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JP-2026075227-A - display device

JP2026075227AJP 2026075227 AJP2026075227 AJP 2026075227AJP-2026075227-A

Abstract

[Problem] To provide a display device that enables narrow bezels. [Solution] A display device according to one embodiment comprises a display area, a peripheral area outside the display area, a plurality of scan lines extending in a first direction and arranged in a second direction intersecting the first direction, a first semiconductor layer disposed in the display area and overlapping with the plurality of scan lines, and a second semiconductor layer disposed in the peripheral area and overlapping with one of the plurality of scan lines, wherein the second semiconductor layer includes a first dummy semiconductor patterned in the shape of an identification symbol. [Selection Diagram] Figure 7

Inventors

  • 藤本 貴光
  • 原田 賢治
  • 鈴木 喬之

Assignees

  • 株式会社Magnolia White

Dates

Publication Date
20260508
Application Date
20241022

Claims (19)

  1. Display area and, The peripheral area outside the aforementioned display area, Multiple scan lines extending in a first direction and aligned in a second direction intersecting the first direction, A first semiconductor layer is arranged in the display area and overlaps with the plurality of scan lines, A second semiconductor layer is arranged in the peripheral region and overlaps with one of the plurality of scan lines, Equipped with, The second semiconductor layer includes a first dummy semiconductor patterned in the shape of an identification symbol. Display device.
  2. The system further comprises a plurality of signal lines extending in the second direction and aligned in the first direction, The shape of the identification symbol represents the wiring number of the scan line or the signal line. The display device according to claim 1.
  3. The area of the region where the scan line and the second semiconductor layer overlap is smaller than the area of the region where the scan line and the first semiconductor layer overlap. The display device according to claim 1.
  4. The area of the region where the scan line and the first dummy semiconductor overlap is smaller than the area of the region where the scan line and the first semiconductor layer overlap. The display device according to claim 1.
  5. The first dummy semiconductor intersects the scan line at two or more points. The display device according to claim 1.
  6. The second semiconductor layer includes a second dummy semiconductor that is spaced apart from the first dummy semiconductor along the first direction. The display device according to claim 1.
  7. The area of the region where the scan line and the second dummy semiconductor overlap is smaller than the area of the region where the scan line and the first semiconductor layer overlap. The display device according to claim 6.
  8. The area of the region where the scan line and the first dummy semiconductor overlap is smaller than the area of the region where the scan line and the second dummy semiconductor overlap. The display device according to claim 6.
  9. The second dummy semiconductor intersects the scan line at two or more points. The display device according to claim 6.
  10. The width in the first direction of the portion of the first dummy semiconductor that extends in the second direction and intersects the scanning line is smaller than the width in the first direction of the portion of the second dummy semiconductor that extends in the second direction and intersects the scanning line. The display device according to claim 6.
  11. The system further comprises a plurality of signal lines extending in the second direction and aligned in the first direction, The first dummy semiconductor is positioned between adjacent signal lines in the first direction. The display device according to claim 1.
  12. The system further comprises a plurality of power lines extending in the second direction and aligned in the first direction, The first dummy semiconductor is positioned between the signal line and the power line that are adjacent in the first direction. The display device according to claim 11.
  13. Display area and, The peripheral area outside the aforementioned display area, Multiple scan lines extending in a first direction and aligned in a second direction intersecting the first direction, A first semiconductor layer is arranged in the display area and overlaps with the plurality of scan lines, A second semiconductor layer is arranged in the peripheral region and overlaps with the plurality of scan lines, Equipped with, The second semiconductor layer includes a first segment that overlaps with one of the adjacent scan lines in the second direction, and a second segment that overlaps with the other adjacent scan line in the second direction and is spaced apart from the first segment. The combination of the first segment and the second segment constitutes the identification symbol shape. Display device.
  14. The system further comprises a plurality of signal lines extending in the second direction and aligned in the first direction, The shape of the identification symbol represents the wiring number of the scan line or the signal line. The display device according to claim 13.
  15. The first segment and the second segment intersect the scan line at two or more points, The display device according to claim 13.
  16. The first semiconductor layer and the second semiconductor layer are located in the same layer. The display device according to claim 1 or 13.
  17. The first semiconductor layer and the second semiconductor layer are formed of the same material. The display device according to claim 1 or 13.
  18. Each of the first semiconductor layer and the second semiconductor layer is formed of polysilicon, amorphous silicon, or an oxide semiconductor. The display device according to claim 1 or 13.
  19. A lower electrode is arranged in the display area and positioned above the first semiconductor layer, A rib layer made of an inorganic material has a pixel aperture that overlaps with the lower electrode, covers the peripheral edge of the lower electrode, A partition wall comprising a conductive lower portion disposed on the rib layer and an upper portion disposed on the lower portion and protruding from the side surface of the lower portion, An organic layer covering the lower electrode through the pixel aperture, The above organizing layer is covered by an upper electrode that is in contact with the lower part, and further comprises The display device according to claim 1 or 13.

Description

Embodiments of the present invention relate to a display device. In recent years, display devices using organic light-emitting diodes (OLEDs) as display elements have been put into practical use. This type of display device requires technology that enables narrow bezels. Japanese Patent Publication No. 2000-195677Japanese Patent Publication No. 2004-207217Japanese Patent Publication No. 2008-135325Japanese Patent Publication No. 2009-32673Japanese Patent Publication No. 2010-118191International Publication No. 2018/179308U.S. Patent Application Publication No. 2022/0077251 Figure 1 shows an example of the configuration of a display device according to this embodiment.Figure 2 is a circuit diagram showing an example of a configuration applicable to the pixel circuit provided by each sub-pixel.Figure 3 is a schematic plan view showing an example of a sub-pixel layout.Figure 4 is a schematic cross-sectional view of the display device along the line IV-IV in Figure 3.Figure 5 is a schematic cross-sectional view showing an example of a layer configuration that can be applied to a circuit layer.Figure 6 shows an example of the configuration of transistors included in a circuit layer.Figure 7 is a schematic plan view showing an example of the boundary between the display area and the surrounding area.Figure 8 is a schematic cross-sectional view of the display device along the line VIII-VIII in Figure 7.Figure 9 is a schematic plan view showing an example of the configuration of scan lines, semiconductors, and dummy semiconductors.Figure 10 is a schematic plan view showing another example of the configuration of a scan line and dummy semiconductor.Figure 11 shows an example of the shape of an identification symbol.Figure 12 is a cross-sectional view illustrating the effects of the display device according to this embodiment.Figure 13 shows other examples of identification symbol shapes. Several embodiments will be described with reference to the drawings. The disclosure is merely an example, and any modifications that a person skilled in the art could easily conceive of while maintaining the spirit of the invention are naturally included within the scope of the present invention. Furthermore, the drawings may schematically represent the width, thickness, shape, etc., of each part in order to clarify the explanation, but these are merely examples and do not limit the interpretation of the present invention. In addition, in this specification and each drawing, the same reference numerals are used for components that perform the same or similar functions as those described above with respect to previously shown drawings, and redundant detailed explanations may be omitted as appropriate. Furthermore, the drawings will include mutually orthogonal X, Y, and Z axes as needed to facilitate understanding. The direction along the X-axis is referred to as the X-direction (first direction), the direction along the Y-axis as the Y-direction (second direction), and the direction along the Z-axis as the Z-direction. Viewing various elements parallel to the Z-direction is called a plan view. Each embodiment of the display device is an organic electroluminescent display device equipped with an organic light-emitting diode (OLED) as a display element, and can be mounted on various electronic devices such as televisions, personal computers, in-vehicle equipment, tablet terminals, smartphones, mobile phone terminals, and wearable devices. Figure 1 shows an example configuration of a display device DSP according to this embodiment. The display device DSP includes an insulating substrate 10. The substrate 10 has a display area DA for displaying an image and a peripheral area SA surrounding the display area DA. The substrate 10 may be glass or a flexible resin film. The Z direction corresponds to the thickness direction of the substrate 10. In this embodiment, the shape of the substrate 10 in plan view is circular. However, the shape of the substrate 10 in plan view is not limited to a circle; it may be a rectangle, square, ellipse, or other shape. The display area DA comprises multiple pixels PX arranged in a matrix in the X and Y directions. Each pixel PX includes multiple sub-pixels SP that display different colors. In this embodiment, it is assumed that pixel PX includes a green sub-pixel SP1, a blue sub-pixel SP2, and a red sub-pixel SP3. However, pixel PX may include sub-pixels SP of other colors, such as white, together with sub-pixels SP1, SP2, and SP3, or in place of any one of SP1, SP2, or SP3. The DSP display device further includes a terminal section T located in the peripheral region SA. A flexible circuit board, for example, that supplies voltage and signals for driving the DSP display device, is connected to the terminal section T. Figure 2 is a circuit diagram showing an example of a configuration applicable to the pixel circuit PC provided in each of the sub-pixels SP (SP1, SP2, SP3). The pixel circuit PC shown in this f