CN-116991005-B - Display device

CN116991005BCN 116991005 BCN116991005 BCN 116991005BCN-116991005-B

Abstract

The invention discloses a display device which comprises a first substrate, a first wire layer, a first electrode, a second substrate, a display medium layer and a second electrode. The first conducting wire layer and the first electrode are positioned between the first substrate and the second substrate, the display medium layer is positioned between the first electrode and the second substrate, and the second electrode is positioned between the display medium layer and the second substrate. The first electrode comprises a plurality of first lower electrode patterns and a plurality of first upper electrode patterns which are electrically separated from each other, wherein the plurality of first lower electrode patterns and the plurality of first upper electrode patterns are respectively and electrically connected with a plurality of first wires of the first wire layer, a plurality of first gaps are arranged between the plurality of first lower electrode patterns, and the plurality of first upper electrode patterns are respectively overlapped with the plurality of first gaps.

Inventors

LIN JINAN
ZENG YIHAN
TIAN KUNZHENG

Assignees

友达光电股份有限公司

Dates

Publication Date: 20260505
Application Date: 20230808
Priority Date: 20230104

Claims (12)

1.A display device, comprising: A first substrate; The first wire layer is positioned on the first substrate and comprises a plurality of first wires; a first electrode disposed on the first substrate and including a plurality of first bottom electrode patterns and a plurality of first top electrode patterns electrically separated from each other, wherein the plurality of first bottom electrode patterns and the plurality of first top electrode patterns are electrically connected to the plurality of first wires, a plurality of first gaps are formed between the plurality of first bottom electrode patterns, and the plurality of first top electrode patterns overlap the plurality of first gaps, respectively, wherein Each of the plurality of first upper electrode patterns only partially overlaps a corresponding one of the plurality of first lower electrode patterns, an Each of the plurality of first upper electrode patterns has a side edge which is the same as the extending direction of the plurality of first upper electrode patterns, and the vertical projection of the side edge on the first substrate and the vertical projection of each of the plurality of first lower electrode patterns on the first substrate are separated from each other; a second substrate, wherein the first wire layer and the first electrode are located between the first substrate and the second substrate; A display medium layer between the first electrode and the second substrate, and And the second electrode is positioned between the display medium layer and the second substrate.
2. The display device of claim 1, wherein the plurality of first conductive lines are each electrically independent.
3. The display device of claim 1, wherein the plurality of first lower electrode patterns are separated from each other.
4. The display device of claim 1, wherein the plurality of first upper electrode patterns are separated from each other.
5. The display device of claim 1, wherein the plurality of first lower electrode patterns and the plurality of first upper electrode patterns extend in the same direction.
6. The display device of claim 1, wherein an overlap width of the first lower electrode pattern and the first upper electrode pattern is 1.5 μm to 3 μm.
7. The display device according to claim 1, wherein the first upper electrode pattern and the first lower electrode pattern overlapped with each other are different in potential.
8. The display device of claim 1, wherein a pitch between a side of the first upper electrode pattern that does not overlap the first lower electrode pattern and an adjacent first lower electrode pattern that does not overlap is greater than 0 and less than 10 μm.
9. The display device of claim 1, wherein the second electrode includes a plurality of second lower electrode patterns, and an extension direction of the plurality of second lower electrode patterns is perpendicular to an extension direction of the plurality of first lower electrode patterns.
10. The display device of claim 9, wherein the second electrode further comprises a plurality of second upper electrode patterns, and the plurality of second upper electrode patterns and the plurality of second lower electrode patterns extend in the same direction.
11. The display device of claim 10, wherein the plurality of second lower electrode patterns have a plurality of second gaps therebetween, and the plurality of second upper electrode patterns overlap the plurality of second gaps, respectively.
12. The display device of claim 10, further comprising a second conductive line layer between the second substrate and the display medium layer, and comprising a plurality of second conductive lines, wherein the plurality of second lower electrode patterns and the plurality of second upper electrode patterns are electrically connected to the plurality of second conductive lines, respectively.

Description

Display device Technical Field The present invention relates to an optoelectronic device, and more particularly, to a display device. Background The reflective liquid crystal display has the advantages of energy saving and environmental protection, and utilizes reflection or absorption of ambient light to generate a bright state or a dark state so as to achieve the purpose of display, so that a backlight source is not required to be arranged. In general, a liquid crystal layer of a reflective liquid crystal display can be driven by an electric field formed by an upper electrode and a lower electrode to switch between a transmissive state and a reflective state, so as to realize a dark state and a bright state of each sub-pixel, wherein an effective area of each sub-pixel is determined by an overlapping area of the upper electrode and the lower electrode, and an area where the upper electrode and the lower electrode are not overlapped is an ineffective area. However, the line width limit of the manufacturing process is hindered, and the ratio of the ineffective area to the effective area is increased with the increase of pixel density (PPI), resulting in a significant decrease of the reflectivity of the reflective liquid crystal display. Disclosure of Invention The invention provides a display device with improved reflectivity. One embodiment of the invention provides a display device, which comprises a first substrate, a first wire layer, a first electrode, a second substrate, a display medium layer and a second electrode. The first wire layer is positioned on the first substrate and comprises a plurality of first wires. The first electrode is located on the first substrate and comprises a plurality of first lower electrode patterns and a plurality of first upper electrode patterns which are electrically separated from each other, wherein the plurality of first lower electrode patterns and the plurality of first upper electrode patterns are respectively and electrically connected with the plurality of first wires, a plurality of first gaps are arranged between the plurality of first lower electrode patterns, and the plurality of first upper electrode patterns are respectively overlapped with the plurality of first gaps. The first conducting wire layer and the first electrode are positioned between the first substrate and the second substrate. The display medium layer is positioned between the first electrode and the second substrate. The second electrode is positioned between the display medium layer and the second substrate. In an embodiment of the invention, each of the plurality of first conductive lines is electrically independent. In an embodiment of the invention, the plurality of first bottom electrode patterns are separated from each other. In an embodiment of the invention, the plurality of first upper electrode patterns are separated from each other. In an embodiment of the invention, the extending directions of the plurality of first lower electrode patterns and the plurality of first upper electrode patterns are the same. In an embodiment of the invention, an overlapping width of the first lower electrode pattern and the first upper electrode pattern is 1.5 μm to 3 μm. In an embodiment of the present invention, the first upper electrode patterns and the first lower electrode patterns overlapped with each other have different potentials. In an embodiment of the present invention, a pitch between adjacent first lower electrode patterns and first upper electrode patterns is greater than 0 and less than 10 μm. In an embodiment of the invention, the second electrode includes a plurality of second bottom electrode patterns, and an extending direction of the plurality of second bottom electrode patterns is perpendicular to an extending direction of the plurality of first bottom electrode patterns. In an embodiment of the invention, the second electrode further includes a plurality of second upper electrode patterns, and the extending directions of the plurality of second upper electrode patterns and the plurality of second lower electrode patterns are the same. In an embodiment of the invention, a plurality of second gaps are formed between the plurality of second bottom electrode patterns, and the plurality of second top electrode patterns overlap the plurality of second gaps, respectively. In an embodiment of the invention, the display device further includes a second conductive line layer located between the second substrate and the display medium layer, and includes a plurality of second conductive lines, wherein the plurality of second lower electrode patterns and the plurality of second upper electrode patterns are respectively electrically connected to the plurality of second conductive lines. In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. Drawings Fig. 1A is a schematic perspect