TWI675362B - Display device, assembly method, judging method of assembly accuracy and cover element - Google Patents

Abstract

The present invention provides a display device, comprising: a cover plate; a display panel, wherein the display panel and the cover plate are stacked; a first ink layer, the first ink layer is provided with at least one set of openings, and each set of openings The display panel includes a first opening and a second opening that are disposed at a distance from each other. The display panel defines a plurality of sub-pixels, and the sub-pixels include at least one sub-pixel overlapping the first ink layer. Pixels; at least one sub-pixel overlapping the first ink layer is a counter-pixel, and each counter-pixel is located between a first opening and a second opening of a group of openings. The electronic device of the present invention includes a counter pixel and an opening corresponding to the counter pixel, and it is easy to determine whether the deflection angle of the component in the electronic device meets the requirements.

Description

Display device, assembling method, assembling judgment method and cover element

The invention relates to a display device, an assembling method, a method for judging an assembling accuracy, and a cover element.

In the conventional electronic device, a display device is taken as an example. With the rise of wearable devices, the rectangular shape in the past cannot meet the needs of users. The wearable device may need to be equipped with a non-rectangular display screen, such as a circular display screen, a regular triangular display screen, a regular pentagonal display screen, a regular hexagonal display screen, and the like. Generally speaking, during the manufacturing process of a display device, different components need to be aligned and assembled, and the alignment between different components (especially for non-rectangular components) may have a certain positional deviation. In order to screen out the components, For display devices whose deviations are within a specified range, a measuring instrument is usually used to measure the deviations between the components, and then to determine whether the display device meets the requirements. However, using a measuring instrument to measure the display devices one by one not only consumes a lot of manpower, but because of the limited number of measuring instruments, it is not possible to quickly perform screening.

In view of this, it is necessary to provide an electronic device whose assembly process can easily determine whether the alignment is correct.

A display device includes: a transparent cover plate; a display panel; the display panel and the cover plate are stacked; a first ink layer, and the first ink layer partially covers a side of the cover plate facing the display panel; ; The first ink layer is provided with at least one set of openings, each set of openings includes a first opening and a second opening arranged through the first ink layer and spaced from each other; the display panel defines a plurality of sub pixels, The sub-pixel includes at least one sub-pixel overlapping with the first ink layer; at least one of the sub-pixels overlapping with the first ink layer is a para-pixel, and each para-pixel is located at a Between the first opening and the second opening of the group opening.

The invention also provides a cover element.

A cover plate element includes: a cover plate; a first ink layer partially covering one side of the cover plate; the first ink layer is provided with first openings penetrating the first ink layer and spaced from each other and The second opening, the first opening and the second opening are both filled with fluorescent ink.

The invention also provides a method for assembling a display device, which includes: providing a transparent cover plate, the cover plate is provided with a first ink layer, and the first ink layer partially covers one side of the cover plate; The first ink layer is provided with a first opening and a second opening arranged at a distance from each other.

A display panel is provided. The display panel has a plurality of sub-pixels, wherein the plurality of sub-pixels includes at least one sub-pixel. The display panel and the cover plate are assembled so that the display panel and the cover plate are assembled. The plates are stacked; determine whether the deflection angle between the cover plate and the display panel is greater than θ. When the deflection angle is greater than θ, it means that the alignment of the cover plate and the display panel is inaccurate; When it is larger than θ, the following steps are performed: lighting the counter pixel; When light is emitted from the opening, the counter pixel and the first opening or the second opening overlap, and the deflection angle between the cover plate and the display panel is θ, it means that the cover plate and the The alignment of the display panel is inaccurate; when no light is emitted from the opening, the alignment pixels do not overlap with the first opening or the second opening, and the deflection between the cover plate and the display panel If the angle is smaller than θ, it means that the cover plate and the display panel are correctly aligned.

Compared with the conventional technology, the electronic device of the present invention includes a counter pixel and an opening corresponding to the counter pixel. It is easy to determine whether the deflection angle of the component in the electronic device meets the requirements, avoiding the measurement process, and simplifying the screening process.

100‧‧‧ display device

1‧‧‧ cover

101‧‧‧Viewable Area

102‧‧‧Peripheral area

110‧‧‧ surface

2‧‧‧display panel

3‧‧‧first ink layer

31‧‧‧ opening

311‧‧‧first opening

312‧‧‧Second Opening

4‧‧‧Second ink layer

5‧‧‧ fluorescent ink

7‧‧‧ pixel array

71‧‧‧ first sub pixel

72‧‧‧ second sub-pixel

73‧‧‧ third sub pixel

701‧‧‧ counter pixel

FIG. 1 is a schematic three-dimensional structure diagram of an electronic device according to an embodiment of the invention.

FIG. 2 is a schematic plan view of a cover plate according to an embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 1.

FIG. 4 is a schematic plan view of a display panel according to an embodiment of the present invention.

FIG. 5 is a schematic plan view of a display panel according to another embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view taken along the line VI-VI in FIG. 5.

FIG. 7 is a flowchart of an assembling method of a display device according to an embodiment of the present invention.

The drawings show embodiments of the present invention, and the present invention may be implemented in many different forms, and should not be construed as being limited to the embodiments set forth herein. Instead, these examples are provided for To make the present invention more comprehensive and complete disclosure, and to enable those skilled in the art to more fully understand the scope of the present invention.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, regions, layers and / or sections, such elements, regions, layers and / or sections should not be limited to these terms. These terms are only used to distinguish one element, region, layer and / or part from another element, region, layer and / or part. Accordingly, a first element, region, layer, and / or section discussed below can be termed a second element, region, layer, and / or section without departing from the teachings of the present invention.

Embodiments of the present invention are described here with reference to cross-sectional views, which are schematic diagrams of idealized embodiments (and intermediate structures) of the present invention. Thus, variations in the shapes of the illustrations as a result of manufacturing processes and / or tolerances are to be expected. Therefore, the embodiments of the present invention should not be interpreted as being limited to the specific shape of the region illustrated here, but should include deviations in the shape due to, for example, manufacturing. The regions shown in the figures are only schematic, and their shapes are not intended to illustrate the actual shape of the device and are not intended to limit the scope of the invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in the general dictionary should be interpreted to have meanings consistent with their meaning in the context of the relevant field, and should not be interpreted in an over-ideal or over-formal meaning Unless explicitly defined in this article.

Please refer to FIG. 1, which is a schematic diagram of a three-dimensional structure of a display device 100 according to an embodiment of the present invention. In this embodiment, the display device 100 is a wearable display device, but it is not limited thereto. In other embodiments, the display device 100 may be another display device.

In this embodiment, the display device 100 is a smart watch. The display device 100 includes a cover plate 1 and a display panel 2 which are arranged in a stack. The cover plate 1 can be used to protect other components inside the display device 100. The cover plate 1 is transparent, which may be a suitable transparent material such as glass or plastic. The display panel 2 may be a liquid crystal The display panel or the organic light-emitting display panel is not limited to this. In this embodiment, the material of the cover plate 1 or the type of the display panel 2 is not limited. The cover plate 1 defines a viewing area 101 and a peripheral area 102.

In this embodiment, the cover plate 1 and the display panel 2 are both circular, but it is not limited to this. In other embodiments, the cover plate 1 and the display panel 2 can be set to other shapes, such as oval or other shapes, as needed. Polygon.

Please refer to FIG. 2, which is a schematic plan view of a cover plate 1 according to an embodiment of the present invention. At least one ink layer is printed on one side of the cover plate 1. In this embodiment, a first ink layer 3 and a second ink layer 4 are printed on the cover plate 1.

In this embodiment, the first ink layer 3 is used as the background color of the peripheral region 102 of the cover plate 1. The first ink layer 3 has a plurality of sets of openings 31 penetrating through its thickness direction. In this embodiment, each group of openings 31 is filled with a fluorescent ink 5, and the fluorescent ink 5 can emit light after being excited by light of a specific wavelength. In other embodiments, each group of openings 31 may be directly hollowed out without being filled with the fluorescent ink 5. In another embodiment, each group of openings 31 may be filled with a light-transmitting material.

In this embodiment, the first ink layer 3 directly covers the cover plate 1. The first ink layer 3 may be provided with four groups of openings 31, and each group of openings 31 includes a first opening 311 and a second opening 312 disposed at a distance from each other. The second ink layer 4 covers the side of the first ink layer 3 away from the cover plate 1, avoids the opening 31, and does not cover the area where the opening 31 is located.

In an embodiment, other elements may be included between the first ink layer 3 and the cover plate 1, for example, a transparent adhesive layer may be provided between the first ink layer 3 and the cover plate 1 as long as the first ink layer 3 and The elements between the cover plates 1 do not affect the light transmission of the openings 31.

As shown in FIG. 2, in this embodiment, the peripheral area 102 is an area covered by the ink layer; the visible area 101 is an area not covered by the ink layer. The viewing area 101 is circular, and the peripheral area 102 is a ring surrounding the viewing area 101, but it is not limited thereto. The shapes of the viewing area 101 and the surrounding area 102 are not limited, and may be set to other shapes as required. The first ink layer 3 serves as the background color of the peripheral region 102 of the cover plate 1.

In an embodiment, the viewable area 101 may also be used to implement other functions, such as being used as a region for receiving touch sensing operations in a display device having a touch sensing function. In one embodiment, the viewable area 101 can be used as a region for displaying a display screen of the display panel 2 and a region for receiving a touch sensing operation in a display device having both a display function and a touch sensing function.

As shown in FIG. 2, in this embodiment, the first ink layer 3 and the second ink layer 4 are both annular. The outer edges of the first ink layer 3 and the second ink layer 4 far from the visible area 101 are aligned, and the outer edges of the first ink layer 3 and the second ink layer 4 are not aligned. The coverage area of the second ink layer 4 on the cover plate 1 is smaller than that of the first ink layer 3.

Please refer to FIG. 3, which is a schematic cross-sectional view taken along line III-III of FIG. 1. In this embodiment, the first ink layer 3 and the second ink layer 4 partially cover the surface 110 of the cover plate 1. The surface 110 is a surface which is not exposed and is not in contact with the outside when the cover plate 1 is used. During use, the ink layer can be observed through the cover plate 1. The number of ink layers is not limited, and the peripheral region 102 of the cover plate 1 may be printed with only one ink layer or three or more ink layers according to actual needs.

Please refer to FIG. 4, which is a schematic plan view of a display panel 2 according to an embodiment of the present invention. In order to clearly reflect the positional relationship between the cover plate 1 and the display panel 2, the outer edge of the first ink layer 3 near the viewing area 101 and the opening 31 are shown in dotted lines in FIG. 4. In this embodiment, the display panel 2 is an organic light-emitting electroluminescent (OLED) display panel. The display panel 2 defines a pixel array 7. The pixel array 7 includes a plurality of sub-pixels. In this embodiment, the pixel array 7 defines a first sub-pixel 71, a second sub-pixel 72, and a third sub-pixel 73 arranged in a complex array. The sub-pixels are set not only in the visible area 101 but also in the peripheral area 102.

In this embodiment, the first sub-pixel 71 is a blue sub-pixel (B), the second sub-pixel 72 is a red sub-pixel (R), and the third sub-pixel 73 is a green sub-pixel (G ). The first sub-pixels 71 are arranged in a first direction (X direction in the figure) to form a plurality of rows, and are arranged in a second direction (Y direction in the figure) to form a plurality of columns. The first direction intersects the second direction. In this embodiment, , The first direction and the second direction are orthogonal. First The two sub-pixels 72 are arranged in the X direction in the figure to form a plurality of rows, and the two sub-pixels 72 are arranged in the Y direction in the figure to form a plurality of columns. The third sub-pixels 73 are arranged in the X direction in the figure to form a plurality of rows, and the third sub-pixels 73 are arranged in the Y direction in the figure to form a plurality of columns.

The first sub-pixel 71 and the second sub-pixel 72 are alternately arranged in the same column. Between every two adjacent columns in which the first sub-pixel 71 and the second sub-pixel 72 are arranged, there is a column in which the third sub-pixel 73 is arranged. Each adjacent first sub-pixel 71, a second sub-pixel 72, and a third sub-pixel 73 constitute one pixel unit of the display panel 2. In this embodiment, the pixel array 7 in FIG. 4 is used as an exemplary description. The present invention does not limit the arrangement of the pixel array 7, and the arrangement of the pixel array 7 is not limited to that shown in FIG. 4. The arrangement methods shown can also be other arrangements, which are not listed here.

As shown in FIG. 4, the display panel 2 shown in FIG. 4 is aligned and assembled with the cover plate 1. In actual alignment assembly, there may be a certain alignment tolerance in the positional relationship between the display panel 2 and the cover plate 1. In the pixel array 7, at least one sub-pixel located in the peripheral region 102 and overlapping with the first ink layer 3 is defined as a counter sub-pixel 701. It is defined that a specified point in the display panel 2 is taken as the center of rotation (for example, its center point). Compared with the cover plate 1, the display panel 2 allows a deflection angle smaller than θ.

As shown in FIG. 4, when the counter pixel 701 is located in the middle of the corresponding first opening 311 and the second opening 312, the deflection angle is zero. After the display panel 2 is rotated counterclockwise by an angle θ in a direction parallel to the cover plate 1, the rotated position of the first opening 311 and the counter pixel 701 overlaps in the direction of the cover plate 1, and the display panel 2 is parallel to the cover plate. After being rotated clockwise by θ in the direction of 1, the position of the second opening 312 and the counter pixel 701 after rotation is overlapped in the direction of the cover plate 1.

In this embodiment, the alignment pixel 701 and the opening 31 are used to determine whether the display panel 2 and the cover 1 are accurately aligned when the display device 100 is assembled. When the alignment pixel 701 and the opening 31 do not overlap, the display panel is 2 is accurately aligned with the cover plate 1; when the alignment pixel 701 overlaps with the opening 31, the display panel 2 and the cover plate 1 are inaccurately aligned.

In this embodiment, a row in which a first sub-pixel 71 is arranged in the middle along the X direction in FIG. 4 is defined as a counter pixel row; a first sub-pixel is arranged in the middle along the Y direction in FIG. 4. The column of the pixel 71 is a counter pixel row, and the counter pixel row 703 and the counter pixel row 704 intersect. In one embodiment, any one of the rows arranged along the X-axis direction in FIG. 4 may be defined as the counter pixel row 703; and any one of the rows arranged along the Y direction in FIG. 4 is used as the counter pixel row 704. In this embodiment, the display panel 2 is circular, and the intersection of the counter pixel row 703 and the counter pixel row 704 is the center of the circle of the display panel 2.

In this embodiment, the counter pixel line 703 includes at least one first sub pixel 71 that will be covered by the first ink layer 3 after the display panel 2 is attached to the cover plate 1, and is defined as a counter pixel 701. The counter pixel row 704 includes at least one first sub pixel 71 that will be covered by the first ink layer 3 after the display panel 2 is attached to the cover plate 1, and is defined as a counter pixel 701. The counter pixel 701 overlaps the first ink layer 3 at least partially in a direction perpendicular to the cover plate 1.

In this embodiment, each pair of pixel sub-pixel rows includes two pixel sub-pixels 701 respectively located at two ends of the pixel sub-pixel row, and each pair of pixel sub-pixels includes two sub-pixels positioned at two ends of the pixel sub-pixels. The pixel 701 corresponds to a group of openings 31 in each counter pixel 701. However, it is not limited to this, and the number of counter pixels is not limited. In other embodiments, the display panel 2 may have only one sub-pixel 701.

Please refer to FIG. 3 and FIG. 4 together, and define that the alignment pixel 701 allows the deflection angle of the display panel 2 as the rotation center during the assembling process of the display panel 2 and the cover plate 1 to be less than θ. The position pixel 701 is rotated counterclockwise by an angle of θ with the center of the circle of the display panel 2 as the rotation center, and overlaps with the first opening 311 in the direction of the cover plate 1. The position pixel 701 overlaps the second opening 312 in the direction of the cover plate 1 by rotating the position of the display panel 2 with the circle center of the display panel 2 clockwise as the angle of θ. In this embodiment, θ is 1 °. In one embodiment, 0 ° <θ <2 °. In other embodiments, 0 ° <θ <30 °.

In this embodiment, the fluorescent ink 5 is a material that is excited by blue light to emit light. Please refer to FIG. 5 and FIG. 6 together. After the cover 1 and the display panel 2 are aligned with each other, when the registration pixel 701 and the first opening 311 overlap in the direction of the cover 1, the alignment of the registration pixel 701 The emitted light will excite the fluorescent ink 5 filled in the first opening 311 and cause the fluorescent ink 5 to emit light. Since blue light has a shorter wavelength and stronger energy than red or green light, in this embodiment, the fluorescent ink 5 can only be excited by blue light, and will not be emitted by the second sub-pixel 72 or the green light. The three-pixel pixel 73 is excited. In other embodiments, the second sub-pixel 72 may be defined as a counter-pixel, and a material excited by red light is used as the fluorescent ink 5; or the third sub-pixel 73 is defined as a counter-pixel, and As the fluorescent ink 5, a material excited by green light is used.

During the manufacturing process in the display device 100, when the cover plate 1 and the display panel 2 are assembled with each other, there may be an alignment error between the cover plate 1 and the display panel 2. After the alignment of the cover plate 1 and the display panel 2 is completed, it is necessary to determine whether the deflection angle between the cover plate 1 and the display panel 2 due to an alignment error meets the requirements.

When the deflection angle between the cover plate 1 and the display panel 2 is smaller than θ, the display device 100 meets the assembly specifications. When the deviation angle between the cover plate 1 and the display panel 2 is larger than θ, the display device 100 does not meet the assembly specifications. In an embodiment, when the deviation angle between the cover plate 1 and the display panel 2 is not greater than θ, the first sub-pixel 71 in the counter pixel row 703 and the counter pixel row 704 is lit to determine the fluorescent ink. 5 Whether to emit light.

As shown in FIGS. 5 and 6, if the fluorescent ink 5 emits light, the projection of the registration pixel 701 and the opening 31 in the direction of the cover plate 1 overlaps, and the deflection angle between the cover plate 1 and the display panel 2 at this time. Is θ; as shown in FIG. 2 and FIG. 4, if the fluorescent ink 5 does not emit light, the counter pixel 701 is located between the corresponding first opening 311 and the second opening 312. At this time, the cover plate 1 and the display panel The deflection angle between 2 is smaller than θ.

For the display device 100 with a deflection angle between the cover plate 1 and the display panel 2 smaller than θ, since the opening 31 and the projection of the first sub-pixel 71 in the direction of the cover plate 1 do not overlap, the fluorescent ink 5 does not Will be excited by the light emitted by the first sub-pixel 71.

In other embodiments, the fluorescent ink 5 may not be filled in the opening 31, and may be directly hollowed out or filled with other light-transmitting materials. When the light emitted from the counter pixel 701 passes through the opening 31, the projections of the counter pixel 701 and the opening 31 in the direction of the cover plate 1 overlap, and the deflection angle between the cover plate 1 and the display panel 2 is θ. When the light emitted by the counter pixel 701 does not pass through the opening 31, the counter pixel 701 is located between the corresponding first opening 311 and the second opening 312, and the deflection angle between the cover plate 1 and the display panel 2 Less than θ.

In this embodiment, the alignment assembly between the cover plate 1 and the display panel 2 of the display device 100 is described as an example, but it is not limited to this. In other embodiments, the alignment between components of other electronic devices may be performed. Bit assembly.

In an embodiment, an electronic device may include a first element and a second element. The second element is stacked with the first element, and the first ink layer partially covers one side of the first element. The first ink layer is provided with at least one A group of openings, each group of openings including a first opening and a second opening spaced through each other through the first ink layer; the openings may be filled with fluorescent ink, and the second element defines at least one in a direction perpendicular to the first element When the light-emitting unit and the opening overlap with each other in the direction perpendicular to the first element, the fluorescent ink in the opening can be excited to make the fluorescent ink emit light, thereby judging the first element and the first element. The positional relationship between the two components.

Please refer to FIG. 7, which is a flowchart of an assembling method of a display device according to an embodiment of the present invention. A method for assembling a display device according to an embodiment of the present invention includes: Step 1: providing a transparent cover plate 1, a first ink layer 3 is disposed on one side of the cover plate 1, and the first ink layer 3 partially covers the cover plate 1; An ink layer 3 is provided with at least one set of openings 31, and each set of openings 31 includes a first opening 311 and a second opening 312 spaced from each other. Step 2: providing a display panel 2 having a plurality of sub-pixels, The plurality of sub-pixels includes at least one counter-sub-pixel 701. Step three: assemble the display panel 2 and the cover plate 1 so that the display panel 2 and the cover plate 1 are stacked; Step 4: Determine whether the deflection angle between the cover plate 1 and the display panel 2 is greater than θ. When the deflection angle between the cover plate 1 and the display panel 2 is greater than θ, it means that the alignment between the cover plate and the display panel is not equal. accurate.

In this embodiment, θ = 1 °.

When the deflection angle is not greater than θ, the following steps are performed: Step 5: the registration pixel 701 of the display panel 2 is lighted.

In this embodiment, the first sub-pixel row 703 and the first sub-pixel 71 in the second sub-pixel row 704 of the display panel 2 can be lighted, thereby avoiding the operation difficulty of lighting a single sub-pixel 701.

Step 6: Determine whether light is emitted from the opening 31. When the counter pixel and the opening overlap in a direction perpendicular to the cover plate, light is emitted from the opening 31, and the deflection angle between the cover plate 1 and the display panel 2 is θ, which indicates that the cover plate and the display panel The alignment is inaccurate; when the alignment pixel is located between a group of the first opening and the second opening, no light is emitted from the opening 31, and the deflection angle between the cover plate 1 and the display panel 2 is less than θ, indicating that The cover plate is accurately aligned with the display panel.

In this embodiment, a fluorescent ink 5 may be provided in the opening 31. When the counter pixel and the opening overlap in a direction perpendicular to the cover plate, the fluorescent ink emits light, indicating that the cover plate and the display The panel alignment is inaccurate; when the counter pixel is located between the first opening 311 and the second opening 312, the fluorescent ink does not emit light, which means that the cover is correctly aligned with the display panel.

As shown in FIGS. 5 and 6, in this embodiment, if the fluorescent ink emits light, it can be determined that the deflection angle between the cover plate 1 and the display panel 2 is θ at this time, and the alignment of the display panel and the cover plate is inaccurate. As shown in FIG. 3 and FIG. 4, in this embodiment, if the fluorescent ink does not emit light, it can be determined that the deflection angle between the cover plate 1 and the display panel 2 is less than θ at this time, and the display panel and the cover plate are aligned. accurate.

The above embodiments are only used to illustrate the technical solution of the present invention, but not limited. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or equivalently replaced, and Without departing from the spirit and scope of the technical solution of the present invention.

Claims (8)

A display device, the improvement of which includes: a transparent cover plate; a display panel having a plurality of sub-pixels, the display panel and the cover plate being stacked; and a first ink layer having a first opening and a second opening , The first opening and the second opening are filled with fluorescent ink or light-transmitting material, the first ink layer partially covers the side of the cover plate facing the display panel; wherein the plural sub-pixels Containing a sub-pixel that overlaps with the first ink layer, the sub-pixel is located between the first opening and the second opening. The display device according to claim 1, wherein the para-pixel is a blue sub-pixel, and the fluorescent ink is a material excited by blue light. The display device according to claim 1, wherein: the display device defines a display area and a peripheral area surrounding the display area, the first ink layer is located in the peripheral area; the plural sub-pixels include The sub-pixels in the display area and the counter-pixels in the surrounding area. The display device according to claim 1, wherein the plurality of sub-pixels are arranged in a first direction to form a plurality of rows, and are arranged in a second direction to form a plurality of columns, and the alignment sub-pixel includes at least two alignment sub-picture Pixels, the at least two pairs of sub-pixels are located in different rows and different columns. A cover plate element, comprising: a cover plate; a first ink layer partially covering one side of the cover plate; the first ink layer is provided with a first opening and a second opening spaced apart from each other, the Both the first opening and the second opening are filled with fluorescent ink. A method for assembling a display device includes: providing a transparent cover plate, a first ink layer is provided on one side of the cover plate, the first ink layer partially covers the cover plate; the first ink layer A first opening and a second opening spaced apart from each other are provided; a display panel is provided, the display panel having a plurality of sub-pixels, the plurality of sub-pixels including counter-pixels; the display panel and the cover are assembled Panel, the display panel and the cover panel are stacked; determine whether the deflection angle between the cover panel and the display panel is greater than θ, when the deflection angle is greater than θ, it means that the cover panel and the display Panel alignment is inaccurate; when the deflection angle is not greater than θ, then perform the following steps: light up the alignment sub-pixel; when light is emitted from the opening, the alignment sub-pixel and the first opening Or the second openings overlap, and the deflection angle between the cover plate and the display panel is θ, indicating that the alignment of the cover plate and the display panel is inaccurate; when no light is emitted from the opening, the Alignment pixels and location The first openings or the second openings do not overlap, the deflection angle between the cover plate and the display panel is smaller than [theta], it indicates that the display panel to cover the bit accuracy. The method for assembling the display device according to claim 6, wherein: the first opening and the second opening are filled with fluorescent ink; after the alignment pixel is lit, when the alignment pixel When overlapping with the first opening or the second opening, the fluorescent ink emits light; when the alignment pixel does not overlap with the first opening or the second opening, the fluorescent ink Does not shine. The method for assembling a display device according to claim 6, wherein: the plurality of sub-pixels are arranged in a first direction to form a plurality of rows, and the second sub-pixels are arranged to form a plurality of columns. It includes lighting the row where the alignment pixels are located or the column where the alignment pixels are located.