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KR-102965334-B1 - DISPLAY APPARATUS

KR102965334B1KR 102965334 B1KR102965334 B1KR 102965334B1KR-102965334-B1

Abstract

A display device according to one embodiment of the present invention comprises: a display panel including a display area and a non-display area; a back plate located on one side of the display panel and including a first ground path portion; and a heat dissipation plate located on the back side of the back plate and having a second ground path portion, wherein the first ground path portion covers at least each corner portion of the back plate and the second ground path portion is located to overlap the first ground path portion above and below.

Inventors

  • 하다혜

Assignees

  • 엘지디스플레이 주식회사

Dates

Publication Date
20260513
Application Date
20211229

Claims (13)

  1. A display panel including a display area and a non-display area; A back plate located on one side of the above-mentioned display panel and including a first ground path portion; and A heat dissipation plate located on the back surface of the above-mentioned back plate and equipped with a second ground path, comprising: The first grounding path covers at least each corner of the backplate, and the second grounding path is positioned to overlap the first grounding path above and below. The first grounding path section is a display device having a thickness greater than that of the display panel, such that the upper surface is positioned at a higher position than the upper surface of the display panel.
  2. In paragraph 1, The first grounding path portion is a display device that contacts each of the four side portions of the display panel.
  3. In paragraph 1, The above back plate includes a main area that overlaps with the display area of the display panel; and a border area that surrounds the main area. The first grounding path portion is disposed in the border area and is a display device comprising a conductive polymer material.
  4. In paragraph 3, The first ground path portion extends from the upper surface of each corner portion of the back plate to the side portion in the border area and covers the display device having a 'ㄱ' shape or an 'ㄴ' shape when viewed from a plane.
  5. In paragraph 3, A display device that extends from the upper surface of the back plate to the side portion while covering the front of the border area above the first ground path portion to surround it.
  6. In paragraph 5, The first ground path section is a display device having a rectangular ring shape that exposes the main area of the back plate when viewed from a plane.
  7. In paragraph 3, The first ground path portion extends from the upper surface of each corner portion of the back plate to the side portion in the border area and covers the display device having a triangular shape when viewed from a plane.
  8. delete
  9. In paragraph 1, The heat dissipation plate comprises a metal substrate; and black ink layers located on both sides of the metal substrate, and A main area overlapping with the display area of the above-mentioned display panel; and a border area surrounding the main area, comprising The second grounding path portion is located in the border area so as not to overlap with the main area, and is a display device comprising aluminum (Al), gold (Au), or copper (Cu).
  10. In Paragraph 9, A display device comprising a plurality of trench shapes having a first depth and a first width from the surface of the metal substrate, wherein the second ground path portion includes a plurality of trench shapes that expose the surface of the metal substrate at the bottom surface and both side portions of the trenches located at a position lower than the surface of the metal substrate.
  11. In Article 9, A display device in which a plurality of trenches of the second ground path portion surround the four sides of the edge area of the heat dissipation plate, and adjacent trenches are spaced apart from each other.
  12. In Paragraph 11, The above-mentioned plurality of second grounding path sections is a display device in which a plurality of rectangular rings are spaced apart from each other when viewed from a plane.
  13. In Paragraph 9, The above second ground path portion is a display device including a black ink layer pattern that includes an open area exposing the surface of the metal substrate.

Description

Display apparatus This specification relates to a display device, and more specifically, to a display device capable of preventing panel quality degradation caused by static electricity in a vehicle display device. Display devices are being applied to various electronic devices such as TVs, mobile phones, laptops, and tablets. To this end, research is continuously being conducted to develop thinner, lighter, and lower power consumption display devices. Display devices include Liquid Crystal Display device (LCD), Plasma Display Panel device (PDP), Field Emission Display device (FED), Electro-Wetting Display device (EWD), and Organic Light Emitting Display (OLED). An organic light-emitting display (OLED) includes a plurality of pixel regions arranged in a display area where an image is displayed, and a plurality of organic light-emitting elements corresponding to the plurality of pixel regions. Since organic light-emitting elements are self-emissive devices that emit light on their own, the organic light-emitting display has the advantages of faster response speed compared to liquid crystal displays, higher luminous efficiency, brightness, and viewing angle, as well as superior contrast ratio and color reproduction rate. Due to these advantages, organic light-emitting diodes (OLEDs) are widely used not only in electronic devices such as TVs, mobile phones, and laptops, but also in the interfaces of other electronic devices. Amidst this, as the electronification of automobiles accelerates, the application of OLEDs in automotive user interfaces is steadily increasing. For example, OLEDs are being utilized to implement automotive displays that provide drivers with necessary information, such as instrument panels (or clusters), navigation systems, and audio multimedia information. Vehicle display devices, including such vehicle instrument panels, must take into account user convenience and safety, so it is important to provide a high-quality display panel. FIG. 1 is a drawing showing the application configuration of a display device according to one embodiment of the present specification. Figures 2 to 4 are drawings illustrating electrostatic stain defects occurring in a display panel. FIGS. 5 to 7b are drawings shown to explain a display device according to one embodiment of the present specification. FIGS. 8a to 8c are drawings showing a first grounding path section according to embodiments of the present specification. FIG. 9 is a cross-sectional view of the display device of FIG. 7b along the I-I' direction. Figure 10 is a plan view of the heat dissipation plate of Figure 9. Figure 11 is a drawing showing another example of a heat dissipation plate. The advantages and features of this specification and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, this specification 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 this specification is complete and to fully inform those skilled in the art of the scope of the invention, and this specification is defined only by the scope of the claims. Shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are exemplary and are not limited to the depicted items. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of this specification, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise. In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement. In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used. In the case of an explanation of a temporal relationship, for example, when a temporal sequence is explained using 'after', 'following', 'next', 'before', etc., it may include cases where the sequence is not continuous unless 'immediately' or 'directly' is used. Although terms such as "first," "second," etc. are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the s