ELECTROLUMINESCENT DISPLAY PANEL AND DISPLAY DEVICE

• US 20200135973A1
• Filed: 12/28/2019
• Published: 04/30/2020
• Est. Priority Date: 09/29/2019
• Status: Active Grant

• Current Assignee: Wuhan Tianma Micro-Electronics Company Limited (Wuhan Donghu New Technology Development Zone Production Promotion Centre)
• Original Assignee: Wuhan Tianma Micro-Electronics Company Limited (Wuhan Donghu New Technology Development Zone Production Promotion Centre)
• Inventors: MA, Yangzhao, TANG, Yuejun, ZHOU, Ruiyuan
• Granted Patent: US 11,049,998 B2
• Time in Patent Office: Days
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 31/14 the light source or sources being controlled by the semiconductor device sensitive to radiation, e.g. image converters, image amplifiers or image storage devices
• CPC Class Codes: H01L 33/24 of the light emitting region, e.g. non-planar junction
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls

Abstract

An electroluminescent display panel and a display device are provided. In the embodiments of the disclosure, a photosensitive device is arranged in the photosensitive device arranging region. The extending line of at least one line is arranged in the photosensitive device arranging region so that the orthographic projection of the extending line on the light-emitting surface of the electroluminescent display panel overlaps with the first pixels in the first and second specific pixel groups in the photosensitive device arranging area; the first and second specific pixel groups include respective first pixels located in first straight lines of the second pixels correspondingly connected to two adjacent signal lines, the first and second specific pixel groups are adjacent in the second direction, and the first straight lines extend in the first direction.

Claims

1. An electroluminescent display panel, comprising:

a display region, wherein the display region comprises a photosensitive device arranging region and a first normal display region which are arranged in a first direction;

the display region comprises a plurality of pixels, the plurality of pixels comprise first pixels located in the photosensitive device arranging region and second pixels located in the first normal display region, wherein a region between adjacent first pixels is a light-transmission region, and an arranging density of the first pixels is less than an arranging density of the second pixels;

the second pixels are arranged in an array, at least one first pixel is arranged in an extending direction of the first direction, in which the second pixels is located, in the photosensitive device arranging region;

the electroluminescent display panel further comprises a plurality of signal lines extending in the first direction and arranged in a second direction, wherein each signal line is electrically connected to corresponding second pixels arranged in the first direction, and the first direction is perpendicular to the second direction;

at least one of two adjacent signal lines has an extending line, the extending line is located in the photosensitive device arranging region and overlaps with orthographic projections of the first pixels in a first specific pixel group and a second specific pixel group on a light-emitting surface of the electroluminescent display panel respectively, and the first pixels in the first specific pixel group and the second specific pixel group are electrically connected to one extending line;

wherein the first specific pixel group and the second specific pixel group comprise respective first pixels located in first straight lines of the second pixels correspondingly connected to two adjacent signal lines, the first specific pixel group and the second specific pixel group are adjacent in the second direction, and the first straight lines extend in the first direction.

2. The electroluminescent display panel of claim 1, wherein only one of two adjacent signal lines has an extending line;

the first pixels in the first specific pixel group and the second specific pixel group are electrically connected to the extending line.

3. The electroluminescent display panel of claim 2, further comprising a non-display region surrounding the display region;

the photosensitive device arranging region is arranged at a side of the display region close to the non-display region.

4. The electroluminescent display panel of claim 1, wherein the first pixels in the first specific pixel group and the first pixels in the second specific pixel group are misaligned in the first direction.

5. The electroluminescent display panel of claim 4, wherein the number of the first pixels in the first specific pixel group is the same as the number of the first pixels in the second specific pixel group.

6. The electroluminescent display panel of claim 5, wherein both of two adjacent signal lines have extending lines comprising a first extending line and a second extending line, wherein:

the first extending line is electrically connected to the first pixels in the first specific pixel group, and overlaps with the first pixels in the second specific pixel group;

the second extending line is electrically connected to the first pixels in the second specific pixel group, and overlaps with the first pixels in the first specific pixel group.

7. The electroluminescent display panel of claim 4, wherein the number of the first pixels in the first specific pixel group is greater than the number of the first pixels in the second specific pixel group.

8. The electroluminescent display panel of claim 7, wherein both of two adjacent signal lines have extending lines comprising a first extending line and a second extending line, wherein:

the first extending line is electrically connected to a part of the first pixels in the first specific pixel group, the second extending line is electrically connected to the first pixels in the second specific pixel group and the other first pixels in the first specific pixel group, the number of the first pixels electrically connected to the first extending line is N1, and the number of the first pixels electrically connected to the second extending line is N2, wherein 0≤

|N1−

N2|≤

1.

9. The electroluminescent display panel of claim 6, wherein the first extending line and the second extending line are arranged in different layers, and an orthographic projection of the first extending line on the light-emitting surface of the electroluminescent display panel overlaps with an orthographic projection of the second extending line on the light-emitting surface of the electroluminescent display panel.

10. The electroluminescent display panel of claim 8, wherein the first extending line and the second extending line are arranged in different layers, and an orthographic projection of the first extending line on the light-emitting surface of the electroluminescent display panel overlaps with an orthographic projection of the second extending line on the light-emitting surface of the electroluminescent display panel.

11. The electroluminescent display panel of claim 1, wherein orthographic projections of the first pixels on the light-emitting surface of the electroluminescent display panel are first projections, at least a part of the first projections comprise a first segment and a second segment connected, the first segment extends in a third direction, and the second segment extends in a fourth direction;

an orthographic projection of the extending line on the light-emitting surface of the electroluminescent display panel is a second projection, the second projection comprises a second sub-projection overlapping with at least a part of the first projections, the second sub-projection comprises a third segment and a fourth segment connected, the third segment extends in the third direction, and the fourth segment extends in the fourth direction;

wherein the third direction intersects with the fourth direction, and the third direction and the fourth direction both intersect with a row direction and a column direction.

12. The electroluminescent display panel of claim 11, wherein the first pixel comprises a pixel circuit and a light-emitting unit connected electrically, the light-emitting unit comprises an anode;

a shape of an orthographic projection of the pixel circuit and the anode on the light-emitting surface of the electroluminescent display panel is same as a shape of the first projection.

13. The electroluminescent display panel of claim 1, wherein the signal lines are data lines, and the first direction is a column direction;

or,

the signal lines are gate lines, and the first direction is a row direction.

14. A display device comprising an electroluminescent display panel and a photosensitive device;

wherein the electroluminescent display panel, comprises;

a display region, wherein the display region comprises a photosensitive device arranging region and a first normal display region which are arranged in a first direction;

the display region comprises a plurality of pixels, the plurality of pixels comprise first pixels located in the photosensitive device arranging region and second pixels located in the first normal display region, wherein a region between adjacent first pixels is a light-transmission region, and an arranging density of the first pixels is less than an arranging density of the second pixels;

the second pixels are arranged in an array, at least one first pixel is arranged in an extending direction of the first direction, in which the second pixels is located, in the photosensitive device arranging region;

the electroluminescent display panel further comprises a plurality of signal lines extending in the first direction and arranged in a second direction, wherein each signal line is electrically connected to corresponding second pixels arranged in the first direction, and the first direction is perpendicular to the second direction;

at least one of two adjacent signal lines has an extending line, the extending line is located in the photosensitive device arranging region and overlaps with orthographic projections of the first pixels in a first specific pixel group and a second specific pixel group on a light-emitting surface of the electroluminescent display panel respectively, and the first pixels in the first specific pixel group and the second specific pixel group are electrically connected to one extending line;

wherein the first specific pixel group and the second specific pixel group comprise respective first pixels located in first straight lines of the second pixels correspondingly connected to two adjacent signal lines, the first specific pixel group and the second specific pixel group are adjacent in the second direction, and the first straight lines extend in the first direction; and

wherein the photosensitive device is correspondingly arranged in the photosensitive device arranging region.