Liquid crystal display panels and liquid crystal display devices

Patent metadata

Field	Value
Publication number	US-10866450-B2
Application number	US-201916360627-A
Country	US
Kind code	B2
Filing date	Mar 21, 2019
Priority date	Dec 19, 2018
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

Liquid crystal display panel and liquid crystal display device are provided. A liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer there-between. The first substrate includes a first base substrate, and gate lines and data lines, on the first base substrate and defining a plurality of sub-pixels. The second substrate includes a second base substrate. At least one heating sensor is disposed between the first and second base substrates. A non-display area includes a first non-display area, disposed around a display area, and a second non-display area, disposed around the first non-display area. Each heating sensor includes at least one sub-sensor and two sensor terminals, including a first and second sensor terminal, respectively connected to two ends of the at least one sub-sensor. At least one of the at least one sub-sensor is disposed in the first non-display area.

First claim

What is claimed is:

1. A liquid crystal display panel, comprising:
a first substrate, including:
a first base substrate, and
gate lines and data lines, sequentially disposed on the first base substrate, the gate lines extending along a first direction and arranged along a second direction, the data lines extending along the second direction and arranged along the first direction, the first direction being perpendicular to the second direction, and the gate lines intersecting with and insulated from the data lines, thereby defining a plurality of sub-pixels;

a second substrate including a second base substrate;
a liquid crystal layer, located between the first substrate and the second substrate; and
at least one heating sensor, disposed between the first base substrate and the second base substrate,
wherein:
the liquid crystal display panel includes a display area and a non-display area disposed around the display area, the non-display area includes a first non-display area and a second non-display area, the first non-display area is disposed around the display area, and the second non-display area is disposed around the first non-display area;
the display area and the first non-display area include the plurality of sub-pixels;
each of the at least one heating sensor includes at least one sub-sensor and two sensor terminals, and the two sensor terminals includes a first sensor terminal and a second sensor terminal;
the first sensor terminal and the second sensor terminal are respectively connected to two ends of the at least one sub-sensor; and
at least one of the at least one sub-sensor is disposed in the first non-display area the at least one of the at least one sub-sensor overlapping with a row of sub-pixels of the plurality of sub-pixels.

2. The liquid crystal display panel according to claim 1 , wherein:
the plurality of sub-pixels includes a plurality of display sub-pixels and a plurality of dummy sub-pixels;
the display area includes the plurality of display sub-pixels, and the first non-display area includes the plurality of dummy sub-pixels;
in the second substrate, a black matrix is disposed at a location corresponding to the plurality of dummy sub-pixels, and a vertical projection of the black matrix on the first substrate covers the plurality of dummy sub-pixels; and
the plurality of sub-pixels have a same structure.

3. The liquid crystal display panel according to claim 1 , wherein:
the second non-display area includes a first region and a second region in the first direction, and the second non-display area includes a third region and a fourth region in the second direction;
each of the at least one sub-sensor includes a plurality of convex portions and a plurality of concave portions in its extending direction, and the convex portions and the concave portions are alternately arranged;
the convex portions and the concave portions are both disposed in a third black matrix region and a fourth black matrix region; and
the third black matrix region refers to a non-transparent area between two adjacent rows of the pixels, and the fourth black matrix area refers to a non-transparent area between two adjacent columns of the pixels.

4. The liquid crystal display panel according to claim 3 , wherein the first sensor terminal is disposed in the second region, and the second sub-sensor terminal is disposed in the first region.

5. The liquid crystal display panel according to claim 3 , wherein the first sensor terminal and the second sensor terminal are both disposed in the second region.

6. A liquid crystal display panel, comprising:
a first substrate, including:
a first base substrate, and
gate lines and data lines, sequentially disposed on the first base substrate, the gate lines extending along a first direction and arranged along a second direction, the data lines extending along the second direction and arranged along the first direction, the first direction being perpendicular to the second direction, and the gate lines intersecting with and insulated from the data lines, thereby defining a plurality of sub-pixels;

a second substrate including a second base substrate;
a liquid crystal layer, located between the first substrate and the second substrate; and
at least one heating sensor, disposed between the first base substrate and the second base substrate,
wherein:
the liquid crystal display panel includes a display area and a non-display area disposed around the display area, the non-display area includes a first non-display area and a second non-display area, the first non-display area is disposed around the display area, and the second non-display area is disposed around the first non-display area;
each of the at least one heating sensor includes at least one sub-sensor and two sensor terminals, and the two sensor terminals includes a first sensor terminal and a second sensor terminal;
the first sensor terminal and the second sensor terminal are respectively connected to two ends of the at least one sub-sensor;
at least one of the at least one sub-sensor is disposed in the first non-display area;
the plurality of sub-pixels includes a plurality of display sub-pixels and a plurality of dummy sub-pixels;
the display area includes the plurality of display sub-pixels, and the first non-display area includes the plurality of dummy sub-pixels;
in the second substrate, a black matrix is disposed at a location corresponding to the plurality of dummy sub-pixels, and a vertical projection of the black matrix on the first substrate covers the plurality of dummy sub-pixels;
the plurality of sub-pixels have a same structure;
each of the heating sensors also includes two connection portions, and the two connection portions includes a first connection portion and a second connection portion;
one end of the first connection portion is connected to the sub sensor, and the other end of the first connection portion is connected to the first sensor terminal;
one end of the second connection portion is connected to the sub sensor, and the other end of the second connection portion is connected to the second sensor terminal;
the two connection portions are located in the second non-display area; and
electrical resistance of the first connection portion and electrical resistance of the second connection portion are smaller than or equal to one hundredth of electrical resistance of the heating sensor.

7. The liquid crystal display panel according to claim 6 , wherein:
the display panel also includes at least one heating electrode located between the first base substrate and the second base substrate;
each of the at least one heating electrode includes at least one sub-electrode;
two ends of each of the at least one heating electrode are connected to a first heating power terminal and a second heating power terminal, respectively;
the at least one heating electrode is formed on the first substrate;
the first heating power terminal and the second heating power terminal are formed on the first substrate; and
the at least one heating sensor is formed on the first substrate.

8. The liquid crystal display panel according to claim 7 , wherein:
the second non-display area includes a first region and a second region in the first direction, and the second non-display area includes a third region and a fourth region in the second direction;
the first substrate also includes at least one gate driving circuit and at least one source driving circuit;
the at least one gate driving circuit is located in the first region, and the plurality of gate lines are connected to the gate driving circuit;
the at least one source driving circuit is located in the third region, and the plurality of data lines are connected to

Assignees

• Shanghai Tianma Micro Elect Co
• Chengdu Tianma Micro Electronics Co Ltd

Inventors

• Zhao Jian
• Qin Feng
• Shen Ling
• Su Zhidan

Classifications

• G02F1/133388

  with constructional differences between the display region and the peripheral region · CPC title

• G02F1/134345

  Subdivided pixels, e.g. for grey scale or redundancy · CPC title

• G02F1/133512

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

• G01K7/16

  using resistive elements · CPC title

• G02F1/133382 Primary

  Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell · CPC title