KR20150047800A - Display module for waterproof structure using OCA - Google Patents

Display module for waterproof structure using OCA Download PDF

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Publication number
KR20150047800A
KR20150047800A KR1020130127702A KR20130127702A KR20150047800A KR 20150047800 A KR20150047800 A KR 20150047800A KR 1020130127702 A KR1020130127702 A KR 1020130127702A KR 20130127702 A KR20130127702 A KR 20130127702A KR 20150047800 A KR20150047800 A KR 20150047800A
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KR
South Korea
Prior art keywords
lcd
module
frame
panel
backlight unit
Prior art date
Application number
KR1020130127702A
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Korean (ko)
Inventor
강주성
김상우
Original Assignee
(주)넥스디스플레이
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Application filed by (주)넥스디스플레이 filed Critical (주)넥스디스플레이
Priority to KR1020130127702A priority Critical patent/KR20150047800A/en
Publication of KR20150047800A publication Critical patent/KR20150047800A/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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

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

Abstract

The present invention relates to a display module. The display module according to the present invention includes an LCD module which a liquid crystal display (LCD) panel and a backlight unit which supplies light to the rear side of the LCD panel, a touch screen module which is located on the upper side of the LCD panel and senses a contact from the outside, and converts the contacted position into an electrical signal, and a bonding part which bonds the LCD module to the touch screen module. The bonding part surrounds the backlight unit. According to the present invention, a waterproof and dustproof structure to prevent foreign materials or moisture from penetrating through the inside in a display module manufacturing process is easily formed by surrounding the outer side of a frame of the backlight module using a bonding member like OCA.

Description

Display module for waterproof structure using OCA "

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display module, and more particularly, to a display module manufacturing method that realizes a waterproof and dustproof structure in manufacturing a display module.

2. Description of the Related Art In recent years, flat panel display devices such as a liquid crystal display (LCD), a plasma display panel (PDP), and an organic electro-luminescence display (OELD) have been in widespread use. Among them, the diffusion rate of the liquid crystal display device is more conspicuous.

1 is a view showing a configuration of an LCM (LCD Module).

1, the LCM includes a polarizer 10, an LCD 20, a flexible printed circuit board (FPCB) 30, and a backlight unit (BLU) 40.

The polarizing plate 10 functions as a light (polarized light) that vibrates in various directions while vibrating only in one direction. The polarizing plate 10 may be positioned on both sides of the LCD 20 to perform a polarizing function.

The LCD 20 is a display element for displaying an image. In particular, a TFT LCD is a display device that injects liquid crystal between a TFT glass and a color filter glass, and controls the passage of light by changing the arrangement state of the liquid crystal by applying a voltage.

The LCD 20 is provided with an LCD driver IC. The LCD driver IC is a device that controls the voltage and the screen so that the LCD can be driven through the CPU chip and the communication interface.

The FPCB 30 is a driving circuit pattern and a component mounting board.

The BLU 40 uses a side view white LED light source and supplies a light source to the LCD 20 through various sheets.

2. Description of the Related Art Recently, liquid crystal display devices have been widely used in mobile phones, smart phones, notebook computers, PDAs, and tablet PCs, depending on the tendency of thinning and high transmissivity of image display devices.

In accordance with the demand for thinning and high transmissivity, air zero gap bonding, which is a method of assembling TSM (Touch Screen Module) and LCM (LCD Module) in the manufacturing process of a liquid crystal display device, Widely used.

In the conventional LCD, the air gap is applied to the touch screen panel to minimize the LCD noise on the touch screen panel. However, the air zero gap bonding method uses OCA (Optical Clear Adhesive) to attach the LCD and the touch screen panel, And the gap portion is processed to improve the light transmittance, the luminance, and the C / R value, thereby lowering the consumption power consumption.

2 is a structural view for explaining an air zero gap bonding method in a manufacturing process of a display module.

Referring to FIG. 2, the air zero gap bonding method is a method of bonding the LCM 100 and the TSM 200 using an adhesive 300.

The LCM 100 includes a panel 110 and a BLU 120. The TSM 200 includes a window glass 210 and a sensor 220.

3 is a view showing a laminated structure of an air-zero gap bonding method in a display module manufacturing process.

3, the panel 110 includes an upper polarizer 111, a color filter glass 112, a liquid crystal 113, a TFT glass 114, (Down Pol) < / RTI >

The BLU 120 includes a curtain tape 121, prism sheets 122 and 123, a diffuser sheet 124, an LGP 125, a reflector sheet 126 ), And a frame 127.

The TSM 200 comprises an adhesive 224 for bonding the window glass 210, the ITO film or glass 222 and the window glass 210 to the ITO film or glass 222.

Fig. 4 is a diagram showing an internal configuration of the LCM. Fig.

The LCM 100 comprises a panel 110 and a BLU 120.

The panel 110 includes an upper polarizer 111, a color filter glass 112, a liquid crystal 113, a TFT glass 114, a lower polarizer 115 ).

The upper polarizer 111 is orthogonal to the lower polarizer 115 and serves to apply a light flow in a predetermined direction.

The color filter glass 112 serves to express the transmitted light of the liquid crystal 113 in R, G, and B colors.

The liquid crystal 113 serves to transmit or block light according to the voltage applied by the TFT glass 114.

The TFT glass 114 applies a gate voltage that matches the input image.

The lower polarizer 115 is orthogonal to the upper polarizer 111 and functions to apply a light flow in a predetermined direction.

The BLU 120 includes a curtain tape 121, prism sheets 122 and 123, a diffuser sheet 124, an LGP 125, a reflector sheet 126 ), And a frame 127.

The curtain tapes 121 serve to prevent light leakage and seat the panel 110.

The prism sheets 122 and 123 refract and diffuse light diffused from the diffuser sheet 124 to improve the brightness.

The diffuser sheet 124 scatters light emitted from the LGP surface to uniformize the brightness.

The LGP 125 converts the LED, which is a point light source, into a surface light source.

The reflector sheet 126 reflects light emitted from the light source to improve light efficiency.

The frame 127 serves to maintain the basic shape of the BLU 120.

As described above, in the conventional display module manufacturing process, the LCM 100 and the TSM 200 are combined with each other. Specifically, the LCM 100 and the TSM 200 are combined using the adhesive agent 300 .

However, in the conventional display module manufacturing process, foreign matter or moisture may penetrate into the LCM 100 and the TSM 200, resulting in a problem in appearance and function of the display module.

Korean Patent Publication No. 10-2004-0000143

It is an object of the present invention to provide a display module that can prevent foreign substances or moisture from penetrating into the display module when the display module is manufactured.

The objects of the present invention are not limited to the above-mentioned objects, and other objects 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 module including an LCD (Liquid Crystal Display) panel, an LCD module including a backlight unit for providing light on a rear surface of the LCD panel, A touch screen module disposed on an upper surface of the panel for detecting contact from the outside and converting the contact position into an electrical signal and an adhesive portion for adhering the LCD module and the touch screen module, , And the adhesive portion is formed to surround the backlight unit.

The backlight unit includes a frame for maintaining the shape of the backlight unit and a sheet module which is disposed in the frame and is laminated with a plurality of sheets for transmitting light emitted from the light source to the LCD panel And the adhesive portion may be formed to surround the outer surface of the frame.

The frame may have a rectangular bottom surface, and the adhesive portion may be formed in a cross shape when expanded, and a portion protruding in a cross shape may be folded to enclose the frame.

The bonding portion may be implemented with OCA (Optical Clear Adhesive).

According to the present invention, the outer surface of the frame of the backlight module is enclosed by using an adhesive member such as OCA to easily realize a waterproof and dustproof structure for preventing foreign matter and moisture from penetrating into the inside of the display module manufacturing process have.

1 is a view showing a configuration of an LCM (LCD Module).
2 is a structural view for explaining an air zero gap bonding method in a manufacturing process of a display module.
3 is a view showing a laminated structure of an air-zero gap bonding method in a display module manufacturing process.
Fig. 4 is a diagram showing an internal configuration of the LCM. Fig.
5 is a cross-sectional view of a display module according to an embodiment of the present invention.
FIG. 6 is a view illustrating an external appearance of the display module when the adhesive portion is unfolded according to an exemplary embodiment of the present invention. Referring to FIG.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. 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, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted in an ideal or overly formal sense unless expressly defined in the present application Do not.

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 5 is a cross-sectional view of a display module according to an embodiment of the present invention, and FIG. 6 is a view illustrating an external appearance of the display module when the adhesive portion is unfolded according to an exemplary embodiment of the present invention.

5 and 6, the display module of the present invention includes an LCD module, a touch screen module, and a bonding portion 610.

The LCD module includes a liquid crystal display (LCD) panel 110 and a backlight unit for providing light to the back of the LCD panel 110.

In the present invention, the upper polarizer plate 530 is disposed on the upper portion of the LCD panel, and the lower polarizer plate 510 is disposed on the lower portion thereof.

The upper polarizer 530 and the lower polarizer 510 are orthogonal to each other and function to apply a light flow in a constant direction.

The touch screen module is located on the upper surface of the LCD panel 110 and senses contact from the outside and converts the contact position into an electrical signal.

The adhesive portion 610 serves to adhere the LCD module and the touch screen module. In an embodiment of the present invention, the adhesive portion 610 may be implemented with OCA (Optical Clear Adhesive).

In the present invention, the adhesive portion 610 is formed to surround the backlight unit.

The backlight unit includes a frame 127 for maintaining the shape of the backlight unit and a plurality of sheets 122 to 122 disposed in the frame 127 and transmitting light emitted from the light source to the LCD panel 110. [ 126). ≪ / RTI >

The backlight unit includes a curtain tape 121, prism sheets 122 and 123, a diffuser sheet 124, an LGP 125, a reflector sheet 126, And a frame 127.

The curtain tapes 121 serve to prevent light leakage and seat the panel 110. A gap 520 is formed between the lower polarizer 510 and the sheet module.

The prism sheets 122 and 123 refract and diffuse light diffused from the diffuser sheet 124 to improve the brightness.

The diffuser sheet 124 scatters light emitted from the LGP surface to uniformize the brightness.

The LGP 125 converts the LED, which is a point light source, into a surface light source.

The reflector sheet 126 reflects light emitted from the light source to improve light efficiency.

The frame 127 serves to maintain the basic shape of the BLU 120.

In the present invention, the adhesive portion 610 is formed so as to surround the outer surface of the frame 127.

The touch screen module includes a cover glass 620 and an ITO (Indium Tin Oxide) layer 630.

6, the frame 127 is rectangular in shape, and the adhesive portion 610 is formed in a cross shape when it is unfolded, and a portion protruding in a cross shape is folded to form a frame 127, As shown in FIG.

While the present invention has been described with reference to several preferred embodiments, these embodiments are illustrative and not restrictive. It will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention and the scope of the appended claims.

100 LCM 200 TSM
300 adhesives 110 panels
120 BLU 210 window glass
220 sensor 222 ITO film or glass
111 Upper Polarizer 112 Color Filter Glass
113 liquid crystal 114 TFT glass
115 Lower polarizer plate 121 Curtain tape
122 upper prism sheet 123 lower prism sheet
124 Diffuser sheet 125 LGP
126 Reflector sheet 127 Frames
510 Lower polarizer 520 Gap
530 Upper polarizer 610 Adhesive portion
620 cover glass 630 ITO layer

Claims (4)

An LCD module including an LCD (Liquid Crystal Display) panel and a backlight unit for providing light on a rear surface of the LCD panel;
A touch screen module (Touch Screen Module) located on the upper surface of the LCD panel for detecting contact from the outside and converting the contact position into an electrical signal,
And a bonding portion for bonding the LCD module and the touch screen module,
And the adhesive portion is formed to surround the backlight unit.
The method according to claim 1,
The backlight unit includes a frame for maintaining the shape of the backlight unit and a sheet module which is disposed in the frame and is laminated with a plurality of sheets for transmitting light emitted from the light source to the LCD panel In addition,
Wherein the adhesive portion is formed to surround an outer surface of the frame.
The method of claim 2,
Wherein the frame has a rectangular bottom surface, and the adhesive portion is formed in a cross shape when expanded, and a portion protruding in a cross shape is folded to wrap the frame.
The method according to claim 1,
Wherein the adhesive portion is OCA (Optical Clear Adhesive).
KR1020130127702A 2013-10-25 2013-10-25 Display module for waterproof structure using OCA KR20150047800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130127702A KR20150047800A (en) 2013-10-25 2013-10-25 Display module for waterproof structure using OCA

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Application Number Priority Date Filing Date Title
KR1020130127702A KR20150047800A (en) 2013-10-25 2013-10-25 Display module for waterproof structure using OCA

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101851767B1 (en) * 2016-04-12 2018-06-07 (주)넥스디스플레이 Display device for preventing light-leakage using cushion tape
CN108259651A (en) * 2018-01-18 2018-07-06 广东欧珀移动通信有限公司 Display screen component and electronic equipment
EP3227832A4 (en) * 2015-10-30 2018-12-05 Essential Products, Inc. Fingerprint sensors for mobile devices
US10374191B2 (en) 2017-07-03 2019-08-06 Samsung Display Co., Ltd. Display device
US11155724B2 (en) 2017-11-28 2021-10-26 Samsung Display Co., Ltd. Ink composition, preparation method of the same, and fabrication method of window member using the same
US11188164B2 (en) 2019-03-05 2021-11-30 Samsung Display Co., Ltd. Display device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3227832A4 (en) * 2015-10-30 2018-12-05 Essential Products, Inc. Fingerprint sensors for mobile devices
US10223571B2 (en) 2015-10-30 2019-03-05 Essential Products, Inc. Fingerprint sensors for mobile devices
KR101851767B1 (en) * 2016-04-12 2018-06-07 (주)넥스디스플레이 Display device for preventing light-leakage using cushion tape
US10374191B2 (en) 2017-07-03 2019-08-06 Samsung Display Co., Ltd. Display device
US10892441B2 (en) 2017-07-03 2021-01-12 Samsung Display Co., Ltd. Display device
US11672139B2 (en) 2017-07-03 2023-06-06 Samsung Display Co., Ltd. Display device
US11155724B2 (en) 2017-11-28 2021-10-26 Samsung Display Co., Ltd. Ink composition, preparation method of the same, and fabrication method of window member using the same
CN108259651A (en) * 2018-01-18 2018-07-06 广东欧珀移动通信有限公司 Display screen component and electronic equipment
US11188164B2 (en) 2019-03-05 2021-11-30 Samsung Display Co., Ltd. Display device
US11693499B2 (en) 2019-03-05 2023-07-04 Samsung Display Co., Ltd. Display device

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