Display device and driving method thereof

Patent metadata

Field	Value
Publication number	US-10769984-B2
Application number	US-201816301292-A
Country	US
Kind code	B2
Filing date	Apr 18, 2018
Priority date	Jun 15, 2017
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A display device including a display panel that includes a plurality of micro-LED pixel units arranged in an array, and a light-controlling component disposed on a light exiting side of the display panel. The light-controlling component includes a plurality of light-controlling regions each including at least two sub-regions individually controllable to switch between a transmissive state and a non-transmissive state. The light-controlling regions are arranged such that an orthographic projection of each of the light-controlling regions on the display panel covers a respective one of the micro-LED pixel units.

First claim

What is claimed is:

1. A display device, comprising:
a display panel comprising a plurality of micro-LED pixel units arranged in an array; and
a light-controlling component on a light exiting side of the plurality of micro-LED pixel units of the display panel, the light-controlling component comprising a plurality of light-controlling regions, ones of the light-controlling regions comprising at least four sub-regions individually controllable to switch between a transmissive state and a non-transmissive state,
wherein the light-controlling component comprises:
a first substrate;
a second substrate opposite to the first substrate;
an electrically controllable optical medium layer between the first substrate and the second substrate;
a first electrode layer on a side of the first substrate facing the second substrate; and
a second electrode layer on a side of the second substrate facing the first substrate,

wherein at least one of the first electrode layer or the second electrode layer comprises a plurality of electrodes within each sub-region of the at least four sub-regions, wherein the electrodes within each sub-region are individually controllable,
wherein respective orthographic projections of the ones of the light-controlling regions on the display panel cover respective ones of the micro-LED pixel units and surrounding regions of the respective ones of the micro-LED pixel units, and the light-controlling regions do not overlap each other,
wherein the electrically controllable optical medium layer comprises ferroelectric liquid crystal material.

2. The display device of claim 1 , wherein within the ones of the light-controlling regions the at least four sub-regions are arranged in a lateral direction, a longitudinal direction, or as an array.

3. The display device of claim 2 , wherein the at least four sub-regions of the ones of the light-controlling regions have a substantially same size.

4. The display device of claim 1 ,
wherein the first electrode layer and the second electrode layer comprise the plurality of electrodes, and
wherein the first electrode layer and the second electrode layer have a same electrode pattern.

5. The display device of claim 1 ,
wherein the first electrode layer comprises the plurality of electrodes, and
wherein the second electrode layer comprises at least one block electrode covering at least one of the light-controlling regions.

6. The display device of claim 1 ,
wherein the second electrode layer comprises the plurality of electrodes, and
wherein the first electrode layer comprises at least one block electrode covering at least one of the light-controlling regions.

7. The display device of claim 1 , wherein ones of the plurality of electrodes comprise a respective plurality of sub-electrodes.

8. The display device of claim 1 ,
wherein the light-controlling component is configured such that the at least four sub-regions of the ones of the light-controlling regions are sequentially switched to the transmissive state within successive time windows to transmit light emitted by the respective ones of the micro-LED pixel units, and
wherein within respective ones of the successive time windows only one of the at least four sub-regions of the ones of the light-controlling regions is in the transmissive state.

9. A method for driving the display device according to claim 1 ,
wherein the method comprises sequentially switching within successive time windows ones of the at least four sub-regions of the light-controlling regions to the transmissive state to transmit light emitted by the respective micro-LED pixel unit,
wherein within ones of the successive time windows only one of the at least four sub-regions of the light-controlling regions is in the transmissive state.

10. The method of claim 9 , wherein the switching comprises:
selectively applying, within the ones of the successive time windows, a drive voltage to the electrodes within the ones of the light-controlling regions.

11. The method of claim 10 , wherein the selectively applying comprises:
applying the drive voltage to respective ones of the electrodes within the ones of the light-controlling regions while not applying the drive voltage to remaining ones of the electrodes, to switch a sub-region of the at least four sub-regions where the electrode applied with the drive voltage is in the transmissive state.

12. The method of claim 10 , wherein the applying comprises:
not applying the drive voltage to respective ones of the electrodes within the ones of the light-controlling regions while applying the drive voltage to remaining ones of the electrodes, to switch a sub-region of the at least four sub-regions where the electrode not applied with the drive voltage is in the transmissive state.

13. The display device of claim 4 , wherein ones of the plurality of electrodes comprise a plurality of sub-electrodes.

14. The display device of claim 5 , wherein ones of the plurality of electrodes comprise a plurality of sub-electrodes.

15. The display device of claim 6 , wherein ones of the plurality of electrodes comprise a plurality of sub-electrodes.

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd

Inventors

• Wang Yanfeng
• Dong Xue
• Wang Dan
• Qiu Yun
• Du Yuanxin
• Xu Xiaoling
• Lv Zhenhua
• Wang Zhidong
• Hu Weipin
• Wei Congcong

Classifications

• H10W90/00

  Package configurations · CPC title

• G09G3/32 Primary

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• H10H29/142

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• G09G3/3426

  the different display panel areas being distributed in two dimensions, e.g. matrix · CPC title