the light emitting portion 130. [ Further, the extended portion connected to one portion of the conductive tape 180 may cover a portion of the lower surface of the display portion 120 of the display panel 110. The third portion of the adhesive force improving tape 170 can be adhered to a portion of the conductive tape 180 covering the side surface of the display portion 120 of the display panel 110 and the side surface of the light emitting portion 130. [

Therefore, the adhesive force improving tape 170 can bind and fix the display panel 110 and the functional panel 100 together. Accordingly, the adhesive strength improving tape 170 can minimize the breakage of the adhesive layer 122 between the display panel 110 and the functional panel 100.

Therefore, delamination between the display panel 110 and the functional panel 100 due to breakage of the adhesive layer 122 can be prevented. Accordingly, it is possible to minimize the error in the adjustment of the transmittance of the light passing through the display device. Therefore, it is possible to prevent image quality deterioration that may occur in the display device. The principle of minimizing peeling of the adhesive force improving tape 170 between the display panel 110 and the functional panel 100 will be described later in detail with reference to FIG. 3A.

The adhesive force improving tape 170 is used to fix the display panel 110 and the functional panel 100 to each other to fix the TFT array substrate 126 and the color filter substrate 124 of the display panel 110 129) can be increased. Therefore, breakage of the sealing member 129 can be minimized.

It is possible to prevent the liquid crystal layer 125 between the TFT array substrate 126 and the color filter substrate 124 from being exposed to the outside due to breakage of the sealing member 129. Accordingly, breakage of the liquid crystal layer 125 can be minimized. The principle of minimizing the breakage of the sealing member 129 will be described later in detail with reference to FIG. 3B.

3A and 3B are cross-sectional views illustrating an adhesive strength improving tape 170 of a display device according to an embodiment of the present invention.

As shown in Fig. 3A, the adhesive force improving tape 170 is bonded to the display panel 110 and the functional panel 100. Fig. The first portion of the adhesive force improving tape 170 may be positioned below the display panel 110. At this time, the first portion of the adhesive force improving tape 170 may be adhered to the lower surface of the display panel 110. At this time, the first portion of the adhesive force improving tape 170 may be adhered to the extended portion of the conductive tape 180 covering a part of the lower surface of the light emitting portion 130 of the display panel 110. The second portion of the adhesive strength improving tape 170 may be located under the functional panel 100. At this time, the second portion of the adhesive force improving tape 170 may be adhered to the lower surface of the functional panel 100. The third portion of the adhesive force improving tape 170 may be attached to the side surfaces of the display panel 110 and the adhesive layer 122. [ At this time, the third portion of the adhesive force improving tape 170 may be adhered to a portion of the conductive tape 180 covering the side surface of the display portion 120 of the display panel 110 and the side surface of the light emitting portion 130. Therefore, the adhesive strength improving tape 170 can bind and fix the display panel 110 and the functional panel 100 together.

On the other hand, the adhesive layer 122 is located between the display panel 110 and the functional panel 100. When an external force is applied to the functional panel 100, the functional panel 100 may be instantaneously deformed. Therefore, the functional panel 100 may be subjected to a shock. Also, when bending the functional panel 100, the functional panel 100 may be stressed by deformation. At this time, the adhesive layer 122 is positioned between the functional panel 100 and the display panel 110. The adhesive layer 122 can attach the functional panel 100 to the display panel 110. [ Therefore, the impact or stress applied to the functional panel 100 can be transmitted to the adhesive layer 122. At this time, the adhesive layer 122 may be deformed, whereby the adhesive layer 122 may be broken. The adhesive strength of the adhesive layer 122 may decrease as the adhesive layer 122 is broken. Therefore, the first polarizing layer 123 can be peeled off from the adhesive layer 122.

In addition, the first polarizing layer 123 is attached so as to correspond to the display area of the display panel 110. Therefore, when the first polarizing layer 123 is peeled off from the adhesive layer 122, the transmittance of the first polarizing layer 123 in the display area is poorly controlled, and a defect such as a white spot may occur in the display area.

However, according to one embodiment of the present invention, the adhesive strength improving tape 170 may be adhered to the lower surface of the display panel 110 and the lower surface of the functional panel 100. [ At this time, the adhesive force improving tape 170 can bind and fix the display panel 110 and the functional panel 100 together. Therefore, the adhesive force improving tape 170 can more firmly bind the display panel 110 and the functional panel 100. Therefore, the adhesive force of the adhesive layer 122 between the display panel 110 and the functional panel 100 can be enhanced. The adhesive layer 122 between the display panel 110 and the functional panel 100 can be more firmly adhered to the display panel 110 and the functional panel 100. [ Therefore, the deformation of the adhesive layer 122 due to impact or stress transmitted to the adhesive layer 122 can be minimized. As a result, a decrease in adhesion of the adhesive layer 122, which may occur as the adhesive layer 122 is broken, can be minimized. Therefore, the first polarizing layer 123 can be prevented from being peeled off from the adhesive layer 122.

At this time, occurrence of defective control of the transmittance of the first polarizing layer 123, which may occur in the display area of the display panel 110, is minimized, and occurrence of defects such as white spots in the display area can be minimized.

3B, the display panel 110 includes a display portion 120, a light emitting portion 130, and a conductive tape 180. The display portion 120 includes a TFT array substrate 126 and a color filter substrate 124. A liquid crystal layer 125 is positioned between the TFT array substrate 126 and the color filter substrate 124 of the display unit 120. At this time, the sealing member 129 bonds the TFT array substrate 126 and the color filter substrate 124 together. Therefore, the sealing member 129 seals the liquid crystal layer 125 of the display unit 120. The light emitting unit 130 is located below the display unit 120 and the conductive tape 180 binds and fixes the light emitting unit 130 to the display unit 120. The adhesive strength improving tape 170 is adhered to the display panel 110 and the functional panel 100.

On the other hand, when an external force is applied to the display panel 110, the light emitting portion 130 and the TFT array substrate 126 of the display portion 120 can receive a load. At this time, the external force may be concentrated on the sealing member 129 for attaching the TFT array substrate 126 and the color filter substrate 124 together. Therefore, the sealing member 129 can be broken. Accordingly, the liquid crystal layer 125 can be exposed to the outside.

However, according to one embodiment of the present invention, the adhesive strength improving tape 170 may be adhered to the lower surface of the display panel 110 and the lower surface of the functional panel 100. [ At this time, the adhesive force improving tape 170 can bind and fix the display panel 110 and the functional panel 100 together. Therefore, it is possible to further strengthen the bonds between the respective layers constituting the display panel 110. This can increase the bonding force of the sealing member 129 for attaching the TFT array substrate 126 of the display unit 120 and the color filter substrate 124 together. Therefore, breakage of the sealing member 129 due to an impact applied to the sealing member 129 due to external force can be minimized.

Therefore, it is possible to prevent the liquid crystal layer 125 from being exposed to the outside due to breakage of the sealing member 129. As a result, breakage of the liquid crystal layer 125 can be minimized, and defects that may occur in the display region of the display device can be minimized.

4 is a plan view of an adhesive strength improving tape 170 of a display device according to an embodiment of the present invention.

The adhesive strength improving tape 170 is adhered to the display panel 110 and the functional panel 100. At this time, the adhesive force improving tape 170 includes a first portion, a second portion and a third portion. Wherein the third portion refers to the portion between the first portion and the second portion.

The first portion of the adhesive force improving tape 170 may be positioned below the display panel 110. The first portion of the adhesive force improving tape 170 may be adhered to the lower surface of the display panel 110. [ At this time, the first portion of the adhesive force improving tape 170 may be adhered to the corner portion of the display panel 110.

The second portion of the adhesive strength improving tape 170 may be located under the functional panel 100. At this time, the second portion of the adhesive force improving tape 170 may be adhered to the lower surface of the functional panel 100.

As described above, the adhesive strength improving tape 170 in the present invention is bonded not only to the lower surface of the display panel 110, but also to the lower surface of the functional panel 100. At this time, the first part of the adhesive force improving tape 170 is adhered to the corner of the display panel 110 for the following reason.

In the structure in which the adhesive layer is formed on the display panel 110 without the adhesive strength improving tape 170 and the functional panel 100 is adhered to the display panel 110, the functional panel 100 may receive a shock have. At this time, the impact applied to the functional panel 100 can be transmitted to the adhesive layer. Therefore, the adhesive layer can be deformed. At this time, the adhesive layer may be broken. Especially, the impact can be concentrated on the corner portion of the adhesive layer. The corner portion of the adhesive layer can be subjected to a relatively greater impact. Therefore, the corner portion of the adhesive layer is vulnerable to impact. Accordingly, when an impact is applied to the corner portion of the adhesive layer, the adhesive layer in the corner portion is more likely to be broken.

Therefore, as the adhesive layer in the corner portion is broken, the adhesion of the corner portion of the adhesive layer may be deteriorated. Whereby the first polarizing layer can be peeled from the adhesive layer. Particularly, since the corner portion of the adhesive layer is more likely to break, the interlayer delamination tends to occur at the corner portion of the first polarizing layer.

Further, the first polarizing layer is attached so as to correspond to the display area of the display panel 110. Therefore, when the corner portion of the first polarizing layer is peeled from the corner portion of the adhesive layer, the transmittance of the first polarizing layer at the corner of the display region is poorly controlled, and a defect such as a white spot is generated at the corner portion of the display region do.

However, according to one embodiment of the present invention, the adhesive force improving tape 170 may be adhered to the lower surface of the display panel 110 and the lower surface of the functional panel 100. [ Further, the adhesive strength improving tape 170 is adhered to the corner of the display panel 110. At this time, the adhesive layer is positioned between the display panel 110 and the functional panel 100. Therefore, the adhesive strength improving tape 170 can bind and fix the display panel 110 and the functional panel 100 together. The binding between the display panel 110 and the corner portion of the functional panel 100 can be further strengthened. The corner portions of the adhesive layer between the display panel 110 and the functional panel 100 can be more firmly adhered to the display panel 110 and the functional panel 100. [ Therefore, breakage of the adhesive layer due to impact transmitted to the corner of the adhesive layer can be minimized. Therefore, deterioration of the adhesion of the corner portion of the adhesive layer, which may occur as the corner portion of the adhesive layer is broken, can be minimized. Thus, peeling from the adhesive layer at the corner of the first polarizing layer can be prevented.

Therefore, occurrence of defective control of the transmittance of the first polarizing layer, which may occur at the corner of the display area of the display panel 110, is minimized, and occurrence of defects such as white spots at the corner of the display area can be minimized.

Further, the adhesive force improving tape 170 may not be attached to the area corresponding to the display area of the display panel 110, but may be attached to the area corresponding to the outer area of the display area. That is, the adhesive strength improving tape 170 can be attached to the corner of the non-display area of the display panel 110. Therefore, even if the corner portion of the adhesive layer is peeled off by the impact, the corner portion of the display region of the display panel 110 is not affected, and therefore, the image quality deterioration due to peeling can be prevented.

In other words, according to an embodiment of the present invention, the damage of the corner portion of the adhesive layer can be minimized by the impact of the corner portion by the adhesive force improving tape 170 adhered to the corner portion of the display panel 110. When the corner portion of the adhesive layer is broken, the breakage region of the corner portion of the adhesive layer is changed to a non-display region which is an outer region of the display region, not the display region of the display device, thereby preventing the image quality defect at the corner portion of the display region of the display device can do.

Further, the adhesive strength improving tape 170 may be formed of an elastic material so as to absorb the impact and reduce the impact that may be applied to the corner portion of the adhesive layer. The adhesive force improving tape 170 may be formed of, for example, polyethylene terephthalate or a material of a silicon cone, but is not limited thereto.

Also, the first portion of the adhesive force improving tape 170 adhered to the corner of the display panel 110 may have a fan shape. In the case where the first portion of the adhesive force improving tape 170 has a sector shape, the area is larger than the triangle shape. Therefore, when the adhesive force improving tape 170 binds the display panel 110 and the functional panel 100 and fixes them, the adhesive force improving tape 170 increases the surface area of the display panel 110 and the functional panel 100 It can be firmly fixed. Therefore, the corner portions of the adhesive layer can be more firmly adhered to the display panel 110 and the functional panel 100. Further, since the adhesive force improving tape 170 is formed of an elastic material capable of absorbing the impact, the impact can be absorbed. In particular, since the adhesive strength improving tape 170 is adhered to the corner of the display panel 110, the impact transmitted to the corner of the display panel 110 can be absorbed. Accordingly, breakage of the corner portion of the adhesive layer due to impact transmitted to the corner portion of the adhesive layer can be minimized. However, the area of the first portion of the adhesive force improving tape 170 should not be too large. For example, when the shape of the first portion of the adhesive force improving tape 170 is a rectangular shape, the area is wider than that of the fan shape. At this time, due to the enlarged area of the first portion, it is not easy to discharge the heat emitted from the display panel 110 to the outside. Therefore, the temperature of the display panel 110 can be increased. This may lead to a decrease in performance of the display panel 110

However, according to one embodiment of the present invention, the first portion of the adhesive force improving tape 170 may be formed into a fan shape. At this time, the area of the first portion of the adhesive force improving tape 170 is smaller than when the area is rectangular. Therefore, when the first portion of the adhesive force improving tape 170 has a round shape, it is easier to release heat to the outside than when the adhesive force improving tape 170 has a rectangular shape. Therefore, deterioration in performance due to heat emitted from the display panel 110 can be minimized.

That is, the first portion of the adhesive force improving tape 170 is formed into a sector shape, so that the corner portion of the adhesive layer is protected, and the heat release to the outside can be facilitated.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Functional panel
110: Display panel
120:
130:
140: upper cover
150: Cell tape
160: Lower cover
170: Adhesive force improving tape
180: Conductive tape

Claims (10)

Display panel;
A functional panel positioned above the display panel;
An adhesive layer for adhering the display panel and the functional panel; And
And an adhesive force improving tape for binding and fixing the display panel and the functional panel. The method according to claim 1,
The adhesive force improving tape
A first portion bonded to a lower surface of the display panel, a second portion bonded to a lower surface of the functional panel, and a third portion connecting the first portion and the second portion and bonded to the display panel and a side surface of the adhesive layer, A display comprising. 3. The method of claim 2,
In the display panel,
A display device comprising: a display portion for displaying an image; a light emitting portion located below the display portion for supplying light to the display portion; and a conductive tape for binding and fixing the light emitting portion to the display portion. The method of claim 3,
Wherein the conductive tape covers a part of a lower surface of the light emitting portion, a side surface of the display portion, and a side surface of the light emitting portion. 5. The method of claim 4,
Wherein the first portion of the adhesive force improving tape is bonded to the conductive tape at a lower surface of the light emitting portion,
And the third portion of the adhesive force improving tape is bonded to the conductive tape at the side surface of the display portion and at the side surface of the light emitting portion. The method of claim 3,
Wherein the display unit includes a TFT array substrate configured to drive the display unit, a color filter substrate disposed on the TFT array substrate, and a sealing member attaching the TFT array substrate and the color filter substrate together,
And the adhesive force improving tape is adhered to the display panel and the functional panel to increase the combined force of the sealing member. 3. The method of claim 2,
Wherein the first portion of the adhesive force improving tape is adhered to a corner portion of the display panel to reduce an impact applied to a corner portion of the display panel. 8. The method of claim 7,
Wherein the first portion of the adhesive force improving tape has a shape determined in consideration of an adhesive force between the display panel and the functional panel and a release of heat generated in the display panel. 9. The method of claim 8,
Wherein the first portion of the adhesive force improving tape has a fan shape. 8. The method of claim 7,
Wherein the adhesive force improving tape is made of one of polyethylene terephthalate or silicone material.
KR1020150138066A 2015-09-30 2015-09-30 Display device having functional panel KR20170038548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150138066A KR20170038548A (en) 2015-09-30 2015-09-30 Display device having functional panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150138066A KR20170038548A (en) 2015-09-30 2015-09-30 Display device having functional panel

Publications (1)

Publication Number Publication Date
KR20170038548A true KR20170038548A (en) 2017-04-07

Family

ID=58583797

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150138066A KR20170038548A (en) 2015-09-30 2015-09-30 Display device having functional panel

Country Status (1)

Country Link
KR (1) KR20170038548A (en)

Similar Documents

Publication Publication Date Title
US9436340B2 (en) Liquid crystal display device with touch panel
RU2587432C2 (en) Slim type touch panel and mobile terminal including panel
US9395571B2 (en) Touch display panel and touch display apparatus
JP5235769B2 (en) Liquid crystal display
US20180173049A1 (en) Metal wire grid polarizer and liquid crystal display device
US20140049892A1 (en) Touch panel and touch display panel
KR102272046B1 (en) Display device having funtional panel
TWI557609B (en) Touch display apparatus
KR102174819B1 (en) Display device
US10770688B2 (en) Display device
KR20180081654A (en) Display Apparatus
TW200903074A (en) Input device, method of manufacturing the same, and electro-optical device
US8681285B2 (en) Liquid crystal display device
US9436305B2 (en) Touch display apparatus
US20160231774A1 (en) Display module
KR101378344B1 (en) Image display device
KR20190050320A (en) Backlight and display device comprising backlight unit
KR102214631B1 (en) Display device having functional panel
KR20170077721A (en) Liquid crystal display device
KR102587211B1 (en) Liquid Crystal Display Device
KR20170072526A (en) Display device having functional substrate and method for fabricating the same
JP5385475B2 (en) Mobile phone equipment
KR20170038548A (en) Display device having functional panel
KR20160011573A (en) Liquid crystal display and method for fabricating the same
KR20160038936A (en) Liquid crystal display device