KR-102964102-B1 - METHOD FOR MANUFACTURING DISPLAY DEVICE AND APPARATUS FOR MANUFACTURING DISPLAY DEVICE

KR102964102B1KR 102964102 B1KR102964102 B1KR 102964102B1KR-102964102-B1

Abstract

A method for manufacturing a display device according to one embodiment for solving a problem comprises the steps of: providing a display device including a display panel including a first alignment mark and a first circuit board including a second alignment mark on one end of the display panel; placing the display device on a stage including a base mark; detecting the first alignment mark and the base mark and setting the base mark as a reference mark by considering the relative positional relationship between the first alignment mark and the base mark; and detecting the base mark and the second alignment mark and determining the bending alignment degree of the display device by determining the positional relationship between the base mark and the second alignment mark.

Inventors

김동우
박종훈
최명길

Assignees

삼성디스플레이 주식회사

Dates

Publication Date: 20260513
Application Date: 20211208

Claims (20)

A step of providing a display device comprising a display panel including a first alignment mark and a first circuit board including a second alignment mark on one end of the display panel; A step of placing the display device on a stage including a base mark; A step of detecting the first alignment mark and the base mark and setting the base mark as a reference mark by considering the relative positional relationship between the first alignment mark and the base mark; and The method includes the step of detecting the base mark and the second alignment mark, determining the positional relationship between the base mark and the second alignment mark, and determining the bending alignment degree of the display device; A method for manufacturing a display device in which the first alignment mark overlaps with the first circuit board in the thickness direction of the display device when the display device is bent.
In Article 1, A method for manufacturing a display device comprising the steps of: providing the above display device, placing a first circuit board including a second alignment mark on one end of the display panel including the first alignment mark, determining whether the first circuit board and the display panel are aligned by determining the positional relationship between the first alignment mark and the second alignment mark, and attaching the first circuit board to the one end of the display panel.
In Article 2, The step of determining the bending alignment degree of the above-mentioned display device A method for manufacturing a display device comprising the step of first aligning the display device by adjusting the relative position and angle between the display device and the bending part using position data of the base mark and the second alignment mark before bending the display device.
In Article 2, A method for manufacturing a display device comprising the step of determining the bending alignment degree of the above display device, wherein the bending part bends the first circuit board.
In Paragraph 4, The step of determining the bending alignment degree of the above-mentioned display device is, A method for manufacturing a display device, further comprising the step of secondarily aligning the display device by adjusting the relative position of the display panel and the first circuit board bent using position data of the base mark and the second alignment mark after bending the display device.
In Article 5, The step of determining the bending alignment degree of the above-mentioned display device is, A method for manufacturing a display device, further comprising the step of comparing the position data of the base mark and the second alignment mark with the setting data after bending the display device, and determining whether the difference between the position data and the setting data satisfies an error range that determines whether the difference is less than or equal to a reference value.
In Paragraph 4, The step of determining the bending alignment degree of the above-mentioned display device is, A method for manufacturing a display device, further comprising an attachment step of attaching the first circuit board, on which an adhesive is disposed at the end portion of the bending portion, to the other side of the display panel by pressing the first circuit board in the direction of the display panel.
A step of providing a display device comprising a display panel including a first alignment mark and a first circuit board including a second alignment mark on one end of the display panel; A step of placing the above-mentioned display device on a stage; A step of setting a point identical to the first alignment mark on the shooting range of the position detection unit that photographs the display device and the stage as a base mark; A step of detecting the first alignment mark and setting the base mark as a reference mark by considering the relative positional relationship between the first alignment mark and the base mark; and The method includes the step of detecting the base mark and the second alignment mark, determining the positional relationship between the base mark and the second alignment mark, and determining the bending alignment degree of the display device; A method for manufacturing a display device in which the first alignment mark overlaps with the first circuit board in the thickness direction of the display device when the display device is bent.
In Article 8, The step of providing the above-mentioned display device A step of placing a first circuit board including a second alignment mark on one end of a display panel including the first alignment mark, and determining whether the first circuit board and the display panel are aligned by determining the positional relationship between the first alignment mark and the second alignment mark. A method for manufacturing a display device comprising the step of attaching the first circuit board to one end of the display panel.
In Article 9, The step of determining the bending alignment degree of the above-mentioned display device A method for manufacturing a display device comprising the step of first aligning the display device by adjusting the relative position and angle between the display device and the bending part using position data of the base mark and the second alignment mark before bending the display device.
In Article 10, The step of determining the bending alignment degree of the above-mentioned display device The step of the bending part bending the first circuit board, A step of secondarily aligning the display device by adjusting the relative position between the display panel and the bent first circuit board using position data of the base mark and the second alignment mark after bending the display device, and A method for manufacturing a display device, further comprising the step of comparing the position data of the base mark and the second alignment mark with the setting data after bending the display device, and determining whether the difference between the position data and the setting data satisfies an error range that determines whether the difference is less than or equal to a reference value.
A step of providing a display device comprising a display panel including a first alignment mark and a first circuit board including a second alignment mark on one end of the display panel; A step of placing the above-mentioned display device on a stage; A step of setting the shooting range of a position detection unit so that all edges of the other side of the display panel are detected, and setting a point identical to the vertex of the other side of the display panel on the shooting range of the position detection unit as a base mark; A step of detecting the first alignment mark and setting the base mark as a reference mark by considering the relative positional relationship between the first alignment mark and the base mark; The method includes the step of detecting the base mark and the second alignment mark, determining the positional relationship between the base mark and the second alignment mark, and determining the bending alignment degree of the display device; A method for manufacturing a display device in which the first alignment mark overlaps with the first circuit board in the thickness direction of the display device when the display device is bent.
In Article 12, The step of providing the above-mentioned display device A method for manufacturing a display device comprising the steps of: placing a first circuit board including a second alignment mark on one end of a display panel including the first alignment mark; determining whether the first circuit board and the display panel are aligned by determining the positional relationship between the first alignment mark and the second alignment mark; and attaching the first circuit board to the one end of the display panel.
In Article 13, The step of determining the bending alignment degree of the above-mentioned display device A method for manufacturing a display device comprising the step of first aligning the display device by adjusting the relative position and angle between the display device and the bending part using position data of the base mark and the second alignment mark before bending the display device.
In Article 14, The step of determining the bending alignment degree of the above-mentioned display device The step of the bending part bending the first circuit board, A step of secondarily aligning the display device by adjusting the relative position between the display panel and the bent first circuit board using position data of the base mark and the second alignment mark after bending the display device, and A method for manufacturing a display device, further comprising the step of comparing the position data of the base mark and the second alignment mark with the setting data after bending the display device, and determining whether the difference between the position data and the setting data satisfies an error range that determines whether the difference is less than or equal to a reference value.
A stage comprising a base mark, wherein a display device comprising a display panel comprising a first alignment mark and a first circuit board comprising a second alignment mark is disposed on one end of the display panel; A stage driving unit that drives the movement of the above stage; A bending part for bending the display device placed on the above stage; A position sensing unit disposed on the upper part of the above stage and configured to detect the positions of the first alignment mark, the second alignment mark and the base mark; and A control unit that determines whether the display device is aligned based on position data detected by the position detection unit; comprising, The above position data includes first position data between the first alignment mark and the base mark and second position data between the second alignment mark and the base mark, and The above control unit includes a memory unit comprising first reference data and second reference data, and It includes a comparison unit that determines the degree of alignment of the display device with respect to the bending part by comparing the first position data and the first reference data, and determines the degree of bending alignment of the bent display device by comparing the second position data and the second reference data. The above first alignment mark is a manufacturing device for a display device that overlaps with the first circuit board in the thickness direction of the display device when the display device is bent.
In Article 16, A manufacturing apparatus for a display device, wherein the comparison unit generates error data corresponding to the difference from the reference range and provides it to the stage driving unit when the alignment alignment of the display device deviates from the reference range, and the stage driving unit drives the movement of the stage so that the alignment alignment of the display device with respect to the bending unit is located within the reference range based on the error data.
In Article 17, The movement of the above stage is a manufacturing device for a display device that includes rotational movement.
In Article 17, The above position sensing unit is a manufacturing device for a display device comprising a stage and a shooting unit that photographs an object placed on the stage.
In Article 18, The above position sensing unit further comprises an image analysis unit that analyzes image data acquired from a shooting unit to generate position data of a second alignment mark and a base mark and/or a first alignment mark.

Description

Method for manufacturing display device and apparatus for manufacturing display device Embodiments of the present invention relate to methods and apparatus, and more specifically, to a method for manufacturing a display device and an apparatus for manufacturing a display device. Mobile-based electronic devices are being widely used. In addition to small electronic devices such as mobile phones, tablet PCs have recently become widely used as mobile electronic devices. Such portable electronic devices include a display device to support various functions and to provide visual information, such as images or videos, to the user. Recently, as other components for driving the display device have become miniaturized, the proportion of the display device within the electronic device is gradually increasing, and structures capable of bending from a flat state to a predetermined angle are also being developed. Figure 1 is a plan view of a display device when the first circuit board is unfolded. Figure 2 is a plan view of a display device when the first circuit board is bent. Figure 3 is a rear view of the display device when the first circuit board is unfolded. Figure 4 is a cross-sectional view taken along A-A' of Figure 2. FIG. 5 is a plan view showing a manufacturing apparatus for a display device according to one embodiment. FIG. 6 is a plan view showing a manufacturing apparatus for a display device having a display device mounted thereon according to one embodiment. Figure 7 is a front view showing a manufacturing device for the display device illustrated in Figure 6. FIG. 8 is a block diagram of a manufacturing apparatus for a display device according to one embodiment. Figure 9 is a flowchart of a method for manufacturing a display device. FIGS. 10 to 15 are step-by-step plan and cross-sectional views of a method for manufacturing a display device according to one embodiment. FIG. 16 is a plan view showing the schematic locations of panel marks, base marks, and process marks according to another embodiment. FIG. 17 is a plan view showing the schematic locations of panel marks, base marks, and process marks according to another embodiment. The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. When elements or layers are referred to as being "on" another element or layer, this includes cases where another layer or element is interposed directly on or in the middle of another element. Throughout the specification, the same reference numerals refer to the same components. Shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings for describing embodiments are exemplary and therefore the invention is not limited to the depicted details. FIG. 1 is a plan view of a display device when the first circuit board is unfolded. FIG. 2 is a plan view of a display device when the first circuit board is bent. Referring to FIGS. 1 and 2, the display device (10) is a device for displaying video or still images, and the display device (10) can be used as a display screen for various electronic products such as televisions, laptops, monitors, billboards, and Internet of Things devices, as well as portable electronic devices such as mobile phones, smartphones, tablet PCs (Personal Computers), smartwatches, watch phones, mobile communication terminals, electronic notebooks, e-books, PMPs (Portable Multimedia PCs), navigation systems, and UMPCs (Ultra Mobile PCs). The display device (10) may have an approximate rectangular shape having two short sides in the first direction (X) and two long sides in the second direction (Y) on a plane, but is not limited thereto. The display device (10) may have various planar shapes such as polygons, circles, and ellipses. The display device (10) may include a display panel (20), a first circuit board (FB), and a second circuit board (MB). The display panel (20) may include a light-emitting element. For example, the display panel (20) may be an organic light-emitting display panel (20) using an organic light-emitting diode including an organic light-emitting layer, a micro light-emitting diode display panel (20) using a micro LED, a quantum dot light-emitting display panel (20) using a quantum dot light-emitting diode including a quantum dot light-emitting layer, or an inorganic light-emitting display panel (20) using an inorganic light-emitting element including an inorganic semiconductor. In one embodiment, the display panel (20) may be an organic light-emitt