TW201521195A - Active matrix organic light emitting diode (AMOLED) module structure and the assembling method thereof - Google Patents

Abstract

An active matrix organic light emitting diode (AMOLED) module structure and the assembling method thereof, the module structure is orderly provided with a display module, an optically clear adhesive layer, an ink layer and a cover lens. The ink layer is disposed at a back end of the cover lens so as to form an enclosed space. The module structure further comprises an optical clear resin layer that is filled in the enclosed space, and the optically clear adhesive layer glues the back of the cover lens and the display module together, so as to reduce the thickness of the AMOLED module structure effectively.

Description

AMOLED module structure and assembly method thereof

The invention relates to the field of AMOLED display technology, in particular to an AMOLED module structure and an assembly method thereof.

Compared with the conventional liquid crystal panel, the AMOLED (Active Matrix Organic Light Emitting Diode) has the characteristics of high response speed, high contrast, and wide viewing angle. In addition, AMOLED also has the characteristics of self-illumination, no need to use the backlight board, so it is lighter and thinner than the traditional liquid crystal panel, and the cost of the backlight module can be omitted. The advantages of many aspects make it have a good application prospect.

In the prior art, an OCA (Optically Clear Adhesive) optical adhesive is generally used for packaging an AMOLED module, and an OCR (Optical Clear Resin) water gel cannot be used because an OCR water gel needs to be cured using UV (Ultraviolet Rays), but the AMOLED The luminescent material in the display module is sensitive to UV light. If UV irradiation is used, the luminescent material will be ineffective and the display screen will not be bright. Therefore, OCR water gel is not used in the packaging of AMOLED modules. When the display module (Display Moduel) and the cover glass (Cover Lens) are fully bonded by OCA optical glue, the OCA optical adhesive has a limited absorption rate of the ink on the cover glass, so that a thick OCA is required. Glue, final guide The thickness of the AMOLED module is increased.

Fig. 1 shows an exploded view of the prior art using OCA optical glue for full bonding, and Fig. 2 is a schematic view showing the state of full bonding using OCA optical glue in the prior art. As shown in FIG. 1 and FIG. 2 , an ink layer 20 is adhered to the back surface of the cover glass 10 , and an ink layer 20 is disposed at an end of the cover glass 10 and encloses the cover glass 10 to form a surrounding space 101 . When the cover glass 10 and the display module 40 are bonded together by the OCA optical adhesive layer 30, the OCA optical adhesive layer 30 needs to fill the enclosed space 101. When the thickness of the selected ink layer 20 is 30 micrometers, it is necessary to adopt The OCA optical adhesive layer 30 of 0.3 mm or more thickness can handle the bubble problem in the bonding process. Therefore, full bonding using OCA optical glue will result in an increase in the thickness of the AMOLED module.

The object of the present invention is to overcome the defects of the prior art, to provide an AMOLED module structure and an assembly method thereof, and to solve the problem of thickening of an AMOLED module from an OCA optical tape.

The technical means for achieving the above object is: an AMOLED module structure comprising a display module, an OCA optical adhesive layer, an ink layer and a cover glass disposed in sequence, the ink layer being disposed at an end of the back surface of the cover glass, Forming an enclosure space with the cover glass; the AMOLED module structure further includes an OCR water glue layer, the OCR water glue layer is filled in the enclosure space, and the OCA optical adhesive layer covers the cover glass The back side is bonded to the display module.

The OCR water gel fills the enclosing space on the cover glass, which can make the subsequent OCA optical adhesive layer thinner, only need to use 0.025 mm thick OCA optical adhesive. The cover glass and the display module are well adhered to realize the thickness thinning effect of the AMOLED module structure.

A further improvement of the structure of an AMOLED module of the present invention is that the thickness of the OCA optical adhesive is from 0.025 mm to 0.1 mm.

The method for assembling an AMOLED module structure comprises the steps of: filling the enclosing space formed between the cover glass and the ink layer disposed at the end of the cover glass with OCR water glue, so that the cover glass The back side is flat; the back side of the cover glass is bonded to the display module using OCA optical glue.

A further improvement of the assembly method of the AMOLED module structure of the present invention is that the OCA optical adhesive has a thickness of 0.025 mm to 0.1 mm.

"Knowledge Technology"

10‧‧‧ Cover glass

101‧‧‧Enclosed space

20‧‧‧Ink layer

30‧‧‧OCA optical adhesive layer

40‧‧‧Display module

"this invention"

10‧‧‧ Cover glass

20‧‧‧Ink layer

30‧‧‧OCA optical adhesive layer

40‧‧‧Display module

50‧‧‧OCR water layer

1 is an exploded view of the prior art using OCA optical glue for full bonding; FIG. 2 is a schematic view showing a state in which the OCA optical glue is fully bonded in the prior art; and FIG. 3 is a structure of an AMOLED module according to the present invention; Exploded view; Fig. 4 is a schematic view showing the structure of an AMOLED module according to the present invention.

In order to enable the review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [detailed description of the drawings] as follows: Please refer to FIG. 3, which is an AMOLED of the present invention. Modular structure Explosion map. The purpose of the invention is to solve the problem of thickening in the packaging process of the AMOLED module, because in the full bonding process, the OCA optical glue needs to fill the enclosing space formed on the cover glass, so that the OCA optical adhesive layer to be used is changed. Thick, which in turn increases the thickness of the AMOLED module. The structure of an AMOLED module of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 3 and FIG. 4, an AMOLED module structure of the present invention includes a cover glass 10, an ink layer 20, an OCR water layer 50, an OCA optical adhesive layer 30, and a display module 40.

The ink layer 20 is disposed at the end of the back surface of the cover glass 10, that is, at the peripheral edge of the back surface of the cover glass 10, and forms a space with the cover glass 10, and the OCR water layer 50 is placed on the ink layer 20 and the cover glass. The enclosed space formed between the 10 is filled with the enclosed space so that the back surface of the cover glass 10 is flat. The OCR water-filling process is completed in the same process as the cover glass 10 and the ink layer 20. The OCR water-filling operation can be completed at the manufacturer of the cover glass, and the OCR water-based glue needs to be cured by UV. The UV will have a destructive effect on the display module 40 of the AMOLED. Therefore, the above OCR water gel curing process needs to be completed first to avoid the influence of the UV on the display module 40. Next, the display module 40 is bonded to the OCR water-based layer 50 and the ink layer 20, that is, the back surface of the cover glass 10 by OCA optical glue, and the OCA optical adhesive layer 30 is formed on the display module 40 and the OCR water gel. The structure between layers 50.

By using the OCR water layer 50 to fill the enclosing space formed between the ink layer 20 and the cover glass 10, the cover glass 10 and the display module 40 can be fully bonded, and the ultra-thin OCA optical glue is used. can. Since the back surface of the cover glass 10 has been flattened, there is no bubble problem when bonded with OCA optical glue, so the OCA optical glue can be made the thinnest. In contrast, in the prior art, if the OCA optical glue is used for direct fitting, When filling the enclosed space on the back surface of the cover glass 10, bubbles will be generated due to the gap, which will affect the adhesion of the AMOLED module structure. Therefore, in order to eliminate the generated bubbles, it is necessary to apply a thick OCA optical adhesive. . When the thickness of the ink layer 20 is 0.03 mm, at least 0.3 mm thick OCA optical glue is required.

The thickness of the enclosed space formed between the ink layer 20 and the cover glass 10 is 0.03 mm, that is, the thickness of the ink layer 20. The OCR water gel is used to fill the enclosed space, and the thickness of the OCR water layer 50 formed by curing the OCR water gel is also 0.03 mm. Then, the cover glass 10 and the display module 40 can be bonded together by using an OCA optical glue having a thickness of 0.025 mm. Compared with the prior art, at least 0.3 mm thick OCA optical glue is required, the total thickness used in the present invention is the sum of the thicknesses of the OCR water subbing layer 50 and the OCA optical adhesive layer 30, that is, 0.055 mm, compared with the prior art. The total thickness of the AMOLED module can be reduced by 0.245 mm.

The OCA optical adhesive may have a thickness of 0.025 mm to 0.1 mm and a minimum thickness of 0.025 mm.

The following is an explanation of the assembly method of the AMOLED module structure of the present invention. First, the enclosing space formed between the cover glass 10 and the ink layer 20 disposed at the end of the cover glass 10 is filled with OCR water glue, so that the The back side of the cover glass is flat. In the present embodiment, the ink layer 20 is disposed at the end of the back surface of the cover glass 10, that is, at the peripheral edge of the back surface of the cover glass 10, and forms an enclosed space with the cover glass 10. Here, the thickness of the ink layer 20 determines the thickness of the enclosed space. In practical applications, the filling process of the OCR water gel comprises: filling the OCR water gel in the enclosure space; curing the OCR water gel with UV to form an OCR water glue layer 50, the OCR water glue layer 50 and the cover Oil on the back of the plate glass 10 The ink layer 20 is flush so that the back surface of the cover glass 10 is flat. The above steps can be performed at the manufacturer of the cover glass.

Then, the back surface of the cover glass 10 is bonded to the display module 40 by OCA optical glue.

This completes the full-fit package of the AMOLED module structure. By using the OCR water gel to fill the enclosing space formed between the ink layer 20 and the cover glass 10, the cover glass 10 and the display module 40 can be fully bonded, and the ultra-thin OCA optical glue can be used. The total thickness of the AMOLED module is effectively reduced. Since the OCR water gel is cured by UV curing before the display module is installed, the damaging effect of the UV on the display module can be avoided.

The invention has the beneficial effects that the OCR water glue is used to fill the enclosing space on the cover glass, which can effectively reduce the total thickness of the AMOLED module and improve the competitiveness of the product.

Then, the OCR water gel is first cured on the cover glass by UV, and then the display module is attached, which can avoid the characteristic of the display module in the AMOLED being sensitive to UV light, and avoiding the display module caused by the UV light. The phenomenon of failure of luminescent materials. Furthermore, the manufacturer of the OCR water gel can be transferred to the cover glass to reduce the input cost of the OCR curing equipment.

The present invention has been described in detail above with reference to the embodiments of the drawings, and various modifications of the invention can be made by those skilled in the art in light of the above description. Therefore, some of the details of the embodiments should not be construed as limiting the scope of the invention, which is defined by the scope of the appended claims.

10‧‧‧ Cover glass

20‧‧‧Ink layer

30‧‧‧OCA optical adhesive layer

40‧‧‧Display module

50‧‧‧OCR water layer

Claims (5)

An AMOLED module structure comprises a display module arranged in sequence, an OCA optical adhesive layer, an ink layer and a cover glass. The ink layer is disposed at an end of the back surface of the cover glass, and is surrounded by the cover glass to form a circumference. The space of the AMOLED module further includes an OCR water layer, the OCR water layer is filled in the enclosure space, and the back surface of the cover glass and the display module are formed by the OCA optical adhesive layer. Bonded together. An AMOLED module structure according to claim 1, wherein the OCA optical adhesive has a thickness of 0.025 mm to 0.1 mm. A method for assembling an AMOLED module structure, the method comprising the steps of: filling an enclosing space formed between a cover glass and an ink layer disposed at an end of the cover glass with OCR water glue, so that the cover glass The back side is flat; the back side of the cover glass is bonded to the display module using OCA optical glue. The method for assembling an AMOLED module structure according to claim 3, wherein the OCR water gel is filled in the enclosure space and then cured by UV to form an OCR water gel layer. The method for assembling an AMOLED module structure according to claim 3, wherein the OCA optical adhesive has a thickness of 0.025 mm to 0.1 mm.