KR-102961528-B1 - DISPLAY PANEL

Abstract

A display panel is disclosed. The display panel comprises a substrate, subpixels arranged along pixel rows and pixel columns on the substrate, light-emitting layers formed on each of the subpixels, dummy patterns arranged to correspond to the subpixels, a bank arranged between the dummy patterns, and a connecting pattern connecting at least two dummy patterns in which light-emitting layers that output light of the same color are arranged, wherein each of the light-emitting layers extends from each of the subpixels to each of the dummy patterns corresponding to each of the subpixels.

Inventors

• 김수필
• 오영무
• 이지훈
• 공창용

Assignees

• 엘지디스플레이 주식회사

Dates

Publication Date

20260507

Application Date

20191231

Claims (13)

1. Substrate; Subpixels arranged along pixel rows and pixel columns on the substrate; Light-emitting layers formed on each of the above subpixels; Dummy patterns arranged to correspond to the above subpixels; A bank disposed between the above dummy patterns; and Each of the above light-emitting layers is arranged to extend from each of the above subpixels to each of the dummy patterns corresponding to each of the above subpixels, and It includes a connecting pattern connecting at least two dummy patterns among the above dummy patterns, wherein light-emitting layers emitting the same color are arranged. The above subpixels include first subpixels and second subpixels, and The above dummy patterns include first dummy patterns arranged to correspond to the first subpixels and second dummy patterns arranged to correspond to the second subpixels, and The above connection pattern includes a first connection pattern connecting at least two of the first dummy patterns and a second connection pattern connecting at least two of the second dummy patterns. The first connection pattern and the second connection pattern are separated by the bank, Display panel.
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4. In paragraph 1, The first connection pattern is arranged to surround the second connection pattern, Display panel.
5. In paragraph 1, The light-emitting layers disposed on the above at least two dummy patterns are disposed extending onto the connection pattern, Display panel.
6. In paragraph 5, The light-emitting layers disposed on the above at least two dummy patterns are connected to each other on the connection pattern. Display panel.
7. In paragraph 1, The width of the above dummy patterns is greater than the width of the above connection pattern, Display panel.
8. In paragraph 1, the bank is, A first bank having hydrophilicity; and A second bank formed on the first bank and comprising at least one region having hydrophobicity, Display panel.
9. In paragraph 8, The second bank is positioned such that at least a portion extends into the dummy patterns and the connection pattern, Display panel.
10. In Paragraph 9, The height of the second bank placed on the above connection pattern is greater than the height of the second bank placed on the above dummy pattern, Display panel.
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12. Substrate; Subpixels arranged along pixel rows and pixel columns on the substrate; Light-emitting layers formed on each of the above subpixels; Dummy patterns arranged to correspond to the above subpixels; A bank disposed between the above dummy patterns; and Each of the above light-emitting layers is arranged to extend from each of the above subpixels to each of the dummy patterns corresponding to each of the above subpixels, and The above dummy patterns include a connecting pattern connecting at least two dummy patterns in which light-emitting layers emitting light of the same color are disposed, wherein the dummy patterns include upper dummy patterns disposed at one end of the subpixels and lower dummy patterns disposed at the other end of the subpixels. The above connection pattern is, An upper connecting pattern connecting at least two upper dummy patterns having light-emitting layers that output light of the same color among the above upper dummy patterns; and A lower connecting pattern comprising at least two lower dummy patterns having light-emitting layers that output light of the same color among the above lower dummy patterns, Display panel.
13. In Paragraph 12, The above at least two upper dummy patterns and the above at least two lower dummy patterns are placed in different pixel columns, Display panel.

Description

Display Panel The present invention relates to a display panel. As the information society advances, various types of display devices are being developed. Recently, various display devices such as Liquid Crystal Displays (LCDs), Plasma Display Panels (PDPs), and Organic Light Emitting Displays (OLEDs) are being utilized. The organic light-emitting diodes constituting the organic light-emitting display are self-emissive and do not require a separate light source, which allows for a reduction in the thickness and weight of the display. Furthermore, organic light-emitting displays exhibit high-quality characteristics such as low power consumption, high brightness, and high response speed. Recently, technology for forming the light-emitting layer of organic light-emitting diodes (OLEDs) through solution processes using inkjet equipment is being developed. The solution process involves dropping a solution for forming the light-emitting layer onto a designated area and then drying it. However, dewetting occurring at the outer edges of the solution can prevent the light-emitting layer from forming properly on the pixels located at the periphery, potentially leading to pixel defects. FIG. 1 is a block diagram showing the configuration of a display device according to one embodiment. Figure 2 is a circuit diagram showing an example of a pixel illustrated in Figure 1. FIG. 3 is a schematic perspective view of the display panel shown in FIG. 1. FIG. 4 is a schematic plan view of an enlarged portion of a display area and a non-display area according to one embodiment. Figure 5 is a cross-sectional view along the line I-I' of Figure 4. FIG. 6 shows a display panel according to embodiments of the present disclosure. Figure 7 shows a cross-section along the line I-I' of Figure 6. Figure 8 shows a cross-section along the line II-II' of Figure 6. Hereinafter, embodiments are described with reference to the drawings. In this specification, where a component (or region, layer, part, etc.) is described as being "on," "connected," or "joined" to another component, it means that it may be directly connected/joined to the other component or that a third component may be placed between them. Identical reference numerals denote identical components. Additionally, in the drawings, the thicknesses, proportions, and dimensions of the components are exaggerated for the effective illustration of the technical content. "And/or" includes all of one or more combinations that the associated components may define. Terms such as "first," "second," etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present embodiments, the first component may be named the second component, and similarly, the second component may be named the first component. A singular expression includes a plural expression unless the context clearly indicates otherwise. Terms such as "below," "lower side," "above," and "upper side" are used to describe the relationships between the components depicted in the drawings. These terms are relative concepts and are described based on the directions indicated in the drawings. Terms such as "include" or "have" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. FIG. 1 is a block diagram showing the configuration of a display device according to one embodiment. Referring to FIG. 1, the display device (1) includes a timing control unit (10), a gate driving unit (20), a data driving unit (30), a power supply unit (40), and a display panel (50). The timing control unit (10) can receive an image signal (RGB) and a control signal (CS) from the outside. The image signal (RGB) may include multiple grayscale data. The control signal (CS) may include, for example, a horizontal synchronization signal, a vertical synchronization signal, and a main clock signal. The timing control unit (10) can process the image signal (RGB) and the control signal (CS) to suit the operating conditions of the display panel (50) and generate and output image data (DATA), a gate driving control signal (CONT1), a data driving control signal (CONT2), and a power supply control signal (CONT3). The gate driver (20) can be connected to pixels (PX) of the display panel (50) through a plurality of gate lines (GL1~GLn). The gate driver (20) can generate gate signals based on a gate driving control signal (CONT1) output from the timing control unit (10). The gate driver (20) can provide the generated gate signals to the pixels (PX) through the plurality of gate lines (GL1~GLn). The data driving unit (30) can be conne