Display panel and display device

Patent metadata

Field	Value
Publication number	US-11480834-B2
Application number	US-202017265924-A
Country	US
Kind code	B2
Filing date	Jul 1, 2020
Priority date	Aug 23, 2019
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

This disclosure relates to a display panel and a display device. The display panel includes: a display liquid crystal panel, including a plurality of sub-pixels defined by a first grid structure and arranged in an array; and a dimming liquid crystal panel, located on a light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel, the dimming liquid crystal panel including a plurality of dimming pixels defined by a second grid structure and arranged in an array, and the second grid structure comprising a plurality of first shading lines extending in a waveform along a row direction; wherein the dimming liquid crystal panel further includes a plurality of second shading lines extending along the row direction, and the second shading lines are intersected with the first shading lines.

First claim

What is claimed is:

1. A display panel comprising:
a display liquid crystal panel, comprising a plurality of sub-pixels defined by a first grid structure and arranged in an array; and
a dimming liquid crystal panel, located on a light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel, the dimming liquid crystal panel comprising:
a plurality of dimming pixels defined by a second grid structure and arranged in an array, wherein the second grid structure comprises a plurality of first shading lines extending in a folded line waveform along a row direction; and
a plurality of second shading lines extending in a folded line waveform along the row direction, and intersected with the first shading lines,

wherein:
the waveform of the second shading lines is in opposite phase to the waveform of the first shading line;
the first shading lines comprise a plurality of first fold line units arranged periodically, each of which comprises two first straight line segments arranged symmetrically with a column direction as a symmetry axis; and
the second shading lines comprise a plurality of second fold line units arranged periodically, each of which comprises two second straight line segments arranged symmetrically with the column direction as the symmetry axis;
ends of a first straight line segment and ends of a second straight line segment are overlapped with the first grid structure in a direction perpendicular to the display liquid crystal panel; or
the ends of the first straight line segment and the ends of the second straight line segment and intersections of the first grid structure are overlapped in the direction perpendicular to the display liquid crystal panel.

2. The display panel according to claim 1 , wherein the first shading lines and the second shading lines are on a same patterning layer.

3. The display panel according to claim 1 , wherein a line width of the second shading lines is smaller than that of the first shading lines.

4. The display panel according to claim 3 , wherein:
each row of the sub-pixels comprises a plurality of pixel units, each of the plurality of pixel units comprising a plurality of sub-pixels different in color; and
an area of the dimming pixel is not less than that of each of the plurality of pixel units.

5. The display panel according to claim 4 , wherein the area of the dimming pixel is substantially four times that of each of the plurality of pixel units.

6. The display panel according to claim 1 , wherein the first grid structure comprises:
a plurality of first gate lines extending along the row direction;
a plurality of first data lines extending along a column direction; and
a shading matrix disposed on a side, away from the dimming liquid crystal panel, of the first gate lines and the first data lines,
wherein line widths of both the first gate lines and the first data lines are smaller than that of the shading matrix, and the first gate lines and the first data lines are overlapped with the shading matrix in the direction perpendicular to the display liquid crystal panel.

7. The display panel according to claim 1 , wherein the second grid structure further comprises:
a plurality of second gate lines extending along the row direction; and
a plurality of second data lines extending along a column direction, the second gate lines and the second data lines being disposed on a side, away from the display liquid crystal panel, of the first shading lines, wherein a line width of the second gate lines is smaller than that of the first shading lines, and the second gate lines are overlapped with the first shading lines in the direction perpendicular to the display liquid crystal panel.

8. The display panel according to claim 7 , wherein the second data lines extend in a straight line form or a folded line waveform.

9. The display panel according to claim 1 , wherein:
the dimming liquid crystal panel and the display liquid crystal panel are adhered through a transparent optical adhesive; or
the dimming liquid crystal panel and the display liquid crystal panel share a same manufacturing substrate on a side close to each other.

10. A display device comprising the display panel according to claim 1 .

Assignees

• Wuhan Boe Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Guo Yuanhui
• Gao Yujie
• Shi Xia
• Zhang Wei

Classifications

• G02F1/1347 Primary

  Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/133606

  including a specially adapted diffusing, scattering or light controlling members · 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

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title