CN-122028572-A - Display panel manufacturing apparatus

Abstract

The present disclosure relates to a display panel manufacturing apparatus that prevents a light emitting element from being damaged when detached from a donor member during a transfer process. To achieve this, the display panel manufacturing apparatus of the present disclosure may pick up a plurality of light emitting elements from a donor member in which the plurality of light emitting elements connected to each other through a tether structure are disposed by a transfer member without causing any damage to them by configuring the tether to be easily broken and forming a plurality of protrusions on a substrate to support the light emitting elements during pick up.

Inventors

• Huang Yongshuo
• Guo Durong
• H.JIANG
• Cui Fengshuo

Assignees

• 乐金显示有限公司

Dates

Publication Date

20260512

Application Date

20250928

Priority Date

20241112

Claims (20)

1. 1. A display panel manufacturing apparatus, comprising: A donor member, wherein a plurality of light emitting elements are disposed on the donor member by a tether structure and are connected to each other by the tether structure, and A transfer member that picks up the plurality of light emitting elements from the donor member and transfers the plurality of light emitting elements onto a display panel, Wherein the tether structure comprises a plurality of anchors spaced at regular intervals on the substrate of the donor member, and a plate-shaped tether disposed on the plurality of anchors, and Wherein each light emitting element of the plurality of light emitting elements is disposed on the tether between the plurality of anchors.
2. 2. The display panel manufacturing apparatus according to claim 1, wherein a plurality of protrusions are formed on the substrate between the plurality of anchors.
3. 3. The display panel manufacturing apparatus according to claim 2, wherein each of the plurality of protrusions has one or more of a hemispherical shape, a rectangular parallelepiped shape, a hexahedral shape, a cylindrical shape, and a hemispherical pillar shape.
4. 4. The display panel manufacturing apparatus according to claim 2, wherein each of the plurality of protrusions has a height smaller than a height of the plurality of anchors.
5. 5. The display panel manufacturing apparatus according to claim 2, wherein each of the plurality of protrusions has a thickness smaller than a thickness of the plurality of anchors.
6. 6. The display panel manufacturing apparatus according to claim 1, wherein the tether between the anchor and the light emitting element includes a plate-shaped straight surface, a through hole surface in which a through hole is formed, and a groove surface in which a groove is formed.
7. 7. The display panel manufacturing apparatus according to claim 6, wherein a width of the through hole surface is equal to a width of the light emitting element and is larger than a width of the straight surface.
8. 8. The display panel manufacturing apparatus according to claim 6, wherein a width of the straight surface is the same as a width of the groove surface.
9. 9. The display panel manufacturing apparatus according to claim 6, wherein a width of each of the light emitting elements is equal to a width of each of the anchors and a width of the through hole surface.
10. 10. The display panel manufacturing apparatus according to claim 1, wherein an adhesive material or an adhesive material is applied on an upper surface of the tether, and Wherein the tether is adhered or stuck to the plurality of light emitting elements by the adhesive material or the tacky material.
11. 11. The display panel manufacturing apparatus according to claim 1, further comprising a bonding electrode provided on a surface of the light emitting element facing the donor member.
12. 12. The display panel manufacturing apparatus according to claim 11, wherein the bonding electrode includes a bonding material for press-fusion bonding.
13. 13. The display panel manufacturing apparatus according to claim 1, wherein the transfer member includes a base layer and a stamp layer disposed on one surface of the base layer.
14. 14. The display panel manufacturing apparatus according to claim 13, wherein a thickness of the stamp layer is smaller than a thickness of the base layer.
15. 15. The display panel manufacturing apparatus according to claim 13, wherein an adhesive material or an adhesive material is applied on a surface of the stamp layer.
16. 16. The display panel manufacturing apparatus according to claim 15, wherein when the transfer member picks up the plurality of light emitting elements from the donor member, the transfer member is adhered or stuck to the plurality of light emitting elements by the adhesive material or the adhesive material of the stamp layer.
17. 17. The display panel manufacturing apparatus according to claim 16, wherein the tackiness or adhesiveness between the transfer member and the plurality of light emitting elements is greater than the tackiness or adhesiveness between the donor member and the plurality of light emitting elements.
18. 18. The display panel manufacturing apparatus according to claim 17, wherein the tether between the plurality of anchors and the plurality of light emitting elements is disconnected when the transfer member picks up the plurality of light emitting elements from the donor member.
19. 19. The display panel manufacturing apparatus according to claim 13, wherein each of the light emitting elements comprises one or more of a first color sub-element, a second color sub-element, a third color sub-element, and a fourth color sub-element, the one or more sub-elements being adhered or affixed to the tether by an adhesive material or an adhesive material on the tether.
20. 20. The display panel manufacturing apparatus of claim 19, wherein the one or more sub-elements are disposed on a package lower substrate, and Wherein the stamp layer includes a first pickup portion and a second pickup portion protruding to a height greater than a height of each of the sub-elements.

Description

Display panel manufacturing apparatus Technical Field The present disclosure relates to display panel manufacturing apparatuses, and more particularly, to a display panel manufacturing apparatus that transfers light emitting elements (or LEDs) onto a display panel. Background Recently, a display device including a Light Emitting Diode (LED) (hereinafter, referred to as a "light emitting element") is attracting attention as a next-generation display device. Since the light emitting element is not provided with an organic material but with an inorganic material, it can emit light faster than a liquid crystal display device or an organic light emitting display device, has excellent light emitting efficiency, and displays a high-luminance image. These light emitting elements are attached to the donor member in a tethered configuration as an encapsulation unit during the transfer process. When the tether structure is disconnected, the light emitting elements connected with the tether structure are detached from the donor member as an encapsulation unit and transferred to the display panel through the transfer member. However, if all of the tethers are not broken at the same time when the light emitting element is detached from the donor member, this may result in a problem situation in which the side portions of the package or the light emitting element are damaged, or misalignment occurs between the transfer member and the light emitting element. Disclosure of Invention In view of the above, in order to solve the above-described drawbacks, the inventors of the present disclosure have invented a display panel manufacturing apparatus that prevents a light emitting element from being damaged when detached from a donor member during transfer. An object to be achieved according to embodiments of the present disclosure is to provide a display panel manufacturing apparatus that can prevent damage to a light emitting element package by enabling a light emitting element to be easily detached from a donor member during a transfer process without being damaged, and without misalignment occurring between the transfer member and the light emitting element. The objects of the present invention are not limited to the above objects, and other objects and advantages of the present invention, which are not mentioned, will be understood from the following description, and will be more clearly understood from the embodiments of the present invention. Furthermore, it will be readily understood that the objects and advantages of the present disclosure may be realized by the means presented in the claims, and combinations thereof. The display panel manufacturing apparatus according to the embodiment of the present disclosure may pick up a plurality of light emitting elements from a donor member in which the plurality of light emitting elements connected to each other through a tether structure are disposed through a transfer member without causing any damage to them by configuring the tether to be easily broken and forming a plurality of protrusions on a substrate to support the light emitting elements during the pick-up process. According to the embodiments of the present disclosure, an effect of preventing damage to the light emitting element can be produced by restricting a movement displacement of the light emitting element by the protrusion structure when the transfer member picks up the light emitting element during the transfer process of the light emitting element. In addition, according to the embodiments of the present disclosure, an effect of improving transfer accuracy and thus preventing panel defects can be produced by preventing damage to the light emitting element during the transfer process. In addition, according to the embodiments of the present disclosure, improvement in quality of the display device may be achieved by preventing damage to the light emitting element or panel defect. In addition, according to the embodiments of the present disclosure, it is possible to prevent a reduction in the lifetime of the display panel by reducing defects in the display panel. In addition, according to the embodiments of the present disclosure, it is possible to produce an effect of providing a long-life, low-power display device by preventing a panel defect and thus allowing a display panel to operate without malfunction. The present disclosure may have other effects than the above-described effects, which will be apparent to those skilled in the art from the following description. In addition to the effects described above, specific effects of the present invention and specific details for practicing the present invention will be described below. Drawings Fig. 1 is a view schematically showing the overall configuration of a display panel manufacturing apparatus according to an embodiment of the present disclosure. Fig. 2 is a sectional view showing a configuration example of the donor member shown in fig. 1. Fig. 3 is a pla