Display panel

Abstract

The invention discloses a display panel which comprises a substrate, a first metal layer, a second metal layer, a common electrode layer and a shading layer. The first metal layer comprises a plurality of first scanning lines which extend along a first direction. The second metal layer comprises a plurality of data lines which extend along a second direction. The second direction is not parallel to the first direction. The vertical projection of the common electrode layer on the first scanning lines forms a plurality of first overlapping areas which are separated from each other. The vertical projection of the light shielding layer on the first scanning lines does not overlap at least one of the first overlapping areas.

Description

Technical Field

[0001] The invention relates to a display panel. Background Art

[0002] As the technology industry develops day by day, displays have been widely used in daily life. In traditional displays, a black matrix and a common electrode layer are usually configured on the scanning line, which causes a decrease in the aperture ratio and increases the loss of light energy. Summary of the invention

[0003] The present invention provides a display panel with good aperture ratio and transmittance.

[0004] According to an embodiment of the present invention, a display panel is provided, comprising a substrate, a first metal layer, a second metal layer, a common electrode layer and a light shielding layer. The first metal layer is located on the substrate, and the first metal layer includes a plurality of first scan lines, and the first scan lines extend along a first direction. The second metal layer is located on the substrate, and the second metal layer includes a plurality of data lines, and the data lines extend along a second direction. The second direction is not parallel to the first direction. The vertical projection of the common electrode layer on the first scan lines forms a plurality of first overlapping regions separated from each other. The vertical projection of the light shielding layer on the first scan lines does not overlap at least one of the first overlapping regions.

[0005] Based on the above, in the display panel provided by the embodiment of the present invention, the vertical projection of the common electrode layer on the scan line can form multiple overlapping areas separated from each other, and the vertical projection of the light shielding layer on the scan line does not overlap the overlapping areas. Accordingly, the display panel can have a higher aperture ratio and transmittance.

[0006] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1A is a partial plan view of a display panel according to an embodiment of the present invention, Figure 1B For along Figure 1A A schematic cross-sectional view of the dashed line AA' in FIG. Figure 1C For along Figure 1A Schematic diagram of the cross section along the dotted line BB'.

[0008] Figure 2 is a partial enlarged schematic diagram of a display panel according to a comparative example.

[0009] Figure 3A is a partial plan view of a display panel according to another embodiment of the present invention, Figure 3B For along Figure 3A Schematic diagram of the cross section of the dotted line CC'.

[0010] Wherein, the reference numerals are:

[0011] 100, 200: Display panel

[0012] 101, 102: Substrate

[0013] 103, 203: common electrode layer

[0014] 104: Pixel electrode layer

[0015] BL: Buffer layer

[0016] BM: Light-shielding layer

[0017] CF: Color resistance layer

[0018] GI: Interlayer insulation layer

[0019] IL: Insulation layer

[0020] M1: First metal layer

[0021] M2: Second metal layer

[0022] OA, CA: Overlapping area

[0023] PL: Flat layer

[0024] SP: Sub-Pixel

[0025] SL: Scan Line

[0026] DL: Data line DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0028] Reference Figure 1A , Figure 1B as well as Figure 1C . Figure 1A is a partial plan view of a display panel according to an embodiment of the present invention, Figure 1B For along Figure 1A A schematic cross-sectional view of the dashed line AA' in FIG. Figure 1C For along Figure 1A Schematic diagram of the cross section along the dotted line BB'.

[0029] like Figure 1AAs shown, the display panel 100 includes a plurality of sub-pixels SP and a plurality of scan lines SL and a plurality of data lines DL corresponding to the boundaries of the sub-pixels SP. The scan lines SL extend along the X direction, and the data lines DL extend along the Y direction. Each sub-pixel SP includes an active element and a pixel electrode (not shown), and each active element is electrically connected to the corresponding scan line SL and the corresponding data line DL. The pixel electrode of each sub-pixel SP is electrically connected to the corresponding active element.

[0030] like Figure 1B as well as Figure 1C As shown, the display panel 100 includes a stacked substrate 101, a first metal layer M1, a second metal layer M2, a pixel electrode layer 104, a common electrode layer 103, a color resist layer CF, a light shielding layer BM and a substrate 102. The first metal layer M1 includes a scan line SL and a gate electrode of each active element. The second metal layer M2 includes a data line DL and a source electrode and a drain electrode of each active element. The pixel electrode layer 104 includes a pixel electrode of each sub-pixel SP.

[0031] Please refer to Figure 2 In some comparative examples, the display panel includes a scan line SL, a common electrode layer 203, and a light shielding layer BM. The vertical projection of the common electrode layer 203 on the scan line SL is continuously distributed, and the vertical projection overlaps with the vertical projection of the light shielding layer BM on the scan line SL. In some other comparative examples, the display panel includes a scan line SL and a common electrode layer 203, and the vertical projection of the common electrode layer 203 on the scan line SL is continuously distributed.

[0032] Re-reference Figure 1A as well as Figure 1B ,in Figure 1A A partial enlarged view of the area corresponding to the dotted line AA' is shown. Figure 2 In this embodiment, the common electrode layer 103 is vertically projected on the scan line SL (first metal layer M1) to form a plurality of overlapping areas OA (such as Figure 1A As shown), the vertical projection of the light shielding layer BM on the scanning line SL (the first metal layer M1) does not overlap at least one of the overlapping areas OA, such as Figure 1B As shown. Accordingly, the display panel 100 of this embodiment can have a higher aperture ratio and transmittance than the display panel of the comparative example. According to one embodiment, the display panel 100 of this embodiment can have a relative transmittance of 101.5% compared to the display panel of the comparative example (relative transmittance of 100%).

[0033] Also refer to Figure 1BThe second metal layer M2 is connected in parallel with the scan line SL through a conductive via disposed in the interlayer insulating layer GI, thereby reducing the resistance. However, the present invention is not limited thereto. In some embodiments, Figure 1B The scan line SL in the embodiment may not be connected in parallel with the second metal layer M2. Figure 1B The second metal layer M2 may not be disposed on the scan line SL.

[0034] The vertical projection of the data line DL on the scan line SL (the first metal layer M1) overlaps the vertical projection of the light shielding layer BM on the scan line SL (the first metal layer M1) and falls within the vertical projection of the light shielding layer BM. Figure 1B As shown, color mixing between different sub-pixels SP can be avoided.

[0035] In addition, the vertical projection of the data line DL on the scan line SL (the first metal layer M1) overlaps the vertical projection of the common electrode layer 103 on the scan line SL (the first metal layer M1) and falls within the vertical projection of the common electrode layer 103, as shown in FIG. Figure 1B shown.

[0036] Reference Figure 1C , the vertical projection of the data line DL on the substrate 101 overlaps the vertical projection of the common electrode layer 103 on the substrate 101, and falls within the vertical projection of the common electrode layer 103. In addition, the vertical projection of the light shielding layer BM on the substrate 101 overlaps the vertical projection of the common electrode layer 103 on the substrate 101, and falls within the vertical projection of the common electrode layer 103.

[0037] In order to fully illustrate the various embodiments of the present invention, other embodiments of the present invention will be described below. It must be noted that the following embodiments use the component numbers and some contents of the previous embodiments, wherein the same numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. For the description of the omitted parts, please refer to the previous embodiments, and the following embodiments will not be repeated.

[0038] Reference Figure 3A as well as Figure 3B . Figure 3A is a partial plan view of a display panel according to an embodiment of the present invention, Figure 3B For along Figure 3A Schematic diagram of the cross section of the dotted line CC'.

[0039] The display panel 200 of this embodiment is Figures 1A to 1C The display panel 100 shown has substantially the same structure. Specifically, Figure 3A The cross-sectional view of the dashed line AA' has the following characteristics: Figure 1B The structure is roughly the same as shown. Figure 3AThe cross-sectional view of the dashed line BB' has the following characteristics: Figure 1C The substantially same structure shown is not described in detail here.

[0040] The display panel 200 of this embodiment is Figures 1A to 1C The display panel 100 shown in FIG. 1 is different mainly in that in the cross-sectional view corresponding to the dotted line CC′ ( Figure 3B ), the vertical projection of the common electrode layer 103 on the scan line SL (first metal layer M1) is a continuously distributed overlapping area CA. Figures 1A to 1C In the display panel 100 shown in FIG. 1 , a portion of the common electrode layer 103 corresponding to any scan line SL is vertically projected onto the scan line SL to form a plurality of discrete overlapping areas OA (eg, Figure 1A In contrast, FIG. 3A to FIG. 3B In the display panel 200 shown, the vertical projections of the portion of the common electrode layer 103 corresponding to the portion of the scan lines SL on the scan lines SL can form a plurality of overlapping areas OA (corresponding to the dotted line AA') that are separate from each other, and the vertical projections of the portion of the common electrode layer 103 corresponding to the portion of the scan lines SL on the scan lines SL are formed into continuously distributed overlapping areas CA (corresponding to the dotted line CC'), thereby improving the uniformity of the common electrode potential (Vcom).

[0041] According to some embodiments, the display panel 200 is provided with Figure 3B The scanning line SL (hereinafter referred to as the second scanning line) of the common electrode layer 103 is shown and the scanning line SL is provided thereon. Figure 1B The scan lines SL (hereinafter referred to as the first scan lines) of the common electrode layer 103 shown can be staggered along the Y direction. Specifically, in some embodiments, the gaps between the second scan lines adjacent to each other in the Y direction can correspond to N sub-pixels SP, where N is an integer greater than or equal to 2. Taking N equal to 2 as an example, the first scan line, the second scan line, the first scan line, the second scan line... and so on are sequentially arranged along the Y direction. Taking N equal to 3 as an example, the first scan line, the first scan line, the second scan line, the first scan line, the first scan line, the second scan line, the first scan line... and so on are sequentially arranged along the Y direction. In some preferred embodiments, N is an integer greater than or equal to 2 and less than or equal to 10, so as to have both the transmittance of the display panel 200 and the uniformity of the common electrode potential.

[0042] In summary, in the display panel provided by the embodiment of the present invention, the vertical projection of the common electrode layer on the scan line can form multiple overlapping areas separated from each other, and the vertical projection of the light shielding layer on the scan line does not overlap the overlapping areas. Accordingly, the display panel can have a higher aperture ratio and transmittance.

[0043] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A display panel, characterized in that: include: substrate; A first metal layer, located on the substrate, the first metal layer comprising a plurality of first scanning lines, and the plurality of first scanning lines extend along a first direction; A second metal layer, located on the substrate, the second metal layer comprising a plurality of data lines, the plurality of data lines extending along a second direction, the second direction being non-parallel to the first direction; A common electrode layer, wherein vertical projections on the plurality of first scanning lines form a plurality of first overlapping regions separated from each other; as well as The light shielding layer has a vertical projection on the plurality of first scanning lines that does not overlap at least one of the plurality of first overlapping regions.

2. The display panel according to claim 1, wherein: At least a portion of the second metal layer is configured in parallel with the plurality of first scanning lines.

3. The display panel according to claim 1, wherein: The vertical projections of the plurality of data lines on the plurality of first scanning lines overlap the vertical projections of the light shielding layer on the plurality of first scanning lines, and fall within the vertical projections of the light shielding layer on the plurality of first scanning lines.

4. The display panel according to claim 1, wherein: The vertical projections of the plurality of data lines on the plurality of first scan lines overlap the vertical projections of the common electrode layer on the plurality of first scan lines, and fall within the vertical projections of the common electrode layer on the plurality of first scan lines.

5. The display panel according to claim 1, wherein: The vertical projections of the plurality of data lines on the substrate overlap with the vertical projection of the common electrode layer on the substrate, and fall within the vertical projection of the common electrode layer on the substrate.

6. The display panel according to claim 1, wherein: The vertical projection of the light shielding layer on the substrate overlaps with the vertical projection of the common electrode layer on the substrate and falls within the vertical projection of the common electrode layer on the substrate.

7. The display panel according to claim 1, wherein: The first metal layer further includes a plurality of second scanning lines, the plurality of second scanning lines extend along the first direction, and vertical projections of the common electrode layer on the plurality of second scanning lines form a continuously distributed second overlapping area.

8. The display panel according to claim 7, wherein: The gaps between any two adjacent second scanning lines in the second direction correspond to N sub-pixels, where N is an integer greater than or equal to 2.

9. The display panel according to claim 8, wherein: Wherein N is an integer less than or equal to 10.

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