TWI532153B - Display panel - Google Patents

Description

Display panel

The present invention relates to a display panel, and more particularly to a display panel driven by electrode lines.

Display technologies that are more common in the prior art, such as liquid crystal (LCD) displays or organic light-emitting diode (OLED) displays, are added to each pixel in addition to the voltage or electric field drive. The thin film transistor switch enables the pixels to produce a predetermined gray scale. However, the display incorporating the thin film transistor can effectively produce gray scale, but the substrate also needs to provide some areas to form these thin film transistors, and the thin film transistor itself is not transparent and the light is shielded, so that the display The resolution is difficult to further improve.

The present invention provides a display panel capable of providing a display panel having extremely fine metal electrodes.

The present invention provides a display panel including a substrate, a plurality of first electrode lines, a plurality of second electrode lines, and a plurality of light emitting layers, wherein the first electrode lines are disposed on the substrate; the second electrode lines are disposed on the first electrode lines The illuminating layer is interposed between the first electrode line and the second electrode line, and is electrically connected to the first electrode line and the second electrode line.

According to a preferred embodiment of the invention, the material forming the substrate comprises plastic, glass, germanium substrate or flexible material.

According to a preferred embodiment of the present invention, the material forming the first electrode line comprises a group consisting of copper, gold, silver, chromium, nickel, zinc, aluminum, tin, titanium, calcium, magnesium, sodium and alloys thereof. One of them, and the material forming the second electrode line is a transparent conductive material.

According to a preferred embodiment of the present invention, the material for forming the first electrode line and the second electrode line comprises copper, gold, silver, chromium, nickel, zinc, aluminum, tin, titanium, calcium, magnesium, sodium and alloys thereof. One of the groups formed, and the aperture ratio formed by the display panel is between 95% and 99.5%.

According to a preferred embodiment of the invention, each of the second electrode lines only partially covers the luminescent layer below it.

According to a preferred embodiment of the present invention, the material forming the light-emitting layer comprises an electrochromic material (EC), an organic light-emitting material or an inorganic light-emitting material.

According to a preferred embodiment of the invention, each of the luminescent layers is responsible for emitting one of red, green or blue light.

According to a preferred embodiment of the invention, each of the luminescent layers is responsible for emitting one of red, green, blue or yellow light.

According to a preferred embodiment of the present invention, the display panel of the present invention further comprises a plurality of color filters formed on the second electrode line, and the light-emitting layer is responsible for emitting white light.

According to a preferred embodiment of the present invention, the shape of the light-emitting layer may be one of a group consisting of a circle, a triangle, a square, and a hexagon.

According to a preferred embodiment of the present invention, the display panel of the present invention further comprises a protective layer formed on the second electrode line, and the material forming the protective layer comprises a nitrogen cerium compound.

According to a preferred embodiment of the present invention, the display panel of the present invention further includes an insulating layer formed between the substrate and the second electrode line, and the material forming the insulating layer comprises an oxonium compound or a polymer material.

According to a preferred embodiment of the invention, at least one of the luminescent layers may be covered by a plurality of second electrode lines.

According to a preferred embodiment of the present invention, the display panel of the present invention further includes an external driving circuit electrically connected to the first electrode line and the second electrode line.

With the above configuration, the display panel of the present invention can replace the voltage of the first electrode line and the second electrode line with an external driving circuit, such as a wafer, to control the light emission of each of the light emitting layers.

For a better understanding of the techniques, methods and efficacies of the present invention, reference should be made to the detailed description and drawings of the present invention. The drawings and the annexed drawings are for the purpose of illustration and description only

11‧‧‧Substrate

12‧‧‧Second electrode line

13‧‧‧First electrode line

14‧‧‧Lighting layer

15‧‧‧External drive circuit

16‧‧‧Protective layer

17‧‧‧Insulation

18‧‧‧Color filters

1 is a perspective view of a display panel according to a preferred embodiment of the present invention; FIG. 2 is a cross-sectional view of the display panel of the present invention; and FIGS. 3A-3D are schematic views showing the light-emitting layers of the display panel of the present invention arranged in different shapes; The invention display panel further comprises a plurality of color filters; and FIG. 5 is a cross-sectional view of the display panel of the present invention further comprising a plurality of color filters.

A display panel of the present invention will be explained below by way of embodiments. It should be noted that the embodiments of the present invention are not intended to limit the invention to any specific environment, application or special mode as described below. Therefore, the description of the embodiments is merely illustrative of the invention and is not intended to limit the invention.

Please refer to FIG. 1 , which is a perspective view of a display panel according to a preferred embodiment of the present invention. In this embodiment, the display panel of the present invention comprises a substrate 11, a plurality of first electrode lines 13, a plurality of second electrode lines 12, a plurality of light emitting layers 14, and an external driving circuit 15, wherein the first electrode lines 13 are disposed On the substrate 11, the second electrode line 12 is disposed above the first electrode line 13 and interlaced with the first electrode line 13, and the light-emitting layer 14 is interposed between the first electrode line 13 and the second electrode line 12 and Electrically connected to the first electricity The electrode line 13 and the second electrode line 12 are externally electrically connected to the first electrode line 13 and the second electrode line 12 from the outside.

In general, the external driving circuit 15 can be a wafer mounted on the substrate 11, but not limited thereto.

In actual operation, the first electrode line 13 and the second electrode line 12 supply a voltage to drive the light-emitting layer 14 to emit light, and the voltage of the first electrode line 13 and the second electrode line 12 is adjusted by the external driving circuit 15, thereby achieving control illumination. Layer 14 emits light for the purpose.

In the present invention, the number relationship and arrangement of the first electrode line 13, the second electrode line 12 and the light-emitting layer 14 are not particularly limited. For example, it may be a first electrode line 13 and a second electrode line 12. With a light-emitting layer 14, a plurality of first electrode lines 13 and a second electrode line 12 may be associated with one light-emitting layer 14, or one first electrode line 13 and a plurality of second electrode lines 12 may be associated with one The illuminating layer 14 and even the plurality of first electrode lines 13 and the plurality of second electrode lines 12 are associated with one illuminating layer 14 and may be changed as needed, and are not limited herein.

It should be noted that the second electrode line 12 of the display panel of the present invention is located above the light-emitting layer 14, and the second electrode line 12 only partially covers the light-emitting layer 14 to reduce the shielding of the light emitted by the second electrode line 12 from the light-emitting layer 14. To improve the brightness of the light.

Furthermore, in the present invention, the single luminescent layer 14 can emit light of one color, such as red light, green light or blue light. However, the luminescent layer 14 can also emit yellow light as needed to improve the color of the display panel of the present invention. Domain, in order to make the picture have a colorful effect.

In the present invention, the material of the substrate 11 may include plastic, glass, germanium substrate or flexible polymer material, such as Polyimide (PI) and polyethylene terephthalate (PET). )Wait. The material of the light-emitting layer 14 may be a material generally used for displays, including an electrochromic material (EC), an organic light-emitting material, or an inorganic light-emitting material. However, the above is only for reference and explanation, and the materials used are not limited to this.

In an embodiment of the invention, the material of the first electrode line 13 can use a material of a general metal electrode, including copper, gold, silver, chromium, nickel, zinc, aluminum, tin, titanium, calcium, One of the groups consisting of magnesium, sodium and alloys thereof, the material of the second electrode line 12 is a transparent conductive material such as indium tin oxide (ITO) and indium zinc oxide (IZO). Preferably, the line width of the second electrode line 12 is less than or equal to 10 micrometers (μm) to improve the light transmittance of the display panel of the present invention.

In an embodiment of the invention, the materials of the first electrode line 13 and the second electrode line 12 can simultaneously use materials of general metal electrodes, including copper, gold, silver, chromium, nickel, zinc, aluminum, tin, titanium, calcium. One of the groups of magnesium, sodium and alloys thereof, preferably, the second electrode line 12 has a line width of less than or equal to 10 micrometers (μm), but is not limited thereto.

According to the above configuration, the aperture ratio formed by the display panel of the present invention may preferably be between 95% and 99.5%.

Next, please refer to FIG. 2, which is a cross-sectional view of the display panel of the present invention. In a preferred embodiment of the present invention, the display panel of the present invention further includes a protective layer 16 and an insulating layer 17 in which the protective layer 16 is formed on the second electrode line 12 for protecting the first The electrode line 13 and the second electrode line 12 and the light-emitting layer 14 are not infiltrated by moisture. Therefore, the material forming the protective layer 16 may be any water-repellent material including, but not limited to, a nitrogen-based compound; the insulating layer 17 is formed on the substrate. 11 and the second electrode line 12 are used to prevent the first electrode line 13 and the second electrode line 12 from being short-circuited. Therefore, the material forming the insulating layer 16 may be any non-conductive material including an oxon compound or a polymer material, but Not limited to this.

3A-3D are schematic views showing the arrangement of the light-emitting layers 14 of the display panel of the present invention in different shapes. The illuminating layer 14 of the display panel of the present invention may be different in shape without limitation, and may be, for example, a circle, a triangle, a square or a hexagon, and may be arranged in an array, as shown in FIGS. 3A-3D, but Not limited to this.

In an embodiment of the invention, the display panel of the present invention further comprises a plurality of color filters 18, as shown in FIG. The color filter 18 is formed on the second electrode line 12, preferably formed directly above the light-emitting layer 14, as shown in FIG. In this embodiment, The luminescent layer 14 emits white light, which is then transmitted through the color filter 18 to determine the color of the external ray.

In summary, the present invention can provide a display panel that can be controlled by electrode line driving without using a thin film transistor (TFT), and the second electrode line located above the light emitting layer is made of a very fine metal wire, The light-emitting rate is blocked and the light conductivity is high, and the display panel of the present invention can be implemented into various flexible displays by using the metal ductility of the electrode wires in combination with the flexible substrate.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

11‧‧‧Substrate

12‧‧‧Second electrode line

13‧‧‧First electrode line

14‧‧‧Lighting layer

15‧‧‧External drive circuit

Claims (17)

A display panel includes: a substrate; a plurality of first electrode lines disposed on the substrate; and a plurality of second electrode lines disposed above the first electrode lines and interlaced with the first electrode lines; a plurality of light-emitting layers are disposed between the first electrode lines and the second electrode lines; wherein the light-emitting layers are electrically connected to the first electrode lines and the second electrode lines; The line width of the second electrode line is less than or equal to 10 micrometers (μm); wherein each of the second electrode lines partially covers the light-emitting layers, and the aperture ratio formed by the second electrode lines is between 95% and 99.5 %between. The display panel of claim 1, wherein a line width of each of the first electrode lines is less than or equal to 10 micrometers (μm). The display panel according to claim 2, wherein the material for forming the first electrode lines comprises copper, gold, silver, chromium, nickel, zinc, aluminum, tin, titanium, calcium, magnesium, sodium and alloys thereof. One of the group consisting of, and the material forming the second electrode lines is a transparent conductive material. The display panel of claim 1, wherein the material for forming the first electrode lines and the second electrode lines comprises copper, gold, silver, chromium, nickel, zinc, aluminum, tin, titanium, calcium, One of a group of magnesium, sodium and their alloys. The display panel according to claim 1, wherein the material package forming the substrate is Includes plastic, glass, tantalum substrates or flexible materials. The display panel according to claim 1, wherein the material forming the luminescent layer comprises an electrochromic material (EC), an organic luminescent material or an inorganic luminescent material. The display panel of claim 1, wherein each of the luminescent layers emits red, green or blue light. The display panel of claim 1, wherein each of the luminescent layers emits red, green, blue or yellow light. The display panel of claim 1, wherein each of the luminescent layers emits white light. The display panel of claim 9, further comprising a plurality of color filters, the color filters being formed on the second electrode lines. The display panel of claim 1, wherein each of the light-emitting layers is one of a group consisting of a circle, a triangle, a square, and a hexagon. The display panel of claim 1, further comprising a protective layer formed on the second electrode lines. The display panel according to claim 12, wherein the material forming the protective layer comprises a nitrogen hydrazine compound. The display panel of claim 1, further comprising an insulating layer formed between the substrate and the second electrode lines. The display panel according to claim 14, wherein the material forming the insulating layer comprises an oxonium compound or a polymer material. The display panel of claim 1, wherein the at least one luminescent layer is covered by the plurality of second electrode lines. The display panel of claim 1, further comprising an external driving circuit electrically connected to the first electrode lines and the second electrode lines.