Stretch display screen and display device

• US 10,839,744 B2
• Filed: 11/22/2019
• Issued: 11/17/2020
• Est. Priority Date: 06/13/2018
• Status: Active Grant

• Current Assignee: Yungu (Gu'An) Technology Co., Ltd.
• Original Assignee: Yungu (Gu'An) Technology Co., Ltd.
• Inventors: Li, Jin, Yu, Fengzhi, Gu, Weijie, Liu, Xiaojia, Chen, Chuang
• Primary Examiner(s): Ghebretinsae, Temesghen
• Assistant Examiner(s): Quiles, Ivelisse Martinez
• Application Number:
  US16/691,844
• Publication Number:
  US 20200193899A1
• Time in Patent Office: 361 Days
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes
• CPC Class Codes: G09G 2320/02 Improving the quality of display appearance
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 3/035 for flexible display surfaces
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]

Abstract

A stretch display screen includes: a display region including a sub-display region and a pixel compensation region which are arranged in a predetermined direction in sequence, and a stretching region; a detecting unit disposed in the stretching region for sensing a tensile strength of the stretch display screen; and a pixel compensation control unit configured to receive a signal of the detecting unit and control a corresponding pixel compensation region to emit light according to the tensile strength.

Claims

1. A stretch display screen, comprising:

a display region comprising at least one sub-display region and at least one pixel compensation region which are arranged in a predetermined direction in sequence, and a stretching region;

a detecting unit disposed in the stretching region for acquiring a tensile strength of the stretch display screen in a stretched state; and

a pixel compensation control unit receiving a signal of the detecting unit and controlling a light-emitting area of the at least one pixel compensation region to emit light according to the tensile strength,

wherein each of the at least one sub-display region and each of the at least one pixel compensation region have same layer structures,

the stretching region comprises a stress relief module, and each layer in the stress relief module corresponds to each layer in each of the at least one sub-display region and each of the at least one pixel compensation region one by one.

2. The stretch display screen of claim 1, wherein in the stretched state, the tensile strength of the stretch display screen matches with the light-emitting area of the at least one pixel compensation region, and the greater the tensile strength is, the larger the light-emitting area of the at least one pixel compensation region is.

3. The stretch display screen of claim 2, wherein the detecting unit is au elastic sensor.

4. The stretch display screen of claim 1, wherein the at least one sub-display region and the at least one pixel compensation region are independently controlled.

5. The stretch display screen of claim 1, wherein the at least one pixel compensation region includes a plurality of pixel compensation regions disposed radially around each of the at least one sub-display region, each of the plurality of pixel compensation regions comprises a plurality of compensation pixel units, and the greater the tensile strength of the stretch display screen is, the more of the compensation pixel units that are radially outwardly distributed from the sub-display region emit light.

6. The stretch display screen of claim 1, wherein a ratio of a sum of a light-emitting area of the at least one pixel compensation region to a sum of a light-emitting area of the at least one sub display region is greater than 0, and less than or equal to 0.5.

7. The stretch display screen of claim 1, wherein each of the at least one sub-display region and each of the at least one pixel compensation region respectively comprise at least one pixel unit, each of the at least one pixel unit comprises three sub-pixels of different colors, and an area of an opening of a sub-pixel in each of the at least one sub-display region is same to an area of an opening of a sub-pixel of a same color in each of the at least one pixel compensation region.

8. The stretch display screen of claim 7, wherein the three sub-pixels in each of the at least one pixel unit in the at least one sub-display region are arranged in an isosceles triangle, and a vertical bisector of the isosceles triangle is parallel to the predetermined direction.

9. The stretch display screen of claim 1, wherein the stretching region extends through a substrate, a Thin Film Transistor layer and an Organic Light-Emitting Diode layer of the stretch display screen in a direction orthogonal to the stretch display screen.

10. The stretch display screen of claim 1, wherein each layer of the stretching region is made of a shape memory polymer.

11. The stretch display screen of claim 10, wherein the shape memory polymer is a styrene or an epoxy polymer.

12. The stretch display screen of claim 1, wherein each of the at least one sub-display region comprises at least one predetermined pixel unit, each of the at least one pixel compensation region comprises at least one compensation pixel unit located on one side of each of the at least one predetermined pixel unit deviating from a stretching direction of the stretch display screen, and a distance d between each of the at least one compensation pixel unit and a corresponding predetermined pixel unit is equal to

13. The stretch display screen of claim 12, wherein each of the at least one pixel compensation region comprises a plurality of compensation pixel units, the plurality of compensation pixel units are linearly arranged along the predetermined direction, the at least one sub-display region and the at least one pixel compensation region are independently controlled, and the greater the tensile strength of the stretch display screen is, one of the plurality of compensation pixel units which is further away from the corresponding predetermined pixel unit is selected to emit light instead of the corresponding predetermined pixel unit.

14. A display device, comprising the stretch display screen of claim 1.