Display panel and display device with increased screen-to-body ratio without affecting photosensitive element function

Patent metadata

Field	Value
Publication number	US-12007657-B2
Application number	US-202017107088-A
Country	US
Kind code	B2
Filing date	Nov 30, 2020
Priority date	Sep 30, 2020
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

A display panel and a display device are provided. The display panel includes a first display region and a second display region that are arranged adjacent to each other. The second display region is multiplexed as a photosensitive element disposure region. The first display region includes first sub-pixels, and the second display region includes second sub-pixels and third sub-pixels. The display panel also includes a first substrate and a second substrate that are oppositely disposed. The first substrate is provided with a plurality of signal lines, the plurality of signal lines at least include scan lines and data lines, and the scan lines and the data lines are isolated and crossed to define regions where the first sub-pixel, the second sub-pixel, and the third sub-pixel are located. A signal line of the plurality of signal lines in the second display region is made of a transparent conductive material.

First claim

What is claimed is:

1. A display panel, comprising:
a first display region and a second display region that are arranged adjacent to each other, wherein:
the second display region is multiplexed as a photosensitive element disposure region,
the first display region includes a plurality of first pixels arranged in an array, and a first pixel of the plurality of first pixels includes a plurality of first sub-pixels with different colors,
the second display region includes a plurality of second pixels arranged in an array, and a second pixel of the plurality of second pixels includes a first region and a second region, wherein the first region has an area less than the second region, and
the first region includes a number of second sub-pixels with different colors, and the second region includes a same number of third sub-pixels with one or more colors, wherein a first sub-pixel, having a first color, of the plurality of first sub-pixels, has an area less than a second sub-pixel, having the same first color, of the plurality of second sub-pixels, and a first sub-pixel, having a second color, of the plurality of first sub-pixels, has an area less than a second sub-pixel, having the same second color, of the plurality of second sub-pixels, and the second sub-pixel having the first color or the second color has an area less than a third sub-pixel of the plurality of third sub-pixels, wherein the second color is different from the first color; and

a first substrate and a second substrate that are oppositely disposed, wherein the first substrate is provided with a plurality of signal lines, the plurality of signal lines at least include scan lines and data lines, and the scan lines and the data lines are isolated and crossed to define regions where the first sub-pixel, the second sub-pixel, and the third sub-pixel are located, wherein:
a signal line of the plurality of signal lines in the second display region is made of a transparent conductive material.

2. The display panel according to claim 1 , wherein:
one of the first substrate and the second substrate is further provided with a plurality of color resists and a black matrix layer, wherein:
the black matrix layer in the first display region includes a plurality of openings, and a color resist of the plurality of color resists in the first display region is located in an opening of the plurality of openings, and
the black matrix layer in the second display region includes a hollow-out part, such that at least one of the plurality of color resists in the second display region is not surrounded by the black matrix layer, wherein an orthographic projection of the hollow-out part on the second substrate overlaps the second display region.

3. The display panel according to claim 1 , wherein:
in a same second pixel, orthographic projections of the plurality of second sub-pixels with different colors on the first substrate have a same area, and an orthographic projection of at least one second sub-pixel of the plurality of second sub-pixels on the first substrate has a shape different from an orthographic projection of any other second sub-pixel on the first substrate.

4. The display panel according to claim 1 , wherein:
in a same second pixel, orthographic projections of the plurality of second sub-pixels with different colors on the first substrate have a same shape, and an orthographic projection of at least one second sub-pixel of the plurality of second sub-pixels on the first substrate has an area different from an orthographic projection of any other second sub-pixel on the first substrate.

5. The display panel according to claim 1 , wherein:
in a same second pixel, an orthographic projection of at least one second sub-pixel of the plurality of second sub-pixels on the first substrate has a shape different from an orthographic projection of any other second sub-pixel on the first substrate, and an orthographic projection of at least one second sub-pixel of the plurality of second sub-pixels on the first substrate has an area different from an orthographic projection of any other second sub-pixel on the first substrate.

6. The display panel according to claim 5 , wherein:
a same second pixel includes three second sub-pixels with different colors, and
an area ratio of orthographic projections of the three second sub-pixels with different colors on the first substrate is approximately 2:1:3.

7. The display panel according to claim 1 , wherein:
in a same second pixel, a shape of an orthographic projection of at least one second sub-pixel of the plurality of second sub-pixels on the first substrate has an irregular pattern.

8. The display panel according to claim 1 , wherein:
a signal line of the plurality of signal lines in the first display region is made of a same material as the signal line of the plurality of signal lines in the second display region.

9. The display panel according to claim 1 , wherein:
the second sub-pixel includes a thin film transistor and a pixel electrode that are electrically connected to each other, wherein:
the thin film transistor includes a gate electrode, a source electrode, a drain electrode, and an active part,
the gate electrode is electrically connected to a scan line,
one end of the source electrode is electrically connected to a data line, and another end of the source electrode is electrically connected to the active part,
one end of the drain electrode is electrically connected to the pixel electrode, and another end of the drain electrode is electrically connected to the active part, and
the gate electrode is disposed in a same layer as the scan line, and the source electrode and the drain electrode are disposed in a same layer as the data line.

10. The display panel according to claim 9 , wherein:
the source electrode is electrically connected to the active part through a first via, and the drain electrode is electrically connected to the active part through a second via; and
the source electrode at a position of the first via and the drain electrode at a position of the second via are made of a non-transparent conductive material.

11. The display panel according to claim 10 , wherein:
the second substrate in the second display region is further provided with a first shielding element, and the first shielding element includes a plurality of first sub-elements and a plurality of second sub-elements, wherein an orthographic projection of a first sub-element on the first substrate covers an orthographic projection of the first via on the first substrate, and an orthographic projection of a second sub-element on the first substrate covers an orthographic projection of the second via on the first substrate.

12. The display panel according to claim 11 , wherein:
the orthographic projection of the first sub-element on the first substrate has an area greater than the orthographic projection of the first via on the first substrate, and the orthographic projection of the second sub-element on the first substrate has an area greater than the orthographic projection of the second via on the first substrate.

13. The display panel according to claim 11 , wherein:
in a same second sub-pixel, the orthographic projection of the first sub-element on the first substrate is a first projection, and the orthographic projection of the first via on the first substrate is a second projection, wherein a distance between a boundary of the first projection and a boundary of the second projection is less than or equal to 1 μm; and
in a same second sub-pixel, the orthographic projection of the second sub-element on the first substrate is a third projection, and

Assignees

• Xiamen Tianma Micro Electronics Co Ltd

Inventors

• Wang Hailiang
• Li Yaying
• Yang Yan
• Zhou Ting
• Li Junyi

Classifications

• G02F2201/52

  RGB geometrical arrangements · CPC title

• G02F1/136218

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• G02F1/136227

  Through-hole connection of the pixel electrode to the active element through an insulation layer · CPC title

• G02F1/136209

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G02F1/133514

  Colour filters · CPC title