Array substrate and transflective liquid crystal display panel

Patent metadata

Field	Value
Publication number	US-9360702-B2
Application number	US-201314355273-A
Country	US
Kind code	B2
Filing date	Dec 3, 2013
Priority date	Jun 13, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

An array substrate and a transflective liquid crystal display panel. The array substrate includes: a plurality of sub-pixel areas defined by gate lines and data lines distributed across each other, each of the sub-pixel areas comprising a transmission area and a reflection area, wherein, the array substrate further comprises an adjustment module; the adjustment module is configured to transmit an adjustment signal to the reflection area and adjust the reflection area from opaque state to transparent state upon an external light intensity being smaller than a preset light intensity.

First claim

The invention claimed is:

1. An array substrate comprising a plurality of sub-pixel areas defined by gate lines and data lines distributed across each other, each of the sub-pixel areas comprising a transmission area and a reflection area, wherein,
the array substrate further comprises an adjustment module;
the adjustment module is configured to transmit an adjustment signal to the reflection area and adjust the reflection area from opaque state to transparent state upon an external light intensity being smaller than a preset light intensity,
wherein the reflection area comprises a polymer dispersed liquid crystal layer, and
wherein the reflection area further comprises a transparent enhanced reflection layer on the polymer dispersed liquid crystal layer and the enhanced reflection layer has a relative refraction index greater than that of the polymer dispersed liquid crystal layer.

2. The array substrate of claim 1 , wherein the enhanced reflection layer has a plurality of protrusions on its surface.

3. The array substrate of claim 2 , wherein the protrusion has a section of trapezoid.

4. The array substrate of claim 1 , further comprising:
a first signal line, a second signal line and a switching transistor, the first signal line connecting the adjustment module and a gate electrode of the switching transistor, the second signal line connecting the adjustment module and a source electrode of the switching transistor, and a drain electrode of the switching transistor being connected with the polymer dispersed liquid crystal layer.

5. The array substrate of claim 4 , wherein
the gate electrode, the gate insulating layer and the drain electrode of the switching transistor are transparent.

6. The array substrate of claim 5 , wherein
a transparent insulating layer is covered on a surface of the switching transistor and the polymer dispersed liquid crystal layer.

7. The array substrate of claim 1 , wherein
the adjustment module comprises a photoelectric sensing device configured to sense external light intensity to determine whether to transmit the adjustment signal.

8. The array substrate of claim 4 , wherein
the adjustment module is configured to be able to transmit a first adjustment signal through the first signal line to control turning on/off of the switching transistor and transmit a second adjustment signal through the second signal line to control transparent/non-transparent state of the polymer dispersed liquid crystal layer.

9. The array substrate of claim 1 , wherein the reflection area and the transmission area both comprise transparent pixel electrodes.

10. The array substrate of claim 9 , wherein the reflection area and the transmission area further comprise transparent common electrodes.

11. The array substrate of claim 9 , wherein each sub-pixel area further comprises a sub-pixel thin film transistor connected with the pixel electrode.

12. A transflective liquid crystal display panel comprising the array substrate according to claim 1 .

13. The array substrate of claim 2 , further comprising:
a first signal line, a second signal line and a switching transistor, the first signal line connecting the adjustment module and a gate electrode of the switching transistor, the second signal line connecting the adjustment module and a source electrode of the switching transistor, and a drain electrode of the switching transistor being connected with the polymer dispersed liquid crystal layer.

14. The array substrate of claim 3 , further comprising:
a first signal line, a second signal line and a switching transistor, the first signal line connecting the adjustment module and a gate electrode of the switching transistor, the second signal line connecting the adjustment module and a source electrode of the switching transistor, and a drain electrode of the switching transistor being connected with the polymer dispersed liquid crystal layer.

15. The array substrate of claim 2 , wherein
the adjustment module comprises a photoelectric sensing device configured to sense external light intensity to determine whether to transmit the adjustment signal.

16. The array substrate of claim 3 , wherein
the adjustment module comprises a photoelectric sensing device configured to sense external light intensity to determine whether to transmit the adjustment signal.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics

Inventors

• Li Jing
• Xie Zhenyu
• Chen Xu
• Xu Da

Classifications

• G02F1/133555 Primary

  Transflectors · CPC title

• G02F1/1334

  based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title